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Dr. Valeria Palomba
National Council of Research, Institute for Advanced Energy Technologies (CNR ITAE), Messina, Italy

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0 Heat Pumps
0 Hybrid Systems
0 Renewable Energy
0 Thermal Energy Storage
0 Energy System Simulation

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Journal article
Published: 10 May 2021 in Sustainability
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The buildings sector is one of the least sustainable activities in the world, accounting for around 40% of the total global energy demand. With the aim to reduce the environmental impact of this sector, the use of renewable energy sources coupled with energy storage systems in buildings has been investigated in recent years. Innovative solutions for cooling, heating, and domestic hot water in buildings can contribute to the buildings’ decarbonization by achieving a reduction of building electrical consumption needed to keep comfortable conditions. However, the environmental impact of a new system is not only related to its electrical consumption from the grid, but also to the environmental load produced in the manufacturing and disposal stages of system components. This study investigates the environmental impact of an innovative system proposed for residential buildings in Mediterranean climate through a life cycle assessment. The results show that, due to the complexity of the system, the manufacturing and disposal stages have a high environmental impact, which is not compensated by the reduction of the impact during the operational stage. A parametric study was also performed to investigate the effect of the design of the storage system on the overall system impact.

ACS Style

Gabriel Zsembinszki; Noelia Llantoy; Valeria Palomba; Andrea Frazzica; Mattia Dallapiccola; Federico Trentin; Luisa Cabeza. Life Cycle Assessment (LCA) of an Innovative Compact Hybrid Electrical-Thermal Storage System for Residential Buildings in Mediterranean Climate. Sustainability 2021, 13, 5322 .

AMA Style

Gabriel Zsembinszki, Noelia Llantoy, Valeria Palomba, Andrea Frazzica, Mattia Dallapiccola, Federico Trentin, Luisa Cabeza. Life Cycle Assessment (LCA) of an Innovative Compact Hybrid Electrical-Thermal Storage System for Residential Buildings in Mediterranean Climate. Sustainability. 2021; 13 (9):5322.

Chicago/Turabian Style

Gabriel Zsembinszki; Noelia Llantoy; Valeria Palomba; Andrea Frazzica; Mattia Dallapiccola; Federico Trentin; Luisa Cabeza. 2021. "Life Cycle Assessment (LCA) of an Innovative Compact Hybrid Electrical-Thermal Storage System for Residential Buildings in Mediterranean Climate." Sustainability 13, no. 9: 5322.

Journal article
Published: 30 April 2021 in Energies
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The need for innovative heating and cooling systems to decarbonize the building sector is widely recognized. It is especially important to increase the share of renewables at building level by maximizing self-consumption and reducing the primary energy demand. Accordingly, in the present paper, the results on a wide experimental campaign on a hybrid system are discussed. The system included a sorption module working as the topping cycle in a cascade configuration with a DC-driven vapor compression heat pump. A three-fluids heat exchanger with a phase change material (PCM), i.e., RT4 with nominal melting temperature of 4 °C, was installed on the evaporator side of the heat pump, for simultaneous operation as thermal storage and heat pumping purposes. The heat pump was connected to a DC-bus that included PV connection and electricity storage (batteries). Results showed that the energy efficiency of the heat pump in cascade operation was double compared to compression-only configuration and that, when simultaneously charging and discharging the latent storage in cascade configuration, no penalization in terms of efficiency compared to the compression-only configuration was measured. The self-sufficiency of the system was evaluated for three reference weeks in summer conditions of Athens climate and it was found that up to 100% of the electricity needed to drive the system could be self-produced for a modest cooling demand and up to 67% for the warmer conditions with high cooling demand.

ACS Style

Valeria Palomba; Antonino Bonanno; Giovanni Brunaccini; Davide Aloisio; Francesco Sergi; Giuseppe Dino; Efstratios Varvaggiannis; Sotirios Karellas; Birgo Nitsch; Andreas Strehlow; André Groβe; Ralph Herrmann; Nikolaos Barmparitsas; Nelson Koch; David Vérez; Luisa Cabeza; Gabriel Zsembinszki; Andrea Frazzica. Hybrid Cascade Heat Pump and Thermal-Electric Energy Storage System for Residential Buildings: Experimental Testing and Performance Analysis. Energies 2021, 14, 2580 .

AMA Style

Valeria Palomba, Antonino Bonanno, Giovanni Brunaccini, Davide Aloisio, Francesco Sergi, Giuseppe Dino, Efstratios Varvaggiannis, Sotirios Karellas, Birgo Nitsch, Andreas Strehlow, André Groβe, Ralph Herrmann, Nikolaos Barmparitsas, Nelson Koch, David Vérez, Luisa Cabeza, Gabriel Zsembinszki, Andrea Frazzica. Hybrid Cascade Heat Pump and Thermal-Electric Energy Storage System for Residential Buildings: Experimental Testing and Performance Analysis. Energies. 2021; 14 (9):2580.

Chicago/Turabian Style

Valeria Palomba; Antonino Bonanno; Giovanni Brunaccini; Davide Aloisio; Francesco Sergi; Giuseppe Dino; Efstratios Varvaggiannis; Sotirios Karellas; Birgo Nitsch; Andreas Strehlow; André Groβe; Ralph Herrmann; Nikolaos Barmparitsas; Nelson Koch; David Vérez; Luisa Cabeza; Gabriel Zsembinszki; Andrea Frazzica. 2021. "Hybrid Cascade Heat Pump and Thermal-Electric Energy Storage System for Residential Buildings: Experimental Testing and Performance Analysis." Energies 14, no. 9: 2580.

Journal article
Published: 23 April 2021 in Applied Sciences
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With the aim of contributing to achieving the decarbonization of the energy sector, the environmental impact of an innovative system to produce heating and domestic hot water for heating demand-dominated climates is assessed is evaluated. The evaluation is conducted using the life cycle assessment (LCA) methodology and the ReCiPe and IPCC GWP indicators for the manufacturing and operation stages, and comparing the system to a reference one. Results show that the innovative system has a lower overall impact than the reference one. Moreover, a parametric study to evaluate the impact of the refrigerant is carried out, showing that the impact of the overall systems is not affected if the amount of refrigerant or the impact of refrigerant is increased.

ACS Style

Noelia Llantoy; Gabriel Zsembinszki; Valeria Palomba; Andrea Frazzica; Mattia Dallapiccola; Federico Trentin; Luisa Cabeza. Life Cycle Assessment of an Innovative Hybrid Energy Storage System for Residential Buildings in Continental Climates. Applied Sciences 2021, 11, 3820 .

AMA Style

Noelia Llantoy, Gabriel Zsembinszki, Valeria Palomba, Andrea Frazzica, Mattia Dallapiccola, Federico Trentin, Luisa Cabeza. Life Cycle Assessment of an Innovative Hybrid Energy Storage System for Residential Buildings in Continental Climates. Applied Sciences. 2021; 11 (9):3820.

Chicago/Turabian Style

Noelia Llantoy; Gabriel Zsembinszki; Valeria Palomba; Andrea Frazzica; Mattia Dallapiccola; Federico Trentin; Luisa Cabeza. 2021. "Life Cycle Assessment of an Innovative Hybrid Energy Storage System for Residential Buildings in Continental Climates." Applied Sciences 11, no. 9: 3820.

Journal article
Published: 09 April 2021 in Applied Sciences
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The present work aims at the thermodynamic analysis of different working pairs in adsorption heat transformers (AdHT) for low-temperature waste heat upgrade in industrial processes. Two different AdHT configurations have been simulated, namely with and without heat recovery between the adsorbent beds. Ten working pairs, employing different adsorbent materials and four different refrigerants, have been compared at varying working boundary conditions. The effects of heat recovery and the presence of a temperature gradient for heat transfer between sinks/sources and the AdHT components have been analyzed. The achieved results demonstrate the possibility of increasing the overall performance when internal heat recovery is implemented. They also highlight the relevant role played by the existing temperature gradient between heat transfer fluids and components, that strongly affect the real operating cycle of the AdHT and thus its expected performance. Both extremely low, i.e., 40–50 °C, and low (i.e., 80 °C) waste heat source temperatures were investigated at variable ambient temperatures, evaluating the achievable COP and specific energy. The main results demonstrate that optimal performance can be achieved when 40–50 K of temperature difference between waste heat source and ambient temperature are guaranteed. Furthermore, composite sorbents demonstrated to be the most promising adsorbent materials for this application, given their high sorption capacity compared to pure adsorbents, which is reflected in much higher achievable specific energy.

ACS Style

Andrea Frazzica; Valeria Palomba; Belal Dawoud. Thermodynamic Performance of Adsorption Working Pairs for Low-Temperature Waste Heat Upgrading in Industrial Applications. Applied Sciences 2021, 11, 3389 .

AMA Style

Andrea Frazzica, Valeria Palomba, Belal Dawoud. Thermodynamic Performance of Adsorption Working Pairs for Low-Temperature Waste Heat Upgrading in Industrial Applications. Applied Sciences. 2021; 11 (8):3389.

Chicago/Turabian Style

Andrea Frazzica; Valeria Palomba; Belal Dawoud. 2021. "Thermodynamic Performance of Adsorption Working Pairs for Low-Temperature Waste Heat Upgrading in Industrial Applications." Applied Sciences 11, no. 8: 3389.

Reference work
Published: 23 February 2021 in Handbook of Climate Change Mitigation and Adaptation
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Heat pumps are one of the most promising technologies for residential and industrial applications in the perspective of a decarbonized society. Their role in climate change mitigation can be fully capitalized through their direct coupling with renewable energy sources, among which solar heat is the most abundant one. The systems that feature the integration of heat pumps and solar systems are known as solar-assisted heat pumps. In the present chapter, the fundamentals of mechanical compression and sorption heat pumps are given and their utilization in combination with solar thermal collectors is discussed, highlighting the relevant features of each possible layout according to the expected useful effect and field of application, showing that heat pumping technology has a central role in the reduction of emissions due to heating and cooling production.

ACS Style

Valeria Palomba; Giuseppe E. Dino; Andrea Frazzica. Solar-Assisted Heat Pumps and Chillers. Handbook of Climate Change Mitigation and Adaptation 2021, 1 -54.

AMA Style

Valeria Palomba, Giuseppe E. Dino, Andrea Frazzica. Solar-Assisted Heat Pumps and Chillers. Handbook of Climate Change Mitigation and Adaptation. 2021; ():1-54.

Chicago/Turabian Style

Valeria Palomba; Giuseppe E. Dino; Andrea Frazzica. 2021. "Solar-Assisted Heat Pumps and Chillers." Handbook of Climate Change Mitigation and Adaptation , no. : 1-54.

Journal article
Published: 09 February 2021 in Energies
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Increasing the energy efficiency of residential and non-residential buildings is a crucial point towards the development of the sustainable cities of the future. To reach such a goal, the commonly employed intervention measures (for instance, on facades and glass) are not sufficient and efforts in reaching a fully renewable energy generation are mandatory. In this context, this paper discusses the applicability of a system with solar and biomass as the main energy sources in different climates for heating, cooling, domestic hot water and electricity generation in office buildings. The energy system includes solar thermal collectors with thermoelectric generators, a biomass boiler, a reversible heat pump/organic Rankine cycle and an adsorption chiller. The results showed that the system can operate with a share of renewables higher than 70% for all energy needs, with up to 80% of the overall energy demand supplied only by solar and biomass sources even in the northern locations.

ACS Style

Valeria Palomba; Emiliano Borri; Antonios Charalampidis; Andrea Frazzica; Sotirios Karellas; Luisa Cabeza. An Innovative Solar-Biomass Energy System to Increase the Share of Renewables in Office Buildings. Energies 2021, 14, 914 .

AMA Style

Valeria Palomba, Emiliano Borri, Antonios Charalampidis, Andrea Frazzica, Sotirios Karellas, Luisa Cabeza. An Innovative Solar-Biomass Energy System to Increase the Share of Renewables in Office Buildings. Energies. 2021; 14 (4):914.

Chicago/Turabian Style

Valeria Palomba; Emiliano Borri; Antonios Charalampidis; Andrea Frazzica; Sotirios Karellas; Luisa Cabeza. 2021. "An Innovative Solar-Biomass Energy System to Increase the Share of Renewables in Office Buildings." Energies 14, no. 4: 914.

Journal article
Published: 09 October 2020 in Nature Communications
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Adsorption-driven heat transfer technology using water as working fluid is a promising eco-friendly strategy to address the exponential increase of global energy demands for cooling and heating purposes. Here we present the water sorption properties of a porous aluminum carboxylate metal-organic framework, [Al(OH)(C6H3NO4)]·nH2O, KMF-1, discovered by a joint computational predictive and experimental approaches, which exhibits step-like sorption isotherms, record volumetric working capacity (0.36 mL mL−1) and specific energy capacity (263 kWh m−3) under cooling working conditions, very high coefficient of performances of 0.75 (cooling) and 1.74 (heating) together with low driving temperature below 70 °C which allows the exploitation of solar heat, high cycling stability and remarkable heat storage capacity (348 kWh m−3). This level of performances makes this porous material as a unique and ideal multi-purpose water adsorbent to tackle the challenges of thermal energy storage and its further efficient exploitation for both cooling and heating applications.

ACS Style

Kyung Ho Cho; D. Damasceno Borges; U-Hwang Lee; Ji Sun Lee; Ji Woong Yoon; Sung June Cho; Jaedeuk Park; Walter Lombardo; Dohyun Moon; Alessio Sapienza; Guillaume Maurin; Jong-San Chang. Rational design of a robust aluminum metal-organic framework for multi-purpose water-sorption-driven heat allocations. Nature Communications 2020, 11, 1 -8.

AMA Style

Kyung Ho Cho, D. Damasceno Borges, U-Hwang Lee, Ji Sun Lee, Ji Woong Yoon, Sung June Cho, Jaedeuk Park, Walter Lombardo, Dohyun Moon, Alessio Sapienza, Guillaume Maurin, Jong-San Chang. Rational design of a robust aluminum metal-organic framework for multi-purpose water-sorption-driven heat allocations. Nature Communications. 2020; 11 (1):1-8.

Chicago/Turabian Style

Kyung Ho Cho; D. Damasceno Borges; U-Hwang Lee; Ji Sun Lee; Ji Woong Yoon; Sung June Cho; Jaedeuk Park; Walter Lombardo; Dohyun Moon; Alessio Sapienza; Guillaume Maurin; Jong-San Chang. 2020. "Rational design of a robust aluminum metal-organic framework for multi-purpose water-sorption-driven heat allocations." Nature Communications 11, no. 1: 1-8.

Journal article
Published: 27 July 2020 in Energy
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One of the main limitations for the wide diffusion of sorption systems, either as stand-alone and in hybrid configurations, is the low heat transfer inside the adsorber, as well as the low volumetric cooling power. In this context, the present paper reports the experimental activity on four different advanced configurations for the adsorber, based on microchannel heat exchangers where the gap between the channels is filled with porous structures where zeotypes of SAPO-34 family were synthetized. The porous structures evaluated are high-density fins, two different aluminium foams and compressed chips from the waste of aluminium machining. The sorption dynamic and cooling power density of each structure were measured through a Gravimetric Large Temperature Jump testing apparatus. The results obtained showed that the best-performing configuration is the one with high-density fins, that, for a 90/30/20 °C cycle showed a Specific Cooling Power up to 1.1 kW/kg. The other structures exhibit a much slower adsorption process, corresponding to power densities of about 0.3 kW/kg. The results were used for sizing a full-scale adsorber, whose expected Volumetric Cooling Power is 500 kW/m3.

ACS Style

V. Palomba; W. Lombardo; A. Groβe; R. Herrmann; B. Nitsch; A. Strehlow; R. Bastian; A. Sapienza; A. Frazzica. Evaluation of in-situ coated porous structures for hybrid heat pumps. Energy 2020, 209, 118313 .

AMA Style

V. Palomba, W. Lombardo, A. Groβe, R. Herrmann, B. Nitsch, A. Strehlow, R. Bastian, A. Sapienza, A. Frazzica. Evaluation of in-situ coated porous structures for hybrid heat pumps. Energy. 2020; 209 ():118313.

Chicago/Turabian Style

V. Palomba; W. Lombardo; A. Groβe; R. Herrmann; B. Nitsch; A. Strehlow; R. Bastian; A. Sapienza; A. Frazzica. 2020. "Evaluation of in-situ coated porous structures for hybrid heat pumps." Energy 209, no. : 118313.

Journal article
Published: 21 April 2020 in Applied Thermal Engineering
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Evaporation of water at sub-atmospheric pressures, close to its triple point, is gaining attention for the wide range of engineering applications. However, the mechanism and boiling regimes are still not completely clear and a correlation between operating conditions, geometric features of the evaporator and achievable heat transfer is still missing. In this context, the present paper aims at the study of a fin-and-tube heat exchanger working as an evaporator in the pressure range of 1–7 kPa. The experimental study analyses the effect of the main operating parameters (temperature of the heat transfer fluid, superheat, inclination of the heat exchanger) and attempts to find correlations suitable for the engineering design of evaporator under the investigated conditions. The results allowed the identification of the main factors influencing the heat transfer, i.e. the temperature of the heat transfer fluid and, secondarily, the logarithmic mean temperature difference, as well as the derivation of expressions that correlate the evaporation power and the heat transfer coefficients with operating conditions.

ACS Style

Valeria Palomba; Andrea Frazzica. Experimental study of a fin-and-tube heat exchanger working as evaporator in subatmospheric conditions. Applied Thermal Engineering 2020, 175, 115336 .

AMA Style

Valeria Palomba, Andrea Frazzica. Experimental study of a fin-and-tube heat exchanger working as evaporator in subatmospheric conditions. Applied Thermal Engineering. 2020; 175 ():115336.

Chicago/Turabian Style

Valeria Palomba; Andrea Frazzica. 2020. "Experimental study of a fin-and-tube heat exchanger working as evaporator in subatmospheric conditions." Applied Thermal Engineering 175, no. : 115336.

Journal article
Published: 01 April 2020 in Renewable Energy
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The decarbonization of the building sector cannot preclude from the vast diffusion of renewable-sourced polygeneration systems for covering both heating and cooling demand. In this context, this study shows the potentialities of a system based on solar thermal collectors, a biomass boiler and an innovative reversible hybrid heat pump/ORC concept for addressing heating, cooling and domestic hot water demand of residential buildings. The potential is investigated in three cities (Madrid, Berlin and Helsinki), representative of the different European climates. The share of renewables in different seasons and building typologies is presented and the possibility of obtaining a 100% renewable system when the solution proposed is installed in new and renovated buildings is discussed. The results show that in standard multi-family houses, up to 70% of heating demand and 100% of cooling demand can be covered by the system in warmer climates and up to 60% share of renewables can be reached in Northern climates. Moreover, the flexible configuration of the system shows the potential for the application in the future energy system of the EU.

ACS Style

Valeria Palomba; Emiliano Borri; Antonios Charalampidis; Andrea Frazzica; Luisa F. Cabeza; Sotirios Karellas. Implementation of a solar-biomass system for multi-family houses: Towards 100% renewable energy utilization. Renewable Energy 2020, 166, 190 -209.

AMA Style

Valeria Palomba, Emiliano Borri, Antonios Charalampidis, Andrea Frazzica, Luisa F. Cabeza, Sotirios Karellas. Implementation of a solar-biomass system for multi-family houses: Towards 100% renewable energy utilization. Renewable Energy. 2020; 166 ():190-209.

Chicago/Turabian Style

Valeria Palomba; Emiliano Borri; Antonios Charalampidis; Andrea Frazzica; Luisa F. Cabeza; Sotirios Karellas. 2020. "Implementation of a solar-biomass system for multi-family houses: Towards 100% renewable energy utilization." Renewable Energy 166, no. : 190-209.

Journal article
Published: 18 March 2020 in Applied Sciences
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In recent years, hot and cold storage systems demonstrated themselves to be key components, especially in systems for waste heat exploitation. Moreover, mobile A/C and refrigeration set new efficiency challenges in the field of goods and passengers transport. In such a context, adsorption cold storage devices enable new possibilities and show promising features: high energy density and the possibility of being operated both for heat and cold release to the user. However, only a few studies on small and compact systems for mobile applications have been carried out so far, especially for cold storage exploiting low-temperature sources (

ACS Style

Salvatore Vasta; Valeria Palomba; Davide La Rosa; Antonino Bonanno. Adsorption Cold Storage for Mobile Applications. Applied Sciences 2020, 10, 2044 .

AMA Style

Salvatore Vasta, Valeria Palomba, Davide La Rosa, Antonino Bonanno. Adsorption Cold Storage for Mobile Applications. Applied Sciences. 2020; 10 (6):2044.

Chicago/Turabian Style

Salvatore Vasta; Valeria Palomba; Davide La Rosa; Antonino Bonanno. 2020. "Adsorption Cold Storage for Mobile Applications." Applied Sciences 10, no. 6: 2044.

Journal article
Published: 02 March 2020 in Renewable Energy
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The efficient utilization of renewable energy sources should rely on the exploitation of a mix of thermal and electric energy rather than relying on a single energy source. One way to apply this shared generation concept to space heating/cooling and refrigeration in both residential and industrial sector is through hybrid sorption-compression chillers. However, the experience on these systems is still limited and therefore their design and optimization require some efforts. Starting from the experimental experience on the testing of different hybrid cascade chillers, and integrating the measurement with a dynamic model, some considerations on the sizing, design and optimization of hybrid thermal-electric chillers are reported. In particular, design conditions of pre-commercial or commercial systems are evaluated and optimization at different levels is proposed, i.e. on the core components (through the proper design of relative capacities of the units in the cascade and through proper selection of the refrigerant), on the auxiliaries, to reduce their electricity consumption, and on the overall management of the hybrid chiller. Results demonstrated that the higher is the operating temperature lift between evaporator and condenser the higher are the achievable energy savings of a cascade chiller.

ACS Style

Valeria Palomba; Giuseppe E. Dino; Andrea Frazzica. Coupling sorption and compression chillers in hybrid cascade layout for efficient exploitation of renewables: Sizing, design and optimization. Renewable Energy 2020, 154, 11 -28.

AMA Style

Valeria Palomba, Giuseppe E. Dino, Andrea Frazzica. Coupling sorption and compression chillers in hybrid cascade layout for efficient exploitation of renewables: Sizing, design and optimization. Renewable Energy. 2020; 154 ():11-28.

Chicago/Turabian Style

Valeria Palomba; Giuseppe E. Dino; Andrea Frazzica. 2020. "Coupling sorption and compression chillers in hybrid cascade layout for efficient exploitation of renewables: Sizing, design and optimization." Renewable Energy 154, no. : 11-28.

Journal article
Published: 08 January 2020 in Applied Sciences
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Salt hydrates, such as MgSO4∙7H2O, are considered attractive materials for thermal energy storage, thanks to their high theoretical storage density. However, pure salt hydrates present some challenges in real application due to agglomeration, corrosion and swelling problems during hydration/dehydration cycles. In order to overcome these limitations, a composite material based on silicone vapor-permeable foam filled with the salt hydrate is here presented. For its characterization, a real-time in situ environmental scanning electron microscopy (ESEM) investigation was carried out in controlled temperature and humidity conditions. The specific set-up was proposed as an innovative method in order to evaluate the morphological evolution of the composite material during the hydrating and dehydrating stages of the salt. The results evidenced an effective micro-thermal stability of the material. Furthermore, dehydration thermogravimetric/differential scanning calorimetric (TG/DSC) analysis confirmed the improved reactivity of the realized composite foam compared to pure MgSO4∙7H2O.

ACS Style

Elpida Piperopoulos; Luigi Calabrese; Paolo Bruzzaniti; Vincenza Brancato; Valeria Palomba; Angela Caprì; Andrea Frazzica; Luisa F. Cabeza; Edoardo Proverbio; Candida Milone. Morphological and Structural Evaluation of Hydration/Dehydration Stages of MgSO4 Filled Composite Silicone Foam for Thermal Energy Storage Applications. Applied Sciences 2020, 10, 453 .

AMA Style

Elpida Piperopoulos, Luigi Calabrese, Paolo Bruzzaniti, Vincenza Brancato, Valeria Palomba, Angela Caprì, Andrea Frazzica, Luisa F. Cabeza, Edoardo Proverbio, Candida Milone. Morphological and Structural Evaluation of Hydration/Dehydration Stages of MgSO4 Filled Composite Silicone Foam for Thermal Energy Storage Applications. Applied Sciences. 2020; 10 (2):453.

Chicago/Turabian Style

Elpida Piperopoulos; Luigi Calabrese; Paolo Bruzzaniti; Vincenza Brancato; Valeria Palomba; Angela Caprì; Andrea Frazzica; Luisa F. Cabeza; Edoardo Proverbio; Candida Milone. 2020. "Morphological and Structural Evaluation of Hydration/Dehydration Stages of MgSO4 Filled Composite Silicone Foam for Thermal Energy Storage Applications." Applied Sciences 10, no. 2: 453.

Journal article
Published: 06 January 2020 in Renewable Energy
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Salt hydrates are an appealing option to be used as sorption materials in thermal energy storage (TES). In this work, strontium bromide and magnesium sulphate have been selected as one of the most promising salt hydrates since they present high energy storage density (>130 kWh/m3) and efficiency (>20%). One of the main drawbacks of sorption materials rely on control the hydratation-dehydratation process but there are other parameters that can modify this behaviour as the corrosive potential of these salts in contact with the container material selected for the application. Hence, four different metal container materials, specifically stainless steel, copper, aluminium, and carbon steel have been tested in SrBr2·6H2O and MgSO4·7H2O hydrate salts, during 100 h at dehydratation conditions. After the gravimetric and micrograph analysis carried out via scanning electron microscopy (SEM) study, only carbon steel is not recommended for this application in contact with SrBr2·6H2O, obtaining a corrosion rate of 0.038 mm/year, with a metallographic corrosion layer thickness of 25.2 μm. Aluminium, copper and stainless steel showed a better corrosion resistance also in SrBr2·6H2O and MgSO4·7H2O with corrosion rates below 0.008 mm/year.

ACS Style

Angel G. Fernández; Margalida Fullana; Luigi Calabrese; Valeria Palomba; Andrea Frazzica; Luisa F. Cabeza. Corrosion assessment of promising hydrated salts as sorption materials for thermal energy storage systems. Renewable Energy 2020, 150, 428 -434.

AMA Style

Angel G. Fernández, Margalida Fullana, Luigi Calabrese, Valeria Palomba, Andrea Frazzica, Luisa F. Cabeza. Corrosion assessment of promising hydrated salts as sorption materials for thermal energy storage systems. Renewable Energy. 2020; 150 ():428-434.

Chicago/Turabian Style

Angel G. Fernández; Margalida Fullana; Luigi Calabrese; Valeria Palomba; Andrea Frazzica; Luisa F. Cabeza. 2020. "Corrosion assessment of promising hydrated salts as sorption materials for thermal energy storage systems." Renewable Energy 150, no. : 428-434.

Journal article
Published: 27 November 2019 in Applied Sciences
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The integration of sorption systems on-board fishing vessels has been explored in the last decade, but the limitations in power density and temperature levels achievable have hindered their application. In the present paper, the integration of hybrid sorption–compression systems was evaluated. Different shipping vessels and routes in seas and oceans were considered in the analysis, with engine powers from 190 kW to 500 kW. The feasibility of series and cascade configurations was studied and the possible benefits, in terms of fuel and CO2 savings, were evaluated. The analysis, which also considered the payload due to the extra fuel needed to transport the equipment for refrigeration, showed that up to 75% savings can be obtained, with CO2 emissions avoided up to 20 t/y.

ACS Style

Valeria Palomba; Giuseppe E. Dino; Robert Ghirlando; Christopher Micallef; Andrea Frazzica. Decarbonising the Shipping Sector: A Critical Analysis on the Application of Waste Heat for Refrigeration in Fishing Vessels. Applied Sciences 2019, 9, 5143 .

AMA Style

Valeria Palomba, Giuseppe E. Dino, Robert Ghirlando, Christopher Micallef, Andrea Frazzica. Decarbonising the Shipping Sector: A Critical Analysis on the Application of Waste Heat for Refrigeration in Fishing Vessels. Applied Sciences. 2019; 9 (23):5143.

Chicago/Turabian Style

Valeria Palomba; Giuseppe E. Dino; Robert Ghirlando; Christopher Micallef; Andrea Frazzica. 2019. "Decarbonising the Shipping Sector: A Critical Analysis on the Application of Waste Heat for Refrigeration in Fishing Vessels." Applied Sciences 9, no. 23: 5143.

Journal article
Published: 01 November 2019 in Solar Energy
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ACS Style

Valeria Palomba; Andrea Frazzica. Recent advancements in sorption technology for solar thermal energy storage applications. Solar Energy 2019, 192, 69 -105.

AMA Style

Valeria Palomba, Andrea Frazzica. Recent advancements in sorption technology for solar thermal energy storage applications. Solar Energy. 2019; 192 ():69-105.

Chicago/Turabian Style

Valeria Palomba; Andrea Frazzica. 2019. "Recent advancements in sorption technology for solar thermal energy storage applications." Solar Energy 192, no. : 69-105.

Journal article
Published: 28 September 2019 in Energy Conversion and Management
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In this paper, the experimental characterization of a latent heat storage prototype working in the range of 70–90 °C and characterized by an innovative configuration is presented. The storage consists of a Phase Change Material (PCM), namely a commercial paraffin, embedded in an asymmetric plate heat exchanger. The testing campaign was aimed at defining the effect of operating conditions (flow rate of the heat transfer fluid, charge and discharge temperatures), in terms of energy stored, power supplied to the user and storage efficiency. The results showed that the energy density stored is between 116 and 198 kJ kg−1, whereas power output during discharge varies between 4 and 10 kW. Subsequently, an analysis on part load operation was carried out, which evidenced that properly managing the storage, limiting the discharging to 80% of its maximum storage capacity, allows saving around 50% of time, thus increasing the power density. A thermal network model was proposed to study the contributions of the heat exchanger and phase change material to the overall heat transfer, demonstrating that the phase change material is limiting the heat transfer only when it is in the solid state. Finally, the storage was compared to another prototype developed by the authors employing the same material and a different heat exchanger (a fin-and-tube heat exchanger) according to different structural, energy and dynamic performance indicators. The results highlighted that the present system is especially suitable for applications with a high power demand from the user.

ACS Style

Valeria Palomba; Vincenza Brancato; Andrea Frazzica. Thermal performance of a latent thermal energy storage for exploitation of renewables and waste heat: An experimental investigation based on an asymmetric plate heat exchanger. Energy Conversion and Management 2019, 200, 112121 .

AMA Style

Valeria Palomba, Vincenza Brancato, Andrea Frazzica. Thermal performance of a latent thermal energy storage for exploitation of renewables and waste heat: An experimental investigation based on an asymmetric plate heat exchanger. Energy Conversion and Management. 2019; 200 ():112121.

Chicago/Turabian Style

Valeria Palomba; Vincenza Brancato; Andrea Frazzica. 2019. "Thermal performance of a latent thermal energy storage for exploitation of renewables and waste heat: An experimental investigation based on an asymmetric plate heat exchanger." Energy Conversion and Management 200, no. : 112121.

Journal article
Published: 01 August 2019 in Renewable Energy
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ACS Style

Luigi Calabrese; Vincenza Brancato; Valeria Palomba; Edoardo Proverbio. An experimental study on the corrosion sensitivity of metal alloys for usage in PCM thermal energy storages. Renewable Energy 2019, 138, 1018 -1027.

AMA Style

Luigi Calabrese, Vincenza Brancato, Valeria Palomba, Edoardo Proverbio. An experimental study on the corrosion sensitivity of metal alloys for usage in PCM thermal energy storages. Renewable Energy. 2019; 138 ():1018-1027.

Chicago/Turabian Style

Luigi Calabrese; Vincenza Brancato; Valeria Palomba; Edoardo Proverbio. 2019. "An experimental study on the corrosion sensitivity of metal alloys for usage in PCM thermal energy storages." Renewable Energy 138, no. : 1018-1027.

Journal article
Published: 03 July 2019 in Applied Thermal Engineering
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SAPO-34 – a silicoaluminophosphate microporous material – has recently attracted a great attention in the field of sorption thermal storage, since it is characterized by good water adsorption behavior (i.e. type V adsorption isotherms) and low regeneration temperature (i.e. 80°C, for instance available by standard solar thermal energy collectors). However, the nanoscale mechanisms of water transport and adsorption in the microporous framework of SAPO-34 cannot be fully unveiled by experiments alone. In this work, water adsorption onto SAPO-34 is for the first time studied by means of an atomistic model built upon experimental evidence. First, Monte Carlo simulations are employed to set up a convenient atomistic model of water/SAPO-34 interactions, and numerical adsorption isotherms are validated against experimental measures. Second, the validated model is used to study the water diffusion through SAPO-34 by Molecular Dynamics simulations, and to visualize preferential adsorption sites with atomistic detail. Such atomistic model validated against experiments may ease the investigation and in silico discovery of silicoaluminophosphates for thermal storage applications with tailored adsorption characteristics.

ACS Style

Matteo Fasano; Gabriele Falciani; Vincenza Brancato; Valeria Palomba; Pietro Asinari; Eliodoro Chiavazzo; Andrea Frazzica. Atomistic modelling of water transport and adsorption mechanisms in silicoaluminophosphate for thermal energy storage. Applied Thermal Engineering 2019, 160, 114075 .

AMA Style

Matteo Fasano, Gabriele Falciani, Vincenza Brancato, Valeria Palomba, Pietro Asinari, Eliodoro Chiavazzo, Andrea Frazzica. Atomistic modelling of water transport and adsorption mechanisms in silicoaluminophosphate for thermal energy storage. Applied Thermal Engineering. 2019; 160 ():114075.

Chicago/Turabian Style

Matteo Fasano; Gabriele Falciani; Vincenza Brancato; Valeria Palomba; Pietro Asinari; Eliodoro Chiavazzo; Andrea Frazzica. 2019. "Atomistic modelling of water transport and adsorption mechanisms in silicoaluminophosphate for thermal energy storage." Applied Thermal Engineering 160, no. : 114075.

Journal article
Published: 11 June 2019 in Solar Energy Materials and Solar Cells
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This paper assesses the mechanical stability and dehydration behaviour of a new composite material constituted by magnesium sulphate hepta-hydrate, used as filler at vary contents, and a porous silicone, used as matrix in order to evaluate its applicability in sorption thermal energy storage field. This new composite was developed to avoid the typical issues of salt hydrates such as swelling, agglomeration and corrosion issues occurring during hydration/dehydration process. A preliminary physical-mechanical characterization, by means of morphological and calorimetric analysis, was carried out to investigate the main properties of the composite foams. The morphological characterization showed that the foam pores were homogenously distributed and well interconnected to each other. Thermo-gravimetric dehydration tests, have demonstrated that the tested samples are able to exchange efficiently water. Static compression tests evidenced a high compression stability of the material, indicating a high flexibility of the cellular silicone structure. Furthermore, cyclic compression test was performed to evaluate the progressive loss of salt at increasing number of the cycles. After 50 cycles, a reduction of salt hydrate up to 13% was observed. This behaviour, that is potentially a critical factor in these composite structures, was studied for showing that the loss of the salt does not compromise considerably the sorption storage performance of the filled silicone foams. Eventually, the assessment of thermo-gravimetric characteristics and mechanical stability was performed on the MgSO4·7H2O silicone composite foam.

ACS Style

Luigi Calabrese; Vincenza Brancato; Valeria Palomba; Andrea Frazzica; Luisa F. Cabeza. Magnesium sulphate-silicone foam composites for thermochemical energy storage: Assessment of dehydration behaviour and mechanical stability. Solar Energy Materials and Solar Cells 2019, 200, 109992 .

AMA Style

Luigi Calabrese, Vincenza Brancato, Valeria Palomba, Andrea Frazzica, Luisa F. Cabeza. Magnesium sulphate-silicone foam composites for thermochemical energy storage: Assessment of dehydration behaviour and mechanical stability. Solar Energy Materials and Solar Cells. 2019; 200 ():109992.

Chicago/Turabian Style

Luigi Calabrese; Vincenza Brancato; Valeria Palomba; Andrea Frazzica; Luisa F. Cabeza. 2019. "Magnesium sulphate-silicone foam composites for thermochemical energy storage: Assessment of dehydration behaviour and mechanical stability." Solar Energy Materials and Solar Cells 200, no. : 109992.