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Alessandra De Angelis; Michele Libralato; Giovanni Corazza; Onorio Saro. Optimization of the Configuration of Photovoltaic and Solar Thermal Collectors in a Nearly Zero Energy Building. TECNICA ITALIANA-Italian Journal of Engineering Science 2020, 64, 179 -185.
AMA StyleAlessandra De Angelis, Michele Libralato, Giovanni Corazza, Onorio Saro. Optimization of the Configuration of Photovoltaic and Solar Thermal Collectors in a Nearly Zero Energy Building. TECNICA ITALIANA-Italian Journal of Engineering Science. 2020; 64 (2-4):179-185.
Chicago/Turabian StyleAlessandra De Angelis; Michele Libralato; Giovanni Corazza; Onorio Saro. 2020. "Optimization of the Configuration of Photovoltaic and Solar Thermal Collectors in a Nearly Zero Energy Building." TECNICA ITALIANA-Italian Journal of Engineering Science 64, no. 2-4: 179-185.
Heat and moisture (HM) transfer simulations of building envelopes and whole building energy simulations require adequate weather files. The common approach is to use weather data of reference years constructed from meteorological records. The weather record affects the capability of representing the real weather of the resulting reference years. In this paper the problem of the influence of the length of the records on the representativeness of the reference years is addressed and its effects are evaluated also for the applicative case of the moisture accumulation risk analysis with the Glaser Method and with DELPHIN 6, confirming that records shorter than 10 years could lead to less representative reference years. On the other hand, it is shown that reference years obtained from longer periods are not representative of the most recent years, which present higher dry-bulb air temperatures due to a short-term climate change effect observed in all the considered weather records. An alternative representative year (Moisture Representative Year) to be used in building energy simulations with a strong dependence on moisture is presented.
Michele Libralato; Giovanni Murano; Alessandra De Angelis; Onorio Saro; Vincenzo Corrado. Influence of the Meteorological Record Length on the Generation of Representative Weather Files. Energies 2020, 13, 2103 .
AMA StyleMichele Libralato, Giovanni Murano, Alessandra De Angelis, Onorio Saro, Vincenzo Corrado. Influence of the Meteorological Record Length on the Generation of Representative Weather Files. Energies. 2020; 13 (8):2103.
Chicago/Turabian StyleMichele Libralato; Giovanni Murano; Alessandra De Angelis; Onorio Saro; Vincenzo Corrado. 2020. "Influence of the Meteorological Record Length on the Generation of Representative Weather Files." Energies 13, no. 8: 2103.
Modern electric and electronic equipment in energy-intensive industries, including electric steelmaking plants, are often housed in outdoor cabins. In a similar manner as data centres, such installations must be air conditioned to remove excess heat and to avoid damage to electric components. Cooling systems generally display a water–energy nexus behaviour, mainly depending on associated heat dissipation systems. Hence, it is desirable to identify configurations achieving both water and energy savings for such installations. This paper compares two alternative energy-saving configurations for air conditioning electric cabins at steelmaking sites—that is, an absorption cooling based system exploiting industrial waste heat, and an airside free-cooling-based system—against the traditional configuration. All systems were combined with either dry coolers or cooling towers for heat dissipation. We calculated water and carbon footprint indicators, primary energy demand and economic indicators by building a TRNSYS simulation model of the systems and applying it to 16 worldwide ASHRAE climate zones. In nearly all conditions, waste-heat recovery-based solutions were found to outperform both the baseline and the proposed free-cooling solution regarding energy demand and carbon footprint. When cooling towers were used, free cooling was a better option in terms water footprint in cold climates.
Maurizio Santin; Damiana Chinese; Onorio Saro; Alessandra De Angelis; Alberto Zugliano. Carbon and Water Footprint of Energy Saving Options for the Air Conditioning of Electric Cabins at Industrial Sites. Energies 2019, 12, 3627 .
AMA StyleMaurizio Santin, Damiana Chinese, Onorio Saro, Alessandra De Angelis, Alberto Zugliano. Carbon and Water Footprint of Energy Saving Options for the Air Conditioning of Electric Cabins at Industrial Sites. Energies. 2019; 12 (19):3627.
Chicago/Turabian StyleMaurizio Santin; Damiana Chinese; Onorio Saro; Alessandra De Angelis; Alberto Zugliano. 2019. "Carbon and Water Footprint of Energy Saving Options for the Air Conditioning of Electric Cabins at Industrial Sites." Energies 12, no. 19: 3627.
The purpose of this article is to present and validate a computationally efficient numerical approach for the calculation of the ground-coupled heat transfer in buildings with periodic boundary conditions. When the boundary conditions of the heat transfer problem are described by periodic functions, it is possible to consider the transient state problem as a quasi-stationary problem with considerable savings in terms of computational time. The method is presented in detail from a mathematical point of view, together with a validation for two simple cases of slab-on-grade thermal losses, four comparisons with the ISO 13370:2007 procedure, a case with a complex shape and an evaluation of the computational efficiency.
M. Libralato; A. De Angelis; O. Saro. Evaluation of the ground-coupled quasi-stationary heat transfer in buildings by means of an accurate and computationally efficient numerical approach and comparison with the ISO 13370 procedure. Journal of Building Performance Simulation 2019, 12, 719 -727.
AMA StyleM. Libralato, A. De Angelis, O. Saro. Evaluation of the ground-coupled quasi-stationary heat transfer in buildings by means of an accurate and computationally efficient numerical approach and comparison with the ISO 13370 procedure. Journal of Building Performance Simulation. 2019; 12 (5):719-727.
Chicago/Turabian StyleM. Libralato; A. De Angelis; O. Saro. 2019. "Evaluation of the ground-coupled quasi-stationary heat transfer in buildings by means of an accurate and computationally efficient numerical approach and comparison with the ISO 13370 procedure." Journal of Building Performance Simulation 12, no. 5: 719-727.
The Glaser method is an assessment procedure for the risk of moisture accumulation in building mono-dimensional structures, that could be used to evaluate mould risk and interstitial condensation risk.It is based on a simplified model that does not represent the real phenomenon and its limitations are well-known qualitatively.This work provides a comparison in terms of moisture content between the Glaser method and WUFI Pro, an advanced heat, air and moisture transfer prediction tool. First the influence of material properties is evaluated on four fictitious materials walls, then six different building envelope typologies for six weather files from Central and Southern Europe are modelled to evaluate the Glaser method results.The effects of the Glaser method simplifications are quantified in terms of moisture content percentage difference.
Michele Libralato; Onorio Saro; Alessandra de Angelis; Simone Spinazzè. Comparison between Glaser Method and Heat, Air and Moisture Transient Model for Moisture Migration in Building Envelopes. Applied Mechanics and Materials 2019, 887, 385 -392.
AMA StyleMichele Libralato, Onorio Saro, Alessandra de Angelis, Simone Spinazzè. Comparison between Glaser Method and Heat, Air and Moisture Transient Model for Moisture Migration in Building Envelopes. Applied Mechanics and Materials. 2019; 887 ():385-392.
Chicago/Turabian StyleMichele Libralato; Onorio Saro; Alessandra de Angelis; Simone Spinazzè. 2019. "Comparison between Glaser Method and Heat, Air and Moisture Transient Model for Moisture Migration in Building Envelopes." Applied Mechanics and Materials 887, no. : 385-392.
Water temperature plays a relevant role in the growth and development of plants in floating system\ud cultivation, thus affecting both productivity and quality. A model of a greenhouse which hosts ponds is\ud described, in order to highlight the components of the energy balance and estimate the refrigerating\ud power required to maintain the nutrient solution within acceptable limits. A water cooling plant powered\ud by an electrical water chiller is considered. Results from this model include the prediction of the air\ud temperature and nutrient solution temperature in transient conditions during the growth periods,\ud together with the electrical energy absorption and related operating costs. After a validation by comparison\ud with measured data, simulations are performed at six climate conditions, from typical warm\ud Mediterranean to cold continental conditions.\ud Important energy savings can be achieved by maintaining the water covered by boards during harvesting\ud at the end of the growing cycle. Furthermore, the water cooling system can be designed to be\ud reversible and perform air heating in winter time, with the aim of extending the growing period. The\ud amount of heating power required by the heating system in winter time is thus estimate
Giovanni Cortella; Onorio Saro; Alessandra De Angelis; Luca Ceccotti; Nicola Tomasi; Luisa Dalla Costa; Lara Manzocco; Roberto Pinton; Tanja Mimmo; Stefano Cesco. Temperature control of nutrient solution in floating system cultivation. Applied Thermal Engineering 2014, 73, 1055 -1065.
AMA StyleGiovanni Cortella, Onorio Saro, Alessandra De Angelis, Luca Ceccotti, Nicola Tomasi, Luisa Dalla Costa, Lara Manzocco, Roberto Pinton, Tanja Mimmo, Stefano Cesco. Temperature control of nutrient solution in floating system cultivation. Applied Thermal Engineering. 2014; 73 (1):1055-1065.
Chicago/Turabian StyleGiovanni Cortella; Onorio Saro; Alessandra De Angelis; Luca Ceccotti; Nicola Tomasi; Luisa Dalla Costa; Lara Manzocco; Roberto Pinton; Tanja Mimmo; Stefano Cesco. 2014. "Temperature control of nutrient solution in floating system cultivation." Applied Thermal Engineering 73, no. 1: 1055-1065.
Giulio Lorenzini; Onorio Saro. Thermal fluid dynamic modelling of a water droplet evaporating in air. International Journal of Heat and Mass Transfer 2013, 62, 323 -335.
AMA StyleGiulio Lorenzini, Onorio Saro. Thermal fluid dynamic modelling of a water droplet evaporating in air. International Journal of Heat and Mass Transfer. 2013; 62 ():323-335.
Chicago/Turabian StyleGiulio Lorenzini; Onorio Saro. 2013. "Thermal fluid dynamic modelling of a water droplet evaporating in air." International Journal of Heat and Mass Transfer 62, no. : 323-335.
Matteo D'Antoni; Onorio Saro. Massive Solar-Thermal Collectors: A critical literature review. Renewable and Sustainable Energy Reviews 2012, 16, 3666 -3679.
AMA StyleMatteo D'Antoni, Onorio Saro. Massive Solar-Thermal Collectors: A critical literature review. Renewable and Sustainable Energy Reviews. 2012; 16 (6):3666-3679.
Chicago/Turabian StyleMatteo D'Antoni; Onorio Saro. 2012. "Massive Solar-Thermal Collectors: A critical literature review." Renewable and Sustainable Energy Reviews 16, no. 6: 3666-3679.
Gianluca Rapone; Onorio Saro. Optimisation of curtain wall façades for office buildings by means of PSO algorithm. Energy and Buildings 2012, 45, 189 -196.
AMA StyleGianluca Rapone, Onorio Saro. Optimisation of curtain wall façades for office buildings by means of PSO algorithm. Energy and Buildings. 2012; 45 ():189-196.
Chicago/Turabian StyleGianluca Rapone; Onorio Saro. 2012. "Optimisation of curtain wall façades for office buildings by means of PSO algorithm." Energy and Buildings 45, no. : 189-196.
Decisions on space heating of industrial buildings involve several conflicting objectives and solutions prospected by economic optimization (e.g. life cycle cost minimization) models may be far from the real preferences of decision makers. To overcome this limit, multi-criteria decision analysis which has hardly been used at single building level, especially in industrial contexts, could be a helpful methodology. This paper presents the application of a well-known multi-criteria approach, the Analytic Hierarchy Process (AHP), to the selection of space heating systems for an industrial building. We discuss the technologies available for industrial heating, criteria elicited from the decision maker and the ranking of alternatives identified with our AHP model. As very little is reported in literature about industrial energy system choices, our study, although focused on an individual case, may shed some light on decision making in this sector. To this end, we also compare our results with evidence on residential heating systems choices derived from literature. Investment costs are the most important criterion for industry, whereas qualitative attributes and operational costs are most important for homes. Qualitative attributes also significantly affect industrial heating system choices and, as the AHP is particularly effective in handling these aspects, we suggest it could be used for tactical energy planning models.
Damiana Chinese; Gioacchino Nardin; Onorio Saro. Multi-criteria analysis for the selection of space heating systems in an industrial building. Energy 2011, 36, 556 -565.
AMA StyleDamiana Chinese, Gioacchino Nardin, Onorio Saro. Multi-criteria analysis for the selection of space heating systems in an industrial building. Energy. 2011; 36 (1):556-565.
Chicago/Turabian StyleDamiana Chinese; Gioacchino Nardin; Onorio Saro. 2011. "Multi-criteria analysis for the selection of space heating systems in an industrial building." Energy 36, no. 1: 556-565.
Marco Manzan; Onorio Saro. Numerical analysis of heat and mass transfer in a passive building component cooled by water evaporation. Energy and Buildings 2002, 34, 369 -375.
AMA StyleMarco Manzan, Onorio Saro. Numerical analysis of heat and mass transfer in a passive building component cooled by water evaporation. Energy and Buildings. 2002; 34 (4):369-375.
Chicago/Turabian StyleMarco Manzan; Onorio Saro. 2002. "Numerical analysis of heat and mass transfer in a passive building component cooled by water evaporation." Energy and Buildings 34, no. 4: 369-375.