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Zeyu Peng
School of Electric Power, South China University of Technology, Guangzhou, China

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Research article
Published: 29 June 2021 in International Journal of Green Energy
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The solar absorption-subcooled compression hybrid cooling system (SASCHCS), in which the cooling capacity of absorption subsystem serves as the subcooling power of compression subsystem, is energy-efficient for high-rise buildings. Because the existing design guideline of system is based on the conventional exergy theory and the advanced exergy analysis of absorption and vapor compression chillers is from the endogenous avoidable portion instead of the sum of the avoidable exergy destruction, it is incapable to design the SASCHCS exactly by such findings. As a result, the systematical advanced exergy analysis of SASCHCS is performed. The advanced exergy model of facilities is built at first. Subsequently, various exergy destructions for different conditions are analyzed. Finally, the improvement potential of components is assessed based on the sum of the avoidable exergy destruction, defined as the sum of endogenous avoidable portion of k-th component and exogenous one of remaining components led by irreversibilities of k-th component. Though the compressor concentrates the most exergy destruction of SASCHCS, 62% of its exogenous exergy destruction is caused by the irreversibilities of the condenser of the compression subsystem, making the condenser the most important component of SASCHCS. The paper is helpful to promote the design of SASCHCS. Graphical abstract

ACS Style

Junquan Zeng; Zeyu Li; Zeyu Peng. Advanced exergy analysis of solar absorption-subcooled compression hybrid cooling system. International Journal of Green Energy 2021, 1 -23.

AMA Style

Junquan Zeng, Zeyu Li, Zeyu Peng. Advanced exergy analysis of solar absorption-subcooled compression hybrid cooling system. International Journal of Green Energy. 2021; ():1-23.

Chicago/Turabian Style

Junquan Zeng; Zeyu Li; Zeyu Peng. 2021. "Advanced exergy analysis of solar absorption-subcooled compression hybrid cooling system." International Journal of Green Energy , no. : 1-23.

Journal article
Published: 06 May 2021 in Sustainable Energy Technologies and Assessments
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The energy saving of solar absorption-subcooled compression hybrid cooling system (SASCHCS) for cold storages is dramatically lower than its upper limit. Such phenomenon is attributed to that heat capacities of subcoolers are too small to guarantee the reliable operation of large size absorption subsystems. The cool energy buffer is employed to address above-mentioned issues. In this regard, appropriate design guidelines are highly important because the cool energy buffer inevitably leads to losses of solar cooling power and increases the capital cost. As a result, three layouts, traditional SASCHCS, SASCHCS with the cool energy buffer including and excluding the shift of solar cooling power, are compared technically and financially based on the 8760 h annual simulation and the parametric analysis of the best layout is implemented. Finally, three layouts are optimized by the genetic algorithm. It is displayed that the SASCHCS with the cool energy buffer excluding the shift of solar cooling power is the best and 11.4% of compressor work is saved. Additionally, its least payback period is 4.69 y and the maximal net present value is 2.88 million CNY, respectively. The proposed layout can be connected with photovoltaic thermal collectors and solar power plants for trigeneration purpose.

ACS Style

Yongrui Xu; Zeyu Li; Hongkai Chen; Shiliang Lv. Techno-economic evaluation and analysis of solar hybrid cooling systems with cool energy buffer for cold storages. Sustainable Energy Technologies and Assessments 2021, 46, 101270 .

AMA Style

Yongrui Xu, Zeyu Li, Hongkai Chen, Shiliang Lv. Techno-economic evaluation and analysis of solar hybrid cooling systems with cool energy buffer for cold storages. Sustainable Energy Technologies and Assessments. 2021; 46 ():101270.

Chicago/Turabian Style

Yongrui Xu; Zeyu Li; Hongkai Chen; Shiliang Lv. 2021. "Techno-economic evaluation and analysis of solar hybrid cooling systems with cool energy buffer for cold storages." Sustainable Energy Technologies and Assessments 46, no. : 101270.

Journal article
Published: 14 August 2020 in Applied Thermal Engineering
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The solar absorption-subcooled compression hybrid cooling system is an economically viable energy-saving solution for cold storage refrigeration system. However, the thermodynamic and economic performance of this system has not been assessed specifically for cold storage. Additionally, the system performance strongly depends on the appropriate design of critical parameters, which has not been previously analyzed either. Therefore, a technical and financial evaluation of the solar absorption-subcooled compression hybrid cooling system for cold storage is implemented systematically in this study based on the simulation of the typical days. The effects of the absorption subsystem size and storage tank volume are analyzed. Furthermore, global optimization is performed using the genetic algorithm. It is determined the optimal design is as follows an absorption subsystem size of 0.04-0.06 kW/m2 with a storage tank volume of 40-60 L/m2 for the case in which the collector area (2000 m2) is half the available area. The peak annual electric energy savings is 68.8 kWh/m2. The solar absorption-subcooled compression hybrid cooling system is economically viable for cold storage without any subsidy and the minimum payback period is 4.96 y. This study can be beneficial for the effective and feasible reduction of the energy consumption of cold storage refrigeration systems.

ACS Style

Yongrui Xu; Zeyu Li; Hongkai Chen; Shiliang Lv. Assessment and optimization of solar absorption-subcooled compression hybrid cooling system for cold storage. Applied Thermal Engineering 2020, 180, 115886 .

AMA Style

Yongrui Xu, Zeyu Li, Hongkai Chen, Shiliang Lv. Assessment and optimization of solar absorption-subcooled compression hybrid cooling system for cold storage. Applied Thermal Engineering. 2020; 180 ():115886.

Chicago/Turabian Style

Yongrui Xu; Zeyu Li; Hongkai Chen; Shiliang Lv. 2020. "Assessment and optimization of solar absorption-subcooled compression hybrid cooling system for cold storage." Applied Thermal Engineering 180, no. : 115886.

Journal article
Published: 25 June 2020 in Solar Energy
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The solar trigeneration system based on coupling photovoltaic thermal (PVT) collectors with an absorption-subcooled compression hybrid cooling configuration has the potential for enhancing solar energy utilization in buildings. Considering time-of-use electricity pricing, the availability of solar cooling often does not coincide with on-peak periods during which electricity prices are high. To benefit from time-of-use pricing for greater economic profitability, sensible heat thermal storage is potential options. However, changeable storage tank temperature affects not only solar cooling capacity but also the electrical output of PVT collectors. Thus, in this work, three operation schemes (i.e., a conventional scheme, heat energy storage and cool energy storage schemes) are compared, and the effect of key design parameters on system performance is analyzed. Models for different system layouts and a conventional photovoltaic (PV-only) system are developed by programming with MATLAB. Annual (8760-hour) simulations are performed based on a case study for a high-rise hotel in subtropical cities. The results for Guangzhou show that the system layout, integrating cool energy storage and glazed PVT collectors with low-emissivity coatings, achieves the highest total electricity cost saving, which is 16% higher than that of the PV-only system. Its total solar energy utilization efficiency is 0.321, which is 2.4 times that of the PV-only system. The novelty of this work is that it provides an appropriate energy storage strategy and the design guidelines of key parameters for PVT-based solar trigeneration systems. This work is helpful for PVT-based solar trigeneration systems to improve operating cost savings under time-of-use electricity pricing.

ACS Style

Hongkai Chen; Zeyu Li; Yongrui Xu. Assessment and parametric analysis of solar trigeneration system integrating photovoltaic thermal collectors with thermal energy storage under time-of-use electricity pricing. Solar Energy 2020, 206, 875 -899.

AMA Style

Hongkai Chen, Zeyu Li, Yongrui Xu. Assessment and parametric analysis of solar trigeneration system integrating photovoltaic thermal collectors with thermal energy storage under time-of-use electricity pricing. Solar Energy. 2020; 206 ():875-899.

Chicago/Turabian Style

Hongkai Chen; Zeyu Li; Yongrui Xu. 2020. "Assessment and parametric analysis of solar trigeneration system integrating photovoltaic thermal collectors with thermal energy storage under time-of-use electricity pricing." Solar Energy 206, no. : 875-899.

Journal article
Published: 13 May 2020 in Energy Conversion and Management
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Solar trigeneration systems based on photovoltaic-thermal collectors can play a positive role in promoting renewable energy integration in buildings. Usually, low-grade solar heat produced by photovoltaic-thermal collectors does not meet the temperature requirement for driving absorption chillers, leading to unsatisfactory system performance. In this study, the solar absorption-subcooled compression hybrid cooling system, which is capable of utilizing heat at temperatures as low as 60 °C, is coupled with photovoltaic-thermal collectors to be a low-grade solar trigeneration system. In spite of heat recovery for heating and cooling, the electrical output of collectors decreases, due to the losses caused by the additional glass cover and elevated operating temperature. Therefore, through quasi-steady simulations based on annual meteorological data of three subtropical cities, this system is assessed from energy, economic and environmental viewpoints. The results show that in Guangzhou, the specific annual electricity saving of this system is up to 170.6 kWh/m2, which is 17.3% higher than that of a comparable photovoltaic system. The parametric analysis suggests that increasing the solar filed area gives rise to a shorter payback period. With the maximum available solar filed area of 600 m2, the minimum payback period and the maximum electricity saving can be achieved by the absorption subsystem capacities of around 40 kW and 180 kW, respectively. The most economically viable system is obtained in Zhuhai where annual solar irradiation is close to 1400 kWh/m2 and electricity prices are relatively high. This study is useful for the development of solar trigeneration systems based on photovoltaic-thermal collectors and energy saving in modern cities.

ACS Style

Zeyu Li; Hongkai Chen; Yongrui Xu; Kim Tiow Ooi. Comprehensive evaluation of low-grade solar trigeneration system by photovoltaic-thermal collectors. Energy Conversion and Management 2020, 215, 112895 .

AMA Style

Zeyu Li, Hongkai Chen, Yongrui Xu, Kim Tiow Ooi. Comprehensive evaluation of low-grade solar trigeneration system by photovoltaic-thermal collectors. Energy Conversion and Management. 2020; 215 ():112895.

Chicago/Turabian Style

Zeyu Li; Hongkai Chen; Yongrui Xu; Kim Tiow Ooi. 2020. "Comprehensive evaluation of low-grade solar trigeneration system by photovoltaic-thermal collectors." Energy Conversion and Management 215, no. : 112895.

Journal article
Published: 23 January 2020 in Applied Sciences
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The solar absorption-subcooled compression hybrid cooling system (SASCHCS) is tech-economically feasible for high-rise buildings. Since such a system operates with no auxiliary heat source, the performance coupling of its absorption subsystem and solar collectors is sensitive to the variation of hot water flow rate. In this regard, the relationship of system performance and hot water flow rate is required to be clarified exactly. Therefore, this paper aims to illustrate the effect mechanism of hot water flow rate and to propose the corresponding decision criterion. The case study is based on a typical high-rise office building in subtropical Guangzhou. The daily working process of this system with different hot water flow rates is simulated and analyzed. Subsequently, the useful heat of collectors and cooling capacity of the absorption subsystem with the hot water flow rate is discussed in detail. The results show that the SASCHCS operates with hot water temperatures ranging from 60 °C to 90 °C. The energy saving increases with the rise of hot water flow rate, but such variation tends to be flat for the excessively high flow rate. As the collector flow rate increases from 1 m3/h to 10 m3/h, the daily energy saving improves by 21% in August. Similarly, the daily energy saving increases by 37.5% as generator hot water flow rate increases from 1 m3/h to 10 m3/h. In addition, the collector flow rate of 3.6 m3/h (13.33 (kg/m2 h)) and the generator flow rate of 5.2 m3/h (19.26 (kg/m2 h)) are optimal for the annual operation, with considering power consumption of water pumps. This paper is helpful for the improvement of SASCHCS operating performance.

ACS Style

Jinfang Zhang; Zeyu Li; Yue Jing; Yongrui Xu. Performance of Solar Absorption-Subcooled Compression Hybrid Cooling System for Different Flow Rates of Hot Water. Applied Sciences 2020, 10, 810 .

AMA Style

Jinfang Zhang, Zeyu Li, Yue Jing, Yongrui Xu. Performance of Solar Absorption-Subcooled Compression Hybrid Cooling System for Different Flow Rates of Hot Water. Applied Sciences. 2020; 10 (3):810.

Chicago/Turabian Style

Jinfang Zhang; Zeyu Li; Yue Jing; Yongrui Xu. 2020. "Performance of Solar Absorption-Subcooled Compression Hybrid Cooling System for Different Flow Rates of Hot Water." Applied Sciences 10, no. 3: 810.

Journal article
Published: 29 December 2019 in Applied Sciences
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The solar absorption-subcooled compression hybrid cooling system (SASCHCS) displays outstanding advantages in high-rise buildings. Since the performance coupling of collectors and absorption subsystems is stronger due to the absence of backup heat and the effect of generator setting temperature has not been realized adequately, it is highly important to study the relationship of SASCHCS operation and the set point temperature of hot water to prevent performance deterioration by inappropriate settings. Therefore, the paper mainly deals with the effect of collector and generator setting temperature. The investigation was based on the entire cooling period of a typical high-rise office building in subtropical Guangzhou. The off-design model of hybrid systems was built at first. Subsequently, the impact mechanism of setting temperature in two hot water cycles on facility operation was analyzed. It was found that the excessive rise of collector setting temperature deteriorated the energy saving, while the appropriate improvement of generator set point temperature was beneficial for the solar cooling. Besides, global optimization by the genetic algorithm displayed that 71.6 °C for the collector setting temperature with 64.5 °C for the generator was optimal for annual operation. The paper is helpful in enhancing the operation performance of SASCHCS.

ACS Style

Jinfang Zhang; Zeyu Li; Hongkai Chen; Yongrui Xu. Effect of Hot Water Setting Temperature on Performance of Solar Absorption-Subcooled Compression Hybrid Cooling Systems. Applied Sciences 2019, 10, 258 .

AMA Style

Jinfang Zhang, Zeyu Li, Hongkai Chen, Yongrui Xu. Effect of Hot Water Setting Temperature on Performance of Solar Absorption-Subcooled Compression Hybrid Cooling Systems. Applied Sciences. 2019; 10 (1):258.

Chicago/Turabian Style

Jinfang Zhang; Zeyu Li; Hongkai Chen; Yongrui Xu. 2019. "Effect of Hot Water Setting Temperature on Performance of Solar Absorption-Subcooled Compression Hybrid Cooling Systems." Applied Sciences 10, no. 1: 258.

Journal article
Published: 23 August 2019 in Energy Conversion and Management
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Solar trigeneration systems based on photovoltaic thermal (PVT) collectors are promising for enhancement of solar energy utilization. Single-effect LiBr-H2O absorption chillers are usually employed in these systems. Since the temperature of solar heat from PVT collectors is low, half-effect absorption chillers are potential alternatives for performance improvement. However, the coefficient of performance (COP) of half-effect absorption chillers is lower than that of single-effect machines. Therefore, the comparison of solar trigeneration systems with both types of chillers is necessary. Four different system layouts, obtained by coupling glazed and unglazed flat-plate PVT collectors with single- and half-effect absorption chillers, are modeled. Annual (8760-hour) simulations are performed to evaluate and compare the thermodynamic and economic performances of different layouts. The results show that the system layout based on glazed PVT collectors coupled with half-effect absorption chillers achieves the highest Solar COP of 0.072 and the highest solar utilization factor of 0.241. Its specific electricity saving is 158.5 kWh/(m2·year), the highest among all the layouts. Additionally, the payback period of the layout based on unglazed PVT collectors coupled with half-effect absorption chillers is 12.7 years, the lowest among all the layouts. This paper is helpful for the development and design of solar trigeneration systems based on PVT collectors in subtropical climates.

ACS Style

Hongkai Chen; Zeyu Li; Yongrui Xu. Evaluation and comparison of solar trigeneration systems based on photovoltaic thermal collectors for subtropical climates. Energy Conversion and Management 2019, 199, 111959 .

AMA Style

Hongkai Chen, Zeyu Li, Yongrui Xu. Evaluation and comparison of solar trigeneration systems based on photovoltaic thermal collectors for subtropical climates. Energy Conversion and Management. 2019; 199 ():111959.

Chicago/Turabian Style

Hongkai Chen; Zeyu Li; Yongrui Xu. 2019. "Evaluation and comparison of solar trigeneration systems based on photovoltaic thermal collectors for subtropical climates." Energy Conversion and Management 199, no. : 111959.

Journal article
Published: 25 April 2019 in Solar Energy
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The solar absorption-subcooled compression hybrid cooling system (SASCHCS) is to be the economically feasible solution for the high-rise building. But the system has been seldom studied experimentally in the existing open literatures. Therefore, the prototype of SASCHCS is developed to measure the operational performance. The absorption subsystem is driven by the 27 m2 of stationary compound parabolic collector exclusively. And the test is based on the sunny day without and with fluctuation as well as cloudy day of subtropical Guangzhou. It is found that the outlet temperature of chilled water in the absorption chiller exceeds 22 °C since the cooling output of absorption subsystem serves as the subcooling power of compression subsystem. Consequently, the low grade solar energy of which temperature is higher than 60 °C can be used. The peak instantaneous cooling power and coefficient of performance (COP) of absorption subsystem is 4 kW and 0.69, respectively. Besides, the daily mean solar COP (SCOP) of absorption subsystem/daily average rise of COP in the compression subsystem on the sunny day, sunny day with fluctuation and cloudy day is 0.21/22.2%, 0.2/19.8% and 0.13/13.3%, respectively. The paper is helpful to adequately realize the real operation performance of SASCHCS and promote its further improvement.

ACS Style

Jianting Yu; Zeyu Li; Erjian Chen; Yongrui Xu; Hongkai Chen; Le Wang. Experimental assessment of solar absorption-subcooled compression hybrid cooling system. Solar Energy 2019, 185, 245 -254.

AMA Style

Jianting Yu, Zeyu Li, Erjian Chen, Yongrui Xu, Hongkai Chen, Le Wang. Experimental assessment of solar absorption-subcooled compression hybrid cooling system. Solar Energy. 2019; 185 ():245-254.

Chicago/Turabian Style

Jianting Yu; Zeyu Li; Erjian Chen; Yongrui Xu; Hongkai Chen; Le Wang. 2019. "Experimental assessment of solar absorption-subcooled compression hybrid cooling system." Solar Energy 185, no. : 245-254.

Journal article
Published: 14 March 2019 in Applied Thermal Engineering
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Subcooling is effective for the energy saving of refrigeration system. As one of the critical issues associated with the thermodynamic essence of system, the quantitative relationship of increased cooling capacity and subcooling power has not been realized comprehensively and exactly. Consequently, the paper contributes to the systematic study of enhanced cooling output by the subcooling by experiment. Two traditional modes of electronic expansion valve, i.e., fixed opening and constant superheating, are considered. The RICOSP defined as the rise of cooling capacity to the subcooling power is employed as the critical parameter and measured for different subcooling powers, compressor speeds and flow rates of chilled water. It is exhibited the RICOSPs for different working conditions regarding two modes of expansion valve are opposite. Besides, it is observed that the enhanced cooling capacity can surpass the subcooling power in the fixed opening mode of throttling valve. The paper is helpful to deepen the understanding of conversion regarding subcooling power to enhancement of cooling capacity in the subcooling refrigeration system.

ACS Style

Erjian Chen; Zeyu Li; Jianting Yu; Yongrui Xu; Yueping Yu. Experimental research of increased cooling output by dedicated subcooling. Applied Thermal Engineering 2019, 154, 9 -17.

AMA Style

Erjian Chen, Zeyu Li, Jianting Yu, Yongrui Xu, Yueping Yu. Experimental research of increased cooling output by dedicated subcooling. Applied Thermal Engineering. 2019; 154 ():9-17.

Chicago/Turabian Style

Erjian Chen; Zeyu Li; Jianting Yu; Yongrui Xu; Yueping Yu. 2019. "Experimental research of increased cooling output by dedicated subcooling." Applied Thermal Engineering 154, no. : 9-17.

Journal article
Published: 13 December 2018 in Applied Sciences
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The solar absorption-subcooled compression hybrid cooling system (SASCHCS) is potentially an economical solution for high-rise buildings. The hybrid system is subjected to off-design operation frequently, owing to the changes in solar irradiance and cooling demand. However, a large amount of iterations and difficult convergence are encountered in the traditional off-design modeling. Hence, our present study contributes to the development of an off-design model that is exact and can be solved conveniently. A novel modeling method based on the combination of an absorption subsystem described by the characteristic equation and a compression subsystem modeled by the lumped parameter method is proposed. A prototype and corresponding experimental system are developed to verify the model. A good agreement between the theoretical result and test data is displayed. The maximum deviation is less than 4%. Subsequently, the performance of the facility for different operating conditions is simulated and analyzed. We found that the subcooling power relies significantly on the compressor speed, i.e., a reduction by 58.6% when the compressor speed reduces by 80%. In addition, a high temperature and low flow rate of cooling water in the compression subsystem is adverse to the performance of the hybrid system. Our study can serve as the foundation for the operational analysis of the solar absorption-subcooled compression hybrid cooling system as well as promote its development.

ACS Style

Zeyu Li; Jianting Yu; Erjian Chen; Yue Jing. Off-Design Modeling and Simulation of Solar Absorption-Subcooled Compression Hybrid Cooling System. Applied Sciences 2018, 8, 2612 .

AMA Style

Zeyu Li, Jianting Yu, Erjian Chen, Yue Jing. Off-Design Modeling and Simulation of Solar Absorption-Subcooled Compression Hybrid Cooling System. Applied Sciences. 2018; 8 (12):2612.

Chicago/Turabian Style

Zeyu Li; Jianting Yu; Erjian Chen; Yue Jing. 2018. "Off-Design Modeling and Simulation of Solar Absorption-Subcooled Compression Hybrid Cooling System." Applied Sciences 8, no. 12: 2612.

Journal article
Published: 23 November 2018 in Energy Conversion and Management
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The solar absorption-subcooled compression hybrid cooling system (SASCHCS) is subjected to the off-design operation due to the variation of solar irradiance and cooling load. Therefore, the recent design based on the specific condition is difficult to make the system cost-effective in the entire working range. This paper mainly deals with the exergoeconomic design criterion of hybrid system based on the variable working conditions to access the trade-off of investment cost and performance in the whole working condition. The SASCHCS employed in the low-rise building and the high-rise building is considered. Besides, twenty-four cases with different important parameters, i.e., the size of absorption subsystem, condenser and evaporator of compression subsystem as well as isentropic efficiency of compressor, are analyzed in detail. The product cost flow rate and relative cost difference are taken as the decision variables. The exergoeconomic off-design model is developed at first. Subsequently, the decision variables for different temperatures of hot water and cooling water as well as load level is obtained and analyzed. It is found that the difference of the design guideline for the system used in the low-rise building and high-rise building lies in the size of absorption subsystem and condenser, i.e., the lowest scale of absorption chiller is appropriate when the temperature of hot water is less than 75 °C for the facility applied in the low-rise building, but the largest size of absorption subsystem is attractive in the entire range of hot water temperature as the hybrid system is used in the high-rise building. This paper is positive for the development of design theory and helpful to design the cost-effective SASCHCS under the entire working range.

ACS Style

Yue Jing; Zeyu Li; Hongkai Chen; Shengzi Lu; Shiliang Lv. Exergoeconomic design criterion of solar absorption-subcooled compression hybrid cooling system based on the variable working conditions. Energy Conversion and Management 2018, 180, 889 -903.

AMA Style

Yue Jing, Zeyu Li, Hongkai Chen, Shengzi Lu, Shiliang Lv. Exergoeconomic design criterion of solar absorption-subcooled compression hybrid cooling system based on the variable working conditions. Energy Conversion and Management. 2018; 180 ():889-903.

Chicago/Turabian Style

Yue Jing; Zeyu Li; Hongkai Chen; Shengzi Lu; Shiliang Lv. 2018. "Exergoeconomic design criterion of solar absorption-subcooled compression hybrid cooling system based on the variable working conditions." Energy Conversion and Management 180, no. : 889-903.

Journal article
Published: 30 March 2018 in Energy Conversion and Management
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An optimized design for a solar absorption-subcooled compression hybrid cooling system used in low-rise buildings is complicated because of the overall considerations involving increases in investment costs and energy savings, which are associated with an increase in the size of the absorption subsystem. To this end, this paper’s main contribution lies in its exergoeconomic-optimized design of a solar absorption-subcooled compression hybrid cooling system employed in low-rise buildings for different design cases. In this paper, not only the minimum product-cost flow rate but also the lowest relative cost difference is taken as the objective function owing to the notable changes in fuel cost flow rates. The results of the exergoeconomic optimization shows that the actual cooling capacity of the absorption subsystem should not be designed based only on the maximum collector area. Instead, the actual installed collector area should be determined by the optimal cooling capacity of the absorption subsystem. It was also found that the optimal cooling capacity of the absorption subsystem strongly depends on solar irradiance and cooling demands. In addition, optimal sizes for the absorption subsystem should be designed according to the different minimum product cost flow rates or the lowest relative cost difference, and this difference is sensitive to the local mean solar irradiance but weakly relies on the cooling demand. The paper is helpful in its cost-effective design for a solar absorption-subcooled compression hybrid cooling system used in low-rise buildings.

ACS Style

Yue Jing; Zeyu Li; Liming Liu; Shengzi Lu; Shiliang Lv. Exergoeconomic-optimized design of a solar absorption-subcooled compression hybrid cooling system for use in low-rise buildings. Energy Conversion and Management 2018, 165, 465 -476.

AMA Style

Yue Jing, Zeyu Li, Liming Liu, Shengzi Lu, Shiliang Lv. Exergoeconomic-optimized design of a solar absorption-subcooled compression hybrid cooling system for use in low-rise buildings. Energy Conversion and Management. 2018; 165 ():465-476.

Chicago/Turabian Style

Yue Jing; Zeyu Li; Liming Liu; Shengzi Lu; Shiliang Lv. 2018. "Exergoeconomic-optimized design of a solar absorption-subcooled compression hybrid cooling system for use in low-rise buildings." Energy Conversion and Management 165, no. : 465-476.

Journal article
Published: 17 February 2018 in Entropy
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The paper mainly deals with the match of solar refrigeration, i.e., solar/natural gas-driven absorption chiller (SNGDAC), solar vapor compression–absorption integrated refrigeration system with parallel configuration (SVCAIRSPC), and solar absorption-subcooled compression hybrid cooling system (SASCHCS), and building cooling based on the exergoeconomics. Three types of building cooling are considered: Type 1 is the single-story building, type 2 includes the two-story and three-story buildings, and type 3 is the multi-story buildings. Besides this, two Chinese cities, Guangzhou and Turpan, are taken into account as well. The product cost flow rate is employed as the primary decision variable. The result exhibits that SNGDAC is considered as a suitable solution for type 1 buildings in Turpan, owing to its negligible natural gas consumption and lowest product cost flow rate. SVCAIRSPC is more applicable for type 2 buildings in Turpan because of its higher actual cooling capacity of absorption subsystem and lower fuel and product cost flow rate. Additionally, SASCHCS shows the most extensive cost-effectiveness, namely, its exergy destruction and product cost flow rate are both the lowest when used in all types of buildings in Guangzhou or type 3 buildings in Turpan. This paper is helpful to promote the application of solar cooling.

ACS Style

Yue Jing; Zeyu Li; Liming Liu; Shengzi Lu. Exergoeconomic Assessment of Solar Absorption and Absorption–Compression Hybrid Refrigeration in Building Cooling. Entropy 2018, 20, 130 .

AMA Style

Yue Jing, Zeyu Li, Liming Liu, Shengzi Lu. Exergoeconomic Assessment of Solar Absorption and Absorption–Compression Hybrid Refrigeration in Building Cooling. Entropy. 2018; 20 (2):130.

Chicago/Turabian Style

Yue Jing; Zeyu Li; Liming Liu; Shengzi Lu. 2018. "Exergoeconomic Assessment of Solar Absorption and Absorption–Compression Hybrid Refrigeration in Building Cooling." Entropy 20, no. 2: 130.