Thermal Performance Analysis of an Absorption Cooling System Based on Parabolic Trough Solar Collectors

Wang, Jiangjiang; Yan, Rujing; Wang, Zhuang; Zhang, Xutao; Shi, Guo-Hua

doi:10.3390/en11102679

Cited by 19 publications

(13 citation statements)

References 30 publications

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“…In general, many of the studies and research papers focus on the performances of PTC-powered double-effect absorption system for space cooling. The studies prove that 50% of the cooling load could be covered [37], 69.47% of the solar energy utilization efficiency could be achieved [38] and 65% of the annual operating costs could be reduced [39]. The contribution to CO2 emission reduction of solar-assisted double-effect chillers is also pointed out compared to conventional cooling system [40].…”

Section: Introductionmentioning

confidence: 80%

Mathematical modeling and performance analysis of an integrated solar heating and cooling system driven by parabolic trough collector and double-effect absorption chiller

Zheng

Shi

Wang

et al. 2019

Energy and Buildings

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With the increasing concerns on energy conservation and environmental protection, solar heating and cooling (SHC) system represents an attractive candidate in building sector. In this paper, an integrated SHC system driven by parabolic trough collector (PTC) and double-effect H2O/LiBr absorption chiller was presented. The energy generated by solar collectors was supplied to the absorption chiller during the cooling period, and was directly used for space heating with the integration of plate heat exchanger during the heating period. The mathematical models of the whole system 2 including the collector, the double-effect absorption chiller and the plate heat exchanger were established and were validated by field tests. Based on the proposed models, comparison of the SHC system and the conventional gas-driven absorption heating and cooling system was carried out by case study. The annual performances as well as energetic, economic and environmental assessments of the proposed system were investigated. Results show that, 21.3% of the primary energy consumption and 18.8% of the CO2 emission can be reduced in SHC system. Therefore, the proposed integrated solar heating and cooling system has a promising application prospect in sustainable development in view of its considerable energy saving benefits, potential economic viability and environmental friendly characteristics.

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Section: Introductionmentioning

confidence: 80%

Mathematical modeling and performance analysis of an integrated solar heating and cooling system driven by parabolic trough collector and double-effect absorption chiller

Zheng

Shi

Wang

et al. 2019

Energy and Buildings

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“…The SACS can be driven by hot water with a relatively low temperature that can be provided by the common flat or evacuated tubes solar thermal collectors [6,9]. Concentrating solar collectors are also used in some solar cooling studies [5,13].…”

Section: Of 22mentioning

confidence: 99%

“…Since solar radiation is a major component of the cooling load, there is also a challenge to convert solar radiation into useful forms of energy [4]. Solar radiation directly influences the cooling load of buildings, thus the two are correlated at least to a certain extent [5].…”

Section: Introductionmentioning

confidence: 99%

New Perspective on Performances and Limits of Solar Fresh Air Cooling in Different Climatic Conditions

et al. 2019

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The study carried out by simulation, concerns the thermal behavior of an office building’s solar fresh air cooling system, based on a LiBr-H2O absorption chiller in different climatic conditions. The coefficient of performance (COP) and the solar fraction were considered performance parameters and were analyzed with respect to the operating limits—the risk of crystallization and maintaining at least a minimum degassing zone. A new correlation between the required solar hot temperature and the cooling water temperature was established and then embedded in another new correlation between the COP and the cooling water temperature that was used in simulations during the whole cooling season corresponding to each location. It was found that—the solar hot water should be maintained in the range of (80–100) °C depending on the cooling water temperature, the COP of the solar LiBr-H2O absorption chiller with or without cold storage tank could reach (76.5–82.4)% depending on the location, and the solar fraction could reach (29.5–62.0)% without cold storage tank and could exceed 100% with cold storage tank, and the excess cooling power being available to cover other types of cooling loads—through the building envelope, from lighting, and from occupants, etc.

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“…Since solar radiation is a major component of the cooling load, there is also a challenge to convert the solar radiation into useful forms of energy [4]. Solar radiation directly influences the cooling loads of the building, thus the two are correlated at least to a certain extent [5].…”

Section: Introductionmentioning

confidence: 99%

“…The SACS can be driven by hot water with relatively low temperature that can be provided by common flat or evacuated tubes solar thermal collectors [6,9]. Concentrating solar collectors are also used in some solar cooling studies [5,13].…”

Section: Introductionmentioning

confidence: 99%

New Perspective on Performances and Limits of Solar Fresh Air Cooling in Different Climatic Conditions

Abrudan¹,

Pop²,

Şerban³

et al. 2019

Preprint

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The study carried out by simulation, concerns the thermal behavior of an office building’s solar fresh air cooling system, based on a LiBr-H2O absorption chiller in different climatic conditions. The coefficient of performance (COP) and the solar fraction were considered performance parameters and were analyzed with respect to the operating limits: risk of crystallization and maintaining at least a minimum degassing zone. A new correlation between the required solar hot temperature and the cooling water temperature was established and then embedded in another new correlation between the COP and the cooling water temperature that was used in simulations during the whole cooling season corresponding to each location. It was found that: the solar hot water should be maintained in the range of (80-100) °C depending on the cooling water temperature, the COP of the solar LiBr-H2O absorption chiller with or without cold storage tank can reach (76.5-82.4) % depending on the location, and the solar fraction can reach (29.5-62.0) % without cold storage tank and can exceed 100 % with cold storage tank, the excess cooling power being available to cover other types of cooling loads: through the building envelope, from lighting, from occupants, etc.

show abstract

Thermal Performance Analysis of an Absorption Cooling System Based on Parabolic Trough Solar Collectors

Cited by 19 publications

References 30 publications

Mathematical modeling and performance analysis of an integrated solar heating and cooling system driven by parabolic trough collector and double-effect absorption chiller

Mathematical modeling and performance analysis of an integrated solar heating and cooling system driven by parabolic trough collector and double-effect absorption chiller

New Perspective on Performances and Limits of Solar Fresh Air Cooling in Different Climatic Conditions

New Perspective on Performances and Limits of Solar Fresh Air Cooling in Different Climatic Conditions

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