System performance and economic analysis of solar-assisted cooling/heating system

Handle URI:
http://hdl.handle.net/10754/599613
Title:
System performance and economic analysis of solar-assisted cooling/heating system
Authors:
Huang, B.J.; Wu, J.H.; Yen, R.H.; Wang, J.H.; Hsu, H.Y.; Hsia, C.J.; Yen, C.W.; Chang, J.M.
Abstract:
The long-term system simulation and economic analysis of solar-assisted cooling/heating system (SACH-2) was carried out in order to find an economical design. The solar heat driven ejector cooling system (ECS) is used to provide part of the cooling load to reduce the energy consumption of the air conditioner installed as the base-load cooler. A standard SACH-2 system for cooling load 3.5. kW (1. RT) and daily cooling time 10 h is used for case study. The cooling performance is assumed only in summer seasons from May to October. In winter season from November to April, only heat is supplied. Two installation locations (Taipei and Tainan) were examined.It was found from the cooling performance simulation that in order to save 50% energy of the air conditioner, the required solar collector area is 40m2 in Taipei and 31m2 in Tainan, for COPj=0.2. If the solar collector area is designed as 20m2, the solar ejector cooling system will supply about 17-26% cooling load in Taipei in summer season and about 21-27% cooling load in Tainan. Simulation for long-term performance including cooling in summer (May-October) and hot water supply in winter (November-April) was carried out to determine the monthly-average energy savings. The corresponding daily hot water supply (with 40°C temperature rise of water) for 20m2 solar collector area is 616-858L/day in Tainan and 304-533L/day in Taipei.The economic analysis shows that the payback time of SACH-2 decreases with increasing cooling capacity. The payback time is 4.8. years in Tainan and 6.2. years in Taipei when the cooling capacity >10. RT. If the ECS is treated as an additional device used as a protective equipment to avoid overheating of solar collectors and to convert the excess solar heat in summer into cooling to reduce the energy consumption of air conditioner, the payback time is less than 3 years for cooling capacity larger than 3. RT. © 2011 Elsevier Ltd.
Citation:
Huang BJ, Wu JH, Yen RH, Wang JH, Hsu HY, et al. (2011) System performance and economic analysis of solar-assisted cooling/heating system. Solar Energy 85: 2802–2810. Available: http://dx.doi.org/10.1016/j.solener.2011.08.011.
Publisher:
Elsevier BV
Journal:
Solar Energy
KAUST Grant Number:
KUK-C1-014-12
Issue Date:
Nov-2011
DOI:
10.1016/j.solener.2011.08.011
Type:
Article
ISSN:
0038-092X
Sponsors:
This publication is based on work supported by Award No. KUK-C1-014-12, made by King Abdullah University of Science and Technology (KAUST), Saudi Arabia.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorHuang, B.J.en
dc.contributor.authorWu, J.H.en
dc.contributor.authorYen, R.H.en
dc.contributor.authorWang, J.H.en
dc.contributor.authorHsu, H.Y.en
dc.contributor.authorHsia, C.J.en
dc.contributor.authorYen, C.W.en
dc.contributor.authorChang, J.M.en
dc.date.accessioned2016-02-28T06:30:54Zen
dc.date.available2016-02-28T06:30:54Zen
dc.date.issued2011-11en
dc.identifier.citationHuang BJ, Wu JH, Yen RH, Wang JH, Hsu HY, et al. (2011) System performance and economic analysis of solar-assisted cooling/heating system. Solar Energy 85: 2802–2810. Available: http://dx.doi.org/10.1016/j.solener.2011.08.011.en
dc.identifier.issn0038-092Xen
dc.identifier.doi10.1016/j.solener.2011.08.011en
dc.identifier.urihttp://hdl.handle.net/10754/599613en
dc.description.abstractThe long-term system simulation and economic analysis of solar-assisted cooling/heating system (SACH-2) was carried out in order to find an economical design. The solar heat driven ejector cooling system (ECS) is used to provide part of the cooling load to reduce the energy consumption of the air conditioner installed as the base-load cooler. A standard SACH-2 system for cooling load 3.5. kW (1. RT) and daily cooling time 10 h is used for case study. The cooling performance is assumed only in summer seasons from May to October. In winter season from November to April, only heat is supplied. Two installation locations (Taipei and Tainan) were examined.It was found from the cooling performance simulation that in order to save 50% energy of the air conditioner, the required solar collector area is 40m2 in Taipei and 31m2 in Tainan, for COPj=0.2. If the solar collector area is designed as 20m2, the solar ejector cooling system will supply about 17-26% cooling load in Taipei in summer season and about 21-27% cooling load in Tainan. Simulation for long-term performance including cooling in summer (May-October) and hot water supply in winter (November-April) was carried out to determine the monthly-average energy savings. The corresponding daily hot water supply (with 40°C temperature rise of water) for 20m2 solar collector area is 616-858L/day in Tainan and 304-533L/day in Taipei.The economic analysis shows that the payback time of SACH-2 decreases with increasing cooling capacity. The payback time is 4.8. years in Tainan and 6.2. years in Taipei when the cooling capacity >10. RT. If the ECS is treated as an additional device used as a protective equipment to avoid overheating of solar collectors and to convert the excess solar heat in summer into cooling to reduce the energy consumption of air conditioner, the payback time is less than 3 years for cooling capacity larger than 3. RT. © 2011 Elsevier Ltd.en
dc.description.sponsorshipThis publication is based on work supported by Award No. KUK-C1-014-12, made by King Abdullah University of Science and Technology (KAUST), Saudi Arabia.en
dc.publisherElsevier BVen
dc.subjectEconomic analysis of solar coolingen
dc.subjectEjector coolingen
dc.subjectSolar ejector coolingen
dc.titleSystem performance and economic analysis of solar-assisted cooling/heating systemen
dc.typeArticleen
dc.identifier.journalSolar Energyen
dc.contributor.institutionNational Taiwan University, Taipei, Taiwanen
dc.contributor.institutionNational Chin-Yi University of Technology Taiwan, Taichung, Taiwanen
kaust.grant.numberKUK-C1-014-12en
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