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Open AccessArticle

Performance Analysis of a Solar DHW System with Adsorption Module Operating in Different World Locations

1
ADAI-LAETA, Department of Mechanical Engineering, University of Coimbra, P-3030 788 Coimbra, Portugal
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TEMA (Center for Mechanical Technology and Automation), Department of Mechanical Engineering, University of Aveiro, P-3810 193 Aveiro, Portugal
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(24), 5480; https://doi.org/10.3390/app9245480
Received: 18 November 2019 / Revised: 10 December 2019 / Accepted: 11 December 2019 / Published: 13 December 2019
(This article belongs to the Special Issue The State of the Art of Thermo-Chemical Heat Storage)
A numerical study was conducted on the performance of a solar domestic hot water storage system with an adsorption module operating in seven different world locations. The base system was optimized for Portuguese conditions and, without changing the system itself and the water consumption profile, its performance was investigated by altering local installation and operating conditions and solar collector inclination angles. The overall dynamical model of the system was used for numerical simulations. The improved performance of the system was assessed by the reduction achieved on the annual energy consumption of a backup water heater when compared with a similar conventional energy storage system (without an adsorption module). The results showed that the best performances were obtained in locations where winter and summer are clearly defined, especially locations where winters are colder, and with solar collectors’ inclination angles larger than the local latitude, except for locations with low latitudes, where solar collectors’ inclination angles are not so relevant to the system performance. It was also discussed how the performance results must be carefully analyzed, as for low-latitude locations the absolute savings are in fact smaller even if their relative values are of the same order or even higher than for higher-latitude locations. View Full-Text
Keywords: solar DWH; adsorption; heat storage; energy efficiency; climate conditions; numerical simulation solar DWH; adsorption; heat storage; energy efficiency; climate conditions; numerical simulation
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Fernandes, M.S.; Costa, V.A.F.; Brites, G.J.V.N.; Gaspar, A.R.; Costa, J.J. Performance Analysis of a Solar DHW System with Adsorption Module Operating in Different World Locations. Appl. Sci. 2019, 9, 5480.

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