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Performance Assessment of Tank Fluid Purging and Night Cooling as Overheating Prevention Techniques for Photovoltaic-Thermal (PV-T) Solar Water Heating Systems
- Source :
- IFIP Advances in Information and Communication Technology, 8th Doctoral Conference on Computing, Electrical and Industrial Systems (DoCEIS), 8th Doctoral Conference on Computing, Electrical and Industrial Systems (DoCEIS), May 2017, Costa de Caparica, Portugal. pp.337-347, ⟨10.1007/978-3-319-56077-9_33⟩, IFIP Advances in Information and Communication Technology ISBN: 9783319560762, DoCEIS
- Publication Year :
- 2017
- Publisher :
- HAL CCSD, 2017.
-
Abstract
- Part 10: Solar Energy; International audience; Tank fluid purging and night cooling are two overheating prevention techniques with potential to prevent photovoltaic-thermal collectors from experiencing temperatures capable of undermining their longevity and commercial appeal. Both techniques are readily available, inexpensive but inherently wasteful to use. Dynamic numerical simulations were conducted to determine the primary energy efficiency and the level of protection afforded by these techniques in active residential grid-connected solar domestic hot water systems. Also evaluated was the use of occupancy rate information, possible via so-called “smart systems”, to complement the techniques. The results revealed better performances for systems using stagnation control schemes relative to those not using them. Also, night cooling was shown to be unable to prevent overheating reliably while tank fluid purging proved to be more apt but resulted in substantial waste of water annually, which was slightly reduced by combining it with night cooling, which in turn proved to be the most energy efficient solution.
- Subjects :
- Smart system
Engineering
Primary energy
Waste management
business.industry
020209 energy
Night
Photovoltaic system
02 engineering and technology
7. Clean energy
13. Climate action
Thermal
Stagnation
0202 electrical engineering, electronic engineering, information engineering
Solar water heating
[INFO]Computer Science [cs]
Occupancy rate
Process engineering
business
Cooling
Photovoltaic
Purging
Overheating (electricity)
Efficient energy use
Subjects
Details
- Language :
- English
- ISBN :
- 978-3-319-56076-2
- ISBNs :
- 9783319560762
- Database :
- OpenAIRE
- Journal :
- IFIP Advances in Information and Communication Technology, 8th Doctoral Conference on Computing, Electrical and Industrial Systems (DoCEIS), 8th Doctoral Conference on Computing, Electrical and Industrial Systems (DoCEIS), May 2017, Costa de Caparica, Portugal. pp.337-347, ⟨10.1007/978-3-319-56077-9_33⟩, IFIP Advances in Information and Communication Technology ISBN: 9783319560762, DoCEIS
- Accession number :
- edsair.doi.dedup.....bd3d4454c4b14cfe9aebb7d612617217