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Indexed by:期刊论文

Date of Publication:2014-07-01

Journal:APPLIED THERMAL ENGINEERING

Included Journals:SCIE、EI

Volume:68

Issue:1-2

Page Number:69-75

ISSN No.:1359-4311

Key Words:Gas-liquid separated system; Solar collector; Dynamic simulation; R245fa

Abstract:A gas-liquid separated solar collector system was developed. The operating temperatures are in the range between 100 and 150 degrees C. The boiling collector can be used for process heat supply in the industry and for solar cooling applications as well. This gas-liquid separated solar collector system can use flat-plate solar collector and heat pipe solar collector to generate mid-temperature steam. This system can reduce the usage of the heat pipe solar collector and heat the working medium to the saturated liquid by the flat-plate solar collector, which can reduce the cost of the system. R245fa, also known as 1,1,1,3,3-pentafluoropropane, was used as the high temperature working medium in this system. The simulation results show that this system can work normally. When the mass flow of working fluid was reduced by half of general condition, the collection time was cut by 25%. In contrast, when the mass flow of working fluid was kept the same and the collector area was doubled, the operation time was cut by 35%. (C) 2014 Elsevier Ltd. All rights reserved.