EXERGY ANALYSIS OF A VACUUM TUBE SOLAR COLLECTOR SYSTEM HAVING INDIRECT WORKING PRINCIPLE

Yildizhan H., Sivrioglu M.

THERMAL SCIENCE, vol.21, no.6, pp.2813-2825, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 21 Issue: 6
  • Publication Date: 2017
  • Doi Number: 10.2298/tsci150905009y
  • Journal Name: THERMAL SCIENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2813-2825
  • Keywords: exergy analysis, 40% antifreeze-water mixture, indirect working principle, vacuum tube solar collector, GLASS EVACUATED TUBE, COAXIAL FLUID CONDUIT, PERFORMANCE ANALYSIS, THERMAL PERFORMANCE, WATER-HEATER, U-TUBE, FLAT, SIMULATION, ENERGY, RADIATION
  • Gazi University Affiliated: Yes

Abstract

In this study, the energy and exergy analysis of a hot water preparation system, which is a boiler assisted vacuum tube solar collector, has been conducted. The obtained data were compared with reported results in the literature related to direct operating principle system. Average energy and exergy efficiencies of the experimental system were founded 12% and 0.3%, respectively. The average energy and exergy efficiencies of the vacuum tube solar collectors were founded 13.6% and 1.3%. Energy and exergy efficiencies of the vacuum tube solar collectors, which have indirect operating principle, are lower than direct system working with solar collectors. Maximum exergy loss has occurred in the vacuum tube solar collectors and followed it boiler and pump, respectively.