Experimental study on improving the performance of vapor compression cycle by using loop-type heat pipe


Yılmaz M., Erdoğan A. K., Özdemir M.

Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering, cilt.238, sa.2, ss.922-930, 2024 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 238 Sayı: 2
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1177/09544089221148328
  • Dergi Adı: Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Applied Science & Technology Source, Communication Abstracts, INSPEC, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.922-930
  • Anahtar Kelimeler: Vapor compression cycle, looped type thermosiphon, new generation refrigerant 515B, compressor discharge temperature
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

© IMechE 2023.In this study, an experimental study was carried out on a heat pipe, whose evaporator is located between the compressor outlet and the condenser inlet of an industrial cooler on a vapor compression cycle (VCC). It absorbs heat from the new generation refrigerant fluid of 515B and transfers it to the outdoor air. The heat pipe is a looped thermosiphon-type heat pipe. R134a refrigerant is used as a working fluid in the heat pipe. By changing the condenser air inlet temperatures, the contribution of the heat pipe to the cooling cycle has been determined experimentally. While the evaporation pressure of the refrigeration cycle with the heat pipe remains approximately constant, the condensation pressure decreases, and the sub-cool temperature increases. For condenser air inlet temperatures of 30, 40, and 50°C, the COP of the cooler with heat pipe increases by 1.8%, 2.6%, and 2.76%, respectively. As the air temperature at the condenser inlet increases, the ratio of heat pipe power to the cooling capacity of the cycle also increases. In addition, the compressor outlet temperature is reduced by 1.5%–2.8% using of the heat pipe.