Thermodynamic Analysis of Industrial Cooling Systems with the Usage of Different Types of Evaporators: Experimental Study

Erten S., KOŞAN M., İşgen F., Demirci E., AKTAŞ M.

GAZI UNIVERSITY JOURNAL OF SCIENCE, vol.34, pp.1145-1161, 2021 (ESCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 34
  • Publication Date: 2021
  • Doi Number: 10.35378/gujs.788864
  • Journal Indexes: Emerging Sources Citation Index (ESCI), Scopus, Academic Search Premier, Aerospace Database, Aquatic Science & Fisheries Abstracts (ASFA), Communication Abstracts, Compendex, Metadex, Civil Engineering Abstracts, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.1145-1161
  • Keywords: Cooling, Evaporator, Energy efficiency, Hydrophilic coating, BOILING HEAT-TRANSFER, HORIZONTAL SMOOTH, PERFORMANCE, TUBE, CONDENSATION
  • Gazi University Affiliated: Yes


Energy efficiency and the amount of refrigerant in heat exchangers used in cooling systems has recently been an important research subject. In this study, in order to compare and analyze different types of evaporators, industrial refrigerators were designed and in this context, test setups in accordance with TS EN ISO 23953-2 standard were produced. R290 (propane) was used as the refrigerant in the designed system. During the experiment, temperature-pressure measurements were taken at a certain point in the cooling system equipment of the products, which were cooled every minute, and test data were recorded. As a result of the data obtained from the experimental results, while the temperature difference of the air entering and leaving the evaporators was 6.797 degrees C in the first system using 1/2" tube diameter evaporator, it was calculated as 7.052 degrees C in the corrugated and hydrophilic coated second system using 3/8" tube diameter. In the experimental setups, the energy consumed in the first and second systems and the masses of R-290 refrigerant were measured as 24.64 kWh, 23.39 kWh and 700 grams, 430 grams, respectively. Consequently, it was calculated that the second system was 5.073% and 38.57% more efficient in terms of energy efficiency and the refrigerant mass used. Coefficient of performance values for the first and second systems were found as 2.807 and 3.013, respectively.