Vodice The Imperial Park Hotel 26 - 28 March 2025
27 th International Conference on Heating, Cooling and Air-conditioning
doc. dr. sc. Gordan LJEŠIĆ University of Mostar Faculty of Mechanical Engineering, Computing and Electrical Enginering Matice hrvatske bb 88 000 Mostar Bosnia and Herzegovina e-mail: gordan.ljesic@fsre.sum.ba
ABSTRACT
PAPER
MP4
PRESENTATION VIDEO
He received his PhD degree in 2022 from the Faculty of Mechanical Engineering, Computing and Electrical Engi- neering of the University of Mostar (FSRE). Today, he is an assistant professor at the FSRE.
prof. dr. sc. Vladimir SOLDO University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, Croatia
THE INFLUENCE OF INTERNAL HEAT EXCHANGER ON THE EFFICIENCY OF THE REFRIGERATION PROCESS WITH PROPANE AS A REFRIGERANT
n this paper energy performance analysis of re- frigeration process with propane (R290) as a natural refrigerant is presented. The paper deter- mines the influence of internal heat exchanger on the system efficiency. Experimental rig is a compression refrigeration cycle consisting of scroll compressor, electronic expansion valve and helically coiled tube-in-tube condenser and evaporator. The cycle is equipped with auxiliary components, oil separator, receiv- er and internal heat exchanger that can be by-
passed in order to determine individual impact on the system. Experimental rig is also equipped with advanced monitoring and acquisition sys- tem which enables determination of main system parameters, energy flow and system efficiency. Energy efficiency ratio (EER) values are deter- mined at different condensing temperatures 30 °C, 35 °C, 40 °C and 45 °C, and different cooling capacity values in the range of 6 to 11 kW. The measuring results show a negligible impact of the internal heat exchanger on the system efficiency.
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1st Thematic Section - FRAN BOŠNJAKOVIĆ DAY
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