Modeling and development of microchannel condenser thermodynamic analysis code used in air conditioning systems

Hashemabadi, Mahdi; Pirkandi, Jamasb

doi:10.22034/jrenew.2024.193870

Modeling and development of microchannel condenser thermodynamic analysis code used in air conditioning systems

Document Type : Original Article

Authors

Mahdi Hashemabadi ¹

Jamasb Pirkandi ²

¹ Faculty of Aerospace, Malek Ashtar University of Technology, Tehran, Iran

² Faculty of Aerospace, Malek-Ashtar University of Technology, Tehran, Iran

https://doi.org/10.22034/jrenew.2024.193870

Abstract

Heat exchangers play a very important role in various equipment. The new approach in this field is the use of microchannel heat exchangers, which, by increasing the heat transfer rate per unit of surface area or weight, have become the main candidates for use in different equipment compared to traditional heat exchangers. In refrigeration cycles, these heat exchangers are usually used in air condensers. In this research, an analytical code has been developed for the simulation and design of the microchannel condensers. In this simulation, instead of using the formulas for determining the single-channel heat transfer coefficient such as Dobson and Chato relations, formulas related to multi-channel tubes have been used, which are extracted from reliable and new sources and have high accuracy. This code is written in engineering equation solving software due to having a powerful database for different refrigerants. For the validation of the developed code, four condensers of different dimensions and with different refrigerants were selected to compare the data of the developed code with valid experimental data available for these four condensers as well as the data of past analytical codes. The results show that the accuracy of the developed code is much higher than the previous works and it estimates the heat capacity of the condenser and the temperature of the air and refrigerant side with an error of less than 10%. The developed code provides significant cost savings in the design and optimization process of heat exchangers.

Keywords

Microchannel heat exchanger

Thermodynamic Simulation

Condenser

Refrigerant

Subjects

Renewable Energy

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