Issue |
E3S Web Conf.
Volume 459, 2023
XXXIX Siberian Thermophysical Seminar (STS-39)
|
|
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Article Number | 07003 | |
Number of page(s) | 4 | |
Section | Thermophysical Problems of Energetics, Energy Efficiency and Energy Saving | |
DOI | https://doi.org/10.1051/e3sconf/202345907003 | |
Published online | 04 December 2023 |
Improving the performance of the vapor compression cycle using an internal heat exchanger
KNRTU–KAI, Department of Heat Engineering and Power Engineering, 420111, Kazan, Russia
* Corresponding author: erandreym@gmail.com
The main additional consumer of electrical energy in an electric bus is the climate system, which can consume up to 30% of electrical energy. This problem is especially relevant in Russia at low ambient temperatures. The optimal solution is to switch the vapor compression unit to heat pump mode. However, at low temperatures, its efficiency decreases and performance is insufficient. One way to improve efficiency is to use an internal heat exchanger. In this paper, we studied the effect of an internal heat exchanger on the performance of a vapor compression cycle using R290, R410a and R507a refrigerants. The influence of geometry on the performance of the internal heat exchanger is determined. The use of an internal heat exchanger makes it possible to increase coefficient of performance by 10-13%.
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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