Effects of evaporator and condenser temperatures on the performance of a chiller system with a variable speed compressor
Joint Authors
al-Hassani, Ahmed H.
al-Badri, Ala R.
Source
Engineering and Technology Journal
Issue
Vol. 39, Issue 1A (31 Jan. 2021), pp.45-55, 11 p.
Publisher
Publication Date
2021-01-31
Country of Publication
Iraq
No. of Pages
11
Main Subjects
Topics
Abstract EN
The operation and performance of heat-pump systems are affected by indoor and outdoor operating conditions.
Power consumption and system efficiency are related to evaporator and condenser working pressures.
Intelligent controllers such as a proportional integral (PI) controller improve the performance of variable speed refrigeration systems (VSRs) with electronic expansion valve (EEV).
Evaporator and condenser pressures affect the system power consumption and efficiency.
In this study, the influence of evaporator and condenser temperatures on the performance of a variable speed refrigeration system with an EEV was experimentally investigated at constant cooling load.
The experimental system comprises of a rotary compressor, shell-and-coil condenser, EEV, and shell-and-coil evaporator for one-ton cooling capacity with refrigerant R410.
Compressor speed and EEV opening are controlled by a PI controller with two control loops and the refrigerant superheat (DS) is maintained at 7°C.
The results show that at constant cooling capacity, the refrigerant flow rate rises with the increase in the compressor speed.
The coefficient of performance (COP) is improved with low compressor speed.
The System COP is increased by 3.3% with increasing evaporator inlet water temperature for 2°C due to the reduction in the compressor speed and compression ratio.
High condenser inlet water temperature promotes the refrigerant subcooling.
American Psychological Association (APA)
al-Hassani, Ahmed H.& al-Badri, Ala R.. 2021. Effects of evaporator and condenser temperatures on the performance of a chiller system with a variable speed compressor. Engineering and Technology Journal،Vol. 39, no. 1A, pp.45-55.
https://search.emarefa.net/detail/BIM-1281618
Modern Language Association (MLA)
al-Hassani, Ahmed H.& al-Badri, Ala R.. Effects of evaporator and condenser temperatures on the performance of a chiller system with a variable speed compressor. Engineering and Technology Journal Vol. 39, no. 1A (2021), pp.45-55.
https://search.emarefa.net/detail/BIM-1281618
American Medical Association (AMA)
al-Hassani, Ahmed H.& al-Badri, Ala R.. Effects of evaporator and condenser temperatures on the performance of a chiller system with a variable speed compressor. Engineering and Technology Journal. 2021. Vol. 39, no. 1A, pp.45-55.
https://search.emarefa.net/detail/BIM-1281618
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 54-55
Record ID
BIM-1281618