Performance evaluation on regeneration of high-salt solutions used in air conditioning systems by electrodialysis

2019 ◽  
Vol 582 ◽  
pp. 224-235 ◽  
Author(s):  
Bo Sun ◽  
Muxing Zhang ◽  
Shifang Huang ◽  
Wei Su ◽  
Junming Zhou ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Air Conditioning ◽  
High Salt ◽  
Salt Solutions ◽  
Air Conditioning Systems

scholarly journals Energy Performance Evaluation of Hybrid VRF Systems Based on Japanese Government-Designated Method

2019 ◽  
Vol 111 ◽  
pp. 04029
Author(s):  
Tokimi Kawase ◽  
Atsushi Hashimoto ◽  
Ken Yasuda ◽  
Tatsuo Nobe
Keyword(s):  
Performance Evaluation ◽  
Air Conditioning ◽  
Evaluation Method ◽  
Energy Performance ◽  
Energy Price ◽  
Air Conditioning System ◽  
Gas Engine ◽  
Energy Evaluation ◽  
Japanese Law ◽  
Air Conditioning Systems

Variable Refrigerant Flow Rate (VRF) System is used as air-conditioning systems in small and medium-sized buildings in Japan. Traditionally, the two most common types of VRF systems are electric motor driven VRF Systems (EHP) and gas engine driven VRF Systems (GHP). However, in recent years’ society is increasingly demanding energy saving and the best energy mix. This requires an air-conditioning system that has energy flexibly depending on the application and situation. As a result, a hybrid airconditioning system (called Hybrid VRF System) that satisfies theses need has been developed. The developed system can operate according to energy price and usage situations by connecting GHP and EHP with one refrigerant cycle. In recent years, a Hybrid VRF Systems have been used for small to mediumsized buildings. In this paper, the author evaluated the performance of an integrated Hybrid VRF System based on the energy evaluation method prescribed by Japanese law.

scholarly journals Performance Evaluation of an Air-Conditioning Compressor Part I: Measurement and Design Modeling

1999 ◽  
Vol 5 (4) ◽  
pp. 231-240 ◽  
Author(s):  
Thomas W. Bein ◽  
Yu-Tai Lee
Keyword(s):  
Performance Evaluation ◽  
Air Conditioning ◽  
High Performance ◽  
Design Method ◽  
Measurement Techniques ◽  
Design Problems ◽  
Flow Parameters ◽  
Performance Curves ◽  
The Us ◽  
Air Conditioning Systems

In order to comply with legislation to eliminate the use of refrigerants that damage the ozone layer, it is necessary to redesign centrifugal compressors, used by the US Navy for shipboard air-conditioning systems, to use an environmentally acceptable refrigerant. This paper describes an evaluation of a 125-ton compressor designed to use HCFC-124 as the refrigerant. The objectives are not only conducting the performance evaluation, but also pinpointing the design problems for achieving a high-performance compressor. The design method used to design the 125-ton compressor is first reviewed and some related performance curves are predicted based on a quasi-3D method. In addition to an overall performance measurement, a series of instruments were installed on the compressor to identify where the measured performance differs from the predicted performance. The measurement techniques for providing the diagnostic flow parameters are also described briefly. Part II of this paper provides predictions of flow details in the areas of the compressor where there were differences between the measured and predicted performance.

scholarly journals Analytical Performance Evaluation of Hybrid Desiccant Air Conditioning Systems (Dept.M)

2020 ◽  
Vol 33 (4) ◽  
pp. 25-43
Author(s):  
A. El-Zahaby ◽  
A. Kabeel ◽  
A. Khalil ◽  
M. Bassuoni ◽  
M. Fouad
Keyword(s):  
Performance Evaluation ◽  
Air Conditioning ◽  
Analytical Performance ◽  
Air Conditioning Systems
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