Control strategy of vapor injection cycle.
Number: pap. n. R8, 2249
Author(s) : XU X., HWANG Y., RADERMACHER R., et al.
Summary
Vapor refrigerant injection cycle with a flash tank has proven to be effective in improving system performance significantly at extremely low and high ambient temperatures. However, the control strategy of operating the system is still unclear. There is no open publication on the comprehensive study of the vapor injection cycle control strategy to date. This paper presents the experimental investigation on the control strategy of the vapor injection system using R410A as its working fluid. A prototype flash tank equipped with a flow visualization window was utilized to monitor and investigate the liquid-vapor separation, which guided the development of the system control strategy. The control of three valves was found to be critical to the reliable system operation: the injection port valve, the upper-stage expansion valve and the lower-stage expansion valve. The system was tested with different vapor refrigerant injection ratios under ASHRAE Standard Rating and Performance test conditions. Severe conditions of -17.8ºC and 46.1ºC were also used to evaluate the system behavior. The system was found to be operating steady with the liquid refrigerant in the flash tank maintaining a level of 40% to 60% of the tank height to ensure the reliable system operation.
Available documents
Format PDF
Pages: 8 p.
Available
Public price
20 €
Member price*
15 €
* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).
Details
- Original title: Control strategy of vapor injection cycle.
- Record ID : 30000595
- Languages: English
- Source: 2010 Purdue Conferences. 13th International Refrigeration and Air-Conditioning Conference at Purdue.
- Publication date: 2010/07/12
Links
See other articles from the proceedings (121)
See the conference proceedings
-
Impact of suction and injection gas superheat d...
- Author(s) : DECHESNE B., LEMORT V., NADRI M., et al.
- Date : 2018/07/09
- Languages : English
- Source: 2018 Purdue Conferences. 17th International Refrigeration and Air-Conditioning Conference at Purdue.
- Formats : PDF
View record
-
Numerical analysis on the effects of refrigeran...
- Author(s) : WANG B., SHI W., LI X.
- Date : 2009/01
- Languages : English
- Source: Applied Thermal Engineering - vol. 29 - n. 1
View record
-
CFD analysis and experiment study of the rotary...
- Author(s) : DENG L., LIANG S., XU J., et al.
- Date : 2016/07/11
- Languages : English
- Source: 2016 Purdue Conferences. 23rd International Compressor Engineering Conference at Purdue.
- Formats : PDF
View record
-
Liquid circulation control in pump-circulation ...
- Author(s) : LASSEN O.
- Date : 1992/05
- Languages : Dutch
- Source: Koude & Luchtbehandeling - vol. 85 - n. 5
View record
-
Nueva generación de sistemas de caudal de refri...
- Author(s) : CASTRO M.
- Date : 2015/07
- Languages : Spanish
- Source: Frío Calor Aire acondicionado - vol. 43 - n. 482
- Formats : PDF
View record