Abstract
The vapor injection technique has been used in the heat pump system to improve heating performance and reliability. Especially, it has mostly been applied to extremely cold regions with high compression ratios. In this study, vapor injection was employed in a two-stage heat pump system. A flash tank and an inverter-driven single rotary compressor were also equipped in the heat pump system. The effect of vapor injection was investigated between a compressor frequency of 15∼90% and an ambient temperature of -10∼12°C. In addition, the coefficient of performance (COP) was evaluated for each part-load condition based on SCOP(Seasonal Coefficient of Performance). As a result, the heating capacity and COP of the injection cycle was 6∼13% and -1.4∼7% higher than those of the non-injection cycle under each part-load condition.
| Original language | English |
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| Publication status | Published - 2016 |
| Event | 8th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2016 - Taipei, Taiwan, Province of China Duration: 2016 May 15 → 2016 May 17 |
Other
| Other | 8th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2016 |
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| Country | Taiwan, Province of China |
| City | Taipei |
| Period | 16/5/15 → 16/5/17 |
ASJC Scopus subject areas
- Control and Systems Engineering
- Mechanical Engineering
- Condensed Matter Physics
- Electrical and Electronic Engineering