Abstract
Air-conditioning systems consume large amount of energy and generate considerable amount of condensate when operated in hot and humid climates. This study considers utilizing the generated condensate to pre-cool the air entering evaporators to improve systems performance. Experimental and analytical investigations are carried out by using an air-conditioning system of 4.75 kW (16207 BTU/h) cooling capacity incorporated with an air pre-cooler and a condensate tank that acts as a thermal storage. During the pre-cooling-on period, the air inlet temperature of the evaporator is decreased by 5.7°C (10.3°F) and the compressor power consumption is reduced by 5.1% because of the decrease in discharge pressure. The coefficient of performance increases by 30.7% and second-law efficiency by 24.2%. The air pre-cooling is practical for 4–5 hours daily during the daytime if a 450–1000 kg of condensate cold thermal storage is employed. The deviation is 6.7% between the analytical and experimental results.
| Original language | English |
|---|---|
| Pages (from-to) | 748-760 |
| Number of pages | 13 |
| Journal | Science and Technology for the Built Environment |
| Volume | 23 |
| Issue number | 5 |
| DOIs | |
| State | Published - 4 Jul 2017 |
Bibliographical note
Publisher Copyright:Copyright © 2017 ASHRAE.
ASJC Scopus subject areas
- Environmental Engineering
- Building and Construction
- Fluid Flow and Transfer Processes
Fingerprint
Dive into the research topics of 'Performance enhancement of a vapor compression system by condensate'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver