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High-efficiency cooling solution for exhaust air heat pump: Modeling and experimental validation.
- Source :
-
Energy . Sep2022:Part B, Vol. 254, pN.PAG-N.PAG. 1p. - Publication Year :
- 2022
-
Abstract
- The cooling performance of exhaust air heat pumps is limited by the high condensing temperatures owing to insufficient exhaust air volume. In this study, a high-efficiency solution for an exhaust air heat pump was developed and numerically studied. In this novel system, the exhaust air is stepped energy recovered by an indirect evaporative cooler and a heat pump with an evaporative condenser. It is considered that the combination of these two heat transfer components can provide a system with a significantly high cooling efficiency. To explore the application potential of this system further, a detailed mathematical model was established. Meanwhile, a prototype based on this design was developed, and its performance in four operating modes was tested for model validation. When the test results are compared with those of a conventional system of the same size, they show that the cooling capacity and energy efficiency ratio of the novel system increased by 53% and 135%, respectively. Subsequently, to clarify the principles underlying the design of this system, parameter sensitivity analysis and system matching optimization were conducted numerically. • IEC and ECHP is combined into a novel ventilation treatment method. • The improvements of the novel system in cooling capacity and EER are 53% and 135%. • Key design parameters of the novel IEC–ECHP was investigated. • The novel system is especially recommended for hot and humid areas. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03605442
- Volume :
- 254
- Database :
- Academic Search Index
- Journal :
- Energy
- Publication Type :
- Academic Journal
- Accession number :
- 157562639
- Full Text :
- https://doi.org/10.1016/j.energy.2022.124396