Abstract
The absorption heat pump (AHP) heating system is an efficient alternative to the conventional fuel-based heating systems, with energy saving rate reaching 20–50%. However, the coefficient of performance (COP) and heating capacity of normal AHP decreased obviously as the available driving source temperature dropped. Compression-assisted AHP (CAHP) could operate efficiently under lower driving sources, and an experimental prototype was constructed for performance investigation. At an evaporator inlet of −10°C, as the generator inlet decreases from 130°C to 115°C, the COP changes from 1.442 to 1.271, while the heating capacity drops from 68.21kW to 31.28kW. At an increased evaporator inlet of −5°C, as the generator inlet decreases from 130°C to 110°C, the COP changes from 1.511 to 1.103, while the heating capacity drops from 78.72kW to 21.71kW. Comparisons between CAHP and normal AHP indicated that CAHP can extend the lower limit of generator inlet temperature from 125–130°C to 110–115°C. Besides, CAHP can enhance the heating capacity by 96.4% even when AHP can operate normally at a generator inlet of 130°C. Moreover, performance improvement contributed by CAHP is greater under lower-temperature driving sources.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.