Performance Analysis on Developed EVI Air Source Heat Pump with Seasonal Heat Demand

摘要

An optimised air source heat pumps (ASHP) using an economised vapour injection (EVI)compressor is integrated in a residential house for field trial and aimed to replace fossil-fuel boilerheating system. Due to the complex of operation strategy and ambient conditions, a goodunderstanding of the EVI-ASHP performance under different operation conditions is essential. Thisstudy investigates and analyses the heating capacity and performance of the developed EVI ASHPin field trials for space heating and hot water supply for whole year with variable operationstrategies and issues in details. The results of this study provide a solid basis for system operationimprovement and scaling up applications of this kind of heat pump in the future.