Energy conservation, economic and environmental benefits of condensation heat recovery system in a hospital building

Studies the load characteristics, the system scheme configuration and the methods of condensation heat recovery system of air conditioning and domestic hot water in a hospital building, dynamically simulates and calculates the energy consumption of conventional system, part-load condensation heat recovery system and full-load condensation heat recovery system using TRNSYS software, and compares and analyses the aspects of economic, energy conservation and environmental benefits respectively. The results show that, comparing with conventional system, the primary energy conservation rate of part-load condensation heat recovery and full-load condensation heat recovery systems is 5.6% and 13.2% respectively, and the running expense saved in each cooling period reaches up to 129 900 and 299 000 Yuan respectively, static investment payback period is 3.81 years and one year respectively, and the carbon emission reduction rate is up to 5.7% and 13.2% in each cooling period.