Energy modeling and experimental validation of heat pump operating modes in exhaust air heat recovery. Part 2. Energy, economic and environmental indicators
Annotation
Comparative characteristics of two options for using a heat pump integrated into the ventilation system are considered: the one with heat recovery from exhaust air and another one with the use of outside air as a low-potential source. Energy modeling of the operating modes of the heat pump installation for the heating period in the climatic conditions of St. Petersburg was carried out after verification of the calculation method based on the results of a physical experiment. The simulation result revealed a significant potential for using the proposed system in three aspects: energy, economic, and environmental. The energy efficiency indicators of this system for the heating period for the conditions of St. Petersburg with an average heating capacity of about 22 kW are: COP is increased by 27.57%, the saved electricity brings a benefit of $ 2212.72, CO2 emissions are reduced by 15749.32 kg, the payback of the system is 2-2.2 years.
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