During the fermentation and drying of Fu Brick Tea

the stability of temperature and humidity in the oven and the low energy consumption of the energy system are important factors for ensuring the quality and cost of the tea. In this study

the Transient System Simulation Tool (TRNSYS) and experimental research were combined to studythe air-source heat pump system used in a Fu Brick Tea factory in Xianyang. By studying the changes in temperature and humidity in the typical monthly drying room in each season

the operating state of the air-source heat pump system during the whole year was assessed to determine whether it met the technological requirements. On this basis

the simulation results of the energy consumption of the system in the representative month and the gas boiler system used in the early stage of the production plant were compared

and the energy-saving and environmental protection characteristics of the air-source heat pump system were studied. The results showed that in January

April

and October

the average standard coal consumption of the heat pump system was 44.42% of the boiler system

and the average emissions of CO2

SO2

and NOx were 34.13%

44.1%

and 40.6% of the boiler system

respectively. In the fermentation and drying process of the tea

the air-source heat pump system had better energy saving and environmental protection characteristics than the gas boiler system.