POOLWORLD 21 air-source commercial heat pumps were successfully applied in Xinsi Middle School in Zhang County, Gansu Province. A total of 21 ultra-low temperature cooling and heating units were installed in this project, mainly for the school's comprehensive office building, teaching building, and dormitory for teachers and students to heat in winter. Considering the particularity of school heating, the coldest month of the heating season (January-February), school holidays, the air source heat pump unit is in the state of thermal insulation operation, maximizing energy saving, the host configuration load can also be reduced accordingly, and the initial investment cost of the project can be reduced .
