Comparative analysis of the energy performance of an air handling unit with two-stage heat recovery operating in the different climatic zones of Bulgaria

Abstract A comparative analysis was carried out to establish the energy performance of an air handling unit (AHU) for two-stage heat recovery exhaust air. The seasonal coefficient (SCOP) calculated when AHU is operating in heating mode, as well COP entire on annual basis, taking into account specific features different climatic zones Republic Bulgaria. results have been compared with BIN-temperature data average climate provided EN 14825 (Table 37) order find how far this standard will give reliable Bulgarian climate, both terms consumption and SCOP.