Air conditioning system using recuperated heat - has two heat pumps extracting heat from air and water supplies

摘要

The air conditioning system includes a recirculation line with cooling unit, a heating unit, a fan and an electrical unit. This then joins the fresh air line. A heat pump has an evaporator connected with the cooling unit and a condenser connected with the heating unit. Excess heat passes through valves to lines which pass it to the water tank. This tank is also heated by a heat exchanger which receives heat from a used water tank. This heat exchanger also receives heat from a second heat pump with an evaporator connected to a heat exchanger fed in series with the previous heat exchanger. This second heat pump has its condenser connected to a water tank containing an electric heating element.