M.A.N. heat pumps in industry and communities, and their efficiency

Heat pumps for refrigeration and heating are described. A gas motor heat pump is used. Large quantities of heat from the cooling water are available for the fabrication of capacitors. Buildings and industry halls are heated with the heat pump with an asynchronous motor/generator. This tandem system allows several combinations for energy supply. The energy concept consists of five, microprocessor controlled, functional units which can be used independently. Installation costs are recouped in 3 yr. The heating system of a school where a gas motor heat pump is combined with a natural gas fired boiler is also described. Division into a high and a low temperature system guarantees efficient operation. Energy saving of 58% compared to a boiler system is obtained. In the heating system of a hospital where a gas motor heat pump is combined with the existing boiler system, energy saving of 50% compared to the previous system is obtained.