Abstract

A system for controlling a sorption heat pump. Fuel is fed to a burner via a feed line and a fuel valve. The burner heats a generator containing a heat transfer fluid such as a mixture of water and ammonia and generates pressure inside the generator. The vapors produced by the heating are condensed in a condenser. The condensed heat transfer fluid vapors are throttled and passed into an evaporator. The output fluid from the evaporator is returned via an absorber to the generator. Heat is exchanged between the fluid and a circulating medium for a thermal use provision in the condenser and in the absorber. An intensive thermodynamic parameter such as pressure or temperature of the fluid in the pressurized section of the sorption heat pump is controlled depending on the heat requirements of the thermal use provision and/or the thermal input from the environment into the evaporator. The generator and condenser can be constructed as a joint unit preferably with an intermediate rectifying column. The depleted solution coming from the bottom of the generator and the evaporated refrigerant can be combined in the absorber to a solution rich in refrigerant. The rich solution can be fed back to the rectifying column and entered into the column at a level, where the composition of the rich solution corresponds to the composition of the fluid inside the column.