초록 ▼

Heat is recovered by combining a heat transfer system including heat exchangers interconnected in a circulatory system, with a heat pump system. The heat pump system is preferably operated in accordance with the Lorenz-Principle. It is not necessary to divide the heat carrier circuit of the heat pum

Heat is recovered by combining a heat transfer system including heat exchangers interconnected in a circulatory system, with a heat pump system. The heat pump system is preferably operated in accordance with the Lorenz-Principle. It is not necessary to divide the heat carrier circuit of the heat pump into two or three separate circulatory circuits. The heat carrier circuit of the heat pump can thus continue to operate unchanged even if the heat pump is switched off. For this purpose the warm heat carrier coming from a discharge fluid cooler, is heated further in a condenser of the heat pump and the cold heat carrier coming from a preheater or cooler group, is cooled further in an evaporator of the heat pump.

대표청구항 ▼

A method for recovering heat by means of a heat carrier circulatory system from a fluid passing through different temperature stages, wherein the entrance temperatures of a heat carrier into a preheater and into a cooling device in said circulatory system are changed by means of a heat pumping proce

A method for recovering heat by means of a heat carrier circulatory system from a fluid passing through different temperature stages, wherein the entrance temperatures of a heat carrier into a preheater and into a cooling device in said circulatory system are changed by means of a heat pumping process, comprising the following steps: (a) passing the heat carrier through a discharge air cooling device (5) for heating the heat carrier; (b) further passing said heat carrier from said discharge air cooling device (5) through a condenser (10) of a heat pump (13) for further heating said heat carrier, (c) passing said further heated heat carrier through a preheater (1) for cooling the heat carrier; and (d) further passing the cooled heat carrier from the preheater (1) through a vaporizer (12) of said heat pump for further cooling said heat carrier before returning the heat carrier to said discharge air cooling device (5), whereby the heat carrier is heated twice and cooled twice in a closed circulatory system.