| 摘要 |
In heat pumps, it is customary to make the flow cross-section of the expansion valve (3) adjustable and to increase it, in the case of rising evaporation temperatures, by means of a temperature sensor (5) behind the evaporator (4). As a result, a greater coolant throughput takes place, which leads to greater evaporator capacities. In order optimally to use the evaporator surfaces, the temperature sensor (5) is exposed to a higher temperature by means of an external heating system (6). Even at relatively low evaporation temperatures, it therefore brings about an increase in the flow cross-section. The external heating system (6) can in this case be regulated by a temperature sensor (7) which measures the evaporation temperature directly. <IMAGE> |
