| 摘要 |
The invention relates to an electronic regulating system suitable for various refrigerating installations having a high energy-saving capacity, high efficiency and low emissions, and a compact size, said regulating system enabling the operating parameters to be visualised. The coolant flow rate in the plate-type exchanger/evaporator (5) is determined; a temperature difference is determined on the basis of the coolant inlet sensor (7) and the nominal value of the coolant; the required cooling capacity of the compressor (1) is continuously calculated from the flow rate, the temperature difference and the specific heat capacity of the coolant; the rotational speed of the compressor (1) is regulated according to the value of the cooling capacity; the refrigerating capacity of the compressor is calculated from the pressure difference between the high-pressure side and the low-pressure side (evaporation pressure) and the volumetric displacement of the compressor (1); the variation in the cooling capacity value of the compressor (1) creates pressure differences in the plate-type exchanger/evaporator (5); the evaporation temperature is measured and the overheating in the plate-type exchanger/evaporator (5) is determined on the basis thereof by means of the overheating temperature sensor (8); and the pressure differences in the plate-type exchanger/evaporator (5) are regulated via the electronic control valve (4) by means of an overheating regulating device for the plate-type exchanger/evaporator (5). The electronic regulating system is suitable for almost all refrigerating installations. |
