Refrigeration unit and external thermal loads

The manufacturers of hydraulic pumps and fans have long understood the interest of electronic speed variation (ESV). The importance of electronic speed control is becoming increasingly important in refrigeration and air conditioning engineering and compressor manufacturers are offering INVERTER technology in particular. Without a special control system a refrigeration plant is not very interesting from an energy point of view. Although variable speed compression is a very promising solution there are a number of obstacles such as interference with the electrical network noise pollution and lubrication of the refrigeration compressor.