Non-condensable gas
The units with R11 and R123 as refrigerants are negative pressure units, and the compressor inlet is in a vacuum state. When the unit is in operation, maintenance or shutdown, it is inevitable that water, air or non-condensable gas penetrate into the unit. If it is not eliminated in time, it will cause a sharp rise in the top pressure of the condenser, resulting in a decline in cooling capacity and an increase in power consumption.
Cooling water and cold water
General cooling tower water system is open circulation, water and the atmosphere constantly contact to carry out heat and mass transfer, circulating water CO2 loss,CaCO3 crystal precipitation form precipitation, at the same time, the dust in the atmosphere mixed with water to form sludge, so that the heat transfer tube wall of the condenser scale, resulting in the decline of the heat transfer capacity of the condenser, the unit power consumption increased. Relatively speaking, the cold water system is in a closed circulation state, without direct contact with the outside world, but it will also form scale on the wall of the evaporation pipe.
