Electronic Expansion Valve of Outdoor Unit ? In Cooling Operation In cooling operation, outdoor electronic expansion valve should basically be fully open. Note: In some…
In the compressor capacity controller of VRV system, the pressure detected (Pe or Pc) by pressure sensor installed in outdoor unit is converted into equivalent…
Subject to change of the number of operation (thermostat-on) units, capacity, air flow rate, suction temperature, of indoor units ? Load on total system changes.…
Subject to change of the number of operation (thermostat-on) units, capacity, air flow rate, suction temperature, humidity change of indoor units ? Load on total…
The refrigeration cycle is composed of repetition of the following process. “Compression ? Condensation ? Expansion ? Evaporation” The refrigerating machine conducts above cycle with…
P-H diagram shows characteristics of various refrigerants with pressure on vertical axis and enthalpy on horizontal axis. Change of state change from gas to liquid…
VRV System Thirty or more indoor units can be connected to single system. There are “cooling / heating selection -standard- type” and “individual operating system…
Pure water is a rare commodity. Water, as we know it, contains many dissolved minerals. When evaporation occurs in a cooling tower, only the water…
Many servicemen experience service calls where the compressor has both a low head pressure and a high suction pressure. Often, the refrigeration equipment is still…
Megohmmeters (meggers) are electrical meters used to check the resistance and condition of the motor windings and the condition of the refrigeration and oil environment…