The vapor-compression cycle has four stages (compression, condensation, expansion, and evaporation) and one ultimate goal: converting refrigerant into a state that makes it useful as a heat transfer ...

When servicing refrigeration or air conditioning systems that incorporate reciprocating or piston-type compressors, worn compressor rings and/or leaky compressor suction or discharge valves can cause ...

MSEV 1 to 50 tons product line & Superheat Sensor/Controller The valves are autonomously controlled by DMQ’s palm sized Universal SuperHeat Controller (USHC). The control algorithm is designed and ...

When we last spoke to the people at Microstaq Inc., maker of the silicon Ventillum microelectromechanical systems (MEMS) expansion valve IC, they were busy addressing the requirements of the HVAC ...

VALLEY COTTAGE, N.Y. – Variable Refrigerant Flow (VRF) Systems is a mature heating, ventilation and air conditioning (HVAC) technology which simultaneously heat and cool area through extracting heat ...

Fieldpiece Instruments has launched new refrigerant analogue gauge sets designed for the demands of today’s HVACR technicians.