System and Method for Detecting a Refrigerant Leak in an HVAC System Using a Saturated Suction Temperature

Abstract: a method operating an hvac system is provided. the method includes receiving a concentration of refrigerant from a sensor. the method includes operating the hvac system in a leak diagnostic mode if a concentration of the refrigerant exceeds a gas concentration threshold. during the leak diagnostic mode the method includes turning on a compressor to compress a refrigerant in a first refrigerant circuit. the method includes receiving a first saturated suction temperature from a sensor. the method includes turning off the compressor for a predetermined duration. the method includes turning on the compressor after the predetermined duration has elapsed. the method includes receiving a second saturated suction temperature of the refrigerant from the sensor. the method includes determining that the first refrigerant circuit includes a refrigerant leak if a difference between the first saturated suction temperature and the second saturated suction temperature exceeds a saturated suction temperature threshold value.

Inventor(s): Sangameshwaran Sadhasivam, Vickey Bhardwaj, Patric Ananda Balan Thobias

CPC Classification: F24F11/36 (AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced ; vertical ducts for carrying away waste gases from buildings ; tops for chimneys or ventilating shafts, terminals for flues ))

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