A METHOD FOR MONITORING A REFRIGERANT CHARGE IN A VAPOUR COMPRESSION SYSTEM

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United States of America Patent

APP PUB NO 20230168012A1
SERIAL NO

17920947

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Abstract

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A method for monitoring a refrigerant charge in a vapour compression system (1) is disclosed, the vapour compression system (1) including a compressor unit (2), a heat rejecting heat exchanger (3), a high pressure expansion device (4), a receiver (5), at least one expansion device (9, 10), and at least one evaporator (11, 12) arranged in a refrigerant path. A change in net mass flow into or out of the receiver (5) and/or a change in net enthalpy flow into or out of the receiver (5) is detected, and a pressure inside the receiver (5) is monitored as a function of time, following the detected change in net mass flow and/or in net enthalpy flow. A time constant being representative for dynamics of the receiver (5) is derived, based on the monitored pressure as a function of time, and information regarding a refrigerant charge in the vapour compression system (1) is derived, based on the derived time constant.

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Patent Owner(s)

Patent OwnerAddress
DANFOSS A/SNORDBORGVEJ 81 DK-6430 NORDBORG NORDBORG

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
ANDREASEN, Glenn Nordborg, DK 2 1
IZADI-ZAMANABADI, Roozbeh Nordborg, DK 13 52
REICHWALD, Peter Nordborg, DK 4 1

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