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What are Liquid Receivers?

An accessory commonly used on many refrigeration systems is the liquid receiver. It is a storage vessel designed to hold excess refrigerant that is not in circulation. Refrigeration systems exposed to varying heat loads, or systems utilizing a condenser flooding valve to maintain a minimum head pressure during low ambient temperatures, will need a receiver to store excess refrigerant.

By having a store of liquid refrigerant, a system can respond to varying heat loads by varying the flow of refrigerant. In other words, the cooling capacity of the fridge can be varied as required. You put all your groceries in the fridge and it responds with an increased flow of refrigerant to cool your groceries faster. Once chilled, the flow of refrigerant is then reduced in line with the reduced heat load. Note, the liquid receiver alone cannot provide this functionality. A thermostatic expansion valve is used in combination with the liquid receiver. In combination with valve gear, it is possible to ‘pump down’ a refrigeration system such that all the refrigerant can be stored in the liquid receiver. This is extremely desirable to allow a system to be serviced or repaired with ease.

Considering Liquid Receiver Capacity

A receiver has a service valve installed at its outlet, that is referred to as the king valve. A receiver will sometimes also have a service valve at its inlet. The king valve is very useful for service technicians as it allows them to read the system’s pressure at the receiver and is the valve used to trap the system’s refrigerant charge in the condenser and receiver during repairs. Lecol Kenya provides a variety of liquid receivers that are of different capacities. Our team of dedicated technicians will install the liquid receiver for you without having to worry about it.

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