How to choose a suitable refrigerant recovery machine?

1、Refrigerant recovery for refrigeration equipments with system refrigerant quantity within 100kg

If there is no big requirement on the speed, you can choose a small refrigerant recovery machine, the function is only to recover and charge. Recovery time: If the recovery of 100kg refrigerant system, water-cooled models need about 2-3 hours to complete the recovery, air-cooled models will take longer. The main thing to consider here is the amount of liquid refrigerant inside the system, because the small refrigerant recovery machine recovery of liquid speed is very fast, can reach 100kg / h, while the gas recovery speed is only 15kg / h or so, so the length of time to recover the gas determines the length of the recovery time.

The small recycling machine for maintenance can be used without the oil separator function, only need to add a filter to remove moisture and impurities. Because the function of the oil separator of the small recycling equipment is very limited, Freon and oil in the design of the time to maximize the consideration of the mutual solubility of the two, so want to use a small refrigerant recycling machine to completely separate the oil is unrealistic, and the maintenance of recycled Freon is needed to refill to the original system is not needed to share the oil.

2、Refrigerant recovery for refrigeration equipments with refrigerant quantity within 100k-800kg

In this range can make a small division, 100-200kg, there is no special requirements for the speed of the same can use a small refrigerant recovery machine, but more than 200kg above the system is a little reluctant. Small refrigerant recovery machine can be collected, but for the quality of the machine requirements are relatively high, because want to so much refrigerant all collected, the recovery machine is required to work for a long time, so the machine equipment needs to be able to cope with the intensity of 24-hour work.

For a 200-800kg system it would be too slow to use a small recycling machine, because the larger the system, the larger the amount of gas to be recycled later, and the longer it will take. This time you need to use the central air conditioning refrigerant recovery machine, the power is usually in 2-3HP, about 2-5 hours recovery, direct liquid recovery speed in 200-300kg / h, push and pull the liquid recovery speed of about 1300kg / h, the gas recovery speed in 50-70kg / h.

Whether as a repairer or factory with a refrigerant recovery machine, recovery with the compressor is best to use oil-free lubrication type, oil-free type has many advantages, with a long life, high vacuum recovery, high compression ratio, high temperature, multi-refrigerant general purpose and so on. Because of the oil-free type a device of a variety of refrigerant common, at the same time, maintenance-free cost, so for the factory or maintenance business can save a lot of money, and easy to operate. Oil compressor recovery machine, in the recovery process should pay close attention to the loss of compressor oil and recovery of high temperature, timely replenishment of compressor oil, to prevent compressor damage in the middle of the process. In addition there is oil compressor recovery of different refrigerants need to compressor oil completely changed, otherwise it will cause lubricating oil contamination refrigerant.

3、Refrigerant recovery for refrigeration equipment with system refrigerant quantity within 800-3000kg

800-1000kg system, if for the speed requirements are not very high, you can also use 2, 3HP central air conditioning recovery machine, time is about 7-9 hours.

For factories or projects, if the number of units to be recovered is relatively large, or factory production line operation, then the speed of this medium-sized equipment is a little bit unable to keep up with, this time we need to use large refrigerant recycling machine, the power of the equipment in the 10-25HP, the gas recycling speed in the 100-160kg/h, the speed of the push-pull liquid recycling speed in the 5000-8000kg/h. The time for the recovery of 800-1000kg system is about 7-9 hours. The time for 800-1000kg system is about 2 hours, suitable for production line operation. 3000kg refrigerant system can finish all the recovery work in 5 hours.

2 points to note:

1. Recover the refrigerant of this kind of large and medium-sized air conditioning system, because the amount of recovery is relatively large, so it is not realistic to remove the oil inside the refrigerant in one step, the recovered liquid has to be turned into a gas before passing through the oil separator in order to separate the refrigerant oil, so that the oil separator will greatly reduce the speed of the equipment to recover the refrigerant, and the overhaul of such a large system is generally not required to separate the refrigerant oil, the system after the completion of the overhaul is Can directly charge the refrigerant to the original system.

2. Domestic air conditioning refrigerant purity has a great impact on the energy efficiency ratio, so manufacturers need refrigerant recovery machine on the production line is to be able to separate water, impurities, acid, refrigeration oil and non-condensable gases, for the purity of refrigerant treatment has very high requirements, this equipment should be designed and produced according to the requirements of different factories.

Would you like to know more about refrigerant recovery machines, please read this article: “Refrigerant Recovery Machines”