Frequently asked questions about industrial chillers

The exhaust temperature of the compressor in the industrial chiller determines whether the operation of the equipment can be stable and efficient. Among them, the compressor is prone to the problem of excessive exhaust temperature. Once this situation occurs, it is easy to make the pressure of the industrial chiller Too high and the temperature rise, the load is too high, the consequences of reducing the efficiency of the compressor of the industrial chiller, the cooling capacity, and other problems

Ⅰ. The influence of high exhaust temperature

1. Too high exhaust temperature will lead to a decrease in the working efficiency of the condenser of the industrial chiller. There are many reasons for the excessively high exhaust temperature, such as insufficient cooling water flow, excessively high water temperature for a long time, and the exhaust temperature will be too high , once the exhaust temperature of the compressor is too high, there will be problems with the working efficiency. In addition, after the high-temperature gas is discharged into the condenser, the condenser cannot completely cool the refrigerant, and liquid accumulation may occur. After a long time of use, the working efficiency of the condenser will decrease. Correspondingly, when the working efficiency of the condenser drops, it will also affect the working efficiency of the compressor at the same time.

2. Low suction pressure and high suction heat

When the exhaust temperature is too high, the suction temperature will increase correspondingly, and because the compressor discharge temperature is high, it can be inferred that the compressor of the compressor is relatively large, which is because the suction pressure must be low during suction. , The solution to reducing the exhaust temperature and exhaust pressure can be achieved by reducing the compression ratio.

Ⅱ. the method to solve the exhaust temperature is too high

According to the above-mentioned effects and causes of excessively high exhaust temperature, we can know that in order to reduce the exhaust temperature of industrial chillers, the compressor can be cooled. The coldest bacteria suggest that you can choose the following methods to solve the problem.

1. Increase cooling water flow and heat dissipation and ventilation of water tanks and water towers.

The cooling water in the water tank of the air-cooled industrial chiller and the cooling water tower of the water-cooled industrial chiller exists for the cooling and heat exchange of the condenser, which can take away the heat generated by the compressor. The heat dissipation and ventilation capacity of the water tank of the cold industrial chiller and the water tower of the water-cooled industrial chiller can keep the temperature of the cooling water within a limited range, so as to maximize the cooling of the compressor.

2. Directly reduce the exhaust temperature of the refrigeration compressor

The so-called direct reduction of the discharge temperature of the compressor can be started by reducing the compression ratio of the compressor and reducing the load. Although reducing the compression ratio will reduce the efficiency of the compressor, it can solve the problem of excessively high discharge temperature of the compressor. question.

3. Rational use of refrigerant

At the same evaporating temperature and condensing temperature, different types of refrigerants have different exhaust temperatures. Users should add different refrigerants according to the requirements of industrial chiller manufacturers.

Ⅲ. Overview of the correct cleaning method of the condenser

1. Before cleaning the condenser, be sure to close the condenser water inlet valve of the cold storage in time;

2. After the valve is closed, discharge the excess moisture inside the Longpu refrigeration system in time;

3. In order to ensure the best cleaning effect, two temporary circulation systems must be set up on the inlet and outlet pipes of the condenser; this circulation system can remove the drain valve, safety valve, pressure gauge, etc., and then pass the hose and tank External circulation pump connection;

4. After making the corresponding preparations, you can dissolve the highly efficient, safe, economical, energy-saving, environmentally friendly and durable professional descaling agent, and then use the pump to add water from the lowest part of the condenser, and let it circulate for 3 to 5 hours. Left and right, thoroughly clean the scale inside the condenser.

5. After the dirt inside the condenser is cleaned, discharge the sewage in time, replace it with clean water and rinse again;

6. After the whole cleaning process is over, it is necessary to open the end plate of the condenser, and use a brush to pull back and forth on the inner wall of the copper tube of each condenser, so as to remove the dirt and scale on the inner wall of the copper tube and make it clean as new. Bright without corrosion.

7. After cleaning, discharge the sewage in time, rinse with clean water repeatedly, and then cover the end cover of the condenser to restore it to its original state; add the pre-film agent to circulate for about 10 to 20 minutes, soak for 24 hours, and discharge Sewage, so that the inside of the copper pipe can form a protective film, not only to oxidize, but also to slow down scaling.