How to use a 30 ton chiller to save energy?

How to use a 30 ton chiller to save energy?

1. Energy saving principle for LC -25°C ~ -5°C 低温チラー (chillers): 1. Generating temperature and reducing condensation temperature. On the premise of meeting equipment safety and production requirements, try to increase evaporation temperature and reduce condensation temperature. Therefore, the renovation of the cooling tower has been increased to ensure the efficiency of cooling water.

2. Prevent and reduce pipe fouling to improve the heat exchange efficiency of the condenser and evaporator. If water treatment is not done well, calcium and magnesium bicarbonate will be heated to produce calcium and magnesium carbonate that will deposit on the pipe.

This will reduce the thermal conductivity, affect the heat exchange efficiency of the condenser and evaporator, and significantly increase the operating electricity cost of the equipment. At this time, in addition to using water treatment technology, regular automatic pipeline cleaning equipment can also be used for pipeline cleaning.

3. Adjust the reasonable operating load of the water chiller (refrigerator) equipment

Under the premise of ensuring the safe operation of the equipment, the power consumption per unit cooling capacity of the refrigeration host running at 70% – 80% load is smaller than that running at 100% load. The operation of water pumps and cooling towers should be comprehensively considered when using this method to start the machine.

4. The frequency conversion device of a water chiller (refrigerator) is used to adjust the rotational speed of the compressor of the centrifugal water chiller (refrigerator). After the refrigerant with low pressure passes through the centrifuge, the pressure increases. The higher the rotational speed of the centrifuge, the higher the pressure rise.

In actual operation, most of the equipment is operating under non full load. Centrifuges with fixed rotation speed cause energy waste when the equipment operates at a small load. The variable frequency centrifugal water chiller (refrigerator) can automatically adjust the compressor speed according to the change of load, which has a large energy-saving space.

Strengthen the operation management of water chillers, establish a water chiller electricity management and unit consumption statistics system. Energy consumption and material consumption quotas that are easy to assess, add necessary measuring instruments and appliances, carry out energy conservation and technical transformation work, and institutionalize energy conservation work.

Improve the working conditions of the chiller as much as possible:

Improve water quality, slow down scaling, improve the condensation effect of the condenser, and reduce the condensation temperature.

The load rate of the chiller motor is 0. When it is below 4, the motor can be changed from △ to Y connection to improve the power factor, and it is required that the △ and Y connection methods can be automatically switched.

Try to use automatic control operation instead of manual operation, which can achieve the operation of the water chiller system under optimal conditions, which can save 10-15% of electricity.