The difference and maintenance of air cooling and water cooling of flake ice machine

From the market point of view, the condensation methods of flake ice machines are roughly divided into two types: air cooling and water cooling. But what is the difference between air cooling and water cooling, and what are the advantages and disadvantages of air cooling and water cooling? I think there may be some customers who do not understand enough. Today I will tell you the difference between air cooling and water cooling.

air cooled condenser

As the name suggests, the air-cooled flake ice machine uses an air-cooled condenser.

Cooling performance:

The ice flake machine manufacturer is determined by the ambient temperature. The higher the ambient temperature, the higher the condensation temperature. Generally, when an air-cooled condenser is used, the condensation temperature is 7~12°C higher than the ambient temperature, and the value of 7~12°C is called the heat transfer temperature difference. The higher the condensing temperature, the lower the cooling efficiency of the refrigeration unit, so we must control the heat transfer temperature difference so that it should not be too large. However, if the temperature difference of the heat exchange is to be too small, the larger the heat exchange area of the air-cooled condenser and the circulating air volume, the higher the cost of the air-cooled condenser. The temperature limit is not higher than 55°C and not lower than 20°C. Generally, air-cooled condensers are not recommended in areas where the ambient temperature exceeds 42°C. So whether you can choose an air-cooled condenser, you must first confirm the ambient temperature. Generally, when designing an air-cooled flake ice machine, the customer must be required to provide the highest ambient dry bulb temperature in the local area throughout the year. Air-cooled condensers cannot be used in areas where the ambient temperature exceeds 40°C.

advantage:

1. No need for water resources, low operating cost.

2. It is easy to install and use, no other supporting equipment is needed, and it can be put into operation as long as the power is connected, without polluting the environment.

3. It is suitable for areas with severe water shortage or rare water supply.

shortcoming:

1. High cost input.

2. The high condensation temperature reduces the operating efficiency of the refrigeration unit.

3. It is not suitable for areas with dirty air and dusty climate.

water cooled condenser

The same water-cooled flake ice machine uses a water-cooled condenser.

cooling performance

It is determined by the ambient wet bulb temperature, the higher the ambient wet bulb temperature, the higher the condensation temperature. Generally, a water-cooled condenser is used, and the condensation temperature is about 5~7°C higher than the ambient wet bulb temperature.

temperature limit

Not higher than 55°C, not lower than 20°C. Generally, water-cooled condensers are not recommended in areas where the ambient wet bulb temperature exceeds 42°C. So whether you can choose a water-cooled condenser, you must first confirm the ambient wet bulb temperature.

Generally, when designing a water-cooled flake ice machine, the customer must be required to provide the highest ambient wet bulb temperature in the local area throughout the year. At the same time, when the ambient wet bulb temperature exceeds 50°C, the condenser cannot be cooled with water, and the cooling tower is easily damaged by the high temperature. Cooling towers must be used with sun protection.

working principle

The high-temperature and high-pressure refrigerant gas enters the shell side of the condenser from the air inlet above the condenser, and the cooling water pump pumps the cooling water out of the water storage tank of the cooling tower, and enters the condenser through the water inlet below the right side of the condenser. In the tube side, it exchanges heat with the refrigerant outside the copper tube of the condenser, and the temperature rises. It comes out from the water outlet on the upper right side of the condenser, passes through the water outlet pipe, enters the water inlet pipe of the cooling tower, and then is sprayed by the sprinkler pipe. The water outlet is evenly sprinkled on the filler, and the fan sucks air to exchange heat with the water in the filler to reduce the water temperature, and the cooled water is stored in the water storage tank for repeated use.

The high-temperature and high-pressure refrigerant gas exchanges heat with the cooling water flowing in the tube side in the shell side of the condenser, and the temperature drops and condenses into liquid. The exhaust heat of the refrigeration unit first exchanges heat with water (heat exchange in condensation), and then the water exchanges heat with air (heat exchange in cooling tower)

Advantages of natural borneol manufacturers:

1. Make the condensation temperature of the refrigeration unit low and improve the refrigeration efficiency.

2. The initial investment cost is lower than that of air cooling

3. Good cooling effect, suitable for medium and large refrigeration systems.

shortcoming:

1. Consumption of water resources.

2. Spraying water will have some impact on the surrounding environment.

3. Waterway system and water supply system need to be installed.

Kind tips

In general, small flake ice machines are conventionally air-cooled, and large and medium flake ice machines are conventionally water-cooled.

Flake ice machine maintenance precautions

Warning: For any maintenance, repair and other work, please be sure to cut off the main power supply of the flake ice machine before operating. Especially when the flake ice machine is in the state of "full of ice and lack of water" and stops, do not perform any maintenance or repairs on the flake ice machine (not to enter the inside of the machine), because the flake ice machine may automatically turn off at any time. cause injury to persons by starting work.