Midea High Efficiency Series Water Cooled Centrifugal Low Temperature Chiller

Our company is a company specializing in the production of medium and high-end Copper Tube For Heat Pump Condenser, York Screw Chiller, Direct-fired Chiller For Shuangliang, with nearly ten years of enterprise accumulation and professional rich experience, with an independent product research and development center and an excellent team of designers, devoting to the research and development of high-quality mid-priced products. We will uphold the work style of "seeking truth, innovation, hard work, and honesty", and strive to create cost-effective products in the industry and provide after-sales services that satisfy users. Since its inception, our company has been expanding the scale of production, improving technology, a sound quality management system and after-sales service.

Unit characteristics

1. It is specially designed for 134a chlorine-free refrigerant, which does not dissipate the ozone layer at all. It is a new environmentally friendly refrigerant.

2. The unit is designed with positive pressure and compact structure. Compared with the unit with negative pressure design, the volume is reduced by more than 35%. The reduced size means a reduction in the area occupied by the computer room, and the positive pressure design does not require a pumping recovery device.

3. The design and manufacture of key compressor components share the field of aero engine design and manufacture.

4. The new high-efficiency impeller designed by the ternary flow principle is composed of backward curved blades and separated blades to ensure the efficiency of the unit at full load and partial load.

5. The cone flaring adopts new aero-engine technology, which improves the efficiency of the unit at full load. The variable diffuser structure adjusts the direction of the air inlet, which greatly improves the partial load performance of the unit.

6. The refrigerant inlet guide vane continuously adjusts the cooling capacity to keep the cold water outlet temperature at the set point ±0.3°C. Adjust the refrigerant inlet airflow to operate in a wide and stable range of working conditions to prevent the unit from surge, cavitation and vibration.

7. The super-funny heat transfer tube further reduces the heat transfer resistance and improves the heat transfer performance. The newly designed heat exchanger reduces the refrigerant charge and reduces costs.

8. The linear float valve throttling system adjusts the flow of refrigerant according to the change of the working condition of the unit, guarantees the partial load performance of the unit, establishes a liquid seal, and eliminates unnecessary hot gas bypass.

9. The optimized pipeline design of the unit reduces the pressure loss of refrigerant flow and ensures the efficiency of the unit.

10. Compared with multi-stage compression, advanced single-effect compression has fewer moving parts, which greatly improves the reliability of the unit.

11. The lubricating oil is directly cooled by the refrigerant in the oil cooler, without the need for cooling water to take over, reducing installation costs.

12. The evaporator and condenser are designed and manufactured in accordance with my country's pressure vessel specifications. The unit isolation valve allows the heat exchange tube to be used as a liquid storage tube, and can be equipped with a pumping system to transport refrigerant and easy maintenance.

Model description

Dimensions

Typical piping and wiring

Line number description

Wiring and pipeline requirements:

1. The construction unit must lay all the cables in place and make the line head identification symbols.

2. A filter must be installed in the cold water and cooling water piping system.

3. Install a thermometer (0-50℃) and pressure gauge (0-1MPa or 2MPa) on the inlet and outlet pipes.

4. It is recommended that the construction unit use copper pipes (outer diameter 42mm, wall thickness 4mm) to connect the safety valve outlet to the outdoors.

5. In order to ensure personal safety and health, it is recommended to install an oxygen content detector in the computer room. When the oxygen is partially consumed or replaced and the oxygen content is lower than 19.5%, an alarm is required.

On-site construction, unit commissioning

How to select the refrigeration chiller?

The selection principle is to see the size and purpose of the refrigeration space, and then select the corresponding refrigeration compressor and related equipment.

A refrigerator is a machine that transfers the heat of a cooled object with a lower temperature to the environment medium to obtain cold energy. The heat transferred from a lower temperature object is traditionally called coldness.

The working fluid in the refrigerator that participates in the change of the thermal process (energy conversion and heat transfer) is called refrigerant. The temperature range of refrigeration is usually above 120K, and below 120K belongs to the range of deep cryogenic technology.

Compression refrigerator. Rely on the action of the compressor to increase the pressure of the refrigerant to realize the refrigeration cycle.

Absorption refrigerator. Relying on the role of the absorber-generator group (thermochemical compressor) to complete the refrigeration cycle, it can be divided into three types: ammonia absorption type, lithium bromide absorption type and absorption diffusion type.

Refrigeration is a science and technology that reduces the temperature of a certain space or object below the ambient temperature and maintains it in a prescribed low temperature state. It continues to develop with people's requirements for low temperature conditions and the improvement of social productivity.

The main performance indicators of refrigerators include operating temperature (evaporation temperature and condensation temperature for vapor compression refrigerators, and temperature of the object to be cooled and temperature of cooling medium for gas compression refrigerators and semiconductor refrigerators), cooling capacity (refrigeration The amount of heat removed from the object to be cooled per unit time).

Power or heat consumption, refrigeration coefficient (a measure of the economics of a compression chiller, refers to the amount of cold that can be obtained by consuming a unit of work) and thermal coefficient (a measure of the economics of absorption and steam jet chillers, refers to the unit of consumption The amount of cold that can be obtained by heat) and so on. The most widely used modern refrigerators are vapor compression refrigerators. Common brands include Sanyo, Panasonic, Shuangliang, BROAD LG, etc.

In addition, according to the cooling method, it can also be divided into air-cooled and water-cooled.

The air-cooled chiller contains a heat preservation water tank and a water pump in its body, so there is no need to add a cooling water tower to dissipate heat. It is convenient to install and move. But it has higher requirements for the working environment. First of all, because it is cooled by hot air circulation, if the ventilation effect of the installation workshop is not good, it will directly affect the cooling effect of the chiller.

Water-cooled chillers can be divided into open type, sealed type and screw type. The water-cooled chiller must be equipped with an additional water tank, and the sealed type does not need to be because it has a built-in water tank. If the requirement for cooling capacity is very large, it is recommended to choose a screw chiller.

Our company strictly selects the world's top material manufacturers, eliminates brand premiums and intermediate links to provide consumers with Midea High Efficiency Series Water Cooled Centrifugal Low Temperature Chiller that truly integrate function, appearance and price. Entering a new era, we are actively engaged in transformation, upgrading and restructuring around the goal of building a world class enterprise with global competitiveness. Our company continues to develop human resources, strengthen staff training, improve the quality of staff, and ultimately achieve the purpose of enhancing the competitiveness of enterprises.