Is there a centrifugal type of air cooled heat pump, and the similarities and differences between ce

Air-cooled mostly modular scroll machines, water-cooled water source heat pumps are screw, water source heat pumps have centrifugal is a new technology, only to come out, there are a few companies with such technical capabilities, Midea, Geri, Foton, etc. Energy efficiency air cooling is generally around, water sources are generally around 5, and centrifugation is currently known above the amount, which is quite energy-saving. There is not much difference in cost, and the more energy consumption is later, the more money is saved, but when the area is small, the module is selected, and the basic water source screw or centrifuge is selected when the area is large.

Centrifugal compressors are generally used in medium and large water-cooled chillers with a cooling capacity of more than 500 tons, and there are still big problems in the technology of air-cooled heat pump units.

Clement this brand is estimated that many people have not heard, this year I was fortunate to see this air-cooled screw unit in a hotel in Chongming, Shanghai, two units with a total of four screw compressors, in the case of signing a maintenance contract with the manufacturer, the compressor broke two, both of which were burned by the compressor motor coil, and the contactor was burned miserably, this kind of machine did not even play the most basic protection, it was really disappointing!

200 2000kw cooling capacity with screw machine, 200kw less than 200kw scroll machine, 2000kw centrifuge most, what kind of cooling capacity with what kind of compressor is more reasonable.

Haven't heard of a centrifugal one!

Centrifugal fans and centrifugal pumps are both centrifugal machines that use rotational power to suck in and out fluids. However, they have some powerful differences: centrifugal fans use apparent pressure to generate temperature and airflow, and are generally used for ventilation; The function of centrifugal pump is to pump materials from low water level to high water level, which is often used for liquid extraction, hydrolysis, water treatment, etc.

There are also some differences between centrifugal fans and centrifugal pumps in terms of structure. The rotating parts of the two have different shapes: the rotating part of a centrifugal fan is the impeller, while the rotating part of a centrifugal pump is the rotor.

In addition, there are different installation methods for the two, centrifugal fans are mainly installed vertically, and centrifugal pumps are installed horizontally.

Centrifugal fans and centrifugal pumps are both centrifugal machines, and their mechanism structure and principle are the same, but their applications are different. The main function of the centrifugal ventilation machine is to provide negative pressure of the gas, that is, to draw the air into the ventilator, and then compress the air before expelling. It is mainly used in industrial air conditioning and home ventilation systems.

The centrifugal pump is used to transport liquid, and its principle is to suck the low-pressure liquid into the pump under the action of effective dispersion kinetic energy, and transport the liquid to the high-pressure area through the action of centrifugal power. It is mainly used in the occasion of conveying fluids in industrial pipelines.

Centrifugal fans and centrifugal pumps are both centrifugal mechanical devices. Their mechanism is driven by the sail containing coarse motor centrifugal vane ballast wheel, the kinetic energy of the wheel rim is converted into the axial kinetic energy of the fluid, so that the flow of the fluid moves to achieve the purpose of transportation or ventilation. However, they also have differences.

1.Different uses: centrifugal fan is used for ventilation, its function is to separate the outside air, and discharge the harmful gases or temperature and humidity in the air, so as to achieve the role of ventilation; The centrifugal pump is used for liquid transportation and pressurization, which can transport the liquid to the designated place and pressurize the liquid, so as to achieve the purpose of transportation.

2.The working principle is different: the working principle of the centrifugal fan is to compress the outside air through the centrifugal impeller and introduce it into the room, and then purify it through the filter and other equipment, and finally introduce the air into the room, so as to achieve the purpose of ventilation; The working principle of the centrifugal pump is to convert the kinetic energy of the liquid through the centrifugal impeller into the axial kinetic energy of the fluid, so that the liquid can move and achieve the purpose of transportation.

3.Different structure: the structure of centrifugal fan is much more complex than that of centrifugal pump, and its structure mainly includes motor, impeller, casing, filter, exhaust outlet and other components; The structure of the centrifugal pump is relatively simple, and its structure mainly includes motors, impellers, casings, pipelines and other components.

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Centrifugal force is the driving principle of the device, but their main functions are different, and the parameters and performance in use are also different.

Centrifugal fan is a device used to generate airflow and ventilation and cooling, and its working principle is to generate centrifugal force by rotating the outside air through the impeller, and then discharge it. Therefore, the main focus of the ventilator is to generate air volume. The air pressure of the ventilator is generally not too high, generally around 2000 3000pa.

The centrifugal pump is a device used to transport the medium, its main working principle is to suck the medium from the center, and then accelerate the medium through the rotation of the impeller to produce high-speed centrifugal force, and the medium is transported to the outlet part under the action of centrifugal force. Therefore, centrifugal pumps mainly focus on the delivery flow rate and pressure head. The pressure of centrifugal pumps is much greater than that of fans, generally around 10,000 20,000pa.

Therefore, although centrifugal fans and centrifugal pumps are very similar in their working principle, they also have significant differences in parameters and performance due to their different primary uses.

Centrifugal fans and centrifugal pumps are both devices that use centrifugal force to generate fluid motion, but they operate slightly differently and are used in different applications, so their air pressure and performance are also different.

Centrifugal ventilator is mainly used for ventilation, air supply, exhaust and other occasions, and its working principle is to generate centrifugal force through the rotation of the impeller, so that the gas flows under the action of the impeller, so as to achieve the purpose of ventilation or exhaust gas. The wind pressure is generally between 50 and 5000 pa statically, depending on the type and purpose of the centrifuge.

The centrifugal pump is mainly used to transport liquid, and its working principle is to generate centrifugal force through the rotation of the impeller, so that the liquid flows under the action of the impeller, so as to achieve the purpose of transportation. The head is generally between 5 200 m of static pressure, depending on the type and purpose of the pump.

Therefore, parameters such as air pressure and head of centrifugal fans and centrifugal pumps have different magnitudes and application ranges, which need to be selected according to specific use occasions and needs.

Centrifugal ventilators and centrifugal pumps are both centrifugal equipment. Centrifugal fans provide ventilation by rotating centrifugal blades to create airflow. The magnitude of the wind pressure directly depends on the speed of the rotating centrifugal blades, the number of blades, the size of the blades and the geometry of the inlet and outlet.

The centrifugal pump generates kinetic energy by rotating the centrifugal impeller to send the liquid to the pipeline, so as to realize the liquid conveying function. The comparison is mainly due to the size of the impeller, the rotational speed and the geometry of the inlet and outlet. In general, centrifugal fans and centrifugal pumps are both devices that use rotating centrifugal blades or impellers to generate kinetic energy, and their performance indicators are different, but both play the role of centrifugal force.