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| Hybrid Heat Exchanger |
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Hybrid heat exchanger, heat exchanger |
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Hybrid heat exchanger would be to count on hot and cold fluid's direct contact to heat transfer, this heat transfer way can keep away from the dirt resistance at the heat transfer partitions and both sides of partitions, in the event that the contact between fluids is in very good condition, there will be greater heat transfer rate. For that reason, any occasion that permits the fluid mixed with each other can make use of the hybrid heat exchanger, such as gas washing and cooling, circulating water cooling, the mixture heating between steam and water, steam condensation and the like. Its application is all through the chemical and metallurgical enterprises, power engineering, air-conditioning engineering and many other manufacturing sectors.
In accordance with the different usages, hybrid heat exchanger can be divided into quite a few different types:
First, cooling tower
In such devices, people use natural ventilation or mechanical ventilation ways to cool and reduce the temperature of the water increased temperature during the production in order to boost economic benefits of the system. To illustrate, recycled water in thermal power plants or nuclear power plants, the cooling water in ammonia production, which through the temperature reduction in the cooling can be recycled to use, this approach has been far and widely used in the practical projects.
Second, gas scrubber
There are a variety of purposes using this equipment to wash the gas in industry, for example using liquid to absorb certain components of gas mixture to remove the dust, to humidify or dry the gas. But its most widespread usage is to cooling gas, and most of the used cooling liquid is water. spray chamber is far and widely used in air conditioning engineering, it can be considered as 1 of its special form. Spray chamber can not just cooling the air the same as gas scrubber, it also can do its heat treatment. Nevertheless, it also has high requirements on water quality and disadvantages for example large area, high pump energy consumption: Thereby, in present general buildings, the spray chamber has been infrequently used or used only as the humidification device.
Third, spray heat exchangers
In this device, the higher pressure fluid is sprayed from the spray nozzle, and forming a high speed, low-pressure fluid is introduced into the mixing chamber and has the direct contact with the spray fluid and then undergo heat transfer, and together enter the diffusion tube, after reaching the same pressure and temperature at outlet of the diffusion tube, they would be sent to the user.
4th, mixed condenser
This equipment is frequently using the method of the direct contacting with water and steam to make steam condensation. |
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