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GWA industrial heat exchangers ( Jiangsu ) Co., Ltd.
Add: 99#, Chuangye Rd., Jinxi Industrial garden, Jintan city, Jiangsu Province, CN.
Phone: +86 (0) 519-68080237
Fax: +86 (0) 519-68080261
Phone: 18796908666
Website:www.jimdennys.net
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How to choose the type of plate heat exchanger
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| publish time：2013.11.16 read： |
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1 plate of choice:
Reliance upon the practice of heat exchange system needs to choose type or corrugated plates . Flow and pressure drop for small cases, should choose small resistance plate , on the contrary choose to use a large plate resistance . According to the medium temperature and pressure conditions , to determine the selection of brazed or detachable plate heat exchanger. Select the plate when not selected area is too small veneer sheet , in order to avoid too many of plates , so that the flow rate between the plates becomes small , the heat transfer coefficient is too low , a larger plate heat exchanger to be more attention to this issue .
2 runners and selection process :
Passage refers to the two plate heat exchanger between the plates allow fluid flow through the channel , and the flow of a fluid is flowing in the same direction of the journey. Generally, parallel or in series by means of the convergence of several channels together to form a cooling medium channel different combinations. The combination of the process which satisfies the requirements under the process conditions and fluid resistance according to the heat transfer calculated. Try to make both hot and cold runner convective heat transfer coefficients within or close to the same , so get the best heat transfer results . The reason is that both sides of the convection heat transfer surface of the heat transfer coefficient is the same , or similar, which is the best heat transfer coefficient . Even the media in the plate heat exchanger in the flow between the plates are not equal , but still used to calculate the average speed of the heat transfer and flow resistance of the medium .
3 drop check :
In determining the plate heat exchanger models , because of the pressure drop is required, it should be checked in detail . If you check the pressure difference does not exceed the scope of work , you can determine the model. |
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