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What is the thermal system of spiral plate heat exchanger?
Feb 28, 2018

Spiral plate heat exchanger has obvious structural features, that is, by two parallel to the thin steel plate in the spiral forming a special roll bed made from the two plates and the formation of two mutually parallel rectangular spiral flow path for fluid by.


In this way, the thin steel sheet becomes the heat transfer surface of the entire spiral plate heat exchanger, the inner ends of the two spiral thin steel sheets are welded to the center bulkhead, the bulkhead separates the flow paths, the end cap covers the flow on both sides Road system; application of distance between the two helical plates to maintain a certain distance between each other, and to improve the pressure plate spiral ability.


In the cooling process of the organic heat carrier thermal energy system, the temperature difference between the hot and cold fluids is relatively large, and the maximum temperature of the hot fluid can reach about 200 ° C., while the cold fluid, that is, the circulating water, is at normal temperature, thus making the tube heat exchanger more Large temperature stress, while the spiral plate heat exchanger is characterized by allowing expansion, when the spiral body after heating or cooling can be the same as the watch clockwork elongation or contraction.


The spiral plate heat exchanger between the spirochetes are on each side of the hot fluid on the other side of the cold fluid, the outermost contact with the atmosphere, the temperature difference between the spiral body tube heat exchanger tubes and The temperature difference between the shells is so pronounced that there is no large temperature difference stress.


In spiral plate heat exchangers, because the media flow path is a single channel, and its permissible flow rate is higher than other types of heat exchangers, the dirt is not easily deposited. If there is dirt deposited somewhere in the channel, the channel cut Area will be reduced at a certain flow rate, the local flow rate will increase on the dirt area from the erosion effect, so the dirt deposition rate is very slow, and easy to clean, so that not only conducive to the organic heat carrier thermal energy system in normal operation, and will not Affect the heat transfer effect, can accurately control the outlet temperature.

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