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nature : two metal plates into a spiral-shaped volumes constitute the heat exchanger wall plate heat exchangers. Hot and cold fluid in fluid metal plate on both sides of the trench flow. The Center will be room to partition separating the trench. Advantages are : (a) heat loss is small; (2) compact equipment; (3) units to large heat transfer area; (4) high-efficiency heat exchanger. Disadvantages are : (a) to produce more complex; (2) The equipment must be sealed attention; (3) operating pressure is usually not exceed Table 0.5 MPa pressure (atmospheric pressure).
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