Plate heat exchanger is a new type of heat exchanger made by stacking corrugated metal sheets. The plate heat exchanger is assembled from many thin plates stamped with berths at intervals.Under normal circumstances, we mainly divide plate heat exchangers into four categories based on structure and shape.The working medium flows through the narrow and tortuous channels formed between the plates respectively to exchange heat.Because the plates are installed upside down, the thousands of contacts formed by the crossing of the ripples are staggered and distributed, which causes the fluid to flow around these contacts and produce a heat transfer coefficient that is strongly disturbed. In this way, the heat exchange efficiency and pressure bearing capacity of the heat exchanger.For a 500-meter high-tail building, if there is no equipment layer in the middle, the maximum hydrostatic pressure will reach 5.0MPa. Due to the limited pressure bearing capacity of the equipment, only one plate heat exchange can be used. When the height of the high-rise is too high, the secondary plate heat exchange can also be used to solve the equipment pressure problem.The pressure of the primary plate heat exchanger and the secondary plate heat exchanger is related to the height of the super high-rise building and the position of the plate heat exchanger.