What is the significance of the pressure loss and temperature rise requirements on the water side of a heat exchanger?
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The design and manufacture of lubricating oil coolers shall comply with the provisions of GB151 and GB150 standards. The pressure loss on the water side shall not exceed 0.07 MPa, and the temperature rise of the circulating water shall be no less than 6°C. Why are such requirements set for the pressure loss and temperature rise?
The operation of the entire system is achieved based on the requirements of each unit. Looking at just one unit on its own doesn’t really make much sense.
Pressure loss means that the flow rate of water must not be too high, as a higher flow rate results in greater pressure drop. Temperature rise determines the water volume required; the lower the temperature rise, the larger the water volume needed.
What are the disadvantages if the flow rate is too high and the pressure drop is excessive?
Too high a flow rate increases the pipe resistance, requiring higher pump power, which is not conducive to energy savings.