【Daily Question】12.8 For water coolers, using the cooling water inlet for control has more disadvantages than advantages
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This post was last edited by Guan Gongyu on 2015-12-13 at 20:19. True or False: For water coolers, using the cooling water inlet for control has more disadvantages than advantages. Answer correct: +2. In-depth discussion: +5. Promotion: [Petroleum Chemical Activities] Registration for my \"most\" crazy event. [Petroleum and Chemicals Section] Show off your \"SimSun font\" style – registration available @Guan Gongyu
For water coolers, using the cooling water inlet for control has more disadvantages than advantages – it’s a mistake
For water coolers, using the cooling water inlet for control has more disadvantages than advantages
Correct. Using the inlet can help save cold water, but restricting the water flow at the inlet can cause short circuits in the water flow within the cooler or a reduction in flow velocity, resulting in hotter conditions at the top and cooler conditions at the bottom. Therefore, it is better to use the outlet for control
For water coolers, using the cooling water inlet for control has more disadvantages than advantages; it is incorrect to do so
For water coolers, controlling it with the cooling water inlet has more disadvantages than advantages; for oil coolers, using the cooling water inlet valve for control also has more disadvantages than advantages. Controlling the inlet can save cold water, but limiting the water flow at the inlet can cause short circuits in the water flow within the cooler or a reduction in flow velocity, resulting in hotter conditions at the top and cooler conditions at the bottom. The use of export controls can ensure the flow rate and heat exchange efficiency. Entry control is generally not advisable. Control of the inlet valve can reduce the residence time of the circulating water in the heat exchanger, thereby minimizing scaling in the tube bundle. Control of the outlet valve can increase the pressure in the tube side, reducing the risk of leaks. Generally, it is the inlet valve that is used to control the temperature difference; the recommended range for this temperature difference in circulating water is 8–10 degrees. Due to poor quality of the circulating water, some systems use a range of 5–6 degrees, and this range varies between winter and summer. Additionally, in some heat exchangers, although the temperature difference is large, the medium on the shell side often has a temperature of over 100 degrees, and such water is used directly for cooling. This results in wasted low-temperature heat and also leads to unnecessary consumption of circulating water. The location of the water cooler is usually above the water supply pipes, and the amount of cooling water should be controlled using the outlet valve. This ensures proper water pressure, fills the cooler completely, and prevents the formation of air pockets.
For water coolers, using the cooling water inlet for control has more disadvantages than advantages. (Correct)
It’s right, but I don’t know why.