Steam condenser design
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raw data: Normal pressure air t1=20℃ is heated to t2=78℃. Saturated water vapor with a pressure of 200Kpa condenses and releases heat. The heating load is 180KW. Can anyone help me?
You should calculate this yourself. With the heat load and the temperature change of the air, you can calculate the air volume. It is known that the saturated steam is 200kpa, and the amount of steam can be directly calculated using the latent heat of steam. Now that you have the amount of hot and cold logistics, heat load, and logarithmic average temperature, you can calculate the heat exchange area, select a standard heat exchanger after considering the margin based on the calculated value, and then calculate the line speed.
The answer on the second floor is very correct. This is how it is calculated.
So what type of heat exchanger is better to choose?
To use steam to heat air, you can choose a U-shaped tube, with the steam going through the tube side and the air going through the shell side.
study* It’s on the 2nd floor, thanks for the technical support!
Fin tube or sleeved tube heat exchanger, the air flows outside the tube to enhance heat transfer, and the steam flows inside the tube.
Let me choose, I recommend the finned tube type
This post was last edited by breath on 2009-5-15 17:47 This is similar to an air preheater. There are many examples of practical applications. The fan coil used to heat the house in winter is similar to this. Generally, 32mm finned tubes are used, which can be aluminum-wound or rolled finned tubes, or steel-finned high-frequency welded tubes or plain tubes. However, the equipment is heavier and the cost is higher.