Could some expert please help calculate how large a heat exchange area is required?
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Each coal grinder is equipped with a 100% capacity oil cooler, which features a design that allows for leak detection without the need to drain oil. Power loss of the reducer associated with the light oil station: 77.4 KJ/s (provisional) ； Oil flow rate: 350 L/min; Heat transfer capacity: ≥320 kcal/m2h℃; Pressure test pressure: 1.0 MPa on both the oil side and the water side; Cooling water volume: 21 m3/h ； Supply pressure: Design pressure: 1.0 MPa; Pressure drop on oil and water sides: ≤0.1 MPa. Cooling water inlet temperature: Operating temperature: 38 ℃ (maximum); Oil inlet temperature: 50 ℃; Oil temperature after cooler: ≤45 ℃. Material of heat exchange plates: 316L stainless steel; Viscosity: 320 cst
Do you use tube cooling or plate cooling for this?
It shouldn’t be very large; I guess it’s just a few square meters
Assuming the oil temperature is 50°C on the inlet side and 40°C on the outlet side, and using the specific heat data for turbine oil, the heat transfer load is approximately 95 KW with an average temperature difference of only 4.4°C. Even if we consider the heat transfer capacity required by the client, which is 320 kcal/m2h°C, the area needed would be around 60 m2. Moreover, it is doubtful whether such a capacity can actually be achieved due to pressure drop constraints.
This post was last edited by Heat Exchanger or Plate Heat Exchanger on 2022-5-18 at 10:00. Heat transfer capacity: ≥320 kcal/m2h℃; a slightly higher value can be chosen; otherwise, if the area is too large, the flow velocity between the plates will be too low. ≥For a heat exchanger model BR02K with a heat transfer rate of 350 kcal/m2h℃, an area of 20 square meters is sufficient; feel free to contact me if you need it. Specializing in plate heat exchangers. QQ10353666037