Please help calculate the heating area of the external heating coil. Thank you!
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I would like to ask everyone: there is a horizontal tank with dimensions DN3000×12000, and it is necessary to calculate the heating area. How should this be done? It would be great to have a calculation formula or a calculation program, thank you! The conditions are as follows: the water temperature must be maintained at 20°C, the amount of water stored should be 1/3 of the volume, the insulation material used is 60mm thick rock wool, the minimum ambient temperature is –10 degrees, a steam external heating coil is installed, and the steam pressure is 1.2 MPa at a temperature of 220 degrees. Please help calculate the heating area of the external heating coil.
This post was last edited by jintchinssen on 2012-3-19 at 13:32. Isn’t it sufficient to just calculate the surface area? Do we also need to take the expansion coefficient into account?
Please ask an expert for help. Thank you!
A simple heat calculation is mainly used to determine a heat transfer coefficient, OK?
This is a bit tricky. If it’s an internal coil, I can do the calculations for you; just send me a message
Reply to 2# scmslxy32602: Great resources
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I keep the water temperature at 20 degrees saja; why use steam for heating when hot water will do just as well?
Assuming this device is a buffer tank in continuous production, a normal flow rate of water is required; based on this, it can be calculated that: 1. The heat Q needed to maintain a temperature of 20°C is given by Q=CM△T. 2. It is recommended to use a semi-tube jacket on the outer surface (as it provides a higher heat transfer coefficient compared to a layered jacket); consult the steam-water heat transfer coefficient for semi-tube jackets (or calculate it based on the operating conditions), and then compute the jacket heat transfer area as S = Q/K△Tm. 3. To calculate the required steam flow rate, first determine the temperature t of the steam condensate based on production requirements or energy-saving goals; using this value, the steam flow rate W can be calculated as Q = Wr + CW△T + Q_loss. For heat loss calculations, refer to the heat transfer section in chemical engineering handbooks. 4. Calculate the diameter D of the jacket steam inlet pipe based on the steam flow rate, using the formula D² = 4Vs/3.14U
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