How to design heating equipment for ethanol storage tanks
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I plan to heat the ethanol storage tank; initially, I intend to install coiled tubes outside the tank, with hot water circulating inside these coils. Consider a hot water tank, using a pump to circulate hot water into the coil. The heat released by circulating hot water can be calculated using Q=cm△t. But how is the energy of the ethanol storage tank calculated, given that the ethanol slurry inside it is non-flowing? Should we use Q=△t/(b/λ)? ? ? ? How should one determine an appropriate computing capacity? ?
Is your goal to heat or to maintain temperature?
Heating is necessary, especially in winter; in Changchun, where temperatures drop below -20 degrees, the temperature needs to be raised to around 30 degrees in order to prevent the solutes from precipitating.
How to use basic heat balance calculations? ?
The heat required for the ethanol in the tank can also be calculated using the formula Q=cm△t; it’s easy to determine this value for a temperature increase of 10 degrees from 20–30°C. The key factor is the heat exchange area; the heat transfer coefficient for the inner side (where there is no convective heat transfer), the tank wall, and the outer side needs to be estimated separately. If the effective area of the tank is smaller than the required heat exchange area, it is recommended to use coiled tubes inside the tank for heat exchange:victory:, or to add agitators to enhance heat transfer on the inner side. This post was last edited by magicake on 2008-1-24 at 10:46.]
Correct a spelling error: “It is recommended to add a coiled tube for heat exchange inside the tank.””
If we still use the formula Q=cm△t for calculation, the ethanol in the storage tank is at rest and not flowing; therefore, the mass flow rate m should be zero. So how should this value be determined? ? ? ? ?
The above formula can be understood as the heat required for the temperature of the medium in the storage tank to increase by △t. The unit of m is kg. It depends on how much time it takes to raise the temperature to the specified level to determine the power of the heating source
Generally, it depends on the size of the storage tank: if it’s small, an external coil is used; if it’s large, an internal coil is used. For even larger tanks, tube bundle heating is considered, and attention must be paid to proper grouping of the tubes. As for whether to use hot water or steam, steam is usually the preferred choice. . . . Additionally, the steam tube bundle should have a slope~