Calculation of the heat loss of hot-storage tanks and calculation of the flat heating coil to compensate the heat loss (TANK)
TANK module package
Storage tanks might have to be heated to compensate for the cooler climatic conditions of the environment. In order to determine the required heat duty it is necessary to calculate the various types of heat losses from the surfaces of the tank.
TANK calculates the heat losses of uninsulated, insulated and heated storage tanks. The floor plan of the tank might be round or rectangular.
The heat losses through the bottom to the ground, through the wetted wall, through the dry wall or through the roof are determined separately. For the heat loss through the roof, the program considers also the heat loss due to radiation between the surface of the liquid and the roof.
Calculated is a flat heating coil (no tube bundle). The heat transfer from the heating coil to the storage medium is performed by 'natural convection'. Heating media might be water, saturated steam, thermal oils or heavy fuel oils. The physical properties are provided by the program or can be entered manually.
The TANK module package (comprising several VDI Heat Atlas modules and modules TANK, LUFT, N2, H2O, TOIL, HFO) performs the calculations by using specialized modules. A quick result is achieved with only few input values.
The calculations are based on the VDI Heat Atlas approaches for heat transfer, free convection, etc.