|Heat tracing is applied to tanks and vessels to ensure that products are stored at the correct temperature. Usually the system is designed to compensate for losses through the thermal insulation although there are some cases where there is a positive heat input to raise the temperature of the vessel under defined conditions. The thermal insulation is the first line of defence against unknown, and often unquantifiable, losses from a bare surface.|
How heat is lost from a tank?
|There are three ways to lose heat from a tank or vessel.|
|Once the heat losses have been calculated you can determine the amount of cable required based on the heat losses and size of the tank. If the cicuit lenghs are less than 200m then parallel resistance self regulating or constant power heating cables are chosen which can be cut to length when required at site. When longer circuit lengths are required, series resistance cables should also be considered as these can normally be installed in a single circuit or supply point.|