Abstract
The heat recovery system (HRS) uses the waste heat from the burner flues of an indirect-fired oven with heat exchangers. This hot flue gas may be used to heat one or two final zones of an oven. These zones would not require burners, giving a saving in capital and running costs. A proportion of the hot flue gas from each oven zone with a burner is diverted to a collection pipe along the top of the oven, and this delivers the hot flue gas to the heat recovery zone. The HRS zone is constructed with ducts above and below the oven band. The hot gases recovered from the burner flues are fed by the fan to the ducts. The fan is located on top of the oven at the end of the collection pipe. The ducts provide radiant heat and may also provide convection.
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