Typically more than 60% of the energy input to an Arabic bread tunnel oven is wasted as heat in the chimney stack. In this bakery, the temperature of the combustion gases from the oven at the inlet to the chimney has been measured at 600°C.
An eco-innovative heat recovery measure was introduced, where the waste heat is utilized to produce saturated steam, which in turn will operate an absorption chiller. This will replace electricity needed to operate the vapor compression type AC during night.