Azzawyia Refinery is one of the biggest refineries in North West Libya, close to the city of Azzawyia. Due to obsolete design of the fired heaters of the refinery, their efficiency was low, flue gas temperature was high and the fuel consumption high. The GIT study provided for the installation of air preheaters in the main fired heaters, heating the incoming combustion air against the outgoing hot flue gases, thus saving energy substantially
