Author/Authors :
STANASILA, C. University “Politehnica” of Bucharest - Faculty of Applied Sciences, Romania , STANASILA, O. University “Politehnica” of Bucharest - Faculty of Applied Sciences, Romania , STEFANOIU, H. S. C. Gebarom Technologies S.R.L., Romania , STEFANOIU, D. University “Politehnica” of Bucharest - Faculty of Applied Sciences, Romania
Abstract :
Many industrial boilers (for example CR 9) use cold water and evacuate roast gases at temperatures upper 160^◦ C, whose warmth is dissipated in atmosphere. In this article, we present a new type of heat exchanger (named heat economizer) built in concrete, allowing to heat cold water of boilers just with useful recuperative heat of roast gases. The heat economizer is composed of more prefab elements (panels). First we will describe these elements, the mathematical gas-hydrodynamic model and afterwards theirs connections and the building of heat economizer. The use of the heat economizer increases the efficiency of boilers with until 7% and it also reduces the thermal pollution in the area.
