ENERGETIC REDEVELOPMENT OF THE BUILDINGS: THERMAL AND ECONOMIC COMPARATIVE ANALYSIS BEFORE AND AFTER THE SUBSTITUTION THROUGH CONDENSING BOILER

Abstract

In this paper, it is presented the comparison of the thermal and economical analysis between two installations: a traditional boiler without condensing and a modern modulated condensing boiler. The aim of this study is to demonstrate the optimization of an existing system used for heating of a building, by the substitution of the old traditional boiler with a premixed burner short flame condensing boiler. The condensing boiler is connected by a middle capacity boiler for the annual heating and annual production of sanitary warm water. We demonstrate through this comparison, that this substitution allows to keep the high annual efficiency, following constantly the thermal load, with an important annual reduction of the fuel consumption.