EXERGY EFFICIENCY OF A RADIATOR HEATING SYSTEM

Abstract

This paper wants to answer the following question– what is the change of exergy for a given radiator heating system? For this purpose a mathematical model in Matlab software was made and was simulated in Simulink. As a variable in the model is used environment temperature, as constants: -Indoor temperature (in this paper is used t u=20 0C) -Geometrical and construction characteristics of the model (house) -Radiator type(constant exponent for the radiator heating power for different temperature differences between the radiator’s mean temperature and the room temperature) The model allows the change of the next parameters between simulations: -To change a type heating fluid (in this paper is used exclusively warm water) -Difference of temperature between radiator’s input and output -A middle temperature of heating fluid