Considerations of the energy balance of an internal combustion engine and the recovery of heat lost through the cooling water

7th Modern Technologies in Industrial Engineering

工业技术（总论）

Faitar, C.^1 ; Nedelcu, A.T.^2 ; Buzbuchi, N.^1 ; Stan, L.^1 ; Dumitrache, L.M.^1

Maritime University of Constanta, Faculty of Naval Electromechanics, 104 Mircea cel Batran Street, Constanta

900663, Romania^1

Mircea Cel Batran Naval Academy, Faculty of Navigation and Naval Transport, 1 Fulgerului Street, Constanta

900218, Romania^2

关键词: Direct measurement;    Equivalent energy;    Gas recovery systems;    Maritime domains;    Operating regimes;    Outlet temperature;    System recovery;    Thermal balance;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/591/1/012088/pdf
DOI  :  10.1088/1757-899X/591/1/012088

学科分类：工业工程学

来源: IOP

【 摘 要 】

The thermal balance of an engine expresses the distribution of available heat, between the equivalent energy of effective mechanical work and the various losses. From the analysis of the thermal balance, it results if the thermal energy is used efficiently, corresponding to the economic work of the engine, helping to find and remove the causes that lead to the non-economical use of thermal energy. The thermal balance is useful in calculations for the design of the cooling system and the calculation of the exhaust gas recovery system. The heat flow lost through the cooling fluid is determined by measuring the flow of cooling water and also its inlet and outlet temperature. The heat flow lost through the exhaust gases is determined by the difference between the enthalpy of the exhaust gas and the enthalpy of the fresh entry load. The heat flow lost due to incomplete chemical burn is determined by analyzing the exhaust gases and determining the components that contain chemical energy. The parameters necessary for the thermal balance at a certain operating regime are obtained from direct measurements. The paper presents an analysis of thermal balance for ICE in the maritime domain and the possibilities of cooling system recovery for a ship engine of a tanker ship.