Open AccessStudy on the effect of heat exchange tube structure on waste heat recovery capacity of the internal combustion engine in the freshwater distillation system
Author(s) -
Dien Vu Minh,
Vu Quang,
Tien Nguyen Duy,
Le Manh Toi
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1150/1/012006
Subject(s) - waste heat recovery unit , internal combustion engine cooling , waste heat , stirling engine , external combustion engine , internal combustion engine , exhaust gas recirculation , heat recovery ventilation , waste management , environmental science , combustion chamber , heat transfer , heat exchanger , combustion , heat engine , diesel engine , exhaust gas , mechanical engineering , engineering , thermodynamics , automotive engineering , chemistry , physics , organic chemistry
In the Internal Combustion Engine (ICE) working operation, fuel is fed into the combustion chamber, where it is burnt in air to convert the chemical energy of fuel into heat according to the first law of thermodynamics. However, the amount of energy transformed into actual power is only 21-33% and 25-40% for gasoline engines and diesel engines, respectively. Consequently, about two-thirds of the remaining energy is lost due to the heat transfer to the surrounding environment, in which the heat energy removed by the exhaust occupies the largest proportion (about 30-35%). Therefore, utilizing the regenerative heat from the exhaust gases is a potential solution to improve the ICE’s efficiency. This paper presents the simulation results of the effect of heat exchange tube structure on waste recovery capacity in the system, which utilizes the heat of exhaust gases and cooling water of ICE based on Ansys Fluent. In addition, the boundary conditions, the flow, and exhaust temperature are determined by simulating the engine’s working process using AVL-Boost. This research shows that the heat utilization efficiency of exhaust energy can be achieved up to 34%, corresponding to a reasonable structure. This research’s study outcomes are the foundation to implement the complete design of the heat waste recovery system of ICE.