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Development of Test System for ICE Exhaust Gas Energy Recovery Based on Rankine Cycle

Author: QinHao
Tutor: GaoWenZhi
School: Tianjin University
Course: Power Machinery and Engineering
Keywords: Internal combustion engine Exhaust gas energy Rankine cycle Waste heat recovery
CLC: TK427
Type: Master's thesis
Year: 2010
Downloads: 141
Quote: 1
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Abstract


Increasing car ownership caused huge consumption of oil resources , and improve the efficiency of the internal combustion engine before new energy vehicles in the car instead of the traditional internal combustion engine as a power , reduce oil consumption , an important way to alleviate the energy crisis . Cylinder combustion technology has improved , many scientists have begun to study the recovery of the internal combustion engine exhaust energy , this part of energy accounting for fuel combustion emit one-third of the calories . The use of the Rankine cycle is a more effective way to recover the exhaust energy . Some foreign companies and research institutions have been related to the trial , the domestic theory in this area is still in the research stage . In this paper, based on Rankine cycle exhaust energy recovery test system is developed on the basis of a diesel engine . First, the principle and process of studying the Rankine cycle , deduced the internal combustion engine - steam turbine combined cycle calculation formula , derived determinants of the combined cycle efficiency . GT-POWER software to test the working process of the internal combustion engine simulation model is established by experimental validation , the model has sufficient accuracy , on this basis, the rise of the exhaust back pressure on the engine performance , to guide the heat exchanger designs . Its efficiency analysis of the Rankine cycle parameters by thermodynamic knowledge to the test with an internal combustion engine exhaust temperature and flow parameters and test conditions , the selected test labor quality water and determine the Rankine cycle parameters. By the relationship of the amount of steam production and the heat exchanger area determines the temperature at the outlet of the exhaust gas in the heat exchanger , thereby determining the steam flow . The evaporator design constraints to determine the the the reasonable design steps and design a preheater , and evaporation and superheater . For the guidance of the internal combustion engine operating conditions change , the exhaust energy recovery trial to study the performance of the heat exchanger with the exhaust gas temperature and flow parameter variation and MATLAB program calculated the amount of exhaust gas temperature and flow steam production . Appropriate choice of test equipment , test system is constructed based on the the Rankine cycle internal combustion engine exhaust energy recovery . Through pressure tests proved the safety of the test system . Test to prove that the heat exchanger design steam production capacity can reach steam turbine to start properly , the test system development is essential for the success .

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CLC: > Industrial Technology > Energy and Power Engineering > Internal combustion engine > Diesel engine > Run test
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