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| Experimental Study on Organic Rankine Cycle Integrated with Latent Thermal Energy Storage Driven by Waste Heat of Internal Combustion Engines |
| DOI：10.13949/j.cnki.nrjgc.2021.06.001 |
| Key Words:waste heat recovery organic Rankine cycle（ORC） internal combustion engine fluctuating heat source latent thermal energy storage |
| Author Name | Affiliation | | LI Zhi, YU Xiaoli, WANG Lei, GAO Qi, LU Yiji, HUANG Rui | 1.College of Energy Engineering, Zhejiang University, Hangzhou 310027, China
2.Ningbo C.S.I. Power & Machinery Group Co., Ltd., Ningbo 300350, China |
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| Abstract:In order to overcome the fluctuation and improve the utilization rate of exhaust waste heat, a novel organic Rankine cycle（ORC） system integrated with latent thermal energy storage was proposed and a test rig was established. The thermodynamic and dynamic performance of the proposed combined system were experimentally investigated under steady and unsteady operating conditions. The results indicate that the average net power output, thermal efficiency and recovering rate of waste heat are about 3.43kW, 12.7% and 40.1% respectively with the evaporating pressure of 0.75MPa, when the average temperature and mass flow rate of exhaust are 342℃ and 0.142kg/s for certain steady condition of the internal combustion engine(ICE). Under the step change operating condition of the ICE, the working fluid outlet temperature, evaporating pressure and superheat degree of working fluid all show a trend of rapid decline. The results also illustrate that the proposed system possesses ability to resist the small disturbance of heat source, and the latent thermal energy storage can release heat to the exhaust to prolong the time of safe operation when the disturbance of heat source is large. |
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