Publication: Simulation analysis of organic rankine cycle (ORC) operating with various type of refrigerants
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Date
2023-07-14
Authors
Karthikraj a/l Jayaraman
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Abstract
This thesis presents a study on wasted heat energy recovery in diesel engines using an Organic Rankine Cycle (ORC) integrated with simulation techniques in MATLAB. The research explores the feasibility and performance of the ORC system for recovering waste heat with various refrigerants and under various conditions. A MATLAB model is developed, incorporating thermodynamic equations and the performance characteristics of ORC components. Data collection and analysis validate the simulation model by comparing simulated results with experimental data from a real diesel engine setup and studies that has been done earlier. The findings show that R152 has the ability to produce the most shaft output power. R11 has the least power produced from the heat energy applied at 3.09kW while R152 is at 9.44kW. It is also found that R134a has the highest thermal efficiency among all other refrigerants. The study paves the way for
optimizing system design, exploring working fluids, and enhancing energy recovery processes. This study aims to determine harvested power from diesel engine waste heat and analyze ORC performance with different refrigerants for thermal efficiency. Comparative analysis of results and findings is also conducted.