Thermo-economic analysis of using an organic Rankine cycle for heat recovery from both the cell stack and reformer in a PEMFC for power generation

A thermodynamic and economic comparative analysis are presented for waste heat recovery (WHR) from the heavy oil production with steam-assisted gravity drainage (SAGD) process employing organic Rankine cycle (ORC) and Kalina cycle (KC). The liquefied natural gas (LNG) cold energy is employed as the cold source. Thus, a combined cooling heating and power system is proposed. The effect of key parameters on thermodynamic performance is investigated. The results showed that increasing the turbine inlet temperature (TIT), ORC is more appropriate for WHR in SAGD process than KC, but KC provides better energy use and exergy efficiency, while the reverse situation occurs when the evaporation pressure is increased. The compression ratio has little effect on the cold exergy recovery efficiency of the refrigeration cycles. In addition, the total exergy destruction and the total WHR efficiency in the combined SAGD/KC are slightly higher than these in the combined SAGD/ORC. Moreover, for the TIT below 180 °C and the evaporation pressure above 6 MPa, the SAGD/KC can obtain more energy return on investment (EROI) than SAGD/ORC. The results obtained through economic analysis show that the use of the SAGD/ORC is more economical. Through the thermos-economic comparison of the two combined systems, it helps to choose different combined cycles according to the different actual operation, which can facilitate the future engineering applications.

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Thermodynamic and Thermo-economic Analysis of Integrated Organic Rankine Cycle for Waste Heat Recovery from Vapor Compression Refrigeration Cycle

Energy Procedia ◽

10.1016/j.egypro.2017.12.670 ◽

2017 ◽

Vol 143 ◽

pp. 192-198 ◽

Cited By ~ 10

Author(s):

Muhammad Asim ◽

Michael K.H. Leung ◽

Zhiqiang Shan ◽

Yingying Li ◽

Dennis Y.C. Leung ◽

...

Keyword(s):

Economic Analysis ◽

Heat Recovery ◽

Waste Heat Recovery ◽

Waste Heat ◽

Organic Rankine Cycle ◽

Rankine Cycle ◽

Refrigeration Cycle ◽

Vapor Compression ◽

Vapor Compression Refrigeration Cycle ◽

Vapor Compression Refrigeration

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Thermo-economic analysis based on objective functions of an organic Rankine cycle for waste heat recovery from marine diesel engine

Energy ◽

10.1016/j.energy.2018.06.047 ◽

2018 ◽

Vol 158 ◽

pp. 343-356 ◽

Cited By ~ 26

Author(s):

Yilin Zhu ◽

Weiyi Li ◽

Guanzhong Sun ◽

Haojie Li

Keyword(s):

Diesel Engine ◽

Economic Analysis ◽

Heat Recovery ◽

Waste Heat Recovery ◽

Waste Heat ◽

Organic Rankine Cycle ◽

Rankine Cycle ◽

Marine Diesel Engine ◽

Objective Functions ◽

Marine Diesel

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Optimization of Organic Rankine Cycle Waste Heat Recovery for Power Generation in a Cement Plant via Response Surface Methodology

International Journal of Technology ◽

10.14716/ijtech.v6i6.1695 ◽

2015 ◽

Vol 6 (6) ◽

pp. 938 ◽

Cited By ~ 3

Author(s):

Hendi Riyanto ◽

Sigit Yoewono Martowibowo

Keyword(s):

Power Generation ◽

Response Surface Methodology ◽

Response Surface ◽

Heat Recovery ◽

Waste Heat Recovery ◽

Waste Heat ◽

Organic Rankine Cycle ◽

Rankine Cycle ◽

Cement Plant

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Design of an Organic Rankine Cycle for Waste Heat Recovery From a Portable Diesel Generator

Volume 4: Energy Systems Analysis, Thermodynamics and Sustainability; Combustion Science and Engineering; Nanoengineering for Energy, Parts A and B ◽

10.1115/imece2011-65489 ◽

2011 ◽

Cited By ~ 1

Author(s):

Frederick J. Cogswell ◽

David W. Gerlach ◽

Timothy C. Wagner ◽

Jarso Mulugeta

Keyword(s):

Power Generation ◽

Heat Exchanger ◽

Heat Recovery ◽

High Speed ◽

Waste Heat Recovery ◽

Waste Heat ◽

Organic Rankine Cycle ◽

Rankine Cycle ◽

Diesel Generator ◽

Air Conditioners

A 5-kW Organic Rankine Cycle (ORC) was designed for mobile 60-kW diesel engine waste heat recovery applications to provide additional electricity for powering air conditioners. The ORC uses a non-flammable, near-zero-global-warming-potential fluid (Novec649) in a supercritical cycle. The system conceptual design and some observations on the component specification are described. The system will utilize an advanced oil-free high speed direct drive turbine. The proposed power generation module has a volume of ∼3 ft3 and contains the turbine, generator, pump, recuperator, and electrical components. The heat rejection heat exchanger is located on the power generation module in a configuration similar to mini-split air conditioners. The heat recovery heat exchanger (supercritical heater) is attached to the diesel generator and placed in series before the OEM muffler. The supercritical heater must be carefully designed to prevent the refrigerant from overheating, while still maintaining a high effectiveness.

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