Abstract
Due to the low efficiency and depletion of fossil fuel, it becomes mandatory to integrate two or more cycle in a plant to meet the demand of electricity by general public. The low-temperature organic Rankine cycle is the most promising cycle among all the other thermodynamic cycles to operate on a low-temperature heat sources such as solar, geothermal, waste heat of engine etc for generating an extra power to meet the demand and reduce the high-temperature emissions in environment. This paper investigates the performance of a sub-critical organic Rankine cycle individually using dry, wet and isentropic fluid through first and second law efficiency. The screening of seven working fluids is done based on its physical, chemical and thermal properties. The heat source is a waste heat of recovery generator ranging from 75–85 °C. The result reveals that critical temperature is highly dependent on heat source condition and affects the performance of ORC.
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Abbreviations
- T :
-
Temperature
- P :
-
Pressure
- M :
-
Molecular Mass
- ñ :
-
Molar flow rate
- ĉp :
-
Specific heat at constant pressure
- η :
-
Efficiency
- ṁ :
-
Mass flow rate
- h :
-
Specific enthalpy
- Q :
-
Heat
- W :
-
Work
- ODP:
-
Ozone depletion potential
- GWP:
-
Global warming potential
- cr:
-
Critical temperature
- NBP:
-
Normal boiling point
- i :
-
Index
- p :
-
Pump
- E :
-
Expander
- wf:
-
Working fluid
- s :
-
Saturation
- Exe:
-
Exergy
- G in :
-
Gas in
- G ex :
-
Gas exit ambient
- o :
-
Ambient
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Acknowledgement
This work was sponsored by Indira Gandhi Delhi Technical University for Women under IGDTUW Research Fellowship Scheme (JRF/SRF).
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Madan, K., Singh, O.K. (2021). Performance Augmentation of Low-Temperature Sub-critical Organic Rankine Cycle Using First and Second Law-Based Analysis. In: Muzammil, M., Chandra, A., Kankar, P.K., Kumar, H. (eds) Recent Advances in Mechanical Engineering. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-15-8704-7_28
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DOI: https://doi.org/10.1007/978-981-15-8704-7_28
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