Zahra Razzaghpanah
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Zahra Razzaghpanah has a total of 5 co-authors. Here are the top co-authors by number of shared publications:
Nenad Sarunac
Mechanical Engineering and Engineering Science, UNC Charlotte, Charlotte, NC 28223, USA
3 shared publicationsAlireza Javanshir
1 shared publication- Alireza Javanshir
Faculty of Mechanical Engineering and Engineering Science, UNC Charlotte, Charlotte, NC 28223, USA
1 shared publication Javad Khalesi
1 shared publication- Nenad Sarunac
Univ. of North Carolina, Charlotte, NC (United States)
1 shared publication
Latest Publications
- 1 February 2020
- Published by Elsevier in International Journal of Heat and Mass Transfer
- Vol. 148, 119032
Natural convection heat transfer from a bundle of in-line heated circular cylinders immersed in molten solar salt
- 1 February 2020
- Published by Elsevier in International Journal of Heat and Mass Transfer
- Vol. 148, 119032
Natural convection heat transfer from a bundle of in-line heated circular cylinders immersed in molten solar salt
- 1 April 2019
- Published by Elsevier in Journal of Energy Storage
- Vol. 22, 176-187
Natural convection heat transfer from a horizontal row of finite number of heated circular cylinders immersed in molten solar salt
- 1 April 2019
- Published by Elsevier in Journal of Energy Storage
- Vol. 22, 176-187
Natural convection heat transfer from a horizontal row of finite number of heated circular cylinders immersed in molten solar salt
- Open Access
- 29 October 2017
- Published by MDPI AG in Sustainability
- Vol. 9 (11) , 1974
Thermodynamic Analysis of ORC and Its Application for Waste Heat Recovery
The analysis and optimization of an organic Rankine cycle (ORC) used as a bottoming cycle in the Brayton/ORC and steam Rankine/ORC combined cycle configurations is the main focus of this study. The results show that CO2 and air are the best working fluids for the topping (Brayton) cycle. Depending on the exhaust temperature of the topping cycle, Iso-butane, R11 and ethanol are the preferred working fluids for the bottoming (ORC) cycle, resulting in the highest efficiency of the combined cycle. Results of the techno-economic study show that combined Brayton/ORC cycle has significantly lower total capital investment and levelized cost of electricity (LCOE) compared to the regenerative Brayton cycle. An analysis of a combined steam Rankine/ORC cycle was performed to determine the increase in power output that would be achieved by adding a bottoming ORC to the utility-scale steam Rankine cycle, and determine the effect of ambient conditions (heat sink temperature) on power increase. For the selected power plant location, the large difference between the winter and summer temperatures has a considerable effect on the ORC power output, which varies by more than 60% from winter to summer.
- 29 October 2017
- Published by MDPI AG in Sustainability
- Vol. 9 (11) , 1974
Open AccessThermodynamic Analysis of ORC and Its Application for Waste Heat Recovery
The analysis and optimization of an organic Rankine cycle (ORC) used as a bottoming cycle in the Brayton/ORC and steam Rankine/ORC combined cycle configurations is the main focus of this study. The results show that CO2 and air are the best working fluids for the topping (Brayton) cycle. Depending on the exhaust temperature of the topping cycle, Iso-butane, R11 and ethanol are the preferred working fluids for the bottoming (ORC) cycle, resulting in the highest efficiency of the combined cycle. Results of the techno-economic study show that combined Brayton/ORC cycle has significantly lower total capital investment and levelized cost of electricity (LCOE) compared to the regenerative Brayton cycle. An analysis of a combined steam Rankine/ORC cycle was performed to determine the increase in power output that would be achieved by adding a bottoming ORC to the utility-scale steam Rankine cycle, and determine the effect of ambient conditions (heat sink temperature) on power increase. For the selected power plant location, the large difference between the winter and summer temperatures has a considerable effect on the ORC power output, which varies by more than 60% from winter to summer.