Using Heat Pumps to Improve the Efficiency of Combined-Cycle Gas Turbines

Vitaly Sergeev, Irina Anikina and Konstantin Kalmykov
Additional contact information
Vitaly Sergeev: Higher School of Nuclear and Heat Power Engineering, Institute of Energy, Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Russia
Irina Anikina: Higher School of Nuclear and Heat Power Engineering, Institute of Energy, Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Russia
Konstantin Kalmykov: Higher School of Nuclear and Heat Power Engineering, Institute of Energy, Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Russia

Energies, 2021, vol. 14, issue 9, 1-26

Abstract: This paper studies the integration of heat pump units (HPUs) to enhance the thermal efficiency of a combined heat and power plant (CHPP). Different solutions of integrate the HPUs in a combined-cycle gas turbine (CCGT) plant, the CCGT-450, are analyzed based on simulations developed on “United Cycle” computer-aided design (CAD) system. The HPUs are used to explore low-potential heat sources (LPHSs) and heat make-up and return network water. The use of HPUs to regulate the gas turbine (GT) intake air temperature during the summer operation and the possibility of using a HPU to heat the GT intake air and replace anti-icing system (AIS), over the winter at high humidity conditions were also analyzed. The best solution was obtained for the winter operation mode replacing the AIS by a HPU. The simulation results indicated that this scheme can reduce the underproduction of electricity generation by the CCGT unit up to 14.87% and enhance the overall efficiency from 40.00% to 44.82%. Using a HPU with a 5.04 MW capacity can save $309,640 per each MW per quarter.

Keywords: heat pump unit; energy efficiency; vapor compression; thermal power plant; low-potential heat source; CCGT-CHPP (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

Downloads: (external link)
https://www.mdpi.com/1996-1073/14/9/2685/pdf (application/pdf)
https://www.mdpi.com/1996-1073/14/9/2685/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:14:y:2021:i:9:p:2685-:d:550078

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().