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Performance Analysis of High Temperature Heat Pump Cycle for Industrial Process

Kim, Seon Tae and Hegner, Robert and Özuylasi, Göksel and Stathopoulos, Panagiotis and Nicke, Eberhard (2021) Performance Analysis of High Temperature Heat Pump Cycle for Industrial Process. In: Performance Analysis of High Temperature Heat Pump Cycle for Industrial Process. 13th International Conference on Applied Energy, 29 Nov - 5 Dec 2021, Vitual/Thailand.

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Abstract

High-temperature heat pumps (HTHP) that can supply heat at temperatures above 200 °C have a very large potential to enhance the energy efficiency of the industrial sector and reduce its CO2 emissions. In the current work, the thermodynamic performance of three different vapor compression cycles, which use R-718 (water) as a working medium, have been evaluated using a commercial process simulation tool (EBSILON Professional 15). All considered cycles use two-stage vapor compression with different intercooling strategies between the stages and the thermodynamic performances of those cycles have been investigated. The comparison studies on the coefficient of performance (COP) and heat supply temperatures have been conducted for all cycle architectures. With increasing temperature difference between a heat source and heat sink, ∆T, the COP values decreased as expected. The highest COP value was found for the cycle configurations where both compressors have the same pressure ratio (PR). The investigation on the HTHP capacities and exergy efficiency, ηexergy, with optimized PR has also been carried out. Both COP and ηexergy values increased with decreasing ∆T and the intercooler cycles with heat exchanger showed higher COP and ηexergy than the spray injection cycle.

Item URL in elib:https://elib.dlr.de/146568/
Document Type:Conference or Workshop Item (Speech)
Title:Performance Analysis of High Temperature Heat Pump Cycle for Industrial Process
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Kim, Seon TaeSeon.Kim (at) dlr.dehttps://orcid.org/0000-0002-4388-3996
Hegner, RobertRobert.Hegner (at) dlr.deUNSPECIFIED
Özuylasi, GökselGoeksel.Oezuylasi (at) dlr.deUNSPECIFIED
Stathopoulos, PanagiotisPanagiotis.Stathopoulos (at) dlr.deUNSPECIFIED
Nicke, EberhardEberhard.Nicke (at) dlr.deUNSPECIFIED
Date:2021
Journal or Publication Title:Performance Analysis of High Temperature Heat Pump Cycle for Industrial Process
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Accepted
Keywords:High temperature heat pump, Industrial process, Vapor compression cycle, R-718 (water), Thermodynamic analysis.
Event Title:13th International Conference on Applied Energy
Event Location:Vitual/Thailand
Event Type:international Conference
Event Dates:29 Nov - 5 Dec 2021
HGF - Research field:Energy
HGF - Program:Materials and Technologies for the Energy Transition
HGF - Program Themes:High-Temperature Thermal Technologies
DLR - Research area:Energy
DLR - Program:E SP - Energy Storage
DLR - Research theme (Project):E - Low-Carbon Industrial Processes
Location: Zittau
Institutes and Institutions:Institute of Low-Carbon Industrial Processes > High-Temperature Heat Pumps
Institute of Low-Carbon Industrial Processes
Deposited By: Kim, SeonTae
Deposited On:16 Dec 2021 16:42
Last Modified:16 Dec 2021 16:42

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