Techno-economic analysis of high-temperature heat pumps with low-global warming potential refrigerants for upgrading waste heat up to 150 °C

2020 ◽  
Vol 226 ◽  
pp. 113488
Author(s):  
George Kosmadakis ◽  
Cordin Arpagaus ◽  
Panagiotis Neofytou ◽  
Stefan Bertsch
Keyword(s):  
Global Warming ◽  
High Temperature ◽  
Economic Analysis ◽  
Global Warming Potential ◽  
Waste Heat ◽  
Heat Pumps ◽  
Temperature Heat ◽  
Low Global Warming Potential

scholarly journals Optimisation of high-temperature heat pump cascades with internal heat exchangers using refrigerants with low global warming potential

Energy ◽  
2018 ◽  
Vol 165 ◽  
pp. 1248-1258 ◽  
Author(s):  
Adrián Mota-Babiloni ◽  
Carlos Mateu-Royo ◽  
Joaquín Navarro-Esbrí ◽  
Francisco Molés ◽  
Marta Amat-Albuixech ◽  
...  
Keyword(s):  
Global Warming ◽  
High Temperature ◽  
Heat Pump ◽  
Global Warming Potential ◽  
Heat Exchangers ◽  
Internal Heat ◽  
Temperature Heat ◽  
Low Global Warming Potential ◽  
High Temperature Heat Pump

Performance comparison of heat pumps using low global warming potential refrigerants with optimized heat exchanger designs

2020 ◽  
Vol 171 ◽  
pp. 114990 ◽  
Author(s):  
Byeongsu Kim ◽  
Sang Hun Lee ◽  
DongChan Lee ◽  
Yongchan Kim
Keyword(s):  
Global Warming ◽  
Heat Exchanger ◽  
Global Warming Potential ◽  
Heat Pumps ◽  
Performance Comparison ◽  
Low Global Warming Potential

Thermodynamic and economic analysis of the integration of high-temperature heat pumps in trigeneration systems

2019 ◽  
Vol 238 ◽  
pp. 516-533 ◽  
Author(s):  
Luca Urbanucci ◽  
Joan Carles Bruno ◽  
Daniele Testi
Keyword(s):  
High Temperature ◽  
Economic Analysis ◽  
Heat Pumps ◽  
Temperature Heat

scholarly journals Energy and Exergy Analysis of Low-Global Warming Potential Refrigerants as Replacement for R410A in Two-Speed Heat Pumps for Cold Climates

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5666
Author(s):  
Bo Shen ◽  
Moonis R. Ally
Keyword(s):  
Global Warming ◽  
Global Warming Potential ◽  
Air Conditioning ◽  
Exergy Analysis ◽  
Heat Pumps ◽  
Department Of Energy ◽  
Cold Climates ◽  
Pump Design ◽  
Oak Ridge ◽  
Low Global Warming Potential

Heat pumps (HPs) are being developed with a new emphasis on cold climates. To lower the environmental impact of greenhouse gas (GHG) emissions, alternate low global warming potential (GWP) refrigerants must also replace the exclusive use of the refrigerant R410A, preferably without re-engineering the mechanical hardware. In this paper, we analyze the performance of four low-GWP alternative refrigerants (R32, R452B, R454B, and R466A) relative to the conventional R410A and draw conclusions on the relative performances for providing heating in cold climates based on the Air-Conditioning, Heating, and Refrigeration Institute (AHRI) 210/240 standard for two-speed heat pumps. The simulations are carried using the Department of Energy, Oak Ridge National Laboratory (DOE/ORNL) Heat Pump Design Model (HPDM), a well-known heating, ventilation, and air conditioning (HVAC) modeling and design tool in the public domain and the HVAC research and development community. The results of the simulation are further scrutinized using exergy analysis to identify sources of systemic inefficiency, the root cause of lost work. This rigorous approach provides an exhaustive analysis of alternate low-GWP refrigerants to replace R410A using available compressors and system components, without compromising performance.

scholarly journals Evaluation of the Environmental Sustainability of a Stirling Cycle-Based Heat Pump Using LCA

Energies ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 4469
Author(s):  
Umara Khan ◽  
Ron Zevenhoven ◽  
Tor-Martin Tveit
Keyword(s):  
High Temperature ◽  
Heat Pump ◽  
Waste Heat ◽  
Heat Pumps ◽  
Heat Output ◽  
Environmental Footprint ◽  
Stirling Cycle ◽  
Impact Reduction ◽  
Temperature Heat ◽  
Very High

Heat pumps are increasingly seen as efficient and cost-effective heating systems also in industrial applications. They can drastically reduce the carbon footprint of heating by utilizing waste heat and renewable electricity. Recent research on Stirling cycle-based very high temperature heat pumps is motivated by their promising role in addressing global environmental and energy-related challenges. Evaluating the environmental footprint of a heat pump is not easy, and the impacts of Stirling cycle-based heat pumps, with a relatively high temperature lift have received little attention. In this work, the environmental footprint of a Stirling cycle-based very high temperature heat pump is evaluated using a “cradle to grave” LCA approach. The results for 15 years of use (including manufacturing phase, operation phase, and decommissioning) of a 500-kW heat output rate system are compared with those of natural gas- and oil-fired boilers. It is found that, for the Stirling cycle-based HP, the global warming potential after of 15 years of use is nearly −5000 kg CO2 equivalent. The Stirling cycle-based HP offers an environmental impact reduction of at least 10% up to over 40% in the categories climate change, photochemical ozone formation, and ozone depletion when compared to gas- and oil-fired boilers, respectively.

Transient simulation of heat pumps using low global warming potential refrigerants

2015 ◽  
Vol 21 (5) ◽  
pp. 658-665 ◽  
Author(s):  
Jiazhen Ling ◽  
Viren Bhanot ◽  
Abdullah Alabdulkarem ◽  
Vikrant Aute ◽  
Reinhard Radermacher
Keyword(s):  
Global Warming ◽  
Global Warming Potential ◽  
Heat Pumps ◽  
Transient Simulation ◽  
Low Global Warming Potential
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