Significant thermal upgrade via cascade high temperature heat pump with low GWP working fluids

Y Dong, H Yan, R Wang - Renewable and Sustainable Energy Reviews, 2024 - Elsevier
High temperature heat pump is a promising solution for efficient high temperature heat
supply. However, the poor performance when it operates in large temperature lift hinders it …

Performance improvement strategies of R1234yf in vapor compression refrigeration system as a R134a replacement: A review

MZ Sharif, WH Azmi, MF Ghazali, M Samykano… - Journal of the Taiwan …, 2023 - Elsevier
R1234yf, a substitute for R134a, shares similar thermodynamic behavior and eco-friendly
properties with low global warming potential. However, performance and flammability issues …

[HTML][HTML] Comprehensive experimental evaluation of R1234yf-based low GWP working fluids for refrigeration and heat pumps

AKS Al-Sayyab, J Navarro-Esbrí… - Energy Conversion and …, 2022 - Elsevier
This work presents an experimental comparison for low GWP refrigerants used in vapour
compression cooling and heating systems. The study compares three lower global warming …

[HTML][HTML] Modelling and evaluation of a high-temperature heat pump two-stage cascade with refrigerant mixtures as a fossil fuel boiler alternative for industry …

J Navarro-Esbrí, A Fernández-Moreno, A Mota-Babiloni - Energy, 2022 - Elsevier
Abstract High-Temperature Heat Pump (HTHP) is becoming a feasible technology for
decarbonization, being proposed as an alternative to fossil fuel boilers in several industrial …

Thermodynamic performance of heat pump with R1234ze (E)/R1336mzz (E) binary refrigerant

H Hu, T Wang, Y Jiang, C Bi, B Zhang, S Fan… - Applied Thermal …, 2023 - Elsevier
In order to solve the temperature mismatch issue of cold and hot fluids in evaporation and
condensation processes for heat pump system, binary refrigerant R1234ze (E)/R1336mzz is …

Operating characteristics and performance evaluation of carbon dioxide heat pump driven liquid desiccant dehumidification systems: A comparative study

Q Cui, H Qu, B Sun, E Gao, X Zhang - Energy Conversion and Management, 2022 - Elsevier
Carbon dioxide heat pump driven liquid desiccant dehumidification takes perfect advantage
of the eco-friendly and excellent heating performance of the carbon dioxide heat pump …

Pinch point characteristics and performance evaluation of CO2 heat pump water heater under variable working conditions

Q Cui, C Wang, E Gao, X Zhang - Applied Thermal Engineering, 2022 - Elsevier
The pinch point in the gas cooler significantly impacts the optimal discharge pressure and
system performance of the CO 2 heat pump water heater, however the pinch point …

Experimental research on vapor-injected water source heat pump using R1234ze (E)

F Wei, B Wang, Z Cheng, M Cui - Applied Thermal Engineering, 2023 - Elsevier
As a low GWP alternative refrigerant to R134a, the direct use of R1234ze (E) in water source
heat pumps leads to significant performance degradation. Vapor injection combined with …

[HTML][HTML] Optimal refrigerant mixture in single-stage high-temperature heat pumps based on a multiparameter evaluation

A Fernández-Moreno, A Mota-Babiloni… - Sustainable Energy …, 2022 - Elsevier
High-temperature heat pumps (HTHPs) are compression systems that convert residual heat
to high-grade heat used in several industrial applications. Refrigerants for HTHPs are still …

Resource utilization of waste HFC-134a refrigerant by supercritical gasification method: A reactive molecular dynamic study

W Yu, C Liu, Q Li, L Xin, S Wang - Process Safety and Environmental …, 2022 - Elsevier
Effective treatment of HFCs (hydrofluorocarbons) waste refrigerants is of great significance
for reducing greenhouse gas emissions. In this study, the supercritical water gasification …