TY - GEN
T1 - Hydrofluoroolefin Refrigerants and an Organic Solvent as an Alternative to Ammonia-Water Mixtures in Diffusion Absorption Cooling Systems
AU - Gurevich, Bella
AU - Zohar, Amir
N1 - Publisher Copyright:
© 2025, Avestia Publishing. All rights reserved.
PY - 2025/1/1
Y1 - 2025/1/1
N2 - This study explores the feasibility of Hydrofluoroolefin (HFO) refrigerants, specifically 2,3,3,3-Tetrafluoropropene (R1234yf) and 1-Chloro-3,3,3-trifluoropropene (R1233zd(E)), as working fluids in Diffusion Absorption Refrigeration (DAR) systems, in conjunction with Dimethylacetamide (DMAC). Recognizing the low Global Warming Potential (GWP) of HFOs, this research aims to evaluate their performance. Experimental investigations were conducted to determine the thermodynamic properties of the HFO-DMAC binary mixtures, including pressure-temperature-concentration relationships and enthalpy-temperature-concentration data at equilibrium. Utilizing these experimentally derived properties, the Coefficient of Performance (COP) of the DAR cycle for each HFO-DMAC working pair was calculated. The results demonstrate that HFO-based DAR systems have the potential to operate at lower generator temperatures compared to conventional ammonia-water systems. This characteristic suggests that these systems can be effectively driven by lower-temperature heat sources, such as waste heat or solar energy, thereby enhancing their energy efficiency and environmental sustainability. .
AB - This study explores the feasibility of Hydrofluoroolefin (HFO) refrigerants, specifically 2,3,3,3-Tetrafluoropropene (R1234yf) and 1-Chloro-3,3,3-trifluoropropene (R1233zd(E)), as working fluids in Diffusion Absorption Refrigeration (DAR) systems, in conjunction with Dimethylacetamide (DMAC). Recognizing the low Global Warming Potential (GWP) of HFOs, this research aims to evaluate their performance. Experimental investigations were conducted to determine the thermodynamic properties of the HFO-DMAC binary mixtures, including pressure-temperature-concentration relationships and enthalpy-temperature-concentration data at equilibrium. Utilizing these experimentally derived properties, the Coefficient of Performance (COP) of the DAR cycle for each HFO-DMAC working pair was calculated. The results demonstrate that HFO-based DAR systems have the potential to operate at lower generator temperatures compared to conventional ammonia-water systems. This characteristic suggests that these systems can be effectively driven by lower-temperature heat sources, such as waste heat or solar energy, thereby enhancing their energy efficiency and environmental sustainability. .
KW - Diffusion absorption systems
KW - Hydrofluoroolefin refrigerants
KW - Vapor liquid equilibrium
KW - binary solutions
UR - https://www.scopus.com/pages/publications/105021828989
U2 - 10.11159/htff25.107
DO - 10.11159/htff25.107
M3 - Conference contribution
AN - SCOPUS:105021828989
SN - 9781990800603
T3 - Proceedings of the World Congress on Mechanical, Chemical, and Material Engineering
BT - Proceedings of the 11th World Congress on Mechanical, Chemical, and Material Engineering, MCM 2025
A2 - Qiu, Huihe
A2 - Zhang, Yuwen
A2 - Iasiello, Marcello
PB - Avestia Publishing
T2 - 11th World Congress on Mechanical, Chemical, and Material Engineering, MCM 2025
Y2 - 19 August 2025 through 21 August 2025
ER -