Results 61 to 70 of about 2,030 (213)
Asia-Pacific Journal of Chemical Engineering, Volume 21, Issue 2, March/April 2026.ABSTRACT The growing impacts of climate change and energy scarcity demand environmentally sustainable refrigeration solutions. This study investigates eco‐friendly refrigerants (R152a, R290 and R600a) and their optimized ternary mixture as alternatives to R134a. Four blend compositions were analysed using experimental testing and REFPROP 10.0 modelling
M. Periyasamy, P. Senthilkumar
wiley +1 more source
Asia-Pacific Journal of Chemical Engineering, Volume 21, Issue 1, January/February 2026.ABSTRACT This study investigates binary zeotropic mixtures of R744 (CO₂) blended with eco‐friendly refrigerants for medium‐high temperature heat pumps, comparing them with conventional R744/R134a systems. All mixtures meet 60–80 K temperature lift requirements under low‐temperature conditions. A genetic algorithm optimized system parameters using fixed
Lingling Sun +6 more
wiley +1 more source
Journal of Nanomaterials, Volume 2019, Issue 1, 2019., 2019 In the process of adsorption and separation of fluid molecules on the solid surface of porous nanomaterials, the mutual transformation of thermal energy and surface energy can improve the heat absorption and energy utilization efficiency of circulating working medium.
Qiang Wang +5 more
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Unified Modeling Suite for Two-Phase Flow, Convective Boiling and Condensation in Macro-and Micro-Channels [PDF]
, 2014 This paper was presented at the 4th Micro and Nano Flows Conference (MNF2014), which was held at University College, London, UK. The conference was organised by Brunel University and supported by the Italian Union of Thermofluiddynamics, IPEM, the ...
4th Micro and Nano Flows Conference (MNF2014) +2 more
core
Energy benefit assessment of a Water Loop Heat Pump system integrated with a CO2 commercial refrigeration unit [PDF]
, 2017 The improvement of energy efficiency and the use of environmentally friendly working fluids are key elements of current European policies. Supermarkets are intensive energy consumers and approximately the 40% of their annual energy consumption is for ...
Cortella, Giovanni +3 more
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Flow visualization of R1234ze(E) in a 0.643 mm microchannel tube
International Journal of Heat and Mass Transfer, 2019 Abstract This paper presents the discussion of regimes of two-phase flow of R1234ze(E) in a 24-port microchannel tube with average hydraulic diameter of 0.643 mm, obtained by visualization. The experiment is conducted in the same facility in the previous work for R32 (Li and Hrnjak, 2019). The conditions cover mass flux from 50 to 225 kg m−2 s−1. The
Houpei Li, Pega Hrnjak
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Case Studies in Thermal Engineering, 2023 The ground source heat pump (GSHP) system is receiving increasing interest because of its potential to increase energy efficiency and thus reduce greenhouse gas emissions.
Fang Wang, Tian You
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Energy Science &Engineering, Volume 13, Issue 5, Page 2389-2400, May 2025.ABSTRACT This paper proposes an ejector‐expansion refrigeration cycle (EERC) with two evaporating temperatures to recover partial expansion work and greatly reduces the throttling loss of the other expansion valve connected to the evaporator compared with the conventional bievaporator refrigeration cycle (CBEC).
Xiaoqin Liu, Weibin Wang, Jianyong Wang
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Effect of Condenser Fouling on Performance of Vapor Compression Refrigeration System
Journal of Thermodynamics, Volume 2015, Issue 1, 2015., 2015 Effect of condenser fouling is evaluated on the performance of a vapour compression system with refrigerants HFO1234yf and HFO1234ze as an alternative to HFC134a. The condenser coolant temperature has been varied between 35 and 40°C to evaluate the effect of fouling at different condenser temperatures.
Naveen Solanki +3 more
wiley +1 more source
Applied Sciences, 2021 This study provides a global warming impact analysis of environmentally friendly refrigerants used as replacements for R134a and R245fa. R290, R1234yf, R1234ze(E), R513A and R450A are considered as refrigerants to replace R134a in medium temperature ...
Morteza Ghanbarpour +3 more
doaj +1 more source