Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"low GWP"”.
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Detection of refrigerant leaks with focus on low-GWP mixtures
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-20 without embargo terms
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Flow condensation of low GWP refrigerants inside smooth and micro/nano-structured macro/mini channels
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-05-01
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Vapor-liquid equilibria of a low GWP refrigerant, R-1234ze(E), mixed with a POE lubricant
… densities of binary mixtures of an emerging low-GWP (Global Warming Potential) refrigerant, R-1234ze(E), and a polyol ester (POE) oil, RL68H, are measured. Data are presented for oil mass fractions ranging from 0 to 0.85 over a temperature range from -10 to 60°C, and the results are compared …
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Performance optimization of advanced vapor compression systems working with low-GWP refrigerants using numerical and experimental methods
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-05-01
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Impact of two potential policy options on atmospheric chemistry and climate: hydrogen economy and low-GWP alternatives to ozone depleting substances
… policy options, (1) hydrogen economy and (2) low-GWP (Global Warming Potential) alternatives to hydrofluorocarbons (HFCs) and hydrochlorofluorocarbons (HCFCs), on the composition of the atmosphere, on environment, on climate and on stratospheric ozone. This research is accomplished by using …
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Heat transfer performance and prediction of low global warming potential R134a refrigerant alternatives
… are phasing out high global warming potential (GWP) refrigerants such as R134a. Since many potential alternative refrigerants have flammability and cost concerns, minimizing system charge is critical. The condenser is typically responsible for 50% of the charge of a system; it is vital to have a …
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Oil retention and pressure drop of R1234yf and R134a with POE ISO 32 in suction lines
… R1234yf is a new alternative refrigerant of low global warming potential (GWP) which has been developed for automobile air conditioners as a drop-in replacement for R134a in order to meet European Union’s low GWP requirement. A quantitative comparison of oil retention and pressure drop …
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Modeling heat rejection in horizontal smooth round tubes and experimental validation for R1234ze(E), R134a and R32
… of liquid when the wall temperature drops below saturation temperature. Similarly, HTC below x=0 has been seen to decrease linearly before following Gnielinski correlation due to presence of vapor as seen in sight glass at the end of test section. The newly proposed model takes into account …
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Design and Lab Implementation of an Air Source Transcritical CO2 Heat Pump
… was developed to evaluate the performance of low-global-warming-potential (GWP) refrigerants for cold climate applications. A custom climate chamber was also constructed to simulate winter weather conditions typical of the northeastern United States. Both the TCHP and the chamber were fully …