Vapor Pressure of Aqueous Solutions of Ethylene Glycol, Glycerol, and Triethylene Glycol as Working Fluids of Frost-Free Air-Source Heat Pumps at 253 to 323 K
Abstract:Organic solutions are commonly used in frost-free air-source
heat
pumps (FFASHPs) due to their lower corrosiveness and cost-effectiveness.
However, there is a shortage of vapor pressure data for organic solutions,
which is crucial for their application in FFASHPs, particularly at
subzero temperatures. This paper developed an apparatus with low leakage
and good insulation for measuring vapor pressure using the static
method and proposed experimental procedures that included zero setting,
cleaning, drying, leak … Show more
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