... be operated only if the cooling capacity was small. The study's purpose was to reduce the compressor pressure ratio (PR) to increase the COP; the system was evaluated using thermodynamic fundamentals, followed by experimental work under varied operating conditions. The COP improved by 35.2% and reached 40...

... enhancement factor, EF v , is proposed, which can be justified based on lumped capacitance arguments. When coupled with the thermodynamic coefficient of performance, EF v allows a simple comparison that relates thermal performance, system input needs, and system size simultaneously. Using these metrics...

... predictions and the experimental results. aerospace engineering error analysis evaporation heat transfer membranes thermodynamics The average temperature on spacesuit surfaces during outer space missions may, with the exposure to solar radiation, rise up to 120 ° C . A well-designed...

.... Here, we report an initial thermodynamic optimization of the refrigeration system design. In order to hold the outlet quality of the fluid leaving the evaporator to less than approximately 20%, in order to avoid reaching critical heat flux, the refrigeration system design is dramatically different from...

... to the movement of pressure waves. In this work, the working procedure and wave diagram of WRR are investigated thoroughly. Based on this, a novel WRR thermodynamic analysis model has been established and validated by experiments. This performance assessment model shows the main contributing factors of expansion...

... by using physiological data taken on human subjects over a wide range of ambient water temperatures. Corresponding enthalpy and electrical power measurements were used as the basis of a thermodynamic analysis. The DTPS maintained skin and body core temperatures within safe and functional ranges...