Drop-in tests were conducted using R290/R32 (31:69) mixture in an ice-cream maker for possible replacement of R-502 and R-404A. Optimum refrigerant charge and TEV opening were obtained through a series of experiments. At the standard outdoor condition (35℃ DT, 24℃ WT), the time requ...
Replacement to R-454C increased the ice ball formation time by 14% and decreased the amount of ice production per day by 8%. The reason may be attributed to a larger pressure lift, which leads to smaller refrigerant mass flow rate. Ice production was possible even at the harsh environment...
R. Experimental study of R452B and R454B as drop-in replacement for R410A in split heat pumps having tube-fin and microchannel heat exchangers. Appl. Therm. Eng. 5(204), 117930 (2022). Article Google Scholar Chen, Y., Shen, C., Shi, M. & Peterson, G. P. Visualization study ...
R-404A, which had long been used as the refrigerant of a unitary ice maker, has to be replaced due to global warming. In the present study, drop-in tests were conducted for long-term alternative refrigerants R-455A and R-454C on the ice maker of 100 kg/day capacity. Five samples ...
The performance characteristics of the system working with R-454C and R-404A also have been compared to examine the system performance after replacement has been occurred. Fig. 1 presents the P-h diagram for both R-404A and R-454C. It's clear from the figure that, the critical pressure...
diameters up to 6.25 mm. In order to attain more accurate predictions, the analyzed data were allocated to four subdomains, depending on the vapor and liquid Reynolds numbers. A total number of 7115 data points analyzed for the condensation FPD were predicted with an AARE of 23.3% by this ...
This comparison provides a preliminary assessment of using the new-generation hydrofluoroolefin R1233zd as a replacement for R245fa due to environmental reasons. In addition, the experimental results in this study were compared with the predicted values from the correlations developed based on ...
This blend has recently been assigned refrigerant number R-404A by the Ameri... WK Snelson,J Linton,AR Triebe,... 被引量: 14发表: 1995年 A 1200-V 600-a silicon-carbide half-bridge power module for drop-in replacement of an IGBT IPM A 1200-V, 600-A silicon carbide (SiC) JFET ...