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...
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...
employed the group method of data handling (GMDH) approach to estimate the condensation FPD inside micro-channels based on their own measured data, and yielded a total AARE of 10.59%. Longo et al51. developed a predictive method for two-phase pressure drop in plate heat exchangers through the...
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...
15.A method for using a substitute refrigerant blend in a refrigeration system, comprising the steps of:obtaining a predetermined amount of one of the following refrigerants: R-502, R-404A, R-402A, R-402B, R-404A, R-408A, R-407C, R-502 and R-507A,substituting for the predetermined...
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 ...