. Commercial fisheries review. Fisheries; Fish trade. July 1955 COMMERCIAL FISHERIES REVIEW 25. Fig. 6 - Recording data during tests. FISH STICKS: The 1^-inch-thick packages (165 pounds) of fish sticks were lower- ed from a temperature of 65° to 0° F. within a period of 137 minutes (fig. 4). The total electrical energy re- quired was kilowatt- hours. The plate tempera- ture rose from -11° to ° F. (fig. 4). It then dropped very rapidly and remained at alow temperature, indicating a slow rate of heat transfer be- tween the plates and the prod- uct. The relatively slow rate of freezing wa
. Commercial fisheries review. Fisheries; Fish trade. July 1955 COMMERCIAL FISHERIES REVIEW 25. Fig. 6 - Recording data during tests. FISH STICKS: The 1^-inch-thick packages (165 pounds) of fish sticks were lower- ed from a temperature of 65° to 0° F. within a period of 137 minutes (fig. 4). The total electrical energy re- quired was kilowatt- hours. The plate tempera- ture rose from -11° to ° F. (fig. 4). It then dropped very rapidly and remained at alow temperature, indicating a slow rate of heat transfer be- tween the plates and the prod- uct. The relatively slow rate of freezing was caused by(l) the thickness of the package di-inch), (2) the relatively large air space between the top layer of fish slicks and the package wall, and (3) the insulation effect of the overwrapped package. Results given in table 1 show the freezer to be capable of lowering the temperature of 1,730pounds of packaged fish sticks from 65° to 0° F. in a 24-hour period. A total of kilowatt-hours would be required to lower the temperature of 1,000 pounds of fish sticks from 65° to 0° F. A com- parison of the results (table 1) indicates that the multiplate-compression freezer in terms of capacity and energy requirements is not as suitable for the freezing of packaged fish sticks as it is for the freezing of packaged fish fillets. APPLICATION OF DATA TO OTHER MULTIPLATE-COMPRESSION FREEZERS: 1. Freezing Rates: The freezing rates (figs. 1-4) would be similar for all mul- tiplate-compression freezers that are designed to freeze a full capacity load of 1-inch-thick packaged fillets in 60 minutes. 2. Energy Requirements: The energy requirements (table 1) would vary for other multiplate-compression freezers depending on (1) capacity of freezer, (2) type of refrigerant used, and (3) the type and number of compressors usedto supply the necessary refrigeration. The ratios between the kilowatt-hours required to freeze 1,000 pounds of the various products (table 1) would to a large
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