Effectiveness of orchard heaters effectivenessofo0723kepn Year: 1951 Fig. 7. Experimental coke heater (center). On either side are views of the radiation shields used in studies. Without shields this heater had a high radiant fraction; with shields, practically none. weighing the heaters individually before and after the run, using a specially designed portable scale unit (fig. 9). Only one kind of heater was tested in the main plot during any particular night. How- ever, occasional runs with the Hy-Lo 230A heaters were made during each of the several winters of the study, as a check again
Effectiveness of orchard heaters effectivenessofo0723kepn Year: 1951 Fig. 7. Experimental coke heater (center). On either side are views of the radiation shields used in studies. Without shields this heater had a high radiant fraction; with shields, practically none. weighing the heaters individually before and after the run, using a specially designed portable scale unit (fig. 9). Only one kind of heater was tested in the main plot during any particular night. How- ever, occasional runs with the Hy-Lo 230A heaters were made during each of the several winters of the study, as a check against possible changes in results from season to season. The results obtained with this heater were remarkably consist- ent from year to year. Vertical profiles of heating re- sponse. Figures 10 and 11 show the
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