26 



New Hampshire Experiment Station [Bulletin 



.»3 



an increase in current consumption from the average of 7, to 11 kilowatt- 

 hours a day. Current consumption stood at approximately 7 kilowatt- 

 hours per day. An average room temperature of 46° was maintained. 

 Se-ptemher. Outside temperature averaged 64° for the month. The 

 second and fourth week over 70° was registered. The cold room tem- 

 perature averaged 43° dropping as low as 40° or less. Current con- 

 sumption averaged about 6 kwhs. per day. The brine tank was again 

 defrosted on the 16th. 



Fig. 13. 



October. October started with a week of warm weather when 75° 

 was registered but the average for the month was 55°. Cold room 

 temperatures averaged 40°. The current consumption remained at ap- 

 proximately 4 kwhs. a day. The milk load the first half of the month 

 was quite low but increased to a good size the last half. 



November. Sometime in November outside temperatures reach the 

 freezing point or lower, so that they may be utilized for holding the 

 dairv^ products until delivery. This may involve some risk, however, 

 unless care is taken that the milk and cream are not carried to the 

 other extreme and frozen. In some cases intermittent operation of the 

 refrigeration equipment may be carried on through the winter. The 

 location of the cold room and the quality of its insulation will deteraiine 

 whether this is practical. A well constructed cold room will as effec- 

 tively keep excessive cold out in the. winter as it will keep cold in in the 

 summer and therefore provides a very safe storage for the dairy pro- 

 ducts in cold weather, avoiding the necessity of carrying the milk and 

 cream to a slightly heated location to protect it from frost. 



The equipment was operated eleven days in November using about 

 5 kwhs. a day, maintaining 40° inside against 48° outside. _ The 

 weather then turned cool and the machine was stopped. Intermittent 

 operation was practiced through the winter. 



