March, 1928] 



Electric Dairy Cold Storage 



19 



has been computed in Table 6. No recording device was used to obtain 

 this information exactly, but figures were based on 320 watts on 

 Farm No. 2, 355 on Farm No. 4, and 360 watts on Farm No. 1. 



On the average refrigeration was required 277 days or 6,654 hours 

 per year. Of this total the time that the equipment was actually 

 operating was 3,052 hours or 46.1%. An average of 1,032 kilowatt- 

 hours was used each year. 



The results on Farm No. 4, which has the largest room, indicate that 

 the equipment has adequate capacity for this type ■ of • work and is 

 operating on an almost ideal time schedule. An even better percent- 

 age of operation occurs in the case of the other farais where smaller 

 rooms are in use. 



The advantage given the refrigeration equipment on Farm No. 1 from 

 being jilaced in the basement is evident. In spite of the moist air 

 and floor conditions already mentioned, the equipment was operated 

 the least number of days, consumed the smallest amount of current 

 and shows the lowest factor in the percent of time of operation of any 

 of the three farms. It would appear, therefore, that a great advantage 

 may be secured by location in a naturally cool place, and this equip- 

 ment should show even better results when the difficulties already men- 

 tioned are corrected. Not every farm of course could advantageously 

 locate the cold storage in a basement without unduly increasing the 

 labor of handling the milk. 



Temperature Difference Factors. Table 7 shows the kilowatt hours 

 ])er cubic foot of room capacity per hour necessary to reduce the room 



