April, 1931 J Agricultural Research in N. H., 1930 

 Electric Laundry Equipment Tested 



Since no group of electrical appliances is in such general use as the 

 equipment for laundry work, special studies of current consumption 

 and other factors were made by W. T. Ackerman on the seven elec- 

 trical experimental farms. 



All washing machines and flat-irons, both old and new, were con- 

 sidered essential equipment and performed to the satisfaction of all 

 users from the standpoints of efficiency, cost of operation, character of 

 work done and freedom from mechanical or electrical difficulties. 



Ironing machines proved suc- 

 cessful and desirable to three 

 users and not essential in the 

 fourth case. 



Washing machines consumed 

 an average of 30 Kwhs. per 

 year, with a corresponding aver- 

 age operating cost of $2.94. Es- 

 timated depreciation and current 

 charges together amounted to 

 $21 per year. 



The current used by flat irons 

 averaged 83 Kwhs. per year 

 with a corresponding average 

 operating cost of $3.28. 



Ironing machines were found 

 to use an average of 109 Kwhs. 

 per year with a corresponding 

 current cost of $4.51. Depreci- 

 ation costs were estimated to ex- 

 ceed current costs about three to 

 one on this appliance. Ironing 

 machines practically eliminate 

 the use of hand-irons where the 

 two are used together, for the 

 reason that the larger machine 

 will do more work in one-third 



Electric flat irons on the experimental 

 farms used an average of $3.28 worth of 

 current per year. Four of the farms 

 tried electric ironing machines. 



to one-half the time with less fatigue. 



More detailed data is given in Station Circular 34. {Miscellaneous 

 Income) 



Milk Cools Best in Dry Storage 



Further studies in milk cooling conducted by W. T. Ackerman and 

 H. C. Moore point to the superiority of the dry room or cabinet type 

 of electric refrigeration over the wet tank type of storage. Under the 

 former method surface coolers are used for pre-cooling the milk before 

 it is placed in storage; under the wet type pre-cooling and storage are 

 combined into one process by immersing cans of warm milk in refrig- 

 erated water. 



The significant findings to date show that: 



