June, 1929] 



Electric Household Refrigeration 



Farm No. 4 



Refrigeration for the house on Farm Xo. 4 is obtained from the 

 dairy cold storage. The construction of this room is given in detail 

 in University of Xew Hampshire Experiment Station Bulletin Xo. 

 233 and Extension Circular 85. 



A well ventilated cabinet, 18 inches deep, is built into an out-of-the- 

 way corner in which foods may be stored without danger of being upset. 

 As shown in Fig. 4 this room is located about 50 feet from the kitchen 

 and therefore is not as convenient as the individual house unit. The 

 operating costs, however, are greatly reduced by this method, which is 

 shown in the current consumption and operating cost tables. The 

 assumption that 1/10 of the upkeep may be charged to the household 

 is made high intentionally to avoid favor. On a basis of cubic feet^ — 

 elimating the more accurate but practically impossible procedure of 

 attempting to determine the B.T.U.'s of heat in the food stored — the 

 house compartment occupies only 120 of the total space, so that this 

 latter fraction would probably be a closer estimate of the proportion 

 of cost. The room is shown in Fig. 5 but the cabinet cannot be seen. 



The equipment is subjected to modified outside temperatures all year 

 around. 



Although not equipped with ice trays, it has been found that ice cubes 

 will slowly freeze in a tray placed on top of the brine tank. 



Farm No. 5 



Fig. 5. Cold storage 

 on Farm No. 4. 



room and equipment 



The refrigerator on Farm Xo. 

 5 had been in use with ice for 

 28 years. It was converted to 

 the electric method by placing 

 the chilling tank in the ice com- 

 partment and the compressor 

 unit in the basement. The wall 

 construction consists of two 

 walls of '% inch clear white 

 pine, a 3/8 inch air space, and 

 two layers of insulating paper. 

 The exterior surface is finished 

 with paint and varnish. The 

 interior is lined entirely with 

 zinc. Two shelves are solid 

 pieces of slate arranged to allow 

 the cold air to circulate past 

 the front and rear edges. Two 

 shelves are of woven wire. 



The refrigerator (Fig. 1) is 

 located in a back kitchen which 

 is also used as a laundry. Ex- 

 cept on wash days this room is 

 exceptionally cool all vear 



