Milk, cheese and butter, a practical handbook on their properties and the processes of their production . ght, and even in a room constructed as described, twenty degrees below thatbest point, we should have the means ofraising the temperature at such times byfifteen degrees at the least. We do notmean that such a fall would come in asingle night, but that in a continuationof cold and the absence of internal heat-ing the internal air will steadily sinktowards the external temperature, andwill not recover itself in the warmer partof the day. Probably twenty degrees ofdifference is the outside l
Milk, cheese and butter, a practical handbook on their properties and the processes of their production . ght, and even in a room constructed as described, twenty degrees below thatbest point, we should have the means ofraising the temperature at such times byfifteen degrees at the least. We do notmean that such a fall would come in asingle night, but that in a continuationof cold and the absence of internal heat-ing the internal air will steadily sinktowards the external temperature, andwill not recover itself in the warmer partof the day. Probably twenty degrees ofdifference is the outside limit ; but as thisis always possible in experience with autumn-made cheese, before it isready for the market, it must be provided for. But plainly the heatnecessary to keep the room right under such conditions, would be fartoo great for weather which, though milder, would still be too cold todispense with heating, and it is proper to provide for the regulation ofthe heat by stages, so that the loss of a few degrees maybe met withoutexcess, as well as the extreme of need without a failure. This may be. Fig. 58.—Hot-water TubularBoiler—Side Elevation. TIIK CHKDDAK DAIRY. 147 effected, as sliown in Fi^. 59, Ijy the use of a coil workini; in four sets,—one, two, three, or all of which may be employed at a time,—withcorresponding variations in the extent of the heating. From theboiler a, the flow-pipe //, rising, ends in a series of T-sections c,connected by expansion joints (/, and with the circulating pipes e,which are in four bends or sets numbered by nearness to the series of elbows y joins the lower pipe of each set with the upperone of the next set, and a series of valves g; /i, and i arc employed toopen or cut off communication between them. In Fig. 59, ^-and /areall open, and // closed, so that the circulation is, as shown by the
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectdairyin, bookyear1894
