. Railway maintenance engineering, with notes on construction . 302 RAILWAY MAINTENANCE air being denser, will flow out through these openings at thebottom of the house and will be replaced by the warmer airdrawn in through the openings in the roof. This warmer airwill be cooled by contact with the ice and cause ice is a maxim in ice-house construction, that the space in whichthe ice is packed must be as nearly as possible entirely cut offfrom the outer air, and it should be surrounded by an insulating VentilationZx 8 PI ate- 6 Opening. Ventilation <- / Board Ventilatio
. Railway maintenance engineering, with notes on construction . 302 RAILWAY MAINTENANCE air being denser, will flow out through these openings at thebottom of the house and will be replaced by the warmer airdrawn in through the openings in the roof. This warmer airwill be cooled by contact with the ice and cause ice is a maxim in ice-house construction, that the space in whichthe ice is packed must be as nearly as possible entirely cut offfrom the outer air, and it should be surrounded by an insulating VentilationZx 8 PI ate- 6 Opening. Ventilation <- / Board Ventilation 4AirSpace- r-t A 2x4} K 25- FiG. 163.—Ice House with Circulation Vent. material. This means that the ceiling over the ice chambermust be insulated. In the roof above the ceiling it is proper and desirable tohave air circulation, because the brisk movement of the air atthe top of the house will dissipate the heat which tends to bestored under the roof. The air-vent or free circulating air passage along the wallsof the ice house is of very doubtful value. If such an air spacewere entirely sealed the air within it would tend to be cold, and ICING STATIONS 303 would therefore, oppose the passage of heat, until the heat leak-ing in through the exterior wall raised the temperature of thisair quite appreciably. Where the air space is open, however, it is found that theresult is to supply a continuous current of heat which must betaken up by the wall structure and hence transmitted into theice chamber. The lower portion of the air in the circulatingair
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1915
