. Ventilation for dwellings, rural schools and stables. in the ventilating shaft to be opened only when the stable istoo warm or when the draft is too feeble. such openings on the leeward side be prevented. Withoutsome such provision as this the case would be like loweringthe windows at the top on opposite sides of stable or room,which always results in fresh air entering on the windwardside and warm air escaping on the other. With the ar-rangement adopted, as shown in the illustrations, only astrong wind pressure can result in forcing the warm air todescend and escape through intakes on the l
. Ventilation for dwellings, rural schools and stables. in the ventilating shaft to be opened only when the stable istoo warm or when the draft is too feeble. such openings on the leeward side be prevented. Withoutsome such provision as this the case would be like loweringthe windows at the top on opposite sides of stable or room,which always results in fresh air entering on the windwardside and warm air escaping on the other. With the ar-rangement adopted, as shown in the illustrations, only astrong wind pressure can result in forcing the warm air todescend and escape through intakes on the leeward side. Principles of Ventilaiion Construction. 75 The ventilation of offices which is so often attempted by-raising a w-indow at the bottom and inserting under it ascreen carrying a pair of short Tobin tubes, like up-turnedpipe elbows, while better than no-attempt, can seldom giveadequate ventilation where steam or hot water is used forwarming for the reason that here provision only is madefor air to enter and this can take place no faster than. Fig. 33.—Floor plan of dnir}- staMe. Vlis. 32, sliouiii^ fresh nir iiiinko«on all .sides at the large arrows crossing the walls; two veiifilalingflues are AA and the air approaching thetii along the floor level Indi-cated by the small arrows. opportunity for escape exists. The opening nf the doorinto a hallway or of the transom above it usually has onlythe effect of making the box to be ventilat(Hl larger; andthe result usually is, with such makeshifts, that, on windydaj^s during cold weather, such window openings nreclosed to save heat and during still weather there is littlemntivo power to force an air movement if they nre openedand hence much of the time very inadequate vcmtilationmust obtain. PRACTICE OF VENTILATION. In coming to the practice of ventilation in cold climatesthe problem is reduced to its lowest terms when it is statedthat the desired results can be ideally secured only whenthe construction of the building to
Size: 1747px × 1430px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectventilation, bookyear
