Ventilation : a text-book to the practice of the art of ventilating buildings with a supplementary chapter upon air testing / by William Paton Buchan.

Buchan, William Paton

Date:: 1891

Credit: Ventilation : a text-book to the practice of the art of ventilating buildings with a supplementary chapter upon air testing / by William Paton Buchan. Source: Wellcome Collection.

83/298 (page 71)

$nd outlets were large. It surely follows therefore that fhere an automatic system is adopted for ventilation the provision should also he ample—in fact, greater, short Uowance giving unsatisfactory results. Ventilation of schools by mechanical means is more xpensive than the automatic system, and especially for mall schools. It is more appropriate for some of the xtra large schools in cities, especially where these are et down in a position that is confined, or not airy. Some of the large city schools are two or more storeys 11 height, and serve for from 1,000 to 1,500, or more, cholars; while many of the country schools are only or about seven hundred or less. To force small country schools of only one storey to dopt a mechanical system of ventilation would, be a tardship owing to the first and continuous expense, and s not necessary, more especially if there be any truth u what the architect, the head-teachers, and the School ]oard agree in stating about the public school at Blair- gowrie, in Perthshire (which was examined by me in De- cember, 1885, and thereupon improved). The architect, \h\ Lake Falconer, wrote in 1886 : The ventilation of he public schools is now excellent. The self-acting nalves are doing splendidly. The teachers are delighted villi the pure atmosphere in the rooms ; it is so different rom what it was formerly. * He also remarked :— ' In regard to ventilating a school by means of a fan Iriven by a gas or other engine, had we adopted it here vc would have been put to a ridiculous expense, and ;ould not have got better ventilation. The Blairgowrie school serves for about GOO pupils, [t stands on high ground and well exposed to the wind md fresh air. The ceilings are about 19 ft. high. The rentilation was improved in June, 1886, on the plan for mtlets shown in Fig. 47, and with Tobin's tubes for nlets. Were the work to be done now I would recom- nend the provision for outlet ventilation; that is, the dze of the outlet pipes and ventilators to be larger * It was only nominally and badly ventilated before this in the Jig. 9 style already condemned herein.$