. Florists' review [microform]. Floriculture. 180 The Florists' lUview DaciHBU 10, 1914i SMITH, UNEAWEAVBi & CO. •ITUMINOUS %#^##^hB Wait End Trust Buildins. PHILADELPHIA 1 BroadwftT. NEW YORK Wnttins Bnildinc. LEBANON. PA. M»Btloii Th* ftmwUm wifii tod wr**» Simonds Heating & Specialty Coc Grand Rapids, Mich. QREBNHOUSB ONE POUND PRESSURE VACUUM HBATINQ SYSTEMS litBHoB Tho R^TJew whwi yon wn»». Greenhouse Heating. ATTACmNG A OENEBATOB. We are heating a greenhouse, 28x100, by the overhead, downhill hot water system^ with a pipe running to the expansion tank from a 4-inch main di- rectl
. Florists' review [microform]. Floriculture. 180 The Florists' lUview DaciHBU 10, 1914i SMITH, UNEAWEAVBi & CO. •ITUMINOUS %#^##^hB Wait End Trust Buildins. PHILADELPHIA 1 BroadwftT. NEW YORK Wnttins Bnildinc. LEBANON. PA. M»Btloii Th* ftmwUm wifii tod wr**» Simonds Heating & Specialty Coc Grand Rapids, Mich. QREBNHOUSB ONE POUND PRESSURE VACUUM HBATINQ SYSTEMS litBHoB Tho R^TJew whwi yon wn»». Greenhouse Heating. ATTACmNG A OENEBATOB. We are heating a greenhouse, 28x100, by the overhead, downhill hot water system^ with a pipe running to the expansion tank from a 4-inch main di- rectly over the boiler. The top of the main is only about eight inches below the bottom of the expansion tank. Now I wish to attach a mercury generator, and of course I shall be unable to locate the generator between the top of the main and the bottom of the tank. Will good results follow if the generator is located at some point below where the expansion pipe is connected with the mainf A. B. B. In order to secure any benefit from a generator, it must be used in connection with a closed system, as a generator really is nothing more than a safety valve and vacuum valve combined. Hence, unless the expansion tank can be put under pressure, no effect will be secured from the generator. How- ever, the generator can be attached to the system, either on the flow or on the return pipe, provided the expansion tank is removed and an air valve is inserted at the highest part of the main. This, however, might cause trouble, since air might collect in the main and hinder the circulation. To correct this diflSculty, unless the expansion tank now in use is capable of being put under a pressure of 100 pounds, I would suggest that it be replaced with a small, riveted steel tank, with a water column on the side and an air valve in the top. With a reasonable amount of attention, the main can then be kept free from air, and by using the circulator the water can be carried under pressure. HEATINQ
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Keywords: ., bookcentury1900, bookdecad, booksubjectfloriculture, bookyear1912
