Handbook for heating and ventilating engineers . Fig. 42. HOT WATER AND STEAM HEATING 95 VAPOR SYSTEM OF STEAM HEATINO. Fig. 4; 68. Accelerated Hot Water Heating Systems:—Improve-ments have been devised for hot water heating whereby thecirculation of the water is increased above that obtained bythe open tank system. By increasing the velocity of thewater, pipe sizes may be reduced, resulting in an economyin the cost of pipe and fittings. In addition to this, wherethe temperature of the water is carried above that due toatmospheric pressure, the radiation may theoretically bereduced below that
Handbook for heating and ventilating engineers . Fig. 42. HOT WATER AND STEAM HEATING 95 VAPOR SYSTEM OF STEAM HEATINO. Fig. 4; 68. Accelerated Hot Water Heating Systems:—Improve-ments have been devised for hot water heating whereby thecirculation of the water is increased above that obtained bythe open tank system. By increasing the velocity of thewater, pipe sizes may be reduced, resulting in an economyin the cost of pipe and fittings. In addition to this, wherethe temperature of the water is carried above that due toatmospheric pressure, the radiation may theoretically bereduced below that for the open tank system. How farthese economies may be pursued in designing is a questionwhich should be very carefully considered. In many casesthe amiount of radiation is kept the same and the chief dif-ference merely thiat of pipe sizes. This article is descriptiveof several of the types of accelerated systems in use and isnot intended as a critical analysis of the merits of any oneas compared to the others. Of all the principles employed for accelerating the cir-culating water, four will be mentioned. First
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectventila, bookyear1913
