Hot water for domestic use : a complete guide to the methods of supplying and heating water for domestic purposes, giving each step to be taken and explaining why it is done . ts maximumdensity, and the application of either heat or coldwill then cause it to increase its bulk. Cause of Water is due to this difference in weight between twoequal volumes of water at different temperatures,that circulation takes place, and makes possible theheating of a large tank or body of water by apply-ing heat at only one point. Lx)CAL Circulation of circulation of water, or the cir
Hot water for domestic use : a complete guide to the methods of supplying and heating water for domestic purposes, giving each step to be taken and explaining why it is done . ts maximumdensity, and the application of either heat or coldwill then cause it to increase its bulk. Cause of Water is due to this difference in weight between twoequal volumes of water at different temperatures,that circulation takes place, and makes possible theheating of a large tank or body of water by apply-ing heat at only one point. Lx)CAL Circulation of circulation of water, or the circulation ofwater within an open vessel or tank, will be betterunderstood by a reference to Fig. i. If heat beapplied to the center of the tank, as shown in theillustration, the water immediately above where theheat is applied, will become warmer, increase in bulkand decrease correspondingly in weight and will Circulation of Water 9 be displaced by a coI3er and heavier column ofwater, flowing down around the sides of the ves-sel to the bottom. As the heated water from thebottom of the tank rises to the surface it comes incontact with colder water and air to which it im-. Fig. 1. parts some of its heat. The constant rising ofwater near the center of the vessel forces the waterto the sides and in passing down along the wallsof the vessel the water parts with more heat until,having arrived at the point where it has the lowest 10 Hot Water for Domestic Use temperature of any water in the tank, it again isbrought to the center immediately above the flameto displace the heated water, and so in turn againmakes the circuit. This constant traveling of waterfrom the bottom of a tank and back again is knownas local circulation and it is due to this circulationthat we are able to heat water in a vessel. If in-stead of applying heat to the bottom of the tank itwere applied to the surface of the water, no cir-culation would take place, and outside of the upper-most layers the temperature of t
Size: 1020px × 2451px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookidhotwaterford, bookyear1910
