The Golden State: Where & How to Live, Secure, Visit, Enjoy and Thrive in California

Hot Water Suply

9,240x1.03889
new volume= =9,589.66 cu. in. Ans.
1.00101

EXAMPLE 2.—What is the change in volume of the water mentioned in example 1, under the conditions there stated?

SOLUTION.— 9,589.66-9,240 = 349.66 cu. in. Ans.

EXAMPLE 3.—If the vessel mentioned in example 1 is 18 inches in diameter, how much will the water rise therein under the conditions stated in that example?

SOLUTION.—The cross-sectional area of the vessel is 18sX.7854 =254.47 sq. in. The change in volume of the water being 349.66 cu. in.,the increase in height is349.66/254.47=1.37 in. Ans.

When hot water is confined in a storage tank, a relief valve should always be used on the tank to prevent damage to the tank in case, through accident or otherwise, there should be no provision for the water to expand.

Fire-Heated Water Heaters

11.Water Fronts—A water front may be used for heating water for domestic purposes, and may be located inside the firebox of a coal-burning kitchen range, forming one side of the firebox. The water front is an iron casting having two passages cored therein, and has at one end two tapped holes, one for each passage, for either 3/4-inch or 1-inch pipe, according to the size of the water front. While this form of water heater is generally called a water front, in many places itsname changes with its position in the firebox of the range. For example, when the water heater is located at the side cr back of the firebox, it is often called a water back.

A water front a is shown in section in Fig. 5. Its flat sides are tied together by a partition b, which compels the water to circulate through the entire length of the casting. The pipe c supplies the heater with cold water, usually taken from the bottom of the storage tank, and is called the return pipe to the water front. The pipe d receives hot water from the heater and delivers it to the tank, where it is stored ready for use.