| 摘要 |
<p>PURPOSE:To equalize substantially the quantities of hot water fed from separate hot water storage tanks and to utilize effectively the hot water in each hot water storage tank by connecting a plurality of hot water storage tanks in juxtaposition by using first and second connection pipes, and by equalizing substantially fluid resistances of separate channels from a water feeding pipe to a hot water feeding pipe through the separate hot water storage tanks. CONSTITUTION:First and second hot water storage tanks 1 and 2 are equal to each other in terms of the dimension of an inside diameter and the dimension of the height, and first and second connection pipes 3 and 4 are also equal to each other interms of the dimension of an inside diameter and the length. Accordingly, the fluid resistance of a channel A from the outlet of a water feeding pipe 5 to the inlet of a hot water feeding pipe 6 through the hot water storage tank 1 and the connection pipe 4 and the fluid resistance of a channel B from the outlet of the water feeding pipe 5 to the inlet of the hot water feeding pipe 6 through the connection pipe 3 and the hot water storage tank are equal substantially. Even when the two hot water storage tanks are connected in juxtaposition, therefore, the quantities of hot water fed from the separate hot water storage tanks become equal substantially. When the water in the two hot water tanks 1 and 2 is heated to a prescribed temperature by heating electric heaters 7 and 8 by a midnight discount-rate power and hot water is supplied from the hot water feeding pipe 6, water is supplied by the fed quantity from the water feeding pipe 5.</p> |
