Effect of total heat hot water system
The total heat capacity of water heater system has a great influence on the operating characteristics of the system. Figure 2 is based on the calculation of the example results drawn. In the water heater system, heat can be effective use of water is called the effective heat capacity. For example, concentrated at the bottom of the water tank and water solution, heat the water in the tank is the effective heat capacity, and tube, riser, falling water in pipes are not included in the effective heat capacity. In addition to effective heat capacity, the rest of the total heat capacity is known as invalid heat capacity. If the water in the water tank on the value as the abscissa, the
The average temperature of the water of the highest value for the vertical, the calculated results are expressed, we found that, in this case, the log and the water temperature of the water tank water linearly decreases, water, water temperature rise. Absolute temperature rise, the summer months are more obvious than that in cold season, at the same time, closer to the optimum tilt angle, the greater the value increase.
Extend the solar energy has important economic significance in water heater in use of the year. If in the design of water heater when the water tank capacity is small enough, then the group can be seen, even in the cold water tank in January, average temperature is business hope to achieve 37 - 40 ℃, close to take bath water temperature.
In the effective heat capacity reduced to small conditions, the proportion of invalid heat capacity is greatly improved, because the latter in the effective heat capacity (such as water tank capacity in reduced essentially unchanged). The operation characteristics of water heater total heat capacity in the system, the total heat capacity under certain conditions, the invalid heat drop down, the effective heat capacity is not up to the. Therefore, in the design of water heater system, especially the small tank scheme, should strive to reduce the invalid heat capacity, the heat capacity play a greater role of the components should be thoughtfully. In addition, in the small water tank scheme
In order to reduce the proportion of invalid heat, hot water can from the lowest system, makes the heat collecting pipe, connecting pipe in the water can be effectively utilized.
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