The circulating water pool is located beneath the building

Design of Circulating Water Pools and Energy Saving 1. Selection of the location for the circulating water pool: The circulating water pool should be constructed near the area where the highest volume of water is required. The remaining production units should be located as close as possible to the circulating water pool, in order to reduce the length of water supply and drainage pipelines as well as the number of bends, thereby minimizing pipe resistance losses. For production units that are located further away, it is possible to construct a separate circulating water pool for them. At the same time, the circulating water tank should be located as high as possible. In a high-pressure water supply system, both the inlet and outlet pressures of the circulating water in the production area increase, which allows it to meet the water demands of multiple floors. For example, a project requires the construction of a circulating water tank to supply water to the 0.00 level, the 6.00 level, and the 12.00 level. If the tank is built at the 0.00 level, the water supply pressure must be above 0.12 Mpa to meet the requirements. If the tank and the pump room are located at the 12.00 level, the water supply pressure only needs to be higher than the pressure loss due to the longest pipes in order to satisfy the demand. It is evident that this approach results in significant energy savings. 2. Minimize the resistance in the pump’s inlet pipe as much as possible during design. The effect of the inlet pipe resistance of a pump is much greater than that of the outlet pipe resistance of the same pump. Because in actual operation, in addition to causing a pressure drop due to the resistance in the pump’s inlet pipe, such high resistance can also lead to unstable flow conditions as water enters the pump, resulting in swirling effects. This makes it easy for phenomena such as surge and cavitation to occur, reducing the pump’s ability to draw in water and its efficiency, and thus leading to energy waste. 3. Break away from the original design of centralized supply of circulating water pressure; calculate the pressure of the circulating water based on the requirements of each project, and classify it according to pressure. First, identify the pressure level with the highest demand for flow rate, which will be used as the primary supply target. For those areas with lower pressure and low flow rates, they can be integrated into the supply system at the determined pressure level. For production units or equipment that require high or low circulating water pressure and high flow rates, an alternative pump is used for separate supply. To ensure stable production, the pump manifold in each pressure zone can be connected using connecting valves, so that the water pressure systems at different levels can serve as backups for one another.

It’s possible; it meets the design specifications. Generally, it is placed together with the fire water tank, but it can also be designed separately.