How can I choose the best pump?
Choosing the right pool pump may seem like a depressing task. Consumers face new expressions such as "flow" and "head pressure" and do not have a real idea how to identify these rates. With a few simple calculations, consumers can get a good idea of what the pump best suits them.
The first calculation to be detected is called flow. This says that the amount of water that can be moved in a certain period of time and is usually measured in gallons per minute (GPM). To find out, consumers must first know how many gallons of water are in their pool. For example, for a swimming pool, which is 10 feet wide (3.0 meters) and 20 feet (6.1 meters) long and 5 feet (1.5 meters), multiply 10 times 20 times 5 to get a total of 1000 cubic feet (28.3 cubic meters). There are about 7.5 gallons (28.4 liters) in one cubic track of space, so now multiply by 7.5 by 1000.Bazen in this example has approximately 7,500 gallons (28,390 liters).
The average fund must circulate the equivalent of the entire water in the pool about every four to six hours at least once or twice a day. This does not mean that all water will be circulated, but it ensures that it will be a large part of it. To detect the flow, the user must decide how often he wants the water to fully circulate.
For example, for the aforementioned pool of 7,500 gallons (28,390 liters), the consumer decides to want the pool to fully orbit every six hours. Divide the total gallons by six. This means that there are 1,250 gallons (4,731 liters) per hour that must circulate. Divide this number by 60, number of minutes per hour to find GPM. For example, the flow would be around 20 GPM.
Some stop here and assume that they need to simultaneously need a pool pump with a flow rate of 20 hours. This calculation does not take into account the resistance to the flow that occurs from the resistance created in the pipeline and filter systems. This resistance is called head pressure. It calculatesin the feet of the head.
To determine the accurate head pressure, a difficult and mathematically demanding task is. Instead, pool owners can use a quick estimate at home. First, find out how many feet of the pipe is between the pump and the area where the water is inserted back into the pool. This is the initial pressure and the initial character for head pressure.
Now, if the filter is used to draw and return water, divide the number in half, as this assistance will reduce the difficulty of water transport. For all areas where the diameter of the backline changes, add the equal percentage of the change. For example, if you use 1 inches (2.54 cm) pipes for 10 feet (3 meters) that turn into a 3/4 inches tube (1.9 cm), add 25% more, or 2.5 feet (0.7 meters), for calculation.
every 90 degrees adds up to two more heads. Any inline filters add two to ten feet of the head. If the filter uses the course material, estimate at the bottom end. The finer the filter type, the more legs it added.
If water is returned to waterThe pool or higher levels are the end of the calculations. If it is under the surface, add one leg head for each leg below the surface. In general, the underground pool will have 50-60 feet of head pressure, while over the ground will have about 30 feet of head pressure.
After calculating the head loss in the legs, check the manufacturer's graphs and find out what pool pump will work best for the specific settings. Each pool pump can handle different flow and head loss with different horses.
It is important not to choose a pump with a pool larger than needed. Too large pump uses extra energy and contributes to higher than forced energy for energy. Using these simple calculations, swimming pool owners can enter the store ready to buy the right pump for their individual settings.