Hence the relatively small projected sea level rise by the year 2100, as compared to the changes measured in tens of meters that occurred in Earth's history (see Introduction). The rise by 2100 is only a small beginning of a much larger, multi-century response of ocean and ice sheets to elevated global temperatures.
Single Speed Pool Pumps: Runs at a single speed, 3450 rpm (revolutions per minute). Imagine if your car ran at 3450 rpm - all the time, and how much gas you would use! Dual Speed Pool Pumps: Have a fourth wire coming into the pump, the low speed wire. This allows you to run the pump on low speed for 8-16 hrs per day, and high speed for 4-8 hrs. Variable Speed Pool Pumps: Operates at many speeds, programmable and self-optimizing for the highest energy efficiency and greatest energy savings.
Pool pumps should really be rated by the gallons per minute of water flow instead of the motorâs hp. You need a pump that will be able to pump all the water in the pool through the filter in 8-10 hours.Which is 40 gpm for smaller pools and 80 gpm for larger pools.When replacing a pool pump you should check the flow rate of the existing pool filter.omeone gave me a Dayton Pool pump-brand new-that is 1/2 HP. Our pool hold approx. 25,000-30,000 gallons of water. The shallow end is about 3 ft deep and deep end is about 10 ft deep.