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.
How to Calculate Your Pool Pump's Energy Use. A lot of pool pumps claim to be energy efficient, but their numbers often tell a different story. We sometimes find out that energy efficient pool pumps actually burn 1500 to 2,000 watts of power. EcoPump runs on as little as 230 watts. The good news is that anyone can look up the numbers on any motor and determine its efficiency. We simply look at the pump's amp draw.