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Gallons Per Watt-Hour or (G/Wh) is a formula used to test the efficiency of a pool pump or sump pump. == California Title 20 == California's Appliance Efficiency Regulations were established in 1976 in response to a legislative mandate to reduce California's energy consumption. Through that "Title 20" was born. Over time with the increase of pools and their complexity, the potential energy savings from residential pool pumps has become huge.〔Synergies in Swimming Pool Efficiency: How Much Can Be Saved?〕 Residential Pool Pumps were first included in the 2005 Title-20 appliance standards that were adopted at the end of 2005. "California has a limited ability to produce electricity. When California electrical demand exceeds its production capacity the utility companies must purchase electricity, usually form out of state companies at a much higher cost. The cost of building power plants and the environmental issues they bring make it difficult to build power plants quick enough to keep up with California's energy needs. This makes conservation the most feasible and economical solution for the utility companies. There are approximately 1.5 million pools in California that consume an average of 2,000 watts per hour when running. It is estimated that 6 power plants are dedicated to operating swimming pools. Those 2,000 watts per hour can be reduced by controlling the size and performance of the pool and spa filter pump. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Gallons per watt-hour」の詳細全文を読む スポンサード リンク
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