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The coefficient of performance or COP (sometimes CP or CoP) of a heat pump, refrigerator or air conditioning system is a ratio of useful heating or cooling provided to work required. Higher COPs equate to lower operating costs. The COP usually exceeds 1, especially in heat pumps, because, instead of just converting work to heat (which, if 100% efficient, would be a COP of 1), it pumps ... More @Wikipedia
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- Performance Technologies, Inc.Signaling System 7 (SS7) products to extend telecommunications networks
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- RCN - Modal titleWaiting for connection... X × Modal title. Close
- The Rock's mom joins her son on 'The Tonight Show' for a ...The Rock's mom steals the show as he joins her in ukulele duet on "The Tonight Show Starring Jimmy Fallon." CNN's Jeanne Moos reports.
- NRHS - High Performance for your Harley Twin Cam ...NOTICE . The time has come to say goodbye. After almost 15 years we have made the difficult decision to close NRHS. we have loved serving our thousands of wonderful customers through the years and hope to see you out on the road.
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