30 Apr '16, 2pm

Q: How can we boost #energy savings? A: Using data and benchmarking

Q: How can we boost #energy savings? A: Using data and benchmarking

Now, readers of this series will quickly point out that roughly two-thirds of the fuel energy that is used to produce electricity is lost before it can be used by the heat pump. But given the different thermodynamic methods that heat pumps use compared with furnaces and boilers, at some level of efficiency, an electric heat pump begins to use less total input energy than a natural gas furnace or boiler to deliver a unit of heat. This figure will depend on the efficiency of the power grid, which is increasing over time as more efficient generators replace older, less efficient generators. From a math standpoint, given today’s average power grid efficiency (33.25 percent in 2014), an electric heat pump with a HPSF over 9.45 will use less total energy than a 92 percent efficient natural gas furnace. While this level of performance may be attainable today with the most efficie...

Full article: http://www.ase.org/blog/where-can-we-find-even-more-savin...

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