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It was a dark and stormy night. In a house near Denver, Colorado, the indoor temperature dropped below 68℉, and the thermostat activated the heating system. This particular heating system combined both a heat pump and a natural gas furnace into a configuration known as a dual-fuel system, which is gaining traction as an archetype for inexpensively electrifying existing homes. This home was..
Energy Central…
We are now in a time of decreased Security of Supply (call it SOS) and utilities are continuously challenged in keeping the guarantee of delivering power on the same level. A famous Dutch newspaper NRC told that cooling equipment will come into the economic range of many people in Developing Countries and increase the peaks on the grid. In many of these countries but also in the richer..
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Will it be heat pumps or hydrogen for renewable heat. Perhaps both 48 references to hydrogen in this report
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Heat pump devotees, do you support electrification policies but worry about leaking refrigerants contributing to climate change? Relax. Yes, refrigerants are a serious problem, but the climate benefits of replacing gas furnaces with heat pumps far outweighs the drawbacks. Learn why in my latest article.
Energy Central…
Power plants are familiar with using continuous emissions monitoring systems (CEMS) to monitor pollutants, but these devices also may be able to measure heat rate—which could be handy for future compliance with the Clean Power Plan.
Continuous emissions monitoring systems (CEMS) are used to monitor power plant flue gas emissions as a means to comply with federal and state air emission standards. Through various methods, they determine the concentration and amount of key emissions, including nitrogen oxides, sulfur dioxide, carbon monoxide, carbon dioxide (CO2), hydrogen chloride, particulate matter, mercury, and volatile organic compounds (Figure 1).
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1. A continuous emissions monitoring system. Courtesy: EPRI |
CEMS are required in all U.S. fossil-fired plants greater than 25 MW. They are a mature technology, and most have been widely used for more than 20 years.
The CEMS data provides an official record of the key power plant flue gas emissions. In the U.S., this data is reported to the Environmental Protection Agency (EPA).…