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2. Furnace (central heating) - Wikipedia

   en.wikipedia.org/wiki/Furnace_(central_heating)

   The fourth category of furnace is the high-efficiency condensing gas furnace. High efficiency condensing gas furnaces typically achieve between 90% and 98% AFUE. [3] A condensing gas furnace includes a sealed combustion area, combustion draft inducer and a secondary heat exchanger. The primary gain in efficiency for a condensing gas furnace, as ...

3. Methanation - Wikipedia

   en.wikipedia.org/wiki/Methanation

   Methanation is an important step in the creation of synthetic or substitute natural gas (SNG). [7] Coal or wood undergo gasification which creates a producer gas that must undergo methanation in order to produce a usable gas that just needs to undergo a final purification step.

4. Central heating - Wikipedia

   en.wikipedia.org/wiki/Central_heating

   Institutional heating systems (office buildings or schools, for example) can use low-grade, inexpensive bunker fuel to run their heating plants, but capital cost is high compared to more easily managed liquid fuels. Natural gas is a widespread heating fuel in North America and northern Europe. Gas burners are automatically controlled and ...

5. Who pays closing costs in Texas? - AOL

   www.aol.com/finance/pays-closing-costs-texas...

   Closing costs of 1.5 percent on a home of that price would come to $5,314.50. However, that full amount is not paid by just the buyer or seller alone. Who pays closing costs in Texas, buyers or ...

6. Natural gas has never been this upside-down as negative ... - AOL

   www.aol.com/finance/natural-gas-never-upside...

   U.S. retail customers also are not being paid to burn natural gas in their homes. But operators of natural gas-fired power plants in West Texas, such as Xcel Energy, have been paid to take some ...

7. Liquefied natural gas - Wikipedia

   en.wikipedia.org/wiki/Liquefied_natural_gas

   The heating value depends on the source of gas that is used and the process that is used to liquefy the gas. The range of heating value can span ±10 to 15 percent. A typical value of the higher heating value of LNG is approximately 50 MJ/kg or 21,500 BTU/lb. [2] A typical value of the lower heating value of LNG is 45 MJ/kg or 19,350 BTU/lb.