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2. Propane - Wikipedia

   en.wikipedia.org/wiki/Propane

   The enthalpy of combustion of propane gas where products do not return to standard state, for example where the hot gases including water vapor exit a chimney, (known as lower heating value) is −2043.455 kJ/mol. [29] The lower heat value is the amount of heat available from burning the substance where the combustion products are vented to the ...

3. Heating bills could be 20% less this winter, but it will ...

   www.aol.com/heating-bills-could-20-less...

   Falling natural gas prices are expected to provide some relief this winter for households that struggled with last yar's record heating bills.

4. Gas heater - Wikipedia

   en.wikipedia.org/wiki/Gas_heater

   A gas heater is a space heater used to heat a room or outdoor area by burning natural gas, liquefied petroleum gas, propane, or butane. Indoor household gas heaters can be broadly categorized in one of two ways: flued or non-flued, or vented and unvented .

5. Plate heat exchanger - Wikipedia

   en.wikipedia.org/wiki/Plate_heat_exchanger

   The total rate of heat transfer between the hot and cold fluids passing through a plate heat exchanger may be expressed as: Q = UA∆Tm where U is the Overall heat transfer coefficient, A is the total plate area, and ∆Tm is the Log mean temperature difference. U is dependent upon the heat transfer coefficients in the hot and cold streams.

6. How extreme heat is making your gas more expensive - AOL

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7. Why Is Our Heating Bill So Crazy Expensive Right Now? - AOL

   www.aol.com/lifestyle/why-heating-bill-crazy...

   For premium support please call: 800-290-4726 more ways to reach us