November 2016 Tale of the Tape

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lsayre
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Posts: 12833
Joined: Wed. Nov. 23, 2005 9:17 pm
Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Blaschak Anthracite Pea
Other Heating: Resistance Boiler (13.5 KW), ComfortMax 75
Location: N/E Ohio, between Medina and Wadsworth

Post Fri. Dec. 02, 2016 7:42 am

926 Lbs. of coal burned (for combined DHW and home heating)

590 HDD's

Home heating only estimate is 1.392 lbs. per HDD. This equals an estimated 821 lbs. of coal.

An estimated 105 Lbs. of coal went to DHW heating.

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StokerDon
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Posts: 3321
Joined: Mon. Nov. 11, 2013 11:17 am
Stoker Coal Boiler: BairMatic BMC-500 with Van Wert VA400 Stoker, Gentleman Janitor GJ-671/EFM S-15 stoker, Van Wert VA-600
Hand Fed Coal Furnace: Harman SF3500
Coal Size/Type: Rice and Chestnut
Other Heating: Noth'in but COAL! Well, Maybe a little tiny bit of wood
Location: PA, Southern York County!

Post Fri. Dec. 02, 2016 7:42 pm

You got me beat (again) Larry. I came up with 1146 pounds for November. That's just for the one in the basement.

One of these days I will figure out what a Heating Degree Day is.

-Don

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grumpy
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Post Fri. Dec. 02, 2016 7:45 pm

One of these days I will figure out what a Heating Degree Day is.
Yeah, please explain...


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Lightning
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Posts: 8705
Joined: Wed. Nov. 16, 2011 9:51 am
Hand Fed Coal Furnace: Overmodified/Bored out Clayton 1537
Coal Size/Type: Anthracite/Awesome Size
Location: Olean, NY

Post Fri. Dec. 02, 2016 8:16 pm

Basically it's the difference between the average outdoor temperature and 65 degrees. For example if it's 15 degrees at night then 25 degrees during the day, the average is 20 degrees for that 24 hour period. Then the difference between 20 degrees and 65 (the temp thought at which heating is required) is 45.

So the HDDs for this example is 45 HDDs

Then with that figure you can divide it by the amount of coal burned to find the amount of coal you needed for each heated degree. Later in the season you can compare HDDs with previous HDDs and get an idea if your appliance is running more or less efficient during colder weather.

Usually it's pretty linear meaning you can accurately predict your coal usage based on temperature forecasts for the future. Larry is pretty good at it lol, he can get within a few pounds for the whole month.

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grumpy
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Post Fri. Dec. 02, 2016 8:18 pm

Ok I get it, thanks.

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Lightning
Member
Posts: 8705
Joined: Wed. Nov. 16, 2011 9:51 am
Hand Fed Coal Furnace: Overmodified/Bored out Clayton 1537
Coal Size/Type: Anthracite/Awesome Size
Location: Olean, NY

Post Fri. Dec. 02, 2016 8:21 pm

The reason a base of 65 degrees is used instead of 72 (indoor temp average) is because you have to allow some degrees by other things in the house creating heat. For example appliances, TVs, lights, bodies, Christmas trees. That's my reasoning anyways lol.

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