DHW Setup

 
Pacowy
Member
Posts: 3555
Joined: Tue. Sep. 04, 2007 10:14 pm
Location: Dalton, MA
Stoker Coal Boiler: H.B. Smith 350 Mills boiler/EFM 85R stoker
Coal Size/Type: Buckwheat/anthracite

Post by Pacowy » Mon. Feb. 23, 2015 7:10 pm

hotblast1357 wrote:my theory has always been though to keep something at constant temp, it takes more to heat it up from nothing.
It's kind of counter-intuitive, but the heat loss is generally lowest when the temperature differential is minimized - i.e., it generally uses less total BTU's to leave something at room temperature and heat it up when you need it rather than keep it hot all of the time.

Mike


 
User avatar
Lightning
Site Moderator
Posts: 14659
Joined: Wed. Nov. 16, 2011 9:51 am
Location: Olean, NY
Stoker Coal Boiler: Modified AA 130
Coal Size/Type: Pea Size - Anthracite

Post by Lightning » Mon. Feb. 23, 2015 7:26 pm

I tend to agree since something that is hot will loose it's heat to the environment. That's why there is usually a small savings by turning the house thermostat down a few degrees at night. Of course the furnace will need to do a little extra work to bring it back up, but the total BTU's used should be slightly less than not turning it down at all. A house that is 75 degrees will loose its heat a little faster than a house that is 68 degrees. Same goes for a tank of water. That's my thought on it anyhow. :)

Post Reply

Return to “Coal Bins, Chimneys, CO Detectors & Thermostats”