tag:blogger.com,1999:blog-5017846298709189315.post3064649683716349064..comments2017-06-18T14:06:36.412-04:00Comments on Woodstock Soapstone Co. Blog: BTU Output: How is it Determined?Woodstock Soapstone Co.http://www.blogger.com/profile/01180213975453065711noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-5017846298709189315.post-17395644589959883472014-03-24T13:36:16.811-04:002014-03-24T13:36:16.811-04:00Wow! Someone actually read this, and tried out th...Wow! Someone actually read this, and tried out the math! The 52,090 BTU/hr number is in error (and has been corrected). 52,090 BTU/hr would have been the output at 75% efficiency, not 82%. Probably the author playing around with a spreadsheet and not paying attention. In both calcs, the two numbers should be the same (the parenthetical explanation merely serving as explanation for hourly output).<br /><br />The IDEAL STEEL has a higher efficiency at low burn than at high burns. During EPA tests, it was 84.5% efficient at low burn, but only 75% at its highest burn rate. The same approximate numbers would apply to cordwood.Woodstock Soapstone Co.https://www.blogger.com/profile/01180213975453065711noreply@blogger.comtag:blogger.com,1999:blog-5017846298709189315.post-26435379193930771352014-03-22T01:30:48.026-04:002014-03-22T01:30:48.026-04:00Greetings,
I am confused by the number given for ...Greetings,<br /><br />I am confused by the number given for BTU/hr output for the Ideal Steel Hybrid. I understand how the 56,952 figure was arrived at but I don't understand where the 52,090 figure comes from.<br /><br />Why does the derived number of 43,756 at 63% efficiency match the given value of 43,756 BTU/hr while the 82% figures vary?<br /><br />Also (and more important to me) is the 82% efficiency figure for the Ideal Steel Stove true on longer burns as well i.e. if the stove is damped down so as to burn the load of wood in 10 hours rather than in two hours would this change the efficiency of the stove? (Obviously it would reduce the BTU/hr output, but would the 82% efficiency figure still hold true?)<br /><br />Thank you for your assistance,<br />A Puzzled ViewerAnonymousnoreply@blogger.com