Article 1051382 of alt.home.repair: Path: news.misty.com!not-for-mail From: nicksanspam@ece.villanova.edu Newsgroups: alt.home.repair Subject: Re: Suggestions on heating detached garage - running gas? Furnace type? Date: 12 Oct 2008 18:54:42 -0400 Organization: Villanova University Lines: 26 Message-ID: References: <7b08b0af-daf4-4372-a0a0-1a07f634736b@t65g2000hsf.googlegroups.com> <948c4449-02b8-49b7-b7cd-ad461c0a07d4@h2g2000hsg.googlegroups.com> NNTP-Posting-Host: acadia.ece.villanova.edu X-Trace: max.inside.misty.com 1223852085 22613 153.104.44.130 (12 Oct 2008 22:54:45 GMT) X-Complaints-To: abuse@misty.com NNTP-Posting-Date: Sun, 12 Oct 2008 22:54:45 +0000 (UTC) Xref: news.misty.com alt.home.repair:1051382 Edwin Pawlowski wrote: > wrote in message >> >> With natural gas at $2/therm and electricity at 10 cents/kWh, > >Nick, it is not 1965 any more. Where are you getting those costs? >Here in New England, gas is closer to $12 a therm... Natural gas is about $1.80/therm here. Maybe you should move. BTW, I made a mistake in not adding 11K Btu back in... >With natural gas at $2/therm and electricity at 10 cents/kWh, 1) can make >100K Btu for $2/0.93 = $2.15, 2) costs $2/0.8 = $2.50, and 3) costs $2 for >89K of sensible heat plus 11K of latent heat, ie water vapor, which the AC >converts to sensible heat with 11K/3 = 3667 Btu (1.07 kWh) of electricity, >which adds another 3667 Btu to the room, so 3) can provide 92.7K Btu for >$2.107, or 100/92.7x2.107 = $2.27 for 100K Btu, with no chimney nor thru- >the-wall vent, at less initial cost, with welcome winter humidification. Option 3) costs 100K/103667x2.107 = $2.03/therm (100K Btu, delivered), so it's a no-brainer. Nick