How much and what sort of insulation are you using? Should be at least 4 inches in the walls and 6 in the ceiling of fiberglass, r 12 and r 20 respectively.
The big deal is to seal all air leaks through the building so the cold can't get out or the hot get in. The insulation will take care of conduction and to some extent radiation but convection needs to be sealed against. Tape or calk the seams in the poly vapor barrier to keep air from moving through them. Remember too that when you pound a nail through that plywood it will penetrate the barrier unless there is some space there. If you have the room, an inch and a half of extruded foam taped at the seams and held in by your plywood will add insulation, eliminate air flow and provide room for a screw from puncturing the barrier from through the plywood. Dale Leavens, Cochrane Ontario Canada [EMAIL PROTECTED] Skype DaleLeavens Come and meet Aurora, Nakita and Nanook at our polar bear habitat. ----- Original Message ----- From: Max Robinson To: [email protected] Sent: Saturday, August 18, 2007 12:55 PM Subject: Re: [BlindHandyMan] Air conditioning calculations. Dale asked. So is the shop cool enough or not? I don't have any insulation installed in the shop at this time so I don't know. It's like an attic in there running about 120 degrees in the afternoon and the AC can't even make a dent in it. The teddybear cottage is a different story. Note, that's what Sue calls her little house. We spent this past week installing insulation. It was quite a job to put it in the ceiling but we got it done and stapled the edges of the vapor barrier to the joist using an electric staple gun. We finished up yesterday afternoon and I turned on the AC and left it over night. The new window ACs have digital readouts for thermostat setting and temperature. It's about noon here and just a few minutes ago it was 75 in there. the building is 10 by 16 feet and the AC is a 5,000 BTU. After we finish the paneling in the teddybear cottage we will put insulation in my shop. I'm going to use 1/2 inch plywood for paneling in there. I want something that I can drive nails into and hang things without having to hit a stud. The shop is 12 by 30 feet and the AC I got for it is 10,000 BTU. I hope it's big enough. I have a bad feeling it isn't. Regards. Max. K 4 O D S. Email: [EMAIL PROTECTED] Transistor site http://www.funwithtransistors.net Vacuum tube site: http://www.funwithtubes.net Music site: http://www.maxsmusicplace.com To subscribe to the fun with tubes group send an email to, [EMAIL PROTECTED] ----- Original Message ----- From: "Dale Leavens" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Friday, August 17, 2007 10:59 PM Subject: Re: [BlindHandyMan] Air conditioning calculations. > So is the shop cool enough or not? > > > > Dale Leavens, Cochrane Ontario Canada > [EMAIL PROTECTED] > Skype DaleLeavens > Come and meet Aurora, Nakita and Nanook at our polar bear habitat. > > > ----- Original Message ----- > From: Max Robinson > To: Blind Handyman > Sent: Friday, August 17, 2007 11:43 PM > Subject: [BlindHandyMan] Air conditioning calculations. > > > I don't remember seeing an article on sizing an air conditioner. If there > is one in the files section pleas inform me. The issue came up in > connection with my shop building. I tried to calculate the heat gain > using > what seemed to be the ohm's law for heat transfer. I got a ridiculously > small number for the BTU capacity of the unit and ended up using what it > said on the box about how much area it would cool. No chance to use the R > value of the insulation, number of windows, etc. Would Ray or someone > please post something on this subject? > > Regards. > > Max. K 4 O D S. > > Email: [EMAIL PROTECTED] > > Transistor site http://www.funwithtransistors.net > Vacuum tube site: http://www.funwithtubes.net > Music site: http://www.maxsmusicplace.com > > To subscribe to the fun with tubes group send an email to, > [EMAIL PROTECTED] > > > > > > [Non-text portions of this message have been removed] > > > > To listen to the show archives go to link > http://acbradio.org/handyman.html > or > ftp://ftp.acbradio.org/acbradio-archives/handyman/ > > The Pod Cast address for the Blind Handy Man Show is. > http://www.acbradio.org/news/xml/podcast.php?pgm=saturday > > Visit The Blind Handy Man Files Page To Review Contributions From Various > List Members At The Following address: > http://www.jaws-users.com/handyman/ > > Visit the archives page at the following address > http://www.mail-archive.com/[email protected]/ > > If you would like to join the Blind Computing list, then visit the > following address for more information: > http://jaws-users.com/mailman/listinfo/blind-computing_jaws-users.com > > For a complete list of email commands pertaining to the Blind Handy Man > list just send a blank message to: > [EMAIL PROTECTED] > Yahoo! Groups Links > > > > > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.5.484 / Virus Database: 269.12.0/959 - Release Date: 8/17/2007 > 5:43 PM > > [Non-text portions of this message have been removed]
