Home |
Search |
Today's Posts |
|
Home Repair (alt.home.repair) For all homeowners and DIYers with many experienced tradesmen. Solve your toughest home fix-it problems. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
|
|||
|
|||
Heat load analysis software accuracy
This may be too technical for alt.home.repair so I'm posting he
Natural Resources Canada uses the following program to calculate rebates for energy efficient home upgrades. Download from: http://www.buildingsgroup.nrcan.gc.c.../hot2xp_e.html According to the technical report from this software, a one-story house with a full basement 43' x 43' exterior dimensions with a floor area of 1600sqft on the main + another 1600sqft in the bsmt results in the following heat loss values at 19F on the north west coast. Base values: ========== Orientation: west Window distribution: even, 15%, metal, single Cathedral roof: R12 attic Main floor walls: R12 on 2x4 wood Basement walls: no insulation, mostly below grade ACH @50kpa: 10.35 (ACH = air changes/hour) Heat loss = 57k (seems low to me as most HVAC contractor recommend 80k or more) Upgrades: (cummulative): HL 49k; Low-e, double pane, vinyl windows 37k; Add R20 to bsmt walls 32k; Upgrade attic to R40 28k; Reduce ACH to 4.5 It gets even better, annual fuel consumption is reduced from 215 million btu to a mere 81, almost 2/3's. Can anyone here verify these calculations with empirical evidence? |
#2
|
|||
|
|||
'This may be too technical for alt.home.repair so I'm posting=AD here'
Um, son, this may be too technical for you, but this IS is alt.home.repair |
#3
|
|||
|
|||
Matt wrote:
'This may be too technical for alt.home.repair so I'm posting* here' Um, son, this may be too technical for you, but this IS is alt.home.repair And it wouln't be a good idea at all to post it where I think he was going to post it..... |
#4
|
|||
|
|||
Martik wrote: This may be too technical for alt.home.repair so I'm posting he Natural Resources Canada uses the following program to calculate rebates for energy efficient home upgrades. Download from: http://www.buildingsgroup.nrcan.gc.c.../hot2xp_e.html According to the technical report from this software, a one-story house with a full basement 43' x 43' exterior dimensions with a floor area of 1600sqft on the main + another 1600sqft in the bsmt results in the following heat loss values at 19F on the north west coast. Base values: ========== Orientation: west Window distribution: even, 15%, metal, single Cathedral roof: R12 attic Main floor walls: R12 on 2x4 wood Basement walls: no insulation, mostly below grade ACH @50kpa: 10.35 (ACH = air changes/hour) Heat loss = 57k (seems low to me as most HVAC contractor recommend 80k or more) The most common furnace sizes I sold in Canada were 60 and 75 MBH. Upgrades: (cummulative): HL 49k; Low-e, double pane, vinyl windows 37k; Add R20 to bsmt walls 32k; Upgrade attic to R40 28k; Reduce ACH to 4.5 It gets even better, annual fuel consumption is reduced from 215 million btu to a mere 81, almost 2/3's. Can anyone here verify these calculations with empirical evidence? |
#5
|
|||
|
|||
On Tue, 01 Feb 2005 22:57:34 GMT, "Travis Jordan" wrote: Matt wrote: 'This may be too technical for alt.home.repair so I'm posting* here' Um, son, this may be too technical for you, but this IS is alt.home.repair And it wouln't be a good idea at all to post it where I think he was going to post it..... You mean my courses in differential calculus and tensor analysis aren't good enough for alt.home.repair? Wow. This is a select crowd. Gary Dyrkacz Radio Control Aircraft/Paintball Physics/Paintball for 40+ http://home.attbi.com/~dyrgcmn/ |
#6
|
|||
|
|||
Martik wrote:
This may be too technical for alt.home.repair so I'm posting he In alt.home.repair? Natural Resources Canada uses the following program to calculate rebates... ACH @50kpa: 10.35 (ACH = air changes/hour) Boom. Haven't we seen this before? Nick |
#7
|
|||
|
|||
"Gary Dyrkacz" wrote in message ... On Tue, 01 Feb 2005 22:57:34 GMT, "Travis Jordan" wrote: Matt wrote: 'This may be too technical for alt.home.repair so I'm posting* here' Um, son, this may be too technical for you, but this IS is alt.home.repair And it wouln't be a good idea at all to post it where I think he was going to post it..... You mean my courses in differential calculus and tensor analysis aren't good enough for alt.home.repair? Wow. This is a select crowd. Touchy bunch in here today So, I posted to the wrong group SORRY, I know none of you EVER make a mistake. Now how about a helpful reply? |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Heating and Cooling Load Analysis | Home Repair | |||
DIY Heat Bank/Thermal Store system? (longish) | UK diy | |||
Mixing header and pumps | UK diy | |||
A quick question. | UK diy | |||
Condensing boiler - odd installation | UK diy |