A local company makes SIPS panels so it's likely my house walls would be either 6 5/8" SIPS panel or a 8 3/8" panel (R23 and R29 respectively). Roof SIPS will be 12 3/8" or R45-50 (depending on who's charts you look at).
The question really is this; when going through Yasin's formula Q = G*V*DT with Q being the heat losses (W), G being the insulation factor, V the volume of the house (m3), and DT the required difference of temperature between the exterior and the interior (°C) Is there a factor or conversion to translate R-values to his "classical values"? (listed below)
- 1.8 for an old, leaky, stone and clay mortar house (classical french farmhouses) - 1.6 for a house in bricks, stones or breeze blocks without insulation - 1.4 for a house insulated with 4 cm of polystyrene - 1.2 for a house insulated with 10 cm of polystyrene - 0.8 for a recent house with 37 cm thick insulating clay bricks for example - 0.5 for a strawbale house for example
If I just missed it somewhere on the forums here can someone point the new guy to that thread? Thanks!
Post by Dan (Upstate NY, USA) on Apr 5, 2019 4:47:58 GMT -8
R value is one thing, you can have walls with an R-value of R40 and R60 roof, but if it leaks air those extreme insulating values mean nothing.
I have a very tight house (tested by New York State taxpayer's money) with all but one wall at R40 and the whole roof at R60.
As I have upgraded the house over the years I noticed the law of diminishing returns when it came to R value. When making the house more air tight had a much larger effect on wood usage.
When I had the house tested I was told to not make it anymore air tight or it would become unhealthy. So I made an heat exchanger that used stove exhaust air to preheat incoming air and closed some other gaps in the house.
Sometimes this is too little fresh air makeup since if I turn on the cooking stove exhaust fan, with the dryer running it can suck the rocket mass heater backwards when its not running...!
kkp: Mercedes: Benches don't get real hot. In fact, they are rather cool compared to other areas. You shouldn't need a mix like you described
Jun 7, 2018 18:10:52 GMT -8
maartenmartens: beste Peter, ik heb je eergisteren een mail gestuurd via het contact formulier op je website , heb je die goed ontvangen ? mvg Maarten Martens, architect - geobioloog (mail betreffende de bouw van onze eigen RMH)
Jun 20, 2018 13:21:57 GMT -8
martinm: any one here with info \ experience with heat (from a mass heater) distribution with ducts throughout two storey house ?
Sept 8, 2018 22:58:52 GMT -8
padica: Good morning, this is a wonderful subject, please someone can help me with the theme of double and triple combustion, how it is achieved, theory and design, thank you
Sept 15, 2018 7:13:40 GMT -8
wiscojames: I'm afraid you won't get a response to such a vague question - I suggest reading through some of the threads related to your questions before asking for an explanation. People will be very generous with their knowledge if your question is more specific.
Sept 18, 2018 4:48:00 GMT -8
daniel: in my experience as I am working now on something of that nature, I have thought of making a heat exchanger and distributing the heat through vents using a slower fan. Now after a few years I realize that mass heaters give out primarily radiant heat, for
Nov 30, 2018 12:48:38 GMT -8
coastalrocketeer: Anyone posting in this shout box... if you have something you want people to see and respond to, create a thread in the appropriate forum section... this is not the place...
Dec 16, 2018 18:10:49 GMT -8
vesuvius: High Temperature Glass options,
Jan 4, 2019 16:28:17 GMT -8
vesuvius: Do any of you have experience with using the glass from home oven doors on a rocket stove? I'd like to have a viewing port on my stove but don't want to fork out for new ceramic glass. Any thought as to whether it would take the heat of a rocket stove?
Jan 4, 2019 16:30:40 GMT -8
yaya: you dont need the blowair for that temp..
Jan 13, 2019 16:43:57 GMT -8
flybywire: Glass window from an old washing machine is designed to take high temps. Cheap solution to your need.
Jan 27, 2019 0:10:58 GMT -8
coastalrocketeer: Anyone posting in this shout box... if you have something you want people to see and respond to, create a thread in the appropriate forum section... this is not the place to have a discussion... it is for short announcements
Feb 7, 2019 0:11:23 GMT -8
coastalrocketeer: you won’t likely get replies to questions here, and it is not a spot that makes holding an ongoing discussion possible...
Feb 7, 2019 0:12:22 GMT -8
TexasGonzo: Sooooo glad I found this site! Its always rewarding to find such a super group of folks! To any and all, feel free to PM me anytime. Thanks for having me!
Mar 11, 2019 18:56:41 GMT -8
jlmtech: GADGET: CONSIDER USING A JET PUMP INSTEAD OF A BLOWER FAN TO INDUCE DRAFT; NO CLOGGING.
Mar 26, 2019 8:19:28 GMT -8
michaelegan: i am unable to open the sketchup files on my mac. I used sketchup a few years back but apparently the company now requires a subscription. does anyone have any advice/instructions on how to use the program or how to view pictures without spending money?
Aug 20, 2019 18:41:48 GMT -8
mannytheseacow: michaelegan: download AutoCAD student version for free... import .SKP
Aug 23, 2019 13:33:44 GMT -8
topbaza: hi everyone, been searching all over net and this is were i need to be i think!!
Sept 28, 2019 6:16:25 GMT -8