wellcold
12-12-2001, 06:31 PM
Equipped to survive
An easy load calculation problem I thought, as I was toying with the idea of winter insulating my igloo tent, so that ideally, the body heat of one person will heat the inside to a comfortable temperature, with outside temperatures of –40 degree Celsius
If it is possible.
How thick would I need the insulation to be if it was polyurethane?
The igloo tent is 2 meters by 1.3 meters with an apex height of 1.3 meters.
In my college days I could have worked it out by applying cold store cooling load formulas Q=MC (T1-T2) I don’t know the respiration heat of humans or the U value of polyurethane and am vague about the implications of infiltration loads. (Leaving or entering the insulated area)
I am going to need to consider other air conditioning factors as well.
In the artic, snow holes with 1 meter of overhead snow insulation provide a comfortable environment with the heat of a candle and has a cold trap area dug below the living area. If you’re below the tree line brushwood bevies and firewalls debatably provide a comfortable environment with an all night fire watch.
I am not sure of the utility or practicality of insulated, perhaps air conditioned tents turned into lightweight environmental survival capsules.
Easy load calculation problem! Forget it
www.swandomestics.co.uk
An easy load calculation problem I thought, as I was toying with the idea of winter insulating my igloo tent, so that ideally, the body heat of one person will heat the inside to a comfortable temperature, with outside temperatures of –40 degree Celsius
If it is possible.
How thick would I need the insulation to be if it was polyurethane?
The igloo tent is 2 meters by 1.3 meters with an apex height of 1.3 meters.
In my college days I could have worked it out by applying cold store cooling load formulas Q=MC (T1-T2) I don’t know the respiration heat of humans or the U value of polyurethane and am vague about the implications of infiltration loads. (Leaving or entering the insulated area)
I am going to need to consider other air conditioning factors as well.
In the artic, snow holes with 1 meter of overhead snow insulation provide a comfortable environment with the heat of a candle and has a cold trap area dug below the living area. If you’re below the tree line brushwood bevies and firewalls debatably provide a comfortable environment with an all night fire watch.
I am not sure of the utility or practicality of insulated, perhaps air conditioned tents turned into lightweight environmental survival capsules.
Easy load calculation problem! Forget it
www.swandomestics.co.uk