The thermal conductivity of snow varies by how tightly packed it is, but for snow of 100 kg/m3 density ,it is about 0.045 W/m/°C or 0.026 Btu/hr/°F. A half foot of snow will thus have an R-value of 19. A typical igloo is about 12 ft to 15ft in diameter and so it has a surface area of about 300ft2 .(We will ignore the floor ). Igloolik ,Nunavut , Canada requires about 20,000 degree days (Fahrenheit units) for a typical year .Calculate how many kilowatt hours you would need to keep your igloo cozy.

The thermal conductivity of snow varies by how tightly packed it is, but for snow of 100 kg/m3 density ,it is about 0.045 W/m/°C or 0.026 Btu/hr/°F. A half foot of snow will thus have an R-value of 19. A typical igloo is about 12 ft to 15ft in diameter and so it has a surface area of about 300ft2 .(We will ignore the floor ). Igloolik ,Nunavut , Canada requires about 20,000 degree days (Fahrenheit units) for a typical year .Calculate how many kilowatt hours you would need to keep your igloo cozy.