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In: Physics

A one-story house is heated with natural gas, which gives off 3.890 107 J of energy...

A one-story house is heated with natural gas, which gives off 3.890 107 J of energy for every cubic meter of gas burned. Take the average temperature difference between the inside and outside for the 120-day heating season to be 12

Expert Solution

Surface area of the walls,

=204 m²

Area of the roofs,

Total area through which heat is conducted=204+100=304m²

Factors affecting are condcutivity, temperature difference between two sides of the material,thickness and surface area of the material.

Total heat required through 120 day of winter,

(a) Gass used in this 120 days,

(b)

Energy saved by installing fiber glass of thickness=8cm

Total cost saved,

in 1 year

Installation cost=400$

Payback time=400/68.27=5.85 yr

That means it will require more than 5 years i.e 6 years.

genius_generous answered 3 months ago

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