Residential annual energy use. For a house with: Air exchange rate of 0.5 h−1 Cp = 1000 J/kg.K Density of air = 1.2 kg/m3 Roof area = 144 m2; opaque wall area = 96 m2; window area = 24 m2; volume = 360 m3 Conductivity of Uwall = 0.60 W/(m2-K); Uwin = 3.0 W/(m2-K); Uroof = 0.40 W/(m2-K) Heating system efficiency of 0.85 Heating degree days (HDD) of 3500 K-days Calculate the Ktot for this house. Calculate the annual energy used to heat this house (in GJ).

Residential annual energy use. For a house with: Air exchange rate of 0.5 h−1 Cp = 1000 J/kg.K Density of air = 1.2 kg/m3 Roof area = 144 m2; opaque wall area = 96 m2; window area = 24 m2; volume = 360 m3 Conductivity of Uwall = 0.60 W/(m2-K); Uwin = 3.0 W/(m2-K); Uroof = 0.40 W/(m2-K) Heating system efficiency of 0.85 Heating degree days (HDD) of 3500 K-days Calculate the Ktot for this house. Calculate the annual energy used to heat this house (in GJ).

Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)

5th Edition

ISBN:9781305084766

Author:Saeed Moaveni

Publisher:Saeed Moaveni

Chapter11: Temperature And Temperature- Related Variables In Engineering

Section: Chapter Questions

Problem 9P: Calculate the R-value for the following materials: a. 4 in. thick brick b. 10 cm thick brick c. 12...

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