City Guilds Model Questions Vol1 2018 Engineering Question 43
Practice objective / multiple choice question 43 from the 2018 City Guilds Model Questions Vol1 Engineering examination.
A composite wall consists of (from inside to outside) plaster 20 mm thick (k=0.7 W·m⁻¹·K⁻¹), insulation 50 mm thick (k=0.04 W·m⁻¹·K⁻¹), and brick 100 mm thick (k=0.72 W·m⁻¹·K⁻¹). The indoor air temperature is 20°C with a convective coefficient \(h_i=10\) W·m⁻²·K⁻¹, and the outdoor air temperature is -5°C with \(h_o=25\) W·m⁻²·K⁻¹. Calculate the steady‑state heat loss per square metre of wall area.
Answer Options
About This Question
This is City Guilds Model Questions Vol1 2018 Engineering Question 43. It is one of the objective questions from the 2018 City Guilds Model Questions Vol1 Engineering examination.
Difficulty level: Medium .
Master the Exam!
You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.