Conduction Through Walls: R-Values in Series & the U-Value
This lesson is part of the course
In this lesson
You add up the thermal resistances of a five-layer workshop wall, turn them into a U-value and calculate the heat flow on a cold day.
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Lessons in this course
- Units & Specific Heat: Q = m·c·ΔT in J, kJ and kWh Locked
- Conduction Through Walls: R-Values in Series & the U-Value Locked
- Heat Loss of a Building: UA × ΔT, Design Load & Degree-Days Locked
- Convection & Radiation: h·A·ΔT and Stefan-Boltzmann Locked
- Heat Exchangers: Duty, LMTD & Required Area (Counterflow vs Parallel) Locked
- Cooling Curves: Newton's Law of Cooling, the Time Constant & a Chart Locked
- First Law & Efficiency: Heat Engines, Heat Pumps, COP & the Carnot Limit Locked
- Insulation Upgrade Payback: Energy Saved, Cash Flow & a Payback Chart Locked