reminder on the u-value calculation: based on the conductivity of … · 2020. 2. 26. · reminder...

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Reminder on the u-value calculation: Based on the conductivity of the elements; that is the rate at which that element resists the transfer of heat for it’s thickness U-value = 1 Rsi + d1/λ + d2/λ+Rse Rsi & Rse=Thermal resistance at interior & exterior surfaces D = thickness (in metres) λ = thermal conductivity of the material (w/mK). Reinforced concrete approx 2.1W/mK EPS 0.035 W/mK

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Page 1: Reminder on the u-value calculation: Based on the conductivity of … · 2020. 2. 26. · Reminder on the u-value calculation: Based on the conductivity of the elements; that is the

Reminder on the u-value calculation:

Based on the conductivity of the elements; that is the rate at which that element resists the transfer of heat for it’s thickness

U-value = 1

Rsi+d1/λ+d2/λ…+Rse

Rsi & Rse=Thermal resistance at interior & exterior surfaces D = thickness (in metres) λ = thermal conductivity of the material (w/mK). Reinforced concrete approx 2.1W/mK – EPS 0.035 W/mK

Page 2: Reminder on the u-value calculation: Based on the conductivity of … · 2020. 2. 26. · Reminder on the u-value calculation: Based on the conductivity of the elements; that is the

U-Value Calculation – by hand!

U-value = 1

Rsi+d1/λ+d2/λ…+Rse

Rsi & Rse=Thermal resistance at interior & exterior surfaces D = thickness (in metres) λ = thermal conductivity of the material (w/mK). Reinforced concrete approx 2.1W/mK – EPS 0.035 W/mK

Page 3: Reminder on the u-value calculation: Based on the conductivity of … · 2020. 2. 26. · Reminder on the u-value calculation: Based on the conductivity of the elements; that is the
Page 4: Reminder on the u-value calculation: Based on the conductivity of … · 2020. 2. 26. · Reminder on the u-value calculation: Based on the conductivity of the elements; that is the
Page 5: Reminder on the u-value calculation: Based on the conductivity of … · 2020. 2. 26. · Reminder on the u-value calculation: Based on the conductivity of the elements; that is the

h-ps://www.ecologicalbuildingsystems.com/Ireland/Products/Product-Detail/Calstherm-Board

Page 6: Reminder on the u-value calculation: Based on the conductivity of … · 2020. 2. 26. · Reminder on the u-value calculation: Based on the conductivity of the elements; that is the

h-ps://www.isover.ie/soluEons/opEma-dry-lining-system

Page 7: Reminder on the u-value calculation: Based on the conductivity of … · 2020. 2. 26. · Reminder on the u-value calculation: Based on the conductivity of the elements; that is the

h-ps://www.isover.ie/soluEons/opEma-dry-lining-system

Thicknesses:50mm100mmor160mm