🗊Презентация Assignment thermal conductivity calculation

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Assignment thermal conductivity calculation, слайд №1Assignment thermal conductivity calculation, слайд №2Assignment thermal conductivity calculation, слайд №3Assignment thermal conductivity calculation, слайд №4Assignment thermal conductivity calculation, слайд №5Assignment thermal conductivity calculation, слайд №6Assignment thermal conductivity calculation, слайд №7Assignment thermal conductivity calculation, слайд №8Assignment thermal conductivity calculation, слайд №9Assignment thermal conductivity calculation, слайд №10Assignment thermal conductivity calculation, слайд №11Assignment thermal conductivity calculation, слайд №12
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Home energy audit assignment HURRAY! – with some thermal transfer calculation DUE: 16 October 2016 Instructions on Building energy Auditing will be delivered on Oct 14 You will present your audit findings on Oct 16th
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Home energy audit assignment HURRAY! – with some thermal transfer calculation DUE: 16 October 2016 Instructions on Building energy Auditing will be delivered on Oct 14 You will present your audit findings on Oct 16th

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Carry out your home energy audit Follow the checklist (on Moodle) https://www.ase.org/resources/home-energy-audit Skip sections irrelevant to your households Use the energy audit data collection table (on Moodle) Calculate the U-values of your building envelope Use the science part of the class (slides) Use the catalog of insulation materials (on Moodle) Refer to advisory handbook for insulation (if you don’t know what your wall is) Recommend energy efficiency improvements Recalculate your envelope U-values after energy efficiency added Aim for no less than R= 2.2 m2·°C/W
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Carry out your home energy audit Follow the checklist (on Moodle) https://www.ase.org/resources/home-energy-audit Skip sections irrelevant to your households Use the energy audit data collection table (on Moodle) Calculate the U-values of your building envelope Use the science part of the class (slides) Use the catalog of insulation materials (on Moodle) Refer to advisory handbook for insulation (if you don’t know what your wall is) Recommend energy efficiency improvements Recalculate your envelope U-values after energy efficiency added Aim for no less than R= 2.2 m2·°C/W

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Lambda (λ) Thermal Conductivity The value of lambda λ (W/m. օC) = is the insulation value of the material. E.g.՝ Thermal conductivity of polystyrene W/mօC = 0.028 - 0.035 The lower the lambda, the higher the insulation worth of the material (mind the thickness).
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Lambda (λ) Thermal Conductivity The value of lambda λ (W/m. օC) = is the insulation value of the material. E.g.՝ Thermal conductivity of polystyrene W/mօC = 0.028 - 0.035 The lower the lambda, the higher the insulation worth of the material (mind the thickness).

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R-value. Thermal resistance Lambda values  (λ), combined with information on the thickness of material, represent the thermal resistance of individual materials used in the building envelope, or their R-value. Thickness measured in m2·°C/W       λ The higher the R-value, the better it resists the heat transfer. The cumulative thermal resistance of a mixed structure is comprised of individual R-values of the layers in the structure.
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R-value. Thermal resistance Lambda values  (λ), combined with information on the thickness of material, represent the thermal resistance of individual materials used in the building envelope, or their R-value. Thickness measured in m2·°C/W       λ The higher the R-value, the better it resists the heat transfer. The cumulative thermal resistance of a mixed structure is comprised of individual R-values of the layers in the structure.

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Assignment thermal conductivity calculation, слайд №5
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Calculating U-Values Start by calculating the thermal resistances of each element (R-values). The R-value is the thickness of the product in metres ÷ Lambda (thermal conductivity). Add the R-values of all materials used in the application (including any air gaps) and calculate the reciprocal. The reciprocal = 1 ÷ total of all R-values Example:  PIR Board 0.022 W/mK100mm thick + Glass Fibre Roll 0.044 W/mK100mm thick Total combined R-value = 4.54 + 2.27 = 6.81 m2K/W  U-value = 1 ÷ 6.81 = 0.147 W/m2K
Описание слайда:
Calculating U-Values Start by calculating the thermal resistances of each element (R-values). The R-value is the thickness of the product in metres ÷ Lambda (thermal conductivity). Add the R-values of all materials used in the application (including any air gaps) and calculate the reciprocal. The reciprocal = 1 ÷ total of all R-values Example:  PIR Board 0.022 W/mK100mm thick + Glass Fibre Roll 0.044 W/mK100mm thick Total combined R-value = 4.54 + 2.27 = 6.81 m2K/W  U-value = 1 ÷ 6.81 = 0.147 W/m2K

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Efficient window features
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Efficient window features

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Features of Selected Window Types
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Features of Selected Window Types

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Assignment thermal conductivity calculation, слайд №9
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Assignment thermal conductivity calculation, слайд №10
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Assignment thermal conductivity calculation, слайд №11
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Слайд 12


Assignment thermal conductivity calculation, слайд №12
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