Analysis of Thermal Bridges - Scottish Energy Systems Group ...

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Psi value Psi value = U factor * length of 2D model – sum of U values * length of flanking elements Psi value = 0.3922 - 0.12x2 - 0.10x2.324 = -0.0802W/mK Assumptions built into model: • C sections have not been included • Ceiling filler has not been included Scottish Energy Systems Group samuel@esru.strath.ac.uk
Miscellaneous notes It is possible to import images and *.dxf files as under lays (File > underlay) If a space is completely enclosed by polygons then the void can be filled by a polygon (Draw > fill void) Scottish Energy Systems Group samuel@esru.strath.ac.uk
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Scottish Energy Systems Group ... e
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Thermal Bridging Effect of Thermal
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References • Applicable standard
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Types of Thermal Bridges 3. Systema
Page 9 and 10: Theoretical Overview • One dimens
Page 11 and 12: Q One dimensional heat transfer Fou
Page 13 and 14: Standard Surface resistances Direct
Page 15 and 16: When is three dimensional analysis
Page 17 and 18: Linear thermal transmittance (ψ or
Page 19 and 20: H H TB TB = ΣLψ = yΣ SAP calcula
Page 21 and 22: SAP calculations example H H TB TB
Page 23 and 24: SBEM calculations example Scottish
Page 25 and 26: 2D heat transfer software THERM Fre
Page 27 and 28: THERM 2 Solution Procedure A PC pro
Page 29 and 30: Worked Example Eaves detail (BRE 49
Page 31 and 32: BRE 497 Roof junction boundary cond
Page 33 and 34: Working with THERM Open BRE Validat
Page 35 and 36: Important notes A THERM model conta
Page 37 and 38: Technical Parameters Select Options
Page 39 and 40: Isotherms Scottish Energy Systems G
Page 41 and 42: Temperature Scottish Energy Systems
Page 43 and 44: Calculation of f value f min = T in
Page 45 and 46: Materials library Select Libraries
Page 47 and 48: Boundary Condition library Select L
Page 49 and 50: Inputting geometry Set snap on: Opt
Page 51 and 52: Model Attribution (BC) 1. Click on
Page 53 and 54: 4. Rerun simulation 5. Press the U
Page 55 and 56: PassivHaus construction example AWm
Page 57 and 58: Construction DAm02 DAm02: 1. PE sea
Page 59: U factors Define these two surfaces
Page 63 and 64: Worksheet • Q4. What are the dime
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