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Unheated basement @basics:building_physics_-_basics:thermal_bridges:tbcalculation:examples
11 Hits, Last modified: 3 years ago
principles ===== Active temperature control does not take place in unheated basements. As a rule, lowe... sary. In energy balances the unheated basement is not taken into account in the treated floor area, but... ion between the basement and the interior space, another Ψ-value must be calculated for the energy bala... f the basement is unknown, therefore $L_{2d}$ cannot be calculated directly, but with the use of $L_{u
Exterior wall on floor slab @basics:building_physics_-_basics:thermal_bridges:tbcalculation:examples
9 Hits, Last modified: 3 years ago
:aussenwand_auf_bodenplatte_abb_5.png?800 |}} **Note!** //Before preparing the calculation model, it ... mple, blinding layers can be disregarded which do not have any significant insulating effect on account... e $L_{2d}$. If the actual size of the building is not known, B‘ can be selected for the option B, but it should not be too small ($B' > 5 \, \text{m}$). $B' = 7{,}99
Recommended procedure for calculating thermal bridges of components in contact with the ground @basics:building_physics_-_basics:thermal_bridges:tbcalculation:ground_contact
7 Hits, Last modified: 6 years ago
n the Ground worksheet of the PHPP. The PHPP does not use heat flow simulations for this and instead us... orm recommends a floor slab length of 4 metres. **Note!** The reference dimensions have become mixed up... ith Option A, the norm DIN EN ISO 10211 contains another possibility for calculating corresponding Ψ-va... ts in contact with the ground described above are not necessary. When calculating the Ψ-value, they mus
Special features and characteristics of components in contact with the ground @basics:building_physics_-_basics:thermal_bridges:tbcalculation:ground_contact
6 Hits, Last modified: 3 years ago
n the case of components with ground contact does not differ from that for other thermal bridges. Howev... temperatures around freezing point initially does not remain as snow on the ground. Nonetheless, exact ... R = λ/d because the ground around a building does not represent a homogeneous building component layer.... wo-dimensional transient numerical calculation is not so high that this extra effort can also be justif
Heated basement @basics:building_physics_-_basics:thermal_bridges:tbcalculation:examples
5 Hits, Last modified: 3 years ago
{{ :picopen:beheizter_keller_abb_6.png?500 |}} Note: this is not a thermal bridge free connection. In the example given here it is relatively clear that ... nt wall connection to the basement floor slab has not been implemented in an ideal manner. One would a... as thermal bridge free? Strictly speaking, one cannot consider both these connections separately from e
Basic principle for calculating thermal bridges
4 Hits, Last modified: 3 years ago
boundary conditions for the temperatures, it does not matter which temperatures are set for the inside ... tures and thermal capacities of the materials are not taken into account in the steady-state simulation... minimum surface temperatures ascertained thus do not have any informative value. The above-mentioned b... he temperature are rough estimates at best and cannot really depict realistic temperature differences.
Software for calculating thermal bridges
3 Hits, Last modified: 3 years ago
ources and heat sinks} \end{align} </WRAP> It is not possible to solve this partial differential equat... uracy regardless of the method used. It should be noted that not every software program can perform calculations in a non-steady state, i.e. time-independen
Interior walls on floor slabs @basics:building_physics_-_basics:thermal_bridges:tbcalculation:examples
2 Hits, Last modified: 4 years ago
because the "insulating effect" of the ground is not taken into account (see Figure 1). As a matter of... conductances with and without the interior wall. Another advantage is that the surface temperatures det

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