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Heating load in Passive Houses
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ive factor: a certain amount of heat can be distributed with very little effort via the supply air comi... nd reduces the investment required for heat distribution to a minimum. These cost savings can then be r... lf. However, the amount of heat that can be distributed via the fresh air system without any additional... ed the available capacity of the supply air distribution system will no longer require other heat distr
What defines thermal bridge free design?
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sfer coefficient U** and the thermal bridge contributions ($\varPsi \cdot l$) together with $\chi $. As the punctiform contributions are generally insignificant, they will not be... free design” can be defined as follows: the contributions provided by thermal bridging are smaller than... These may still result in certain positive contributions, which can however be regarded as "negligibly
Adaptive versus Heat Balance Comfort Models @basics:building_physics_-_basics:thermal_comfort
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rely on a physiological model of the human body, but relate e.g. comfort temperatures and ambient temp... ectly** not only from actual votes “comfortable”, but from all votes in the experiment. In particular, ... uipped with a category scale, subjects will distribute the stimuli more or less evenly across this scal
Unheated basement @basics:building_physics_-_basics:thermal_bridges:tbcalculation:examples
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not taken into account in the treated floor area, but it does represent an additional heat transfer res... herefore $L_{2d}$ cannot be calculated directly, but with the use of $L_{ue}$ it is possible to expres... es can be ascertained as in the previous variant, but again with the aid of three simulations. ==== Ca
Recommended procedure for calculating thermal bridges of components in contact with the ground @basics:building_physics_-_basics:thermal_bridges:tbcalculation:ground_contact
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re not only dependent on their component build-up but also on their dimensions and position in the grou... ensional heat flow issue (three-dimensional distribution of the soil around the building) to a two-dime... ot absolutely necessary for determining Ψ-values, but this is necessary for a two-dimensional dynamic c
Definition and effects of thermal bridges @basics:building_physics_-_basics:thermal_bridges
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end not only on the influence in terms of physics but also on how they are taken into account. Thus, in... s and other furniture not only disrupt convection but also restrict radiant exchange with the surroundi
Local thermal comfort @basics:building_physics_-_basics:thermal_comfort
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surface tempera-\\ tures are already below 14 °C. But there are also\\ noticeable thermal bridges due t... and ankles of a seated person is less than 2 °C - but only if the ** effective average U-value of the e
Exterior wall on floor slab @basics:building_physics_-_basics:thermal_bridges:tbcalculation:examples
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s not known, B‘ can be selected for the option B, but it should not be too small ($B' > 5 \, \text{m}$)... metric thermal bridge effect in the classic sense but also includes other effects besides the insulatio
Heat transfer
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ts (like a window or a roof) are quite airtight - but a lot of heat is transferred by heat conduction.
Basic principle for calculating thermal bridges @basics:building_physics_-_basics:thermal_bridges:tbcalculation
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emperature can be performed using the same model, but other boundary conditions should be selected in e
Heated basement @basics:building_physics_-_basics:thermal_bridges:tbcalculation:examples
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areas further away are therefore less meaningful, but are usually on the safe side because in reality t
Interior walls on floor slabs @basics:building_physics_-_basics:thermal_bridges:tbcalculation:examples
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Modelling of the exterior wall can be omitted, but adiabatic cutting of the front surface of the flo
Special features and characteristics of components in contact with the ground @basics:building_physics_-_basics:thermal_bridges:tbcalculation:ground_contact
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t insulation, i.e. floor slab without insulation, but with a strip of insulation all around the buildin