Fulltext results:
- Adaptive versus Heat Balance Comfort Models @basics:building_physics_-_basics:thermal_comfort
- eement that the main external physical parameters which determine thermal comfort are air temperature, ra... mfort: The first are the **heat balance models**, which basically assume that thermal comfort is achieved... y resulted in the international standard ISO 7730 which allows for the calculation of the predicted mean ... es, mostly in air-conditioned office buildings in which the predicted comfort temperatures have actually
- Exterior wall on floor slab @basics:building_physics_-_basics:thermal_bridges:tbcalculation:examples
- aring the calculation model, it should be checked which building component layers are relevant for the calculations and which can be disregarded. Thus for example, blinding layers can be disregarded which do not have any significant insulating effect on ... oorer rated values apply for perimeter insulation which is outside of the moisture barrier or sealing lay
- Heating load in Passive Houses
- easured in kilowatt hours (kWh)), the numbers for which are often easier to come by. ** The Passive Hou... it is only supposed to serve as a rough benchmark which may vary with different climatic conditions: in S... " only applies if there are no occupants present, which in turn leads to very minimal requirements. If oc... ee of uncertainty even in conventional buildings, which results from the fact that the internal heat flow
- What defines thermal bridge free design?
- y still result in certain positive contributions, which can however be regarded as "negligibly small".\\ ... rit]**// criterion is adequate for all structures which affect connections, edges, and individual interru... ere are many examples of construction systems for which all connection details that are normally required... lation in detail of less appropriate connections, which can be just as costly. There have been positive
- Unheated basement @basics:building_physics_-_basics:thermal_bridges:tbcalculation:examples
- een the heated interior space and the outdoor air which has to be taken into account. {{ :picopen:unbehe... y balance. Several methods exist for this purpose which are demonstrated on the basis of the following de... es with the boundary surface of the ceiling area, which usually is not true, of course. The difference to... ed as part of the overall heat flux in the model, which is relatively confusing or even impossible depend
- Special features and characteristics of components in contact with the ground @basics:building_physics_-_basics:thermal_bridges:tbcalculation:ground_contact
- d building component, the thermal conductivity of which influences the U-value of the component. However,... phpp_-_the_passive_house_planning_package |PHPP]] which takes into account the insulating effect of the g... l inertia depending on its mass. An exterior wall which absorbs heat throughout the day releases it again... ted using a harmonic linear thermal transmittance which should be determined by means of a transient stat
- Heat transfer
- transfer is the heat flow rate, that is the power which passes through one unit of area of a surface perp... emperature difference, the result will be a value which characterises the heat transfer capacity of the e... s growing, the more material (number of molecules which have to transfer heat to their neighbors) there i... re nothing more than very lightweight structures, which contain a lot of air (98 to 99,9%) using the low
- Local thermal comfort @basics:building_physics_-_basics:thermal_comfort
- (regardless of the external building component to which it is applied) the heat flow from the inside to t... : * Air speeds in the room (apart from leaks – which do not occur in the airtight Passive House anyway) are due to uplift at surfaces which have differing temperatures. Because of the small... paned low-e glazing (in a\\ newly fitted window), which has higher\\ surface temperatures (16 °C on avera
- Definition and effects of thermal bridges @basics:building_physics_-_basics:thermal_bridges
- ponents, there are two effects of thermal bridges which occur at each connection point between building c... thermal bridges with some remaining heat losses((which have to be accounted for)), such massive temperat... nternal insulation, however, is a special case in which there are even more stringent rules "how to avoid
- Basic principle for calculating thermal bridges @basics:building_physics_-_basics:thermal_bridges:tbcalculation
- nditions for the temperatures, it does not matter which temperatures are set for the inside and outside a... d radiation exchange at corners, edges and walls, which ultimately leads to lower surface temperatures. T... ry conditions for the temperatures must be used, which ultimately leads to a static temperature field in
- Heated basement @basics:building_physics_-_basics:thermal_bridges:tbcalculation:examples
- cification of $\Psi_{lower}$ and $\Psi_{upper }$, which is desirable in practical application, is justifi... 0-(-10)} = 0{,}72} $$ </WRAP> **Note!** //areas which are near the ground surface are subject to bigger temperature fluctuations than those which are further away from the surface. The steady-sta
- Recommended procedure for calculating thermal bridges of components in contact with the ground @basics:building_physics_-_basics:thermal_bridges:tbcalculation:ground_contact
- his and instead uses special analytical functions which provide almost the same values. However, these ap... -value, they must then be depicted using U-values which already include the influence of the ground. Thes... {bw}$ for basement walls, found in the rows 55-58 which are hidden). These values can only be determined
- Thermal comfort parameters @basics:building_physics_-_basics:thermal_comfort
- termining factors for the thermal surroundings**, which are as follows: * air temperature * the... * By improving thermal insulation (regardless of which external building building component, e.g. wall,
- Software for calculating thermal bridges @basics:building_physics_-_basics:thermal_bridges:tbcalculation
- nalytically. However, for a time-independent case which is one-dimensional with constant boundary conditi... sted methods. Typical heat flow software programs which can be used for building engineering applications
- Interior walls on floor slabs @basics:building_physics_-_basics:thermal_bridges:tbcalculation:examples
- er, this requires a three-dimensional calculation which will be too time-consuming in most cases. As a two-dimensional approximation, which is also used in the context of certification for