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Energy Master House

With this single-family home, the combination of solid construction with ThermoShield Exterieur and infrared heating with ThermoShield Interieur ensures an exemplary feel-good climate and excellent energy efficiency. Measurements prove the effect of solar gains.


In the censored Wikipedia, the following is explained: "The definition equation assumes stationary conditions and is not suitable to calculate the instantaneous heat flux density q (t) at time-varying temperatures. For example, during a heating process, delay effects occur due to the heat storage capacity of the component, which are not taken into account in the attempt to calculate the surface heat currents by means of the equation. In the subsequent cooling process, however, the fault occurs in the reverse sense. When heating and cooling are symmetrical to each other, the two faults cancel each other out."

From this argumentation, it is deduced that ultimately it makes no difference whether the heat flow is stationary or transient. For this purpose, measurement graphs are shown, where an unsteady case is predicted by means of modulated temperature. This is the appropriate measuring device for the theory, but the outer wall is exposed to a few influencing variables more than just the outside temperature.

The weather also consists not only of the outside temperature. There is also a considerable difference between the arithmetic and the geometric mean (average and median).

The graph for the evaluation of the measuring series explains this clearly: the heating process is faster, the cooling process is slower. This is illustrated by the inclinations of the yellow and blue lines (no symmetry). This delay is due to the storage capacity. This means: energy gain. ThermoShield Exterieur reduces the energy losses across the facade and supports the solar gains over the external wall ("endothermic effects").

The Energy master house is located in the Austrian Eidenberg at 683 m above sea level. It has 53 cm thick walls out of 50 brickworks, trimmed inside and outside. The outside wall is coated with ThermoShield from the outside and inside, the rooms are heated by a ceiling or infrared heating system. A detailed description is available on the website .

By combining a proven design with highly efficient systems and products, a pleasant, comfortable indoor climate is created. The exterior wall coating reduces the heat losses and protects among others against driving rain. Because of the combination of an IR radiation heater and the IR-reflective inner coating, the heating costs are significantly reduced due to the improved thermal comfort.

Apart from photovoltaics and solar thermal energy, the concept implemented here does not fit into the theoretical distorted picture, as some regulations on heat protection, including the associated calculations, pretend. However, nothing is more honest than the practice. This is illustrated by the example of a series of measurements analysis for solar gains over the external wall.

From 10:00 to 17:00 (the figures are approx.) The effects of the solar irradiation are recognizable from 09:00 to 15:00 clock. Not only are solar gains made through the transparent components (heat gains through the windows) - solar gains are also made with opaque components. The plastered brick wall is opaque (i.e., not transparent), absorbing heat that is transported inward. This is a heat flow from outside to inside due to the solar gains.

From 10:00 to 15:00 the temperature rises 10 cm below the surface. From 13:00 to 17:00, such a high heat barrier (heat = temperature + material) is built up so that the room temperature is not higher than the temperature of this barrier. Without a temperature gradient, there is, according to first law of thermodynamics no heat flow. This means: from 13:00 hours for 4 hours there are no heat losses over the outside wall.

For the U-value theory, the memory component has been set to 0 in the Fourier heat equation; not because it is so in practice, but in order to calculate the theory: q = U (θi-θe).