Abstract
The sustainability of human civilization depends largely on green energy management. This work represents one way to achieve this goal. The work is devoted to converting microwave radiation to heat. The article analyses different ways of heating residential and utility areas. Materials suitable for converting microwave radiation to heat from ceramic composites, concretes, fire clays, and bauxite with water glass are enclosed. For all materials we have measured DTA/TG (Differential Thermal Analysis/Thermogravimetric Analysis) curves, XRD (X-Ray Diffraction) patterns, chemical composition of samples, the specific heat capacity cp [J/kg.K], thermal conductivity k [W/m.K] and diffusivity α [m2/s-1]. The cooling curves of these materials after microwave heating are characterized in detail. The paper also presents a description and construction of a microwave reactor together with the parameters of the living space heating.
Highlights
Energy consumption for heating in a family house currently accounts for about 70% of the total consumption
For a low-energy and passive house, the Blower door test, which characterize the air-tightness of building envelope [14], is very important
It is very important to measure thermophysical properties of wooden materials, which are the main parts of a wooden building envelope and which directly affect heat losses through the building envelope, which the authors measured in [15]
Summary
Energy consumption for heating in a family house currently accounts for about 70% of the total consumption. For energy-efficient houses, it is most important to ensure the lowest possible heat loss. The first factor is the necessity to achieve the smallest object surface possible for a given volume and the second factor is the reduction of potential thermal bridges These two considerations result in the ideal shape of a ball, respectively a hemisphere [1]. A typical conventional heat is supplied, for instance, by a radiator or a typical electric heater (convector), through heating the air in its neighbourhood At their surface temperature of 90 ◦C, infrared panel heaters radiate at the wavelength of approximately 9 to 10 μm, which is a suitable component for the human organism, influencing the growth of organism cells and psychological comfort. The functionality and economic aspects of this process are verified in a special converter developed for this purpose
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