Abstract* gerlich@fai.utb.cz, tel.: +420 57 603 3012The main purpose of this article is a presentation of software validation for a calculation of heat transfer in Greek symbolsDensity (kg/m 3 )

The main idea of this article is taking advantage of heat energy accumulation in building walls in order to design more effective heating system. Essential article goal is to simulate thermal construction responses in dependence on changing boundary conditions. Model geometry has been developed in virtual design studio CATIA and implemented in numerical simulation software COMSOL Multiphysics, with the intention to predict environmental temperature precisely. A threedimensional finite element model of laboratory was developed with the aim of achieving detail energy transfer in the real buildings during the transient process in the walls and internal air. On the contrary, many articles utilizing water or wax energy storage to decrease heating/cooling costs this work is focused on future optimization of control strategy based on heat accumulation in walls without requirement of any additional material. In this paper simulated temperature development is analyzed in the building which is consequently verified by experimentally measured temperature data.

Over the past 10 years there have been rapid advances in wireless technologies and an importance of a radio frequency (RF) communication system is expanding day by day due to its advantages. In the meantime, a huge number of researchers are investigating from the various aspects of a such field. Electromagnetic wave propagation in an indoor environment and penetration trough environment medium is still under consideration. In this paper, we reveal a measured result from the different indoor environments for different transmitted power levels and frequencies. The experience can use to application of wireless communication between sensors.

No abstract

No abstract