heat transfer

Моделювання термічного опору трав`яного шару зеленої покрівлі

Today the energy efficiency of roofs is achieved not only by the use of building materials, but also by planting. The main problems of modern urbocenoses is the lack of green areas and the inability to create them because of consolidation of area; strong decrease of biodiversity until the complete loss of certain plants and animal species, leading to ecological imbalances. The solution of this problem is to use alternative forms of landscaping that do not require large amounts of space, but at the same time fulfill the necessary sanitary and ecological and biological functions.

Obtaining and investigation of the conditions of heat transfer through inhomogeneous inclusion with heat sources

The conditions of nonideal heat transfer are obtained for a heat conduction problem of contacting layers through a thin heterogeneous sublayer (inclusion) with acting heat sources (heat sinks). These conditions include both thermal resistances of components of the inclusion and specific powers of heat sources in them. On this basis, the heat conduction problem with nonideal conditions of heat transfer without consideration of inner inclusion is written down. Their use ensures observable features of temperature and heat flux, i.e.