Keyword: «heat exchange»

Authors:

A. Kyrilko,

F. Popenko,

U. Hoholov,

E. Romanova

The work is devoted to the freezing of thawed bulk soils of a slope held by a gabion wall in a cryolithozone with seasonal cooling devices. To assess the effectiveness of artificial freezing of slope soils, a three-dimensional mathematical model of heat exchange processes has been developed, taking into account the phase transitions of moisture and the dynamics of atmospheric air. Numerical calculations have shown the effectiveness of using seasonal cooling cooling devices to increase the stability of the bulk slope.

Keywords: mathematical model, temperature regime, fill soils, seasonal cooling devices, heat exchange, permafrost zone, stefan's problem, gabion wall.

Energy saving in budgetary organizations through the use of low-emission film on windows

Authors:

Sergei Panchenko,

Ivan Organov,

Mariya Demchenko

The article is devoted to the study of energy saving possibilities in budget institutions, such as cultural centers, through the use of low-emission films on windows. The main methods of heat transfer through glazed surfaces, the features of the thermophysical properties of energy-saving glasses and films are considered, and the effectiveness of their use is analyzed. Data on reducing heat loss and saving money on heating are provided, as well as recommendations on the implementation of these technologies.

Keywords: energy efficiency, energy saving, heat exchange, budget organizations, low-emission films