Analytical Researches of the Energy Efficiency of Natural Ventilation
Journal Title: Вентиляція, освітлення та теплогазопостачання - Year 2016, Vol 20, Issue
Abstract
The price of all kinds of energy rises, so there is a topical problem of energy efficiency in construction. Estimation of energy efficiency in the natural ventilation with gravitational motive allows more complete calculation of energy efficiency of buildings with such systems, which have been commonly used and which are used today in the post-socialist countries. A generalized physical model of the natural ventilation with gravitational motive is accepted. Air receives thermal energy from the microclimate providing systems, equipment and lighting that consume non-renewable energy, as well as people, animals etc. Part of this energy is lost through the building envelope, the other part is energy source for natural ventilation. Part of this energy is usefully consumed for the air movement, the other part causes thermal pollution of the atmosphere. It is determined that the efficiency factor of the natural ventilation systems with gravitational motive for height H = 1...100 m is 0.0034...0.000034. It is concluded that the natural ventilation with gravitational motive has low energy efficiency and the systems may be renovated with mechanical motive and heat recovery. Therefore, for hot shops, for which the mechanical ventilation is impossible, it is necessary to seek ways for better use of surplus heat
Authors and Affiliations
V. Mileykovskyi, H. Klymenko
Keywords
Related Articles
- EP ID EP556974
- DOI -
- Views 81
- Downloads 0
Numerical Simulation of Combustion Processes of Solid Fuel in a Furnace with Counter-Current Twisted Streams
The purpose of the work is numerical research of the powdered peat processes in a cylindrical vortex furnace with counter current twisted flows. The results of computer simulation has been presented for burning processes...
Mathematical Model and Method for Calculating the Dynamics of Drying Biomass at the Production of Pellets
All types of biomass (straw, stalks of corn, sunflower, wood shavings, energy willow, sorghum, miscantus) are colloidal capillary-porous bodies, drying of which is carried out in a high-temperature drying agent and invol...
An Analytical Study of the Efficiency of the Natural General Ventilation of Cattle Building
Operating costs for the work of general ventilation systems is about 30 % in the energy balance of premises for keeping cattle. The possibility of increasing the efficiency of general ventilation of the premises for keep...
Calculating the Efficiency of Solar Radiation Energy Usage in the Heating Systems Based on the Transformation of the Integrated Energy in Typical Low-Temperature Energy Sources
The possibility to increase the effectiveness of the solar radiation energy usage up to 30^40 percent was established. This result was achieved by heating the energy source with increased flow rate during the expanding o...
Thermomodernization of Heat Conductive Inclusions of Adjoining at Installation of Energy Efficient Windows
The presence of significant heat loss at adjoining of windows to wall-mounted enclosures is established by thermal imaging of facades of residential buildings. This indicates the non-conformity of those values with the s...