Magazine of Civil Engineering, №2(37), 2013
Hydraulics. Heat engineering. Building systems
for this half-year
Until recently in many
countries the external design parameters are determined quite equally,
by arbitrarily given provision (probability of non-exceedance).
that come from the study, take into account all the complex of
system, technological, climatological, hygienic, static, dynamic and
probabilistic. In particular it is proved, that rather essential
that generally is not taken in account in computation, is outside air
consumption in the compound with recirculated air.
O.D. Samarin, I.I. Tishchenkova
In this work processes of non-stationary heat
exchange in the room served by automated climatic systems are
considered. Modern methods of calculation of a thermal mode of
a room are stated. The interrelation between separate parameters of
stability of a room and automatic control of microclimate providing
V.Yu. Polovnikov, V.A. Huzeev
The laws of heat transfer in the system and the
factors influencing the intensification of heat losses are established.
revealed that the regulatory calculation method of pipelines’
heat losses gives
overestimated values. It was found that the heat losses of pipelines
ground freezing in the laying zone rise by 1.65–5.04%.
Ventilated facades solve at least two topical
problems for civil engineering: it allows reducing the humidity
of water vapor) on warmed wall surface and reducing heat losses from
the environment. The motivation of a choice of the sizes of the
vertical ventilated channel of ventilated facades in the conditions of
free-convective flow is given in the present article and it is based on
results of numerical experiments run on real ventilated designs.
M.R. Petrichenko, M.V.
The aim of this work was to assess the hydraulically optimum
holes in the hinged facades of the buildings and structures. Thus, it
was found that for any ventilated facade there is an optimum
distance from the screen to the wall which is defined by the height of
conditions of transfer of heat and resistance to the free-convective
the ventilated space.
A.M. Kalyakin, E.V. Chesnokova
Until now the main
obstacle to the application of the method of dimensional analysis in
classic form was a multifactorial problem (with many arguments), the
of which was rather difficult and sometimes impossible. In order to
these difficulties, the authors of this study proposed a simple method
application of the combined option avoiding these difficulties.
There were obtained
criteria, which make it easy to identify the areas with negative
viscosity using empirical formulas. Application of the proposed
criteria to the most noted empirical formulas revealed the record of
S.A. Isaev, N.I. Vatin, V.A.
Zinoviev, Keh-Chin Chang, Jiun-Jih Miau
Problems and methods of numerical and experimental
studies of wind flow in the surface layer in the coastal zone
"sea-land" and its impact on the urban area with high-rise
constructions in view of a discrete roughness terrain and its
discussed. Some environmental conditions associated with the transport
dispersion of contaminants are under consideration.
Read the article>>>
Read the article>>>
I.G. Kantardgi, V.S. Maderich
The research objective was the development of
forecasting method of the water quality in the harborage and the
the required water quality supply. The study was carried out for the
conditions of the
yacht port “Grand-Marina Sochi”, which is being
designed for placing in the
area of seaport Sochi.
N.I. Vatin, V.N. Chechevichkin, A.V.
Chechevichkin, Ye.S. Shilova
Possible applications of clinoptilolites (CP) in
natural water purification processes from various contaminants are
Sorption properties of CP in various deposits of Russia are studied in
to heavy metal ions. It is shown that sorption filters with CP allow
only post-treatment of waters from excessive aluminum and zinc, but
additional reduction of odor, color, and ammonium ion content.
The purpose of the work is to increase the efficiency
of decision-making at justification of types of work management for the
maintenance of building systems. The goal is reached by using the
analytical and probabilistic forecasting of trend of building system
and formation of an expression for average balance in function not only
indicators of a financial stream, but also from level of physical wear