Magazine of civil engineering, №1(19), 2011
Engineering services and networks of buildings


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Дополнительное образование по направлению Строительство

Журнал Гидротехника

Выставка Неразрушающий контроль и техническая диагностика в промышленности

Ксения Игоревна Стрелец

Hydraulics and engineering hydrology

In the end of 2010 on the Faculty of Civil Engineering of Saint-Petersburg State Polytechnical University the sessions of dissertation councils took place. Including, two PhD thesises has been defended in speciality "Hydraulics and Engineering Hydrology". This speciality is basic one for experts in engineering services and networks of buildings.
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68-я Научная конференция профессоров, преподавателей, научных работников, инженеров и аспирантов университета

Heating, Ventilation and Air Conditioning 

From 2th till 4th February at St.-Petersburg State University of Architecture and Civil Enginering (SPbGASU) the annual 68th Scientific conference of professors, teachers, science officers, engineers and post-graduate students of the  University took place. In the session "Heating, Ventilation and Air Conditioning" research workers and post-graduated students of SPbGASU post-graduated students and undergraduates of Saint-Petersburg State Polytechnical University (SPbSTU) participated.  
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N.I. Vatin, A.V. Ulybin, V.M. Ogorodnik 
GOST R 53778-2010: the engineering services survey and other pecularities of new normative document 

1st of January, 2011 in Russian Federation new normative document GOST R 53778-2010 regulating the activity in survey of buildings took effect. It is the first state standart (GOST) for survey in our country. Heretofore the basic documents were SP 13-102-2003 for all objects and RD 22-01-97 for objects in the field of industrial security.
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ECONOMICS
Технико-экономическая оптимизация температурной эффективности теплоутилизаторов с промежуточным теплоносителем

O.D. Samarin 
Technological optimization of temperature efficiency of heat recoverers with intermediate heat carrier

In the paper the padding investment costs and decrease of the consumption on a thermal energy are reviewed at salvaging a heat of exhausting air under the scheme with intermediate heat carrier in systems of mechanical ventilation. The nature of relation of the data of costs from a factor of temperature efficiency of heat recoverer is parsed. The expression for optimum temperature efficiency is offered by minimization of cumulative discounted costs during given computational term.
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Энергосберегающие технические решения для местно-центральных систем обеспечения микроклимата при использовании тепловых насосов в качестве местных агрегатов, объединенных в единый водяной контур

O.V. Averyanova
Energy-saving technical solutions for local and central microclimate systems using heat pumps as local aggregates united into one water circuit  

The paper considers using of a multizone central air-conditioning system with chilled beams for increase power efficiency of a building. In a transition period (spring, autumn) in a building there are both surplus of heat in one premises, and shortage of heat in others. At the expense of use low-temperature circuit and chilled beams of type "water-air" surpluses of heat are transferred in premises with shortages of heat and on the contrary.
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CALCULATIONS
Анализ эффективности систем кондиционирования с секцией осушения воздуха

E.M. Titova, O.V. Averyanova
Efficiency evaluating of air conditioning system with air dehumidification section

In this article on the example of indoor pool the most economically efficient variant of climatic parameters for high humidity areas has been selected. The calculation of operating, capital and reduced costs has been done. The reliability estimation and efficiency evaluating of the systems also have been done. 
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Математическое моделирование гидравлических режимов балансировки и управления подсистемой нагревания и охлаждения-осушения воздуха в СКВ и СВ

A.G. Sotnikov, A.P. Rusakov
Mathematical modelling of hydraulic conditions of balancing and control of heating, cooling and dehumidification subsystem in ventilation and air conditioning systems

It is known that heating is Achilles heel of HVAC systems by accident rate. The aim of this research is processes modelling and investigation of quantity parameters influence on heating and cooling subsystem of VAC systems when balancing that subsystem by various balanced valves and when controlling it by three-way valve. The result of the work are trim and adjustment characteristics of concerned subsystem in general view  under various work conditions and their further analysis.
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STRUCTURES
Особенности сорбционно-каталитической очистки воздуха в помещениях обитания человека в условиях крупных городов

N.I. Vatin, V.N. Chechevickin, A.V. Chechevickin
About sorption-catalytic air cleaning in premises for people habitation in megapolises

The basic sources of pollution of the air environment in megapolises, and also of internal atmosphere of premises for people habitation, in respect of their possible clearing by sorption-catalytic methods are systematized. Design and principle of action of  the room sorption-catalytic three-chambered filter for clearing of turnaround air of a thermo premise of gaseous ammonia, hydrogen sulfide, carbon dioxide and organic substances are described.
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Влияние физико-технических и геометрических характеристик штукатурных покрытий на влажностный режим однородных стен из газобетонных блоков

N.I. Vatin, A.S. Gorshkov, A.V. Glumov 
Influence of physicotechnical and geometrical characteristics of plastering covering on moisture conditions of AAC-blocks homogeneous walls

The diagrams of partial (maximum and actual) pressure distributions of water steam along the thickness of the tested homogeneous outside walls are provided. Calculations and diagrams were done for both the coldest month of the year and the coldest five-days period, i.e. under the worst climate conditions. The essential patterns of the influence of plastering covering charactristics (thickness, density, vapor permiability coefficient) on humidity accumulation processes in walls are determined.
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Энергоэффективность и экономическая целесообразность применения систем искусственного климата на базе вихревой трубы

A.S. Noskov, A.V. Lovtsov, A.V. Hait, A.P. Butimova, S.U. Pleshkov
Energy efficiency and economic reasonability of climatic systems based on vortex tube

Heat flow generation systems take one of the first positions in the list of the greatest energy consumption systems. This is heating and cooling of the rooms, freezing chambers etc. Climatic system of the refrigerating industrial complex is considered in article. Competitiveness of heating and cooling systems based on vortex tubes compared with chillers was shown.
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HYDRAULICS
Возможно ли восстановление напора в цилиндрическом закрученном потоке?

N.S. Kharkov, M.V. Chamkina, M.R. Petrichenko
Whether the recovery of a pressure in the cylindrical twirled flow is possible?

Research of losses of a pressure on length hydraulically smooth cylindrical pipe is presented at low intensity of curling of a flow of a viscous incompressible liquid. Lowering of coefficient of a hydraulic friction in comparison with a forward flow in the field of values of integral parameter of curling is revealed. The extreme properties of the screw movements specifying a possibility of realization of advantages slightly of the twirled stream are considered. Analytical estimations and results of an experimental research are presented.
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О лобовом сопротивлении движению цилиндра

A.D. Girgidov
About the frontal resistance to motion of the cylinder

According to conventional diagram of the flow past cylinder, dissipated power in the part of potential flow, formed by windward side of cylinder is calculated. Comparison of this power with the power, required to overcome the resistance to motion of the cylinder, shows that thin boundary layer in windward side of cylinder forms under Reynolds numbers exceeded 100.

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ANALYSIS
Рекуперация тепла в системах кондиционирования воздуха в теплый период года с использованием адиабатического охлаждения. Обзор возможностей

S.V. Chuduk
Heat recovery in air conditioning systems in frost-free season with using adiabatic cooling. Capacities overview

Aim of heat exchanger work in frost-free season is indirect cooling of incoming air before its input into maintainable premises. It is possible if exhaust air is cooled before its input into heat exchanger . In the article the operational principle of air conditioning system with using of adiabatic air cooling is considered. The data concerned system functioning depending on parameters of microclimate in maintainable premises are given.
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Системный подход к энергосбережению в инженерных сетях зданий

L.L. Goshka
System approach in energy saving in engineering services of buildings

Taking into consideration that there is not definite differentiation between definitions "economy of energy" and "energy saving", often the effect of energy effective technologies can be received only by reduction of air exchange, that is breach of sanitary and hygienic regulations. In the article the attempt to distinguish these definitions with using system approach is done.
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