75504 2712-8172 Magazine of Civil Engineering 6 58 2015 1-55
CHR RUS 4-7 Peter the Great Saint Petersburg Polytechnic University Yakubson Vera engstroy@inbox.ru
Polytechnicheskay, 29
 Arkhipova E. The conference “Inspection of buildings and structures: problems and solutions” The article briefly covers the main reports given on the conference “Inspection of buildings and structures: problems and solutions” that took place in Saint-Petersburg on October, 15th–16th. The conference covered the big range of subjects: the experience in inspection of various structures, from large-span sports structures to historical buildings; the non-destructive and direct methods for evaluation of the mechanical properties of various construction materials and so on. 10.5862/MCE.58.1 conference inspection of buildings structure testing non-destructive methods large-span structures survey of historic buildings https://engstroy.spbstu.ru/article/2015.58.1/ 01.pdf
RAR RUS 8-18 6701823730 0000-0003-0564-3307 Peoples' Friendship University of Russia Svintsov Alexandr svintsovap@rambler.ru Kharun Makhmud miharun@mail.ru Peoples' Friendship University of Russia Mukarzel Serge sergelb@inbox.ru Valve head for water fittings with high regulatory capacity Water fittings are a necessary element of equipment for building plumbing systems. One of the main technical characteristics of water fittings is their regulatory capacity. Currently, valve heads with flat ceramic locking elements are widely used in plumbing systems. Ceramic locking elements work with a high abrasion resistant and without water leaks. Regulatory capacity of flat locking elements depends on orifice shape. Valve heads that are equipped with flat-locking elements with semicircle or sector-shaped orifices have a low regulatory capacity. When the tap is opened or closed, the water flow changes abruptly with a slight turn of the handle. The water consumer is forced to spend more time in controlling the water flow with a desired temperature without using the water. As a result, clean tap water flows into the sewage system without actually being used, which is unproductive expenditure. The application of a flat locking pair with a smoothly changing shape is advisable to improve the regulatory capacity of water fittings. This form of orifice allows to change the water flow in proportion to the rotation of valve head handle. The proposed method of calculation allows to determine the orifice area to design the valve and its geometric parameters. The use of water fittings with a locking pair that is calculated by the proposed method can reduce the water loss by 12…15 % compared to other types of valve heads. 10.5862/MCE.58.2 water fittings water tap valve head locking pair water flow regulatory capacity water loss https://engstroy.spbstu.ru/article/2015.58.2/ 02.pdf
RAR RUS 19-31 Tyumen State University of Architecture and Civil Engineering Litvinova Natalya litvinova2010-litvinova2010@yandex.ru The air supply hole of the inlet chamber and preventing the inflow of harmful impurities into the ventilation system The article discusses the dependences of carbon monoxide (II) concentrations on the height of the building façade based on the results of in situ tests with the goal of preventing the inflow of pollutants into the ventilation system. Carbon oxide (II) may enter the premises when the inlet ventilation system is working through the inlet chamber from external sources of emission. i.e. vehicles and low and medium-power boilers in the urban environment. We have constructed nomograms to adjust the height of the receiving hole for air intake by the ventilation system depending on the quality of the outdoor air on the height of buildings from external sources of different heights in relation to the building. We have suggested guidelines allowing to design ventilation systems depending on the quality of outdoor air over the entire height of the building, which cannot be done at the design stage. 10.5862/MCE.58.3 place for air intake air intake hole of the inlet chamber inlet ventilation system outdoor air quality concentration of carbon oxide (II) boiler houses pollution motor vehicles pollution https://engstroy.spbstu.ru/article/2015.58.3/ 03.pdf
RAR RUS 25-37 Institute of Engineering Thermophysics of the National Academy of Sciences of Ukraine Basok Borys basok@ittf.kiev.ua Institute of Engineering Thermophysics of the National Academy of Sciences of Ukraine Bozhko Igor bozhkoik@gmail.com Institute of Engineering Thermophysics of the National Academy of Sciences of Ukraine Nedbaylo Alexander nan_sashulya@ukr.net Institute of Engineering Thermophysics of the National Academy of Sciences of Ukraine Lysenko Oksana lisenko_oks@ukr.net A polyvalent heating system for a passive house based on renewable energy sources The article describes the concept of creating a polyvalent heating system for a passive house situated on the premises of the Institute of Technical Thermal Physics of the National Academy of Sciences of Ukraine. A brief analysis of common heating systems used in the residential sector, and public and industrial buildings is conducted. The authors describe the main stages of developing the principal hydraulic circuit of a polyvalent heating system for a passive house from renewable energy sources. The basic modes of operation depending on the period of year, the ambient temperature and technological features are listed. The advisability of using the heat pump technology in supplying heat to energy-efficient and passive houses is demonstrated. 10.5862/MCE.58.4 polyvalent system heating heat pumps floor heating capillary heated floor ground heat exchangers passive house renewable energy https://engstroy.spbstu.ru/article/2015.58.4/ 04.pdf
RAR RUS 44-55 Peter the Great Saint Petersburg Polytechnic University Chusov Alexander chusov17@mail.ru
Polytechnicheskay, 29
 6507413522 Peter the Great St. Petersburg Polytechnic University Maslikov Vladimir vmaslikov@list.ru
29 Politechnicheskaya St., St. Petersburg, 195251, Russia
 56237664900 Peter the Great St. Petersburg Polytechnic University Molodtsov Dmitry molodtsov_dv@spbstu.ru
29 Politechnicheskaya St., St. Petersburg, 195251, Russia
 Peter the Great Saint Petersburg Polytechnic University Zhazhkov Viacheslav zhazhkov@gmail.com
Polytechnicheskay, 29
 Peter the Great Saint Petersburg Polytechnic University Riabuokhin Oleg pulya_007@hotmail.com
Polytechnicheskay, 29
 Assessment of zonal distribution of methane on MSW landfills in northern regions for its usage in local power engineering Municipal solid waste (MSW) landfills located in regions of Russia with low temperatures and relatively low rainfall averages are considered unpromising in terms of their biogas potential; however, these claims have not been substantiated. Assessment of the biogas potential of such landfills requires special field research for analyzing biogas composition and emission speed, which could define the processes taking place inside a landfill. We should note that the use of mathematical models that do not take into account the specifics of a particular landfill makes it impossible to get detailed and reliable information about its biogas potential. This work contains the results of research conducted for assessing the biogas potential of three municipal solid waste landfills located in various zones of the Northwestern Federal District with Atlantic continental and moderately continental climate. The research showed that biochemical processes of waste decomposition accompanied by the emission of biogas with high (50 vol% and above) methane content are possible even in areas with a relatively cold climate. This confirms the presence of the energy potential of these landfills, which can be used for the needs of heat, electricity and gas supply to the population, etc. 10.5862/MCE.58.5 biogas MSW landfill heat supply gas supply electricity supply waste methane energy potential cold climate https://engstroy.spbstu.ru/article/2015.58.5/ 05.pdf