Features of internal water supply and water disposal of shopping centers

Vestnik MGSU 1/2014
  • Orlov Evgeniy Vladimirovich - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Scienc- es, Associate Professor, Department of Water Supply, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 139-145

Pipeline from an external system should be inlet in the part of the building where a large number of water folding devices will be concentrated. As a rule, for shopping cen- ters with a lot of water consumers it is necessary to make not less than three inputs, each of them should be connected to different areas of an external ring water supply system in order to make the work of the system more reliable.The places for water folding fittings in shopping centers are the following. The water folding devices: mixers are placed in sanitary cabins of shopping centers. Usually, for for water saving in buildings with a big pass-through capacity per hour it is reasonable to use contactless mixers, which are turned on upon raising a hand with a help of motion sensor or light sensor. Another important argument in favor of such mixers is prevention of infections spread for the reason that the consumer doesn't touch the device, so, the risk of bacteria transmission via the device decreases. Such mixer supplies water with a demanded expense and temperature. As a rule, water for such mixers moves from the centralized internal water supply system of hot water, mixing up with cold water. If there is no centralized hot water supply system, it is possible to use hot water storage heaters in case of a small number of visitors or to reject mixers at all in favor of the cranes giving water of only one temperature (cold), which is also practiced.For the branch of economic and household the water receivers are used, which are present in sanitary cabins in most cases by toilet bowls, wash basins, urinals.

DOI: 10.22227/1997-0935.2014.1.139-145

References
  1. Shonina N.A. Vodosnabzhenie i vodootvedenie v usloviyakh kraynego severa [Water Supply and Water Disposal in the Far North]. Santekhnika [Sanitary Engineering]. 2012, no. 5, pp. 32—44.
  2. Brodach M.M. Zelenoe vodosnabzhenie i vodootvedenie [Green Water Supply and Water Disposal]. Santekhnika [Sanitary Engineering]. 2009, no. 4, pp. 6—10.
  3. Orlov E.V. Vodo- i resursosberezhenie. Zhilye zdaniya kottedzhnykh i dachnykh poselkov [Water and Rresource-saving. Residential Buildings of Cottage and Housing Estates]. Tekhnologii mira [Technologies of the World]. 2012, no. 10, pp. 35—41.
  4. Isaev V.N. Sotsial'no-ekonomicheskie aspekty vodosnabzheniya i vodootvedeniya [Social and Economic Aspects of Water supply and Water Disposal]. Santekhnika [Sanitary Engineering]. 2007, no. 1, pp. 8—17.
  5. Naumov A.L., Brodach M.M. Resursosberezhenie v sistemakh vodosnabzheniya i vodootvedeniya [Resource-saving in Water Supply and Water Disposal Systems]. Santekhnika [Sanitary Engineering]. 2012, no. 1, pp. 14—20.
  6. Isaev V.N., Chukhin V.A., Gerasimenko A.V. Resursosberezhenie v sisteme khozyaystvenno-pit'evogo vodoprovoda [Resource-saving in the System of Utility and Drinking Water Supply]. Santekhnika [Sanitary Engineering]. 2011, no, 3, pp. 14—17.
  7. Brodach M.M. Ot vodosberezheniya k zdaniyu s nulevym vodopotrebleniem [From Water Savings to a Building with Zero Water Consumption]. Santekhnika [Sanitary Engineering]. 2010, no. 6, pp. 32—37.
  8. Shonina N.A. Osobennosti proektirovaniya sistem vodosnabzheniya i kanalizatsii maloetazhnykh zdaniy [Design Features of Water supply and Sewerage Systems of Low-rise Buildings]. Santekhnika [Sanitary Engineering]. 2010, no. 3, pp. 56—58.
  9. Peter-Varbanets M., Zurbr?gg C., Swartz C., Pronk W. Decentralized Systems for Potable Water and the Potential of Membrane Technology. Water Research. 2009, vol. 43, no. 2, pp. 245—265.
  10. Tabunshchikov Yu.A., Naumov A.L., Miller Yu.V. Kriterii energoeffektivnosti v «zelenom» stroitel'stve [Criteria of Enerfy Efficiency in “Green” Engineering]. Energosberezhenie [Energy Saving]. 2012, no. 1, pp. 23—26.
  11. Pugachev E.A., Isaev V.N. Effektivnoe ispol'zovanie vody [Efficient Use of Water]. Moscow, ASV Publ., 2012, 432 p.

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SCIENTIFIC AND TECHNICAL PRECONDITIONS FOR EXTRUDED LIGHTWEIGHT CEMENT SYSTEMS

Vestnik MGSU 3/2012
  • Oreshkin Dmitriy Vladimirovich - Moscow State University of Civil Engineering (MGSU) Doctor of Technical Sciences, Chair, Department of Construction Materials; +7 (499) 183-32-29., Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Kaptsov Petr Vladimirovich - Moscow State University of Civil Engineering (MSUCE) postgraduate student, Department of Building Materials 8 (499) 183-32-29, Moscow State University of Civil Engineering (MSUCE), 26 Yaroslavskoe shosse, Moscow, 129337, Russia; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 115 - 119

The paper represents an overview of masonry mortars designated for walls made of small-size masonry units. The authors argue that regular mortars cannot demonstrate uniform heat transfer performance. Regular mortar walling has cold bridges. Cement-sand mortars have high cement and water consumption rates that boost mortar shrinkage and creep.
The paper also demonstrates that no surface effects or contact interaction between the cement grout and the surface of the sand and other aggregates are taken into consideration in connection with the above statement. Aggregates added to the mortar have a highly developed surface; they also feature a substantial supply of free energy. The authors believe that the extrusion method can make it possible to employ the free energy to improve the strength and other properties of the material in the course of formation of its structure.
This process may also improve the moistening and the adhesive strength of particles; it draws the cement particles as close to one another as it may be possible, it cleans their surface and extracts any excessive water out of the mix.
The paper also presents the results of the research of the microstructure of spilt Portland cement and hollow glass spheres, their mineral and chemical analyses, as well as the properties of masonry mortars. The paper presents a conclusion that their high process-dependent parameters and superior operating performance are attainable through the introduction of effective hollow glass spheres into masonry mortars and the application of the extrusion method. The aforementioned novelties may reduce the water consumption rate, improve the strength, freeze resistance and durability of cement mortars.
The preparation of this paper involved the study of nine reference books. This paper is the first one of a series of papers covering the method of extrusion of lightweight cement mortars.

DOI: 10.22227/1997-0935.2012.3.115 - 119

References
  1. Pashkevich A.A., Pervushin E.G., Oreshkin D.V. Polyesteklyannye mikrosfery i formirovanie tsementnykh sistem [Hollow Glass Microspheres and Formation of Cement Systems]. Collected works of Scientific and Technical Conference on Building Physics in the XXI Century. Moscow, NIISF, 2006, pp.134—139.
  2. Kirillov K.I., Pashkevich A.A., Pervushin E.G., Oreshkin D.V. Oblegchenny ykladochnyy rastvor [Lightweight mortar]. Collected works of Scientific and Technical Conference on Building Physics in the XXI Century. Moscow, NIISF, 2006, pp. 151—154.
  3. Oreshkin D.V., Pashkevich A.A., Pervushin E.G. Formirovanie struktur y tsementnykh sistem s polymisteklyannymi mikrosferami [Formation of the Structure of Cement Systems with Hollow Glass Microspheres]. Collected works of Scientific and Technical Conference in Ukhta, UGTU [Ukhta State Technical University], 2007, pp. 276—279.
  4. Kirillov K.I., Oreshkin D.V. Effektivnye kladochnye rastvory [Effective Mortars]. Collected works of Schientific and Technical Conference on Building Physics in the XXI Century. Moscow, NIISF, 2006, pp. 120—133.
  5. Oreshkin D.V., Belyaev K.V., Semenov V.S. Obshchaya skhema polucheniya oblegchennykh i sverkhlegkikh tsementnykh rastvorov [General Overview of Production of Lihtweight and Ultralight Cement Mortars], Stroitel’stvo neftyanykh i gazovykh skvazhin na sushe i na more [Construction of Onshore and Offshore Oil and Gas Wells], 2010, no. 11, pp. 32—33.
  6. Sakharov G.P. Nauchno-tekhnicheskie predposylki polucheniya ekstrudirovannogo melko-zernistogo betona [Scientific and Technical Prerequisites for Obtaining Extruded Fine-grained Concrete]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering], 2011, no. 4, pp. 483—485.
  7. Bazhenov Yu.M., Magdeev Yu.H., Alimov L.A., Voronin V.V., Goldenberg L.B. Melkozernistye betony [Fine-grained Concretes]. Moscow, ASV, 1998, 148 p.
  8. Bazhenov Yu.M. Tekhnologiya betona [Technology of Concrete]. Moscow, ASV, 2011, 528 p.
  9. Sakharov G.P., Tran Minh Dyk. Povyshenie svoystv melkozernistogo betona ekstrudirovaniem iskhodnykh smesey [Improving the Properties of Fine-grained Concrete by Extrusion of Original Mixtures]. Beton i zhelezobeton [Concrete and Reinforced Concrete], 2009, no. 1, pp. 6—8.
  10. Sakharov G.P. Ekstrudirovannyy melkozernistyy beton s povyshennymi kachestvennymi pokazatelyami [Better Quality Extruded Fine-grained Concrete]. Beton i zhelezobeton [Concrete and Reinforced Concrete], 2010, no. 4, pp. 2—7.

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Leaks in the internal water supply piping systems

Vestnik MGSU 3/2015
  • Orlov Evgeniy Vladimirovich - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Scienc- es, Associate Professor, Department of Water Supply, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Komarov Anatoliy Sergeevich - LLC “GLAKOMRU” Candidate of Technical Sciences, Director General, LLC “GLAKOMRU”, B. Koptevskiy proezd, Moscow, 8105039, Russian Federation; +7 (499) 183-54-56; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Mel’nikov Fedor Alekseevich - Moscow State University of Civil Engineering (MGSU) student, Institute of Engineering and Ecological Construction and Mechanization, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; +7 (499)183-36-29; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Serov Aleksandr Evgen’evich - Moscow State University of Civil Engineering (MGSU) student, Institute of Engineering and Ecological Construction and Mechanization, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; +7 (499)183-36-29; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 40-47

Great water losses in the internal plumbing of a building lead to the waste of money for a fence, purification and supply of water volumes in excess. This does not support the concept of water conservation and resource saving lying today in the basis of any building’s construction having plumbing. Leakage means unplanned of water losses systems in domestic water supply systems (hot or cold) as a result of impaired integrity, complicating the operation of a system and leading to high costs of repair and equipment restoration. A large number of leaks occur in old buildings, where the regulatory service life of pipelines has come to an end, and the scheduled repair for some reason has not been conducted. Steel pipelines are used in the systems without any protection from corrosion and they get out of order. Leakages in new houses are also not uncommon. They usually occur as a result of low-quality adjustment of the system by workers. It also important to note the absence of certain skills of plumbers, who don’t conduct the inspections of in-house systems in time. Sometimes also the residents themselves forget to keep their pipeline systems and water fittings in their apartment in good condition. Plumbers are not systematically invited for preventive examinations to detect possible leaks in the domestic plumbing. The amount of unproductive losses increases while simultaneous use of valve tenants, and at the increase of the number of residents in the building. Water leaks in the system depend on the amount of water system piping damages, and damages of other elements, for example, water valves, connections, etc. The pressure in the leak area also plays an important role.

DOI: 10.22227/1997-0935.2015.3.40-47

References
  1. Isaev V.N., Chukhin V.A., Gerasimenko A.V. Resursosberezhenie v sisteme khozyaystvenno-pit’evogo vodoprovoda [Resource-saving in Household and Drinking Water Supply System]. Santekhnika [Sanitary Equipment]. 2011, no. 3, pp. 14—17. (In Russian)
  2. Chukhin V.A., Bastrykin R.I., Andrianov A.P. Izuchenie korrozionnykh otlozheniy v truboprovodakh sistem podachi i raspredeleniya pit’evoy vody [Study of Corrosion Deposits in the Piping of Drinking Water Supply and Distribution Systems]. Vodosnabzhenie i sanitarnaya tekhnika [Water Supply and Sanitary Technique]. 2013, no. 7, pp. 30—36. (In Russian)
  3. Orlov V.A. Puti obespecheniya sanitarnoy nadezhnosti vodoprovodnykh setey [Ways to Ensure the Sanitary Safety of Water Supply Networks]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2009, no. 1, pp. 181—187. (In Russian)
  4. Mikhaylin A.V., Chukhin V.A. Tekhnologiya obessolivaniya vody metodom reversivnogo elektrodializa s bipolyarnymi membranami [Technology of Desalting Water by the Method of Reverse Electrodialysis with Bipolar Membranes]. Promyshlennoe i grazhdanskoe stroitel’stvo [Industrial and Civil Engineering]. 2012, no. 9, pp. 49—51. (In Russian)
  5. Guzzon A., Bohn A., Diociaiuti M., Albertano P. Cultured Phototrophic Biofilms for Phosphorus Removal in Wastewater Treatment. Water Research. 2008, vol. 42, no. 16, pp. 4357—4367. DOI: http://dx.doi.org/10.1016/j.watres.2008.07.029.
  6. Sriwiriyarat T., Randall C.W. Performance of IFAS Wastewater Treatment Processes for Biological Phosphorus Removal. Water Research. 2005, vol. 39, no. 16, pp. 3873—3884. DOI: http://dx.doi.org/10.1016/j.watres.2005.07.025.
  7. Pugachev E.A. Sotsial’nye aspekty vodopol’zovaniya. Analiz otnosheniya cheloveka k prirodnomu resursu — vode [Social Aspects of Water Use. Analysis of the Relation of a Human to a Natural Resource — Water]. Tekhnologii mira [Technologies of the World]. 2011, no. 4, pp. 39—47. (In Russian)
  8. Mikhaylin A.V., Chukhin V.A. Besstochnaya tekhnologiya obessolivaniya vody [Drainless Technology of Water Desalting]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2009, no. 2, pp. 151—153. (In Russian)
  9. Orlov E.V. Sistema vnutrennego vodoprovoda. Novyy tip vodorazbornykh priborov v zdaniyakh. Avtomaty pit’evoy vody [Internal Water Supply System. New Type of Water Folding Devices in Buildings. Drinking Water Machines]. Tekhnika i tekhnologii mira [Equipment and Technologies of the World]. 2013, no. 1, pp. 37—41. (In Russian)
  10. De-Bashan L.E., Hernandez J.P., Morey T., Bashan Y. Microalgae Growth-Promoting Bacteria as «Helpers» for Microalgae: a Novel Approach for Removing Ammonium and Phosphorus from Municipal Wastewater. Water Research. 2004, vol. 38, no. 2, pp. 466—474. DOI: http://dx.doi.org/10.1007/978-1-4020-5765-6_28.
  11. Scolan Y., Korobkin A. Mixed Boundary Value Problem in Potential Theory: Application to the Hydrodynamic Impact (Wagner) Problem. Comptes Rendus Mecanique. 2012, vol. 340, no. 10, pp. 702—705. DOI: http://dx.doi.org/10.1016/j.crme.2012.09.006.
  12. Pugachev E.A., Porokhnya A.E. Effektivnoe ispol’zovanie vody. Proizvodstvennye promyvochnye protsessy na fabrikakh [Efficient Use of Water. Industrial Washing Processes at Factories]. Tekhnika i tekhnologii mira [Equipment and Technologies of the World]. 2014, no. 7, pp. 37—41. (In Russian)
  13. Khurgin R.E., Orlov V.A., Zotkin S.P., Maleeva A.V. Metodika i avtomatizirovannaya programma opredeleniya koeffitsienta Shezi «S» i otnositel’noy sherokhovatosti «n» dlya beznapornykh truboprovodov [Methodology and Automated Program for Determining the Coefficient of Chezy “C” and Relative Roughness “N” For Non-Pressure Pipelines]. Nauchnoe obozrenie [Scientific Review]. 2011, no. 4, pp. 54—60. (In Russian)
  14. Iafrati A., Korobkin A. Asymptotic Estimates of Hydrodynamic Loads in the Early Stage of Water Entry of a Circular Disk. Journal of Engineering Mathematics. 2011, vol. 69, no. 2—3, pp. 199—224.
  15. Zwierzchowska A. Optymalizacja doboru metod bezwykopowej budowy. Politechnika swietokrzyska. 2003, pp. 16—19.
  16. Orlov E.V. Vodo- i resursosberezhenie. Zhilye zdaniya kottedzhnykh i dachnykh poselkov poselkov [Water- and Resource-Saving. Residential Buildings of Cottage and Housing Estates]. Tekhnologii mira [Technologies of the World]. 2012, no. 10, pp. 35—41. (In Russian)
  17. Orlov V.A. Gidravlicheskie issledovaniya i raschet napornykh truboprovodov, vypolnennykh iz razlichnykh materialov [Hydraulic Studies and Calculation of Pressure Pipes Made of Different Materials]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2009, no. 1, pp. 177—180. (In Russian)
  18. Isaev V.N., Davydova A.A. Pit’evoe i khozyaystvennoe vodosnabzhenie [Drinking and Household Water Supply]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2009, no. 2, pp. 148—150. (In Russian)
  19. Otstavnov A.A., Khar’kin V.A., Orlov V.A. K tekhniko-ekonomicheskomu obosnovaniyu bestransheynogo vosstanovleniya vetkhikh samotechnykh truboprovodov iz traditsionnykh trub polimernymi [To Feasibility Study of Trenchless Repair of the Old Gravity Pipelines Made of Traditional Pipes With Polymer Ones]. Santekhnika, otoplenie, konditsionirovanie [Plumbing. Heating. Conditioning. Energy Efficiency]. 2004, no. 4, pp. 30—34. (In Russian)
  20. Otstavnov A.A., Orlov E.V., Khantaev I.S. Opredelenie prioritetnykh uchastkov remonta sistem vodosnabzheniya i vodootvedeniya [Definition Of Priority Areas For Water Supply And Sanitation Systems Repair]. Vodosnabzhenie i sanitarnaya tekhnika [Water Supply and Sanitary Technique]. 2007, no. 3, pp. 25—30. (In Russian)
  21. Orlov V.A. Bionika i bestransheynaya renovatsiya truboprovodnykh setey [Bionics and Trenchless Renovation of Pipeline Systems]. Nauchnoe obozrenie [Scientific Review]. 2013, no. 3, pp. 147—151. (In Russian)
  22. Otstavnov A.A., Primin O.G., Khrenov K.E., Orlov V.A., Khar’kin V.A. O gidroudarakh v podzemnykh truboprovodakh iz polietilenovykh trub [On Hydraulic Impacts in Underground Pipelines Made of Polyethylene Pipes]. Santekhnika, otoplenie, konditsionirovanie [Plumbing. Heating. Conditioning. Energy Efficiency]. 2012, no. 3 (123), pp. 12—17. (In Russian)
  23. Ishmuratov R.R., Stepanov V.D., Orlov V.A. Opyt primeneniya bestransheynoy spiral’no-navivochnoy tekhnologii vosstanovleniya truboprovodov na ob’’ektakh Moskvy [The Experience of Using Trenchless Spiral Winding Technology o Piping Recovery on the Objects In Moscow]. Vodosnabzhenie i sanitarnaya tekhnika [Water Supply and Sanitary Technique]. 2013, no. 6, pp. 27—32. (In Russian)
  24. Kaczor G., Bergel T. The Effect of Incidental Waters on Pollution Load in Inflows to the Sewage Treatment Plants and to the Receivers of Sewage. Przemysł Chemiczny. 2008, vol. 87, pp. 476—478.
  25. Kaczor G., Bugajski P. Impact of Snowmelt Inflow on Temperature of Sewage Discharged to Treatment Plants. Pol. J. Environ. Stud. 2012, vol. 21, no. 2, pp. 381—386.

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Analysis of cad software designated for analysis of water supply systemsfor the purpose of hydraulic modeling designated for renovation of pipelines

Vestnik MGSU 3/2013
  • Orlov Vladimir Aleksandrovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, Professor, Head of the Department of Water Supply and Waste Water Treatment, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Averkeev Il’ya Alekseevich - Moscow State University of Civil Engineering (MGSU) postgraduate student, Department of Water Supply; +7 (499) 183-36-29, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 237-243

Operation of present-day water supply networks and management of hydraulic models of pipeline networks are labour intensive and ambiguous tasks requiring a sophisticated approach. Operation of water supply networks servicing major Russian cities is accompanied by processing of extensive amounts of information; moreover, some elements of the water supply infrastructure are hidden under the ground. Nowadays operators of water supply networks take advantage of the advanced software used to solve a wide range of tasks associated with data filing, overall evaluation, analysis and optimization of the most important parameters of urban water supply networks. The above software is an essential tool in the management of water networks in major cities. Their ability to collect and process all data on water supply networks and to conduct some research aimed at the improvement of various parameters of the system, including optimization of hydraulic characteristics of the pipeline is employed by researchers and water pipeline operators.The authors analyze and compare CAD software systems designated for water supply networks servicing big cities, capable of resolving multi-component problems and ensuring the reliability of water supply systems.

DOI: 10.22227/1997-0935.2013.3.237-243

References
  1. Abramov N.N. Vodosnabzhenie [Water Supply]. Moscow, Stroyizdat Publ., 1982, 382 p.
  2. Somov M.A., Zhurba M.G. Vodosnabzhenie. T. 1. Sistemy zabora, podachi i raspredeleniya vody [Water Supply. Vol. 1. Systems of Water Intake, Delivery and Distribution]. Moscow, ASV Publ., 2008, 262 p.
  3. Gal’perin E.M. Opredelenie nadezhnosti funktsionirovaniya kol’tsevoy vodoprovodnoy seti [Identification of Reliability of Operation of the Water Supply Ring]. Vodosnabzhenie i sanitarnaya tekhnika [Water Supply and Sanitary Engineering]. 1999, no. 6, pp. 13—16.
  4. Produkty dlya analiza i proektirovaniya infrastruktury vodosnabzheniya i kanalizatsii [Software Products for Analysis and Design of the Water Supply and Sewage Infrastructure]. Available at: www.bentley.com. Date of access: 05.12.12.
  5. MIKE URBAN — Programma gidravlicheskogo rascheta sistem vodosnabzheniya [MIKE URBAN – Hydraulic Design Software for Water Supply Networks]. NKF «Volga». Available at: www.volgaltd.ru. Date of access: 05.12.12.
  6. ZuluHydro — gidravlicheskie raschety vodoprovodnykh setey. Kompaniya «Poli-term» [ZuluHydro – Hydraulic Design of Water Supply Networks. Poli-term Company]. Available at: www.politerm.com. Date of access: 05.12.12.
  7. Govindan Sh., Val’ski T., Kuk D. Resheniya Bentley Systems: gidravlicheskie modeli. Pomogaya prinimat’ luchshie resheniya [Bentley Systems Solutions: Hydraulic Models. Helping Make the Best Decisions]. SAPR i grafika [CAD and Graphics]. 2009, no. 4, pp. 36—38.
  8. Borisov D.A. Bentley Systems — modelirovanie i ekspluatatsiya naruzhnykh setey vodosnabzheniya i kanalizatsii [Bentley Systems – Modeling and Operation of Exterior Water Supply and Sewage Networks]. SAPR i grafika [CAD and Graphics]. 2009, no. 5, pp. 64—68.
  9. Produkty serii MIKE kompanii DHI Water & Environment [MIKE Series Software Developed by DHI Water & Environment]. Available at: www.mikebydhi.com. Date of access: 05.12.12.
  10. Khramenkov S.V. Strategiya modernizatsii vodoprovodnoy seti [Water Supply Pipeline Upgrade Strategy]. Moscow, Stroyizdat Publ., 2005, 398 p.

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INFORMATION SUPPLY FOR SOLAR THERMAL SYSTEMS MATHEMATICAL MODELING

Vestnik MGSU 6/2017 Volume 12
  • Kitaytseva Elena Khalilovna - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Associate Professor, Information Systems, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Konstantinova Daria Arkadyevna - Moscow State University of Civil Engineering (National Research University) (MGSU) postgraduate student, Information Systems, Technologies and Automation in Construction Department, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.

Pages 687-691

Solar thermal system are its constituent elements with their connection between each other, thermal processes within them and also input/output data. The conjunction of external and internal factors determines the efficiency of solar thermal system. No excess heat as well as its deficiency displays us high level efficiency of system. The initial data for modeling of solar thermal systems functioning are dissimilar. Parameters of system’s equipment are constant. Solar radiation amount and water consumption are variable data. The more close initial data to reality, the more definite simulated result is. The main problem is in unpredictability of water consumption by the reason of daily regime and requirement of each user. In this way user is the most instable element of the system. In this study the input data for mathematical modeling of solar thermal systems was analyzed. The climatic databases and standard specifications of hot water demand were also analyzed. The operability estimation method for solar thermal systems with variable input data was offered. The extent of suitability of any solar thermal system can be defined by certain characteristic. The value of this characteristic displays energy accumulation process.

DOI: 10.22227/1997-0935.2017.6.687-691

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