Moscow Architectural Institute State Academy

Moscow, Russia

Moscow Architectural Institute State Academy

Moscow, Russia

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Kapko D.V.,LTD NPO THERMEC | Shkarpet V.E.,LTD Arktos | Kochariantc K.V.,LTD Arktos | Tabunshchikov I.A.,Moscow Architectural Institute State Academy | Brodach M.M.,Moscow Architectural Institute State Academy
International Journal of Applied Engineering Research | Year: 2016

The paper presents experimental results for a ventilation system with local recirculation diffusers designed by the authors for buildings with high heat emissions (> 25 W/m2), such as office buildings. A 6,000 m3 office building in Moscow has been demonstrated to have indoor excess heat occurring at the outdoor air temperature over -9 °C. A principal diagram of a ventilation system with the designed local recirculation diffusers (LRD) is given. Tests were carried out on aerodynamic and acoustic benches and on a bench demonstrating the use of the designed system in an office. The tests have confirmed that comfort air temperature and acoustic parameters can be ensured in a room serviced with a ventilation system with local recirculation diffusers when the outdoor air temperature supplied to the LRD is +6 °C and above. It has been confirmed that a local recirculation diffuser can automatically maintain comfort air temperature parameters (air temperature range of 19 to 21 °C, air flow velocity of 0.2 m/s max.) according to the outdoor air temperature (outdoor temperature range of 6 to 18 °C) and the room heat load (recirculation air temperature range of 18 to 25 °C), with the sound pressure level generated by the diffuser being less than 40 dB(A) for a distance of 2-2.5 m. © Research India Publications.


Vasilyev G.P.,OAO INSOLAR INVEST | Lichman V.A.,OAO INSOLAR INVEST | Peskov N.V.,Moscow State University | Brodach M.M.,Moscow Architectural Institute State Academy | And 2 more authors.
Energy and Buildings | Year: 2015

We present a 1D numerical model of heat, steam, and water diffusion across a wall, consisting of several layers of different material. The model is a system of coupled diffusion equations for material temperature, vapour pressure, and water concentration in material pores, accounting for vapour condensation and water evaporation. The system of nonlinear partial differential equations (PDEs) is solved numerically using the finite difference method. The primary objective of modelling is the simulation of the long-term behaviour of the building wall moisture distribution under the influence of seasonal variations in atmospheric air temperature and humidity. © 2014 Elsevier B.V. All rights reserved.


Kapko D.V.,LTD NPO THERMEC | Shkarpet V.E.,LTD Arktos | Balandina L.Y.,LTD Arktos | Kochariantc K.V.,LTD Arktos | Esaulov G.V.,Moscow Architectural Institute State Academy
International Journal of Applied Engineering Research | Year: 2016

A new scheme of ventilation system with local recirculation diffusers (LRD) was proposed. A local recirculation diffuser was designed. Requirement specifications for LRD capacity were developed. Proposals on the parameters of LRD were developed. The topic of improving the quality of internal air while keeping power consumption of the ventilation and air conditioning systems as low as possible has been getting increased attention in the past years[7], [5], [4], [3], [6], [2]. To date, the standard heat insulation level of the building envelope has grown significantly[9]. At the same time, significant amounts of heat are generated in certain types of public buildings, such as office premises, retail buildings, sports, and catering facilities, in course of their operation. Using traditional heating and ventilation solutions in the cold and transition seasons results in overconsumption of energy resources because the outdoor air is heated in the input unit up to a specified temperature (which usually equals the temperature of the air in the room) while the air conditioning system consumes cold to assimilate the heat generated internally. The aim of this research is to design a ventilation system with local recirculation diffusers that is capable of assimilating excessive internal heat by underheating the intake air. The article presents the ventilation system with local recirculation diffusers (“LRD”), the LRD design, requirements to LRD capacity, and proposals on the sets of LRD parameters. © Research India Publications.


Vasilyev G.P.,JSC NIIMosstroy | Leskov V.A.,JSC NIIMosstroy | Mitrofanova N.V.,JSC NIIMosstroy | Gornov V.F.,JSC NIIMosstroy | And 3 more authors.
MATEC Web of Conferences | Year: 2016

This article is dedicated to the study of the processes of formation and freezing of condensate in heat exchangers using ambientair heat and is prepared according to the results of experimental investigations. The aim of this work has been set to elaboratean energy-independent technical solution for protection of heat-exchange equipment against freezing the moisture condensed on the heat-exchange surfaces while using the low-potential heat of ambient air in heat pump systems. The investigations have shown that at the temperatures of ambient air close to 0°C when using the «traditional» way of defrostation, which means the reverse mode of operation of heat pump, an intensive formation of ice is observed at the bottom part of evaporator (if not provided with tray heater). This effect is provoked by downward flow of thawed waterand it'sfreezing in the lower part of the heat-exchanger due to the fact that the tray and housing of heat pump have a temperature below zero. Thereafter, while the defrostation mode has been periodically used, the ice coat would begoing to continue its growth,and by time significant area of evaporator could appear to be covered with ice.The results of the investigations presented in the article could be applied both to air-source heat pumps and to ventilation air heat recuperators. © Owned by the authors, published by EDP Sciences, 2016.


ShChepetkov N.I.,Moscow Architectural Institute State Academy
Light and Engineering | Year: 2010

In order to thrive, any art form should constantly search for new ways and means of expression. Light design has remarkable prospects and inexhaustible potential. Soon, instead of refl ected light dominating today's utilitarian and artistic illumination, radiated light will shine. Making these and other observations on the medium of city light, the author is convinced that the "sleeping" science owes a lot to the dynamic practice of light-design, and that light designers should correctly formulate its problems and, as far as is possible participate in their solution.


Vasilyev G.P.,JSC NIIMosstroy | Tabunshchikov I.A.,Moscow Architectural Institute State Academy | Brodach M.M.,Moscow Architectural Institute State Academy | Leskov V.A.,JSC NIIMosstroy | And 4 more authors.
Energy and Buildings | Year: 2016

This article, written as a result of theoretical and practical research, describes a survey of condensate nucleation in heat exchangers utilizing low-potential heat of humid air. The authors conducted a series of studies aimed at developing energy-independent technical solutions to protect heat exchangers from the freezing of the moisture condensing on their exchange surfaces in the course of humid air heat recovery. There was a negative dependence of the thickness of the layer of condensate formed on the heat exchange surface, the condensation rate, and the moisture content of warm air. The article presents the outcomes of the numerical study aimed at building a model of the condensation processes that occur due to a flow of moist air when the air is cooled and heat is utilized. The study provided experimental validation for the consistency of the processes related to water vapor condensation in the flow of cooled moist air. The outcomes presented in the article can apply to both the exchange systems using the low potential heat of the atmospheric air, e.g.; for room heating or snow melting, and to the exhaust air energy recovery systems of the building ventilation plant. © 2015 Elsevier B.V. All rights reserved.


Naumov A.L.,LTD NPO THERMEC | Kapko D.V.,LTD NPO THERMEC | Brodach M.M.,Moscow Architectural Institute State Academy
Energy and Buildings | Year: 2014

Improving indoor air quality while simultaneously minimizing the consumption of ventilation and air conditioning systems has received increased attention in recent years (Joo et al. (2012) [1], Le Dreau et al. (2013) [2], Rackes and Waring (2014) [3], Han et al. (2014) [4], Van den Bulck et al. (2013) [5], Ngoc Quang et al. (2013) [6], Naumov and Kapko (2013) [7], Naumov et al. (2013) [8]). The standard thermal protection level of outdoor enclosure structures has increased significantly (Rulebook of the Russian Federation 50.13330.2012 Thermal protection of buildings [9]). In addition, office buildings are characterized by considerable heat emissions during their operation. Using traditional solutions for heating and ventilation in the heating period results in wasted energy: outdoor air is heated to the desired temperature in the air heater of the supply ventilator unit (usually equal to the temperature of the room air); also, the air conditioning system consumes energy to produce cold air to address the internal heat emissions. The heat consumption in ventilation systems can be reduced by recirculation. This article presents a discussion of the advantages and disadvantages of different ventilation systems, including the ventilation scheme with local recirculation diffusers developed by the authors for rooms with considerable heat emissions. Based on the analysis of the life cycle cost, the article presents an assessment of the marginal cost of one local recirculation diffuser for these systems. © 2014 Elsevier B.V. All rights reserved.


Shchepetkov N.I.,Moscow Architectural Institute State Academy
Light and Engineering | Year: 2011

This article presents a brief historical review of street lighting in Berlin. It focuses on more than one hundred years of evolution of architectural lighting of building facades in the city. In recent decades, Berlin was has been active construction and reconstruction of architectural lighting, which led to the formation of a completely new light and colour medium and lighting image of the city. In the historical city centre large ensembles of light were created, which are spontaneously combined into a single urban lighting system. Examples of the most successful lighting solutions are discussed.


Naumov A.L.,Central Scientific Research Institute for Industrial Buildings and Structures TSNIIPROMZDANII | Tabunshchikov I.A.,Moscow Architectural Institute State Academy | Kapko D.V.,Central Scientific Research Institute for Industrial Buildings and Structures TSNIIPROMZDANII | Brodach M.M.,Moscow Architectural Institute State Academy
Energy and Buildings | Year: 2015

The main method of raising the energy efficiency of ventilation systems is the use of demand-controlled ventilation systems (DCV) that adjust fresh air inflow depending on how much is needed. A variety of DCV systems in office buildings is personal ventilation (PV) systems that supply air into a person's breathing area, thus ensuring optimal air quality in the breathing area. Optimal air temperature values are maintained in the whole volume of the room using, e.g., fan coils. It is practical to keep the temperature optimal only in the area where the person is located, while in the rest of the room acceptable temperatures will suffice. This article features the findings of a study into microclimate formation by a local demand-controlled ventilation system (LDCV). The novelty of this development is the use of personal ventilation with an additional ventilation system for cooling air to the optimal temperature around the person's body only. Computer simulation carried out using ANSYS software and a series of experiments on a laboratory LDCV prototype confirmed that it ensures optimal air temperature and motion near human body. The system's air-saving capability reaches 50-60% as compared to mixing ventilation and 15-20% as compared to personal ventilation. © 2015 Elsevier B.V. All rights reserved.


Naumov A.L.,Central Scientific Research Institute for Industrial Buildings and Structures | Tabunshchikov I.A.,Moscow Architectural Institute State Academy | Kapko D.V.,Central Scientific Research Institute for Industrial Buildings and Structures | Brodach M.M.,Moscow Architectural Institute State Academy
Energy and Buildings | Year: 2015

One of the methods to protect a building with a high indoor moisture content and structural glazing from vapour condensation is to use energy-efficient windows [1,2], but often, it is not sufficient. Another method is to blow air with a relatively low water content over a glazing. Such systems are designed to cope with critical conditions, i.e., the lowest temperature of the external air and the highest water content in the indoor air; therefore, they are extremely energy-consuming. The authors propose to use demand-controlled ventilation systems [3-6] that can adjust air consumption according to the actual temperature and indoor air humidity. The efficiency of air jet protection depends on the air stream range, conditions of heat exchange on the surface, and changes in the moisture content in the boundary layer of the air stream. The article [7] describes the method for the determination of the dew point temperature on the glazing surface that accounts for the characteristics of the air stream flowing out of the slotted outlet. This article analyses a refined statement of the problem that accounts for the change in the heat-exchange conditions in the initial and main parts of the air stream. © 2014 Elsevier B.V. All rights reserved.

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