Karshi Engineering Economics Institute

Qarshi, Uzbekistan

Karshi Engineering Economics Institute

Qarshi, Uzbekistan

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Avezov R.R.,LLC Solar Plus | Avezova N.R.,Academy of Sciences of Uzbekistan | Ruziev O.S.,Tashkent Institute of Irrigation and Melioration | Vakhidov A.,Karshi Engineering Economics Institute
Applied Solar Energy (English translation of Geliotekhnika) | Year: 2012

We study how heat losses through translucent coatings are affected by the partial absorption and heat transformation of the total solar radiation passing through the transluscent coatings of flat plate water-heating solar collectors; the radiation is incident on the frontal surfaces of the translucent coatings of their casings and is reflected from the antireflective surfaces of the heat-exchange panels of diffuse solar radiation collectors; the radiation is incident on the rear surfaces of the considered translucent walls. To allow for this factor in thermal engineering calculations for the "antireflective heat-exchange panel-translucent coating" system of the considered type of flat plate solar collectors, we introduce the effective coefficient of heat loss from the antireflective surface of a heat-exhange panel via the given translucent coating. We propose a calculation technique and the corresponding formula for determining the effective heat loss coefficient through the transluscent walls of flat plate water-heating solar collectors and present a practical calculation example for determining its value. © 2012 Allerton Press, Inc.


Rysbaev A.S.,Tashkent State Technical University | Tashatov A.K.,Karshi Engineering Economics Institute | Dzhuraev S.X.,Tashkent State Technical University | Khuzhaniyazov Z.B.,Tashkent State Technical University | And 2 more authors.
Journal of Surface Investigation | Year: 2011

Highly perfect epitaxial heterostructure CoSi 2 films have been grown on the surface of Si (111) and Si (100) single crystals by the method of molecular-beam epitaxy. The optimal regimes of the film growth with different thicknesses have been determined. It has been shown that short-term annealing of epitaxial films at T = 900-950 K leads to the formation of new CoSi 2/Si(111)-2 × 2 and CoSi 2/Si(100)-2 × 4 superstructures. © 2011 Pleiades Publishing, Ltd.


Imomov S.B.,Karshi Engineering Economics Institute | Kim V.D.,Karshi Engineering Economics Institute
Applied Solar Energy (English translation of Geliotekhnika) | Year: 2010

A hydrodynamic model of a water heat accumulator made of plastic bottles is described. Rows of plastic bottles on lattice shelves are regarded as stationary layers of coarse packing. The granulometric and hydrodynamic characteristics of a packing of plastic bottles as heat-retaining elements in a solar heating sys- tem are determined. © Allerton Press, Inc., 2010.


Uzakov G.N.,Karshi Engineering Economics Institute
Applied Solar Energy (English translation of Geliotekhnika) | Year: 2010

Issues of utilization of heat of products "breathing" and ventilation emissions of green houses are reviewed for feeding plants with carbon dioxide in a solar greenhouse. Efficiency of joint use of a greenhouse and solar greenhouses is shown to support the temperature-gas mode. © Allerton Press, Inc., 2010.


Komilov A.,Karshi Engineering Economics Institute
Applied Solar Energy (English translation of Geliotekhnika) | Year: 2013

The results of calculation of the limits of physical dimensions of a photovoltaic module with heat removal are presented; they allow one to prevent construction failure by means of deformation under influence of gravity and hydrostatic pressure of a heat carrier. © 2013 Allerton Press, Inc.


Khuzhakulov S.M.,Karshi Engineering Economics Institute | Uzakov G.N.,Karshi Engineering Economics Institute | Vardiyashvili A.B.,Karshi Engineering Economics Institute
Applied Solar Energy (English translation of Geliotekhnika) | Year: 2013

A new method for the regeneration of adsorbents using solar heating systems is proposed. It provides energy saving through the control of the gas composition and humidity in recessed fruit and vegetable storages. The effectiveness of solar heating systems, such as a "hot box," for the regeneration of adsorbents in fruit and vegetable storages is shown. © 2013 Allerton Press, Inc.


Imomov Sh.B.,Karshi Engineering Economics Institute | Dusyarov A.S.,Karshi Engineering Economics Institute
Applied Solar Energy (English translation of Geliotekhnika) | Year: 2014

The optical efficiency of a reflector-window system for solar passive heating systems with flat reflectors placed at the south and north sides of a building is determined. © 2014 Allerton Press, Inc.


Komilov A.G.,Karshi Engineering Economics Institute | Rakhimov N.Z.,Karshi Engineering Economics Institute
Applied Solar Energy (English translation of Geliotekhnika) | Year: 2014

A concept for improving the physical and technical indices of solar desalination by means of forced convection is studied. Dependence of physical dimensions of the condenser from the ambient parameters, cooled air temperature and its velocity are calculated. © 2014, Allerton Press, Inc.


Komilov A.,Karshi Engineering Economics Institute
Applied Solar Energy (English translation of Geliotekhnika) | Year: 2014

A concept for improving the physical and technical indices of solar desalination by means of forced convection is examined. The dependences of the evaporation rate on water temperature, air temperature and velocity are calculated. © 2014 Allerton Press, Inc.

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