An important priority of Ukraine's economic policy is the careful use of energy. The country has a broad-based energy efficiency policy, and energy efficiency is complex, covering both the legislative framework and technical innovations. One of the effective ways to reduce energy costs for the needs of the national economy is to carry out thermal modernization of the heating system. In this article economic indicators of thermal sanitary measures during reconstruction of the heating system of the object are given. In the reconstruction of the heating system, the following thermal renewal measures were adopted for comparison: installation of the solar roof, reconstruction of the heating system and installation of the heating air solar system. The purpose of this work is to establish the economic indicators of the thermal renovation measures in the reconstruction of the heating system of an apartment building using a solar roof at the different values of discount index. The use of modern methods of evaluating the cost-effectiveness of thermal modernization is taken into account in the latest concept of economic calculations, in particular the recommendation of United Nations Industrial Development Organization. Energy audit of the heating system was carried out taking into account the different values of discount index r. There were optimized the thermal renewal variants taking into account the different values of discount index was carried out. Using of the solar roof gives a possibility to design of effective energy-saving heating systems in the buildings. Solar air heating system has a high value of the simple payback time, but it is useful as aggregate energy saving variant and provides economic effect.
The article presents the results of theoretical research to achieve the maximum effect in determination of the economically feasible level of buildings thermal protection. It must be optimal both thermally and economically, an indicator of which there are the costs. Graphical and analytical dependences are given. The research results substantiate the maximum effect when different thermal insulating materials are used. The aim is to increase the efficiency of energy saving measures, reduce their cost by optimizing the cost of thermal energy and insulating materials, determining the optimization criteria and justification for choice the optimal insulating material and its thickness, and determining the optimal thermal resistance, identifying ways to improve energy efficiency and substantiation of the calculation method. One of the most common thermal renovation measures, namely insulation of external walls, is considered. An economic assessment has been conducted, which is an important factor in a certain energy-saving proposition. The solution of the problem is presented, which includes two stages. The result of the first stage is the selection of the optimal heat-insulating material. The second stage is a substantiation of economically expedient thickness of the heat-insulating material. The obtained results make it possible to increase the efficiency of energy saving in thermal renovation of buildings taking into account both energy and economic aspects. In this paper the results of mathematical provement of such factor importance as the thermally conductive cost of the heat-insulating material at their thickness optimization are presented.
The article presents the results of theoretical and experimental developments regarding the marking of scans and patterns of fittings of the ventilation system, provided that the unification of installation and procurement work. The aim of the work is to create a graph-analytical method to unify the construction of patterns of ventilation fittings, in particular in the design and manufacture of adapters of different shapes and sizes; increasing the efficiency of procurement work for the installation of ventilation systems in production facilities by minimizing material waste during their manufacture, and reducing the material consumption of products. The application of the proposed graphic-analytical method will increase the efficiency of procurement and installation work and thus reduce the amount of waste and material consumption for the manufacture of ventilation fittings for various purposes.
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