Thermal Modernization of Heating System by Using the Solar Roof

Abstract

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.

Prospects for development of geothermal energy in Lviv region

“…Thus, the construction of power plants and drilling wells cost about 2 -5 million euros per 1 MW of electric power, while the average cost of energy is 0.04 -0.10 euros per kWh. In addition, the thermal waters of Lviv region have a high mineralization of more than 30 g/dm 3 , as well as high hydrogen sulfide content. Therefore, it is expedient to consider options for using low-temperature geothermal waters of Lviv region for heat generation, in particular for heat supply systems of settlements.…”

“…According to the Energy Strategy of Ukraine, the share of renewable energy sources in the structure of electricity production by 2025 should be 13% [1]. It should be noted that the first place among renewable energy sources in Ukraine is occupied by solar energy, and it can be used to generate both electricity and heat [2], [3]. In recent years, wind energy has been increasingly used in Ukraine to generate electricity.…”