Investigation of Termomodernized Building's Microclimate with Renewable Energy

Vitalii Nalyvaiko,Ivan Radko,Ievgen Antypov,Andrii Zhyltsov,Oleksandr Okushko,Anatolii Mishchenko

doi:10.1051/e3sconf/202015407011

Vitalii Nalyvaiko, Ivan Radko + Show 4 more

Open Access

https://doi.org/10.1051/e3sconf/202015407011

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Abstract

The values of indoor air temperatures in separate premises of the educational building of National University of Life and Environmental Sciences of Ukraine before and after the works on the thermo-modernization of the building were determined. A significant reduction in energy expenditure was achieved through the use of solar panels and solar collectors when changing the energy control algorithm and equipment for implementing this algorithm. The coldest rooms and premises with excess temperature are detected. The causes of uneven distribution of temperatures were analyzed. The possibility of equalizing the distribution of internal air temperatures and reducing the dependence of their values on fluctuations of external air temperatures is shown. With the help of the engineering methodology of calculation, energy efficiency of the so-called intermittent heating mode is demonstrated on the example of an educational room. It is shown that the use of the intermittent heating method can reduce energy consumption for heating. To further reduce energy costs, it is proposed to use a heat pump to compensate for peak loads and work at night at a special rate.

Highlights

The beginning of a new direction of buildingsconstructionwith increased requirements for efficiency appeared after the global energy crisis on 1974. It was a respond on the criticism of the UN International Energy Conference (IEC) experts about the fact that modern buildings had significant reserves for increasing their thermal efficiency, but the researchers have not sufficiently studied the features of their thermal regime, and the designers were not able to optimize the flows of heat and mass in the external enclosures of the house in general
When forming a flow control algorithm, it is necessary to make a certain compromise decision taking into account all known factors
According to the educational building number 8 of NULES of Ukraine, built in 1965, energy audit resultsactual heating costs exceeded the normative ones over 10% [3]

Summary

Introduction

The beginning of a new direction of buildingsconstructionwith increased requirements for efficiency appeared after the global energy crisis on 1974 It was a respond on the criticism of the UN International Energy Conference (IEC) experts about the fact that modern buildings had significant reserves for increasing their thermal efficiency, but the researchers have not sufficiently studied the features of their thermal regime, and the designers were not able to optimize the flows of heat and mass in the external enclosures of the house in general. When forming a flow control algorithm, it is necessary to make a certain compromise decision taking into account all known factors. This is the main lever for reducing the cost of heat transfer. It is not easyto do, because the room is characterized by thermal inertia

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