Abstract

At the end of the 90s, with the introduction of changes in the regulatory documents of the Russian Federation №3 to SNiP II-3-79*, regulatory requirements for thermal protection of buildings were revised towards increase. For this reason, the buildings built till 2000 don't conform to modern requirements. The actual solution of this problem is to carry out works on renovation of facades of the existing buildings with the use of innovative materials. As object of research one of educational cases of Peter the Great St. Petersburg Polytechnic University has been chosen, where by practical consideration the size of the actual thermal resistance of external walls has been determined by heat flux meter, the numerical value of which was significantly lower than the standard values. Based on the obtained data two modern ways of thermal insulation of facades (Ventilated Facade System (VFS) and External Thermal Insulation Composite System (ETICS)) have been analyzed, the assessment of energy saving potential and the discounted payback period of the investments directed to warming of facades has been made.

Highlights

  • About 95% of the buildings of the total amount existing housing stock in Russia do not correspond to modern requirements for thermal insulation, i.e. they are obsolete

  • In addition to improving the appearance of buildings, raise thermal insulation of the building envelope leads to decrease of transmission heat losses [1,2,3,4,5,6]

  • According to the experience results: – thermotechnical characteristics and envelopes of the building were evaluated with regulatory requirements [10]

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Summary

Introduction

About 95% of the buildings of the total amount existing housing stock in Russia do not correspond to modern requirements for thermal insulation, i.e. they are obsolete. The physical state of the building facades is often faulty. In this regard, measures for heat insulation of external building envelope should be recognized as reasonable. In addition to improving the appearance of buildings, raise thermal insulation of the building envelope leads to decrease of transmission heat losses [1,2,3,4,5,6]. The lower the heat loss in the building, the lower the amount of thermal energy is required to bring to the building from a heat supply source to compensate for transmission losses. The thermal insulation leads to decrease energy consumption in the building and to reduction of payments for heating [3,4,5,6]

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