The analysis of moisture mode of premises in the heating period at reconstruction of window blocks

Authors

  • I. Kolesnik Ph.D., Ukraine
  • V. Petrenko Ph.D. Associate Professor, Ukraine
  • I. Vetvitskiy Ph.D., Associate Professor, Ukraine
  • D. Vetvitskaya student, Ukraine
  • D. Vovk student, Ukraine

Keywords:

microclimate, Humidity regime, Walling, Condensation of water vapor

Abstract

Abstract. Purpose. The relative humidity of the air has a significant influence on the microclimate conditions in the heating season. As is known, window structures made of PVC profiles have high tightness, which is one of their advantages, as they provide high heat and sound insulation characteristics. On the other hand, the increased tightness of windows leads to a change in the temperature and humidity conditions in the room and, as a consequence, to possible condensation of excess moisture on the surfaces of insulating glass, window binders, slopes. This negatively affects not only the microclimate of the premises, but also on the enclosing structures of buildings, their durability and thermal characteristics. Since the existing windows are being massively replaced, the analysis of this issue is actual for today. Methodology. Theoretical and experimental studies were carried out on the basis of fundamental knowledge in the field of thermal processes and techniques for solving problems of heat transfer, modeling of dynamic processes, methods and analysis of random processes, methods of mathematical statistics and forecasting. Findings. To improve the humidity conditions of rooms it is recommended to use self-ventilating systems in products using intra-profile channels, as well as window units with built-in adjustable and self-regulating climate valves. To solve the problem of humidity in the premises, a forced forced-air ventilation system is proposed with the installation of heat exchangers-utilizers for heating the supply air with the heat of the exhaust air being removed. The proposed supply and exhaust units (recuperators) not only provide room with fresh air and normalize its microclimate, but also significantly reduce the cost of heating and air conditioning. These installations are recommended for use in rooms where non-upgraded PVC windows were installed. Originality. The main causes of condensation of water vapor on the inner surfaces of fences are established. This allows us to take measures to improve the moisture regime both at the design stage and in the already reconstructed buildings. Practical value. To improve the humidity conditions of rooms it is recommended to use self-ventilating systems in products using intra-profile channels, as well as window units with built-in adjustable and self-regulating climate valves. The use of ventilation ducts and self-regulating valves in window units provides the necessary infiltration of air in the room and are indicators of the modernity of windows. Supply-and-exhaust systems (recuperators) are recommended to be used in premises where non-modernized PVC windows were installed.

Author Biographies

I. Kolesnik, Ph.D.

Department of heating, ventilation and air quality, State Higher Education Establishment "Pridneprovsk State Academy of Civil Engineering and Architecture", 24-A, Chernishevskogo st., Dnepropetrovsk 49005, Ukraine, tel. +38 (0562) 47-16-00

V. Petrenko, Ph.D. Associate Professor

Department of heating, ventilation and air quality, State Higher Education Establishment “Pridneprovsk State Academy of Civil Engineering and Architecture”, 24-A, Chernishevskogo str., Dnipro 49600, Ukraine, t. +38 (0562) 47-59-77

I. Vetvitskiy, Ph.D., Associate Professor

Department of heating, ventilation and air quality, State Higher Education Establishment "Pridneprovsk State Academy of Civil Engineering and Architecture", 24-A, Chernishevskogo st., Dnepropetrovsk 49005, Ukraine, tel. +38 (0562) 47-16-00

D. Vetvitskaya, student

Department of heating, ventilation and air quality, State Higher Education Establishment "Pridneprovsk State Academy of Civil Engineering and Architecture", 24-A, Chernishevskogo st., Dnepropetrovsk 49005, Ukraine, tel. +38 (0562) 47-16-00

D. Vovk, student

Department of heating, ventilation and air quality, State Higher Education Establishment "Pridneprovsk State Academy of Civil Engineering and Architecture", 24-A, Chernishevskogo st., Dnepropetrovsk 49005, Ukraine, tel. +38 (0562) 47-16-00

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Published

2017-04-27

Issue

Section

Energy, ecology, computer technology in construction