EN Assessment of the window replacement influence on building energy consumption and human thermal comfort on the basis of dynamic modeling

• Main Authors: N. Buyak, V. Deshko, I. Bilous, M. Gureev, O. Holubenko
• Format: Article
• Language: English
• Published: Odessa National Academy of Food Technologies 2020-02-01
• Series: Holodilʹnaâ Tehnika i Tehnologiâ
• Subjects: energy need; energy saving windows; thermal comfort; pmv; mean radiant temperature; operating temperature
• Online Access: https://journals.onaft.edu.ua/index.php/reftech/article/view/1656

The dynamic modeling of the energy characteristics of building structures with the help of energy-saving double-glazed windows was carried out in the work. The influence of different variants of windows replacement on the heat energy state of a typical mass building for various glazing coefficients in dynamic grid models created on the basis of the Energy Plus software product was analyzed. It is found that argon-filled glass, selective-coated glass on the outer and inner glass can reduce the energy requirement for the building by 8-10% compared to the double-glazed glass without selectively coating and filling the chambers with air. The load on the heating system is significantly different for the orientations North and South. It is assumed that the coefficient of glassy glass in the orientation of the South during the off-season (autumn / spring), less heating (switched on / off later). For North and South orientations, energy-saving windows with selective coating and / or filled up with inert gas cells have a different effect, which is explained by the coefficients of solar heat transmission, which was obtained on the basis of the simulation model. In addition, current standards in Ukraine do not provide all variants of the coefficients of optical transmittance characteristics of solar heat gains. In this work, a dynamic hourly simulation of the building energy demand in heated space for representative rooms N and S oriented for different glazing coefficients and window types has been carried out. Range of PMV change, average radiating temperature and air temperature in the room for the heating period were estimated. It was established that changing windows glazing can affect the PMV to change almost two times, which indicates the need for an integrated approach to the assessment of thermal comfort. Namely, the importance of taking into account the dynamic changes in the environment parameters and possible thermo-modernization were detected