Graphic Method Advantages of Determination of Vertical Glazing ­insolation Coefficient

Abstract

Introduction. One of components of the required power of the ventilation and air conditioning system of the room during the warm and transitional periods there are heat gains from solar radiation therefore reliable determination of insolation coefficient of a vertical protection is important in engineering practice. Definition of heat gains from solar radiation is required also when calculating the power passport of the building which is carried out according to the regulation 50.13330.2012 Thermal protection of buildings. Revised edition Construction Norms and Regulations 23-02-2003. Object of this work research is the insolation coefficient for vertical glazing, heat gains from solar radiation during the warm and transitional periods of year. The purpose to develop recommendations about specification of insolation coefficient by graphic methods when calculating heat gains from solar radiation is set. Materials and methods. In work approaches graphic and analytical (trigonometrical dependences) used and also data of long-term observations of climatic parameters are applied. Results. The existing methods of definition of heat gains from solar radiation show high efficiency in practice of engineering calculations, however specification of value of insolation coefficient is required. Conclusions. When determining heat gains from solar radiation it is necessary to carry out after application of the existing methods of engineering calculations an inspection of true value of insolation coefficient for checkout time taking into account the area surrounding buildings and designs of the wall panel in which the window is installed.