| 요약2 |
In order to reduce whole energy consumed in the building, the ratio that heating and air conditioning take in charge of within the building should be decreased considering heat loss and gain of the building. That is, heating and air conditioning system should provide the required spare energy only by calculating the energy demand of the building. The process of calculating heating and air conditioning energy demand is specified in EN ISO 13790(2008) and the calculation method is divided into quasi-steady-state calculation method and dynamic calculation method. Regarding quasi-steady-state calculation method, its calculation process is simpler comparing with dynamic calculation method, but its accuracy is not good. So the alternative that have the dynamic effect even in the condition of steady state is needed in order to raise the accuracy and the concept of gain and loss utilization factor are established for that reason. Gain and loss utilization factor are the experiential value and they gets different along the variables of αH,0 and τH,0 and those variables are decided by each country, however, they are current status that the values regulated in EN ISO 13790(2008) are used in domestic country not the values that are adequate for domestic environmental conditions. So this paper is willing to calculation method of the variables αH,0 and τH,0 to decide gain utilization factor that is adequate for domestic conditions through foreign and domestic standards. |