Investigation of the Transparent Insulations Effect on the Thermal and Optical Performance in Different Climates

The case study, examined was a fifty -square -meter office with a window measuring 9 meters by 1.5 facing the sun. In six different cities, the performance of seventeen types of transparent insulations has been investigated, and its effects on optical comfort, thermal comfort and energy consumption have been evaluated. The system has been analyzed dynamically by Energy Plus software, and to validate the modelling method, the case study of a numerical -experimental study was exactly modelled and the obtained results were compared with the corresponding results in the reference. Creating shadow strips, situated in the double glazed window have been programmed and controlled in two ways Always-On and Scheduled , and results obtained from these control modes have been compared with each other. In the end, firstly, results related to hours of the thermal and optical discomfort which are calculated based on ASHRAE 55 are presented for different insulators in each city. Secondly, all parts of the energy consumption (cooling, heating, and building lighting equipment) have been calculated and compared with each other in different control modes, different cities and different insulators. Results showed that among different parts of the energy consumption, the chosen control mode has remarkable effects on lighting consumption. Furthermore, in tropical regions that usually receive more solar radiation, heating power consumption is more sensitive to the class of the chosen insulator. In cities having high solar radiation, the use of these insulators can reduce energy consumption and optical discomfort time in the buildings up to 13% and 97%, respectively.

کلیدواژه ها:

Thermal comfort ، Optical comfort ، Energy Plus ، ASHRAE 55 ، Transparent insulation.