Determination of Equivalent Thermal Conductivity of Window Spacers inConsideration of Condensation Prevention and Energy Saving Performance
| Autor: | Ji-Yong Yu, Gun-Joo Jung, Kyu-Nam Rhee, Mi-Su Shin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Control and Optimization
Renewable Energy Sustainability and the Environment Chemistry 020209 energy Condensation Energy Engineering and Power Technology Heat losses Thermodynamics 02 engineering and technology thermally improved spacer (TIS) condensation prevention temperature factor energy saving total U-value monograph Outdoor temperature Thermal conductivity 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering temperaturefactor Engineering (miscellaneous) Building energy simulation Energy (signal processing) Energy (miscellaneous) |
| Zdroj: | ENERGIES(10): 5 Energies; Volume 10; Issue 5; Pages: 717 |
| Popis: | This study investigated the impact of thermally improved spacers (TISs) on the condensation prevention and energy saving performances of residential windows. The temperature factor and total U-value were analyzed with the two-box model, by which the TISs are represented with the equivalent thermal conductivity. The results showed that the TISs could increase the temperature factor by up to 12%, and this significantly improved the condensation prevention performance. In addition, it was proved that the TIS enables the prevention of the condensation at an outdoor temperature that is 4.2 degrees C to 15.7 degrees C lower compared with the conventional spacer. Also, it was shown that the TISs reduce the total U-value by an amount from 0.07 W/m(2)K to 0.12 W/m(2)K, implying that the heat loss through the window is reduced by a rate from 2.8% to 8.2%. In addition, the results of the whole building energy simulation proved that the TISs can reduce the annual heating-energy consumption by a rate from 3.0% to 6.3%. The results were then used for the development of monographs to determine the equivalent thermal conductivity of a window spacer that can meet the performance criteria in terms of condensation prevention and energy saving. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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