Estimation of Indoor Temperature Increments in Summers Using Heat-Flow Sensors to Assess the Impact of Roof Slab Insulation Methods
| Autor: | Yutong Li, Atsushi Teramoto, Takaaki Ohkubo, Akihiro Sugiyama |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Renewable Energy
Sustainability and the Environment Geography Planning and Development heat transfer thermal insulation heat-flow density environmental simulation chamber factory roof slab temperature rise indoor thermal environment heat-flow sensor Building and Construction Management Monitoring Policy and Law |
| Zdroj: | Sustainability; Volume 14; Issue 22; Pages: 15127 |
| ISSN: | 2071-1050 |
| DOI: | 10.3390/su142215127 |
| Popis: | Improving the thermal insulation performance of buildings is crucial for saving energy. Currently, the insulation performance can be quantified based on the thermal resistance and thermal transmittance (U-value). However, for owners, these data are not readily available for the verification of different insulation methods. To address this, a solution could involve establishing a connection between specialized evaluation indicators and temperature, a common physical quantity. In this study, static and dynamic heat-transfer experiments were performed using an environmental simulation chamber and heat-flow sensors. Based on the tests, a simple predictive formula for the heat-flow density over time was established. After analyzing a full-scale building model, six cases of the heat-flow density versus temperature rise in indoor environments were obtained. This approach may aid owners in visually assessing the insulation performance of buildings by establishing a conversion relationship between the heat-flow density and temperature. In addition, the performance of 14 experimental specimens, including self-developed and code-documented thermal insulation materials and construction methods, was evaluated. In the simulations, after turning off indoor cooling equipment for 6 h during hot summers, the average indoor temperature increase for a roof with insulation was only 52% of that without insulation. |
| Databáze: | OpenAIRE |
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