Open AccessA Study on the Insulation Effect of the Roof Greening Overhead Structure in Hot-moist Regions
Author(s) -
Xueli Jin,
Yanjia Hu,
Guiting Zhou,
Zhilu Huang,
Rongying Li,
Qi Meng
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/330/2/022018
Subject(s) - roof , air conditioning , overhead (engineering) , green roof , environmental science , greening , sowing , engineering , civil engineering , mechanical engineering , political science , law , biology , botany , electrical engineering
The climate in hot-moist regions like Guangdong is characterized as short in summer and long in winter, which imposes high insulation requirements on the roof of houses. In this case, this paper proposes a roof greening overhead structure, which is developed by making a bracket under the existing planting box after reinforcing the bottom thereof, thus there will be an overhead layer with a height of 300mm between the planting box and the roof. The study used three office rooms with identical conditions on the top floor of the office building as the test rooms. The roofs of the three rooms were set as the roof with the overhead planting box, the roof with the existing planting box and the reference roof, respectively. The temperatures of the structural layers in the three test rooms were measured under the non-air-conditioning closed conditions in summer. The hourly power consumptions of the air-conditioners in the three test rooms were measured under the air-conditioning closed conditions in summer. The results indicates the natural ventilation formed by the overhead structural layer can improve the overall insulation effect of the roof. The energy saving rates of the air conditioners in the room with the overhead planting box on the roof reached 28.2%.