@article{(Open Science Index):https://publications.waset.org/pdf/10006401,
	  title     = {Applicability of Overhangs for Energy Saving in Existing High-Rise Housing in Different Climates},
	  author    = {Qiong He and  S. Thomas Ng},
	  country	= {},
	  institution	= {},
	  abstract     = {Upgrading the thermal performance of building
envelope of existing residential buildings is an effective way to reduce
heat gain or heat loss. Overhang device is a common solution for
building envelope improvement as it can cut down solar heat gain and
thereby can reduce the energy used for space cooling in summer time.
Despite that, overhang can increase the demand for indoor heating in
winter due to its function of lowering the solar heat gain. Obviously,
overhang has different impacts on energy use in different climatic
zones which have different energy demand. To evaluate the impact of
overhang device on building energy performance under different
climates of China, an energy analysis model is built up in a
computer-based simulation program known as DesignBuilder based
on the data of a typical high-rise residential building. The energy
simulation results show that single overhang is able to cut down
around 5% of the energy consumption of the case building in the
stand-alone situation or about 2% when the building is surrounded by
other buildings in regions which predominantly rely on space cooling
though it has no contribution to energy reduction in cold region. In
regions with cold summer and cold winter, adding overhang over
windows can cut down around 4% and 1.8% energy use with and
without adjoining buildings, respectively. The results indicate that
overhang might not an effective shading device to reduce the energy
consumption in the mixed climate or cold regions.},
	    journal   = {International Journal of Civil and Environmental Engineering},
	  volume    = {11},
	  number    = {2},
	  year      = {2017},
	  pages     = {145 - 151},
	  ee        = {https://publications.waset.org/pdf/10006401},
	  url   	= {https://publications.waset.org/vol/122},
	  bibsource = {https://publications.waset.org/},
	  issn  	= {eISSN: 1307-6892},
	  publisher = {World Academy of Science, Engineering and Technology},
	  index 	= {Open Science Index 122, 2017},
	}