Numerical Analysis of Various Heat Countermeasures: Effects on Energy Consumption and Indoor Thermal Comfort in Densely Built Wooden House Area

被引:2
|
作者
Liu, Shanshan [1 ]
Levinson, Ronnen [2 ]
Narumi, Daisuke [3 ]
机构
[1] Tokyo Inst Technol, Dept Architecture & Bldg Engn, Yokohama 2268501, Japan
[2] Lawrence Berkeley Natl Lab, Heat Isl Grp, Berkeley, CA 94720 USA
[3] Okayama Univ, Grad Sch Environm & Life Sci, Okayama 7008530, Japan
关键词
urban heat island; densely built area; energy saving; indoor thermal comfort; heat countermeasure; BUILDING DENSITY; TEMPERATURE; ENVIRONMENT; MORTALITY; SYSTEMS; HEALTH; MODEL;
D O I
10.3390/atmos14101566
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Densely built areas with poor thermal insulation suffer from high thermal environmental risks and generally consume high energy in summer. Determining the relationship between density and energy consumption is necessary, particularly when implementing urban heat island (UHI) countermeasures. This study evaluated the effects of density and UHI countermeasures on the energy consumption and indoor thermal comfort of a detached house in a typical densely built wooden house area in Yokohama City, Japan. Three densities and six countermeasures were considered. Annual hourly simulations based on the SCIENCE-Vent thermal environment simulation model yielded the following results: in densely built wooden house areas, the energy consumption and thermal discomfort increased with density. The green roof yielded the largest energy savings in the cooling and heating seasons, demonstrating the highest annual energy savings with 5.7%. Density had little impact on rooftop countermeasures, but the effect of the high-reflectance walls increased with density, and the reduction in annual energy consumption (air conditioning and lighting) is 2.6%, 3.0%, 3.6% in 37%, 47%, and 59% density cases, respectively. The impact of thermal countermeasures on indoor thermal comfort varied according to the thermal control mechanism.
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页数:20
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