Numerical simulation of solar heat absorption within indoor space by means of composite grid method

Conference · Wed Dec 31 04:00:00 EST 1997

OSTI ID:345221

Omori, Toshiaki ^[1]; Murakami, Shuzo; Kato, Shinsuke ^[2]

---

1. Tokyo Gas Co. Ltd. (Japan). Energy Technology Research Inst.
2. Univ. of Tokyo (Japan). Inst. of Industrial Science

This paper describes the method for numerical simulation of solar radiation entering indoor spaces through fenestration. The proposed method can systematically deal with the interception of sunlight by buildings in the outdoor space and obstacles in the indoor space by tracing a large number of particles directed toward the sun. Configuration factors from the fenestration to the sky are also three-dimensionally treated by accounting for outdoor geometries. Distribution of the solar heat absorption in the indoor space is calculated by assuming radiation equilibrium. After the solar heat absorption analysis is carried out, heat transfer analysis in the space is conducted taking account of longwave radiation, convective heat transfer, thermal conduction, and cooling/heating by air conditioning. Then, the indoor thermal environment is evaluated using the resulting temperature distribution of air and indoor surfaces. To evaluate the applicability of these procedures, the thermal environment in a model hall with large glass windows and an overhang is predicted. The analyzed hall is assumed to be located near a tall building.

• OSTI ID: 345221
• Report Number(s): CONF-9702141--
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
AIR CONDITIONING
BUILDINGS
COMPUTERIZED SIMULATION
COOLING LOAD
ENERGY ABSORPTION
HEAT GAIN
SHADING
SOLAR RADIATION
THERMAL COMFORT
WINDOWS