Heat Load

Airborne bacteria-carrying particles (BCPs) in an operating room (OR) can cause post-operative infections in the patients. The ventilation system in the OR is crucial in removing or diluting airborne BCPs. This study numerically assessed a newly developed OR ventilation scheme – temperature-controlled airflow (TAF), with special focus on the influence of heat loads on the airflow and BCPs concentration. TAF supplies clean air at different temperature levels to different zones and establishes a high-momentum downward airflow pattern over the operating table.

In summer, the shady planting is expected for providing shadow on building envelope and reducing reflected solar radiation from the front yard. The heat load simulation program which can take into consideration the shadow effects caused by trees including the effect of the long wave radiation exchange is developed by the authors. The program used to examine the effects of trees on the room thermal environment as well as heating and cooling loads of a model house. In the simulation, two kinds of trees, evergreen broad-leaved tree and deciduous broad-leaved tree were assumed.

This paper examines air-conditioning loads by several air-conditioning patterns and heat methods of asuper high-rise residence by using the dynamic simulation software THERB (the simulation softwareof the thermal environment of residential buildings) which can estimate temperature, humidity, sensibletemperature, and heating/cooling load for multiple zones of buildings. As high-rise residences, the ratiothat the structural skeleton dominates a floor area is bigger than that of ordinary residences, and itsskeleton is used concrete generally.