Air-conditioning and ventilation simulator in subsurface space

Details Air-conditioning and ventilation simulator in subsurface space Air-conditioning and ventilation simulator in subsurface space

1996-12-20

1998-10-13

Trans, Vincent N.

Boots, shoes, and leggings

236 493, G06F 1700, F24F 700

Patent

active

058222278

ABSTRACT:
An air-conditioning and ventilation simulator for predicting environmental conditions in a subsurface space, which includes a first processing portion for obtaining the airflow velocity in branches constituting the subsurface space; a second processing portion for calculating initial values and short-term change values of wall temperature and field temperature in each of the branches, initial values and boundary values of temperature, water-vapor density and carbon dioxide concentration in each of the branches; a third processing portion for calculating the wall temperature, field temperature and airflow temperature in each of the branches; and a fourth processing portion for performing detailed calculation of the airflow velocity, temperature, humidity and carbon dioxide concentration for calculating time-varying data of the airflow temperature, water-vapor density and carbon dioxide concentration in each of the branches by using, as input data, the space structure model data, the airflow analysis result data obtained from the first processing portion, the thermal analysis result data obtained from the second processing portion, and wall and field temperature data obtained from the third processing portion.

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patent: 5226818 (1993-07-01), Feiock et al.
patent: 5505378 (1996-04-01), Park
patent: 5557555 (1996-09-01), Friot et al.
patent: 5590062 (1996-12-01), Nagamitsu et al.
"Subway Environmental Simulation Program and Subway Environmental Design Handbook Validation Through Field Testing. Part 1: Underplatform Exhaust System and Train Borne Resister Grid Test Program", published by U.S. Department of Transportation, Feb. 1983.

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