SIMULATED OCCUPANCY TESTS AND AIR DISTRIBUTION IN A 480-PERSON COMMUNITY FALLOUT SHELTER
Abstract
Results of simulated occupancy tests determining the ventilation rate to maintain a habitable thermal environment in a 480-person community shelter are furnished. Effects of manual auxiliary air moving devices on the air distribution patterns in the shelter were observed. The shelter was an above ground, one-story structure. Sand filling was used for the exterior hollow concrete masonry unit bearing walls and the roof. The ventilation system consisted of two dual-unit exhaust fans, 7200 cfm total capacity, 15 cfm per occupant was required to maintain an average effective temperature (ET) in the shelter with ventilation conditioned to the Washington, DC, area at 90% reliability and 10 sq ft per person. Results obtained agree with thermal analysis of the shelter. When the shelter was overcrowded to 640 persons at 7-5 sq ft/person and ventilation at 15 cfm at the same ambients, the average ET was over 82 degrees and approached 85 degrees maximum. Plots of air velocity patterns were made using the installed ventilation system by itself and combined with punkahs. Punkahs were found to provide a more equitable distribution of the available ventilation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1965
- Accession Number
- AD0666213
Entities
People
- Michael M. Dembo
- Oddvar W. Svaeri