National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

Details

Guidelines for Recirculation on Exhaust Air.

PB83132001

Publication Date	1980
Personal Author	Hughes, R. T.; Amendola, A. A.
Page Count	18
Abstract	The use of exhaust air recirculation to conserve energy was analyzed. Recirculation decision logic, design and assessment, worker exposure, and system evaluation were outlined. Recirculation without premixing, air recirculation system monitoring, and recirculation air bypass were described. Costs, safe exposure concentrations, dilution, monitoring devices, systems flexibility, airflow rates and patterns, ventilation, and air cleaner efficiency calculations were discussed. The authors conclude that adherence to these guidelines is necessary, and caution that if the air contains human carcinogens, recirculation should not be attempted.
Keywords	Environmental surveys Industrial medicine Guidelines Exposure Toxicity Inspection Hazardous materials Recirculation Ventilation Air pollution Energy conservation Toxic substances Occupational safety and health
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	57U - Public Health & Industrial Medicine 57Y - Toxicology 94D - Job Environment 68G - Environmental Health & Safety 68A - Air Pollution & Control
Corporate Authors	National Inst. for Occupational Safety and Health, Cincinnati, OH. Div. of Surveillance, Hazard Evaluations and Field Studies.
Document Type	Technical Report
Title Note	Technical rept.
NTIS Issue Number	198305

Guidelines for Recirculation on Exhaust Air.

Guidelines for Recirculation on Exhaust Air.
PB83132001

Publication Date	1980
Personal Author	Hughes, R. T.; Amendola, A. A.
Page Count	18
Abstract	The use of exhaust air recirculation to conserve energy was analyzed. Recirculation decision logic, design and assessment, worker exposure, and system evaluation were outlined. Recirculation without premixing, air recirculation system monitoring, and recirculation air bypass were described. Costs, safe exposure concentrations, dilution, monitoring devices, systems flexibility, airflow rates and patterns, ventilation, and air cleaner efficiency calculations were discussed. The authors conclude that adherence to these guidelines is necessary, and caution that if the air contains human carcinogens, recirculation should not be attempted.
Keywords	Environmental surveys Industrial medicine Guidelines Exposure Toxicity Inspection Hazardous materials Recirculation Ventilation Air pollution Energy conservation Toxic substances Occupational safety and health
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	57U - Public Health & Industrial Medicine 57Y - Toxicology 94D - Job Environment 68G - Environmental Health & Safety 68A - Air Pollution & Control
Corporate Authors	National Inst. for Occupational Safety and Health, Cincinnati, OH. Div. of Surveillance, Hazard Evaluations and Field Studies.
Document Type	Technical Report
Title Note	Technical rept.
NTIS Issue Number	198305