Download or read book Methods of Testing Performance of Laboratory Fume Hoods written by and published by . This book was released on 2016 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Method of Testing Performance of Laboratory Fume Hoods written by American Society of Heating, Refrigerating and Air-Conditioning Engineers and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Method of Testing Performance of Laboratory Fume Hoods written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Method of Testing Performance of Laboratory Fume Hoods written by and published by . This book was released on 1993 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ASHRAE Standard Method of Testing Performance of Laboratory Fume Hoods written by American Society of Heating, Refrigerating and Air-Conditioning Engineers and published by . This book was released on 1995 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ANSI ASHRAE standard 110 1995 written by and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Method of Testing the Performance of Laboratory Fume Hoods Using Carbon Dioxide and Video Exposure Monitoring written by Peter F. Orio and published by . This book was released on 1996 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fume Hood Performance Measurements written by Cecilia Rhoneʹe Rodgers and published by . This book was released on 2006 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laboratory fume hoods at the University of Kentucky were quantitatively and qualitatively evaluated for fume and hood performance. Testing included face velocity measurements and flow visualization. the ANSI/ASHRAE 110 method utilizing a tracer gas, an infrared spectrometer, and a mannequin was also performed. Concentrations in the mannequin's breathing zone were recorded to determine a level of contaminant leakage. The fume hoods were then tested using a new procedure, the smoke particle challenge method. The experimental method is one that builds on the ANSI/ASHRAE standard by using a TSI P-trak to qualitatively measure if there is any escape of any contaminants from the hood. The results from each test were reviewed individually, and then compared to each other in order to establish a comprehensive evaluation for the separated procedures.
Download or read book Method of Testing Performance of Laboratory Fume Cupboards written by American Society of Heating, Refrigerating and Air-Conditioning Engineers and published by . This book was released on 1995 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laboratory Fume Hoods written by G. Thomas Saunders and published by John Wiley & Sons. This book was released on 1993-05-06 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: A thorough reference on adequate fume hood design and use. Dissects this device down to its bare essentials. Examines how and why a fume hood works. The book will help you test, locate, ventilate and maintain hoods which are all on site, field-generated and both old and new.
Download or read book An Evaluation of Four Quantitative Laboratory Fume Hood Performance Test Methods written by Lisa Michele Woodrow and published by . This book was released on 1987 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American National Standard for Laboratory Ventilation written by Aiha and published by AIHA. This book was released on 2003 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advantages of Using the ANSI ASHRAE 110 1995 Tracer Gas Test Method Vs the ANSI AIHA Z9 5 1992 Face Velocity Test Method for the Chemical Laboratory Hood Certification written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A total of 484 tests were performed on chemical laboratory hoods (chemical hoods), using the ANSI/AIHA Z9.5-1992 (American National Standard Institute / American Industrial Hygiene Association, Laboratory Ventilation Standard) test method (ANSI-1992). Same numbers of the tests were performed on same chemical hoods, using the ANSI/ASHRAE 110-1995 (American National Standards Institute/American Society of Heating, Refrigerating, and Air Conditioning Engineers, Method of Testing Performance of Laboratory Fume Hoods) test method (ASHRAE 110). The three types of chemical hoods available for this study were Constant Air Volume (CAV), Variable Air Volume (VAV), and Low Flow. Overall, CAV hoods had the highest passing rate for the ASHRAE 110 (83%) followed by VAV hoods (82%) and low flow hoods (68%). The X2 test for homogeneity found a statistically significant difference between the test outcomes (pass/fail) of the ASHRAE 110 and the ANSI-1992 methods (X2 = 4.248, P=0.038) for VAV hoods only. Overall, 18% of the CAV and VAV chemical hoods tested in the 80-120 feet per minute (fpm) average face velocities, failed to meet the ASHRAE 110 test criteria. If the ANSI-1992 test method was performed alone, 18% of the chemical hoods would be certified while they were not able to meet the ASHRAE 110 criteria. Logistic regression analysis for VAV and CAV chemical hoods revealed that for VAV chemical hoods, the ASHRAE = Velocity model and for CAV chemical hoods, the multi variable regression model ASHRAE = ANSI + Velocity were appeared to be the best model for the ASHRAE 110 test outcome prediction.
Download or read book Performance Testing of Laboratory Fume Hoods at East Tennessee State University written by Raymond E. Ivany and published by . This book was released on 1983 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Prudent Practices in the Laboratory written by National Research Council and published by National Academies Press. This book was released on 2011-03-25 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prudent Practices in the Laboratory-the book that has served for decades as the standard for chemical laboratory safety practice-now features updates and new topics. This revised edition has an expanded chapter on chemical management and delves into new areas, such as nanotechnology, laboratory security, and emergency planning. Developed by experts from academia and industry, with specialties in such areas as chemical sciences, pollution prevention, and laboratory safety, Prudent Practices in the Laboratory provides guidance on planning procedures for the handling, storage, and disposal of chemicals. The book offers prudent practices designed to promote safety and includes practical information on assessing hazards, managing chemicals, disposing of wastes, and more. Prudent Practices in the Laboratory will continue to serve as the leading source of chemical safety guidelines for people working with laboratory chemicals: research chemists, technicians, safety officers, educators, and students.
Download or read book Ventilation for Control of the Work Environment written by William A. Burgess and published by John Wiley & Sons. This book was released on 2004-07-12 with total page 575 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of Ventilation Control of the Work Environment incorporates changes in the field of industrial hygiene since the first edition was published in 1982. Integrating feedback from students and professionals, the new edition includes problems sets for each chapter and updated information on the modeling of exhaust ventilation systems, and thus assures the continuation of the book's role as the primary industry textbook. This revised text includes a large amount of material on HVAC systems, and has been updated to reflect the changes in the Ventilation Manual published by ACGIH. It uses both English and metric units, and each chapter concludes with a problem set.
Download or read book An Investigation of Factors Affecting the Performance of Laboratory Fume Hoods written by and published by . This book was released on 1995 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: A 'user tracer gas test' was performed on laboratory hoods, with a human subject standing in front of the hood, to assess hood containment ability. The relationship of face velocity and cross draft variables to hood containment ability is investigated. The ability of these variables and other tests, such as smoke challenges or tracer gas tests performed with a manikin at the hood, to predict the results of the user tracer gas test is evaluated. All of the laboratory hoods tested in this study were identical bench top bypass hoods with horizontally sliding sashes. A face velocity traverse, cross draft measurements, a pitot traverse to measure exhaust flow, a smoke test, a manikin tracer gas test, and a user tracer gas test were performed on each hood in several different sash positions. Based on the data collected, face velocity, its distribution and variability, and the magnitude of cross drafts relative to face velocity are important variables in determining hood leakage. 'Unblocked' vortices, formed such that no physical barrier exists between the vortex and room air or a person in front of the hood, are identified as important sites of leakage. For the hoods evaluated in this study, unblocked vortices were observed along the beveled side edges. The data support the hypothesis that in the presence of a person standing in front of the hood, leakage is more likely to occur if unblocked vortices are formed than if all vortices are blocked. Evidence suggests that cross drafts are more likely to cause leakage when flowing in a direction that may cause separated flow along a beveled edge of the hood and thereby augment the unblocked vortices along the edge. Results indicate that smoke tests, manikin tracer gas tests, and average face velocity all serve as useful monitoring techniques. Face velocity measurements and smoke tests, which are easy and inexpensive, may provide information which is as valuable as traditional manikin tracer gas tests.
