Download or read book Energy Efficient Laboratory Fume Hood written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The present invention provides a low energy consumption fume hood that provides an adequate level of safety while reducing the amount of air exhausted from the hood. A low-flow fume hood in accordance with the present invention works on the principal of providing an air supply, preferably with low turbulence intensity, in the face of the hood. The air flow supplied displaces the volume currently present in the hood's face without significant mixing between the two volumes and with minimum injection of air from either side of the flow. This air flow provides a protective layer of clean air between the contaminated low-flow fume hood work chamber and the laboratory room. Because this protective layer of air will be free of contaminants, even temporary mixing between the air in the face of the fume hood and room air, which may result from short term pressure fluctuations or turbulence in the laboratory, will keep contaminants contained within the hood. Protection of the face of the hood by an air flow with low turbulence intensity in accordance with a preferred embodiment of the present invention largely reduces the need to exhaust large amounts of air from the hood. It has been shown that exhaust air flow reductions of up to 75% are possible without a decrease in the hood's containment performance.
Download or read book Energy and Cost Savings for Variable Air Volume VAV Laboratory Fume Hoods in Two University Research Buildings written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The volume of lab exhaust for Engineering Building 1 (EB-1) and Partners III, which are research labs located on North Carolina State University's Centennial Campus, is measured and analyzed. There are three main objectives. The first is to determine how the actual system exhaust compares to the total design capacity of the lab HVAC system. Next, the potential additional savings that would result from carefully keeping fume hoods closed when no one is working in the hood. Then, estimate the actual savings that result from using variable air volume (VAV) fume hoods in place of constant volume (CV) hoods. Lab buildings require much more energy for the HVAC system than other academic buildings because of their high minimum airflow set points, once-through air for supply, and high static pressures for the ventilation system. VAV fume hoods can reduce the HVAC energy requirements by reducing the hood exhaust flow to about one-fourth of the full flow when the fume hoods are closed. However, it is total lab exhaust that drives energy use, and the actual reduction in total exhaust cannot be assumed to be equal to a reduction in fume hood exhaust. This is true in EB-1 because minimum airflow set points are 10-12 air changes per hour (ACH), and a general exhaust box maintains this minimum. Thus, when all 70 fume hoods in EB-1 were closed on Friday evening before the Labor Day holiday in 2005 there was a drop of 14,166 CFM in fume hood exhaust. However, total exhaust dropped by only 8,156 CFM, which is 58% as much. Therefore, energy savings made possible by closing the fume hoods would be grossly overestimated if the drop in total lab exhaust had been assumed to be equal to the drop in fume hood exhaust. The total exhaust rate was determined to be almost constant at about 68% of the maximum design airflow for EB-1 during the trended period. The total exhaust was relatively constant over the trended period of about one month because most of the labs were controlled by the minim.
Download or read book Reduced Worker Exposure and Improved Energy Efficiency in Industrial Fume hoods Using an Airvest written by and published by . This book was released on 1992 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reduction in the breathing zone concentration of an experimentally simulated pollutant, by factors ranging from 100 to 800, was observed with the device (called an airvest). With use of the airvest by the worker, the hood face velocity can be reduced, leading to substantial energy savings in conditioning of make up air in the building. The airvest works by elimination or ventilation of the eddy that develops in front of a worker when the worker stands in the open face of a fume hood. Normally this eddy draws some of the pollutant (commonly generated near and in front of the worker) towards the worker's breathing zone. Experiments sing a heated full-size mannequin were conducted with a full scale walk-in fume hood. Sulfur hexafluoride was used to simulate pollutant generation and exposure during a work situation. Flow visualization with smoke was also undertaken to evaluate the airvest qualitatively. 3 refs.
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 Laboratory Fume Hoods Explained written by Chip Albright and published by . This book was released on 2020-10-31 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "It doesn't matter if the hoods work, it only matters that we have them and that people assume they work."This callous comment from a laboratory owner who was preparing to build a new laboratory shocked fume hood designer and manufacturer, Chip Albright and convinced him to write this book. Albright's 40 years in the fume hood industry took him into hundreds of laboratories around the world and exposed the fact that the fume hood is the most misunderstood and misused safety device in most laboratories. Until now, understanding the complexity of laboratory ventilation systems was a nearly impossible feat for most. This book takes a step by step approach to explaining the interface between the fume hood, the laboratory ventilation system and the building HVAC. It reveals not only the failings of these systems, but suggests solutions for making them better. Albright's holistic approach to the subject is refreshing and effective. If you own or work in a laboratory, this book is required reading.Finally, a single source that includes:?the history of the fume hood?a detailed explanation of how a fume hood works?why most fume hoods do not perform effectively?why all laboratory users should be concerned?how to ensure that your laboratory fume hood is actually keeping your laboratory safe
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 The Effect of Room Air Challenge on the Efficiency of Laboratory Fume Hoods written by Knowlton J. Caplan and published by . This book was released on 197? with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ASHRAE Laboratory Design Guide written by and published by Ashrae. This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Reference manual for planning, design, and operation of laboratory HVAC systems to reduce the laboratory's energy footprint while ensuring safety, providing good comfort and indoor air quality, and protecting the integrity of experiments; includes online access to electronic design tools that illustrate features of laboratories and provide practical design aids"--
Download or read book A Performance Study of Laboratory Fume Hoods written by C. G. Detwiler and published by . This book was released on 1954 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy and Cost Savings for Variable Air Volume VAV Laboratory Fume Hoods in Two University Research Buildings written by Scott Michael Parker and published by . This book was released on 2006 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: HVAC, Exhaust, Trend, Airflow.
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 1995-09-16 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume updates and combines two National Academy Press bestsellers--Prudent Practices for Handling Hazardous Chemicals in Laboratories and Prudent Practices for Disposal of Chemicals from Laboratories--which have served for more than a decade as leading sources of chemical safety guidelines for the laboratory. Developed by experts from academia and industry, with specialties in such areas as chemical sciences, pollution prevention, and laboratory safety, Prudent Practices for Safety in Laboratories provides step-by-step planning procedures for handling, storage, and disposal of chemicals. The volume explores the current culture of laboratory safety and provides an updated guide to federal regulations. Organized around a recommended workflow protocol for experiments, the book offers prudent practices designed to promote safety and it includes practical information on assessing hazards, managing chemicals, disposing of wastes, and more. Prudent Practices for Safety in Laboratories is essential reading for people working with laboratory chemicals: research chemists, technicians, safety officers, chemistry educators, and students.
Download or read book Laboratory Design Construction and Renovation written by National Research Council and published by National Academies Press. This book was released on 2000-05-12 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laboratory facilities are complex, technically sophisticated, and mechanically intensive structures that are expensive to build and to maintain. Hundreds of decisions must be made before and during new construction or renovation that will determine how successfully the facility will function when completed and how successfully it can be maintained once put into service. This book provides guidance on effective approaches for building laboratory facilities in the chemical and biochemical sciences. It contains both basic and laboratory-specific information addressed to the user communityâ€"the scientists and administrators who contract with design and construction experts. The book will also be important to the design and construction communitiesâ€"the architects, laboratory designers, and engineers who will design the facility and the construction personnel who will build itâ€"to help them communicate with the scientific community for whom they build laboratory facilities.
Download or read book Laboratories for the 21st Century written by and published by . This book was released on 2003 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study, done for the joint DOE-EPA Laboratories for the 21st Century program ("Labs 21"), used a simplified computer model to analyze the effects of energy efficiency measures in laboratory buildings in four different climates: those of Minneapolis, Denver, Seattle, and Atlanta. Results show that using variable-air-volume fume hoods can reduce lab energy costs as much as$1 per square foot in any climate. Energy-recovery systems such as enthalpy wheels also save varying amounts of energy and money in all climates. Savings for other measures, such as heat pipes and evaporated cooling, are also included.
Download or read book Guidelines for Laboratory Design written by Louis J. DiBerardinis and published by Wiley-Interscience. This book was released on 1987 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: New York : John Wiley and Sons, [1987].
Download or read book The Potential for Air Flow Reduction in Fume Hoods at Hanford written by Walter I. Enderlin and published by . This book was released on 1988 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Minimum Acceptable Face Velocities of Laboratory Fume Hoods and Guidelines for Their Classification written by Oak Ridge National Laboratory. Health Division and published by . This book was released on 1978 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Guidelines for Laboratory Design written by Louis J. DiBerardinis and published by John Wiley & Sons. This book was released on 2013-04-08 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proven and tested guidelines for designing ideal labs for scientific investigations Now in its Fourth Edition, Guidelines for Laboratory Design continues to enable readers to design labs that make it possible to conduct scientific investigations in a safe and healthy environment. The book brings together all the professionals who are critical to a successful lab design, discussing the roles of architects, engineers, health and safety professionals, and laboratory researchers. It provides the design team with the information needed to ask the right questions and then determine the best design, while complying with current regulations and best practices. Guidelines for Laboratory Design features concise, straightforward advice organized in an easy-to-use format that facilitates the design of safe, efficient laboratories. Divided into five sections, the book records some of the most important discoveries and achievements in: Part IA, Common Elements of Laboratory Design, sets forth technical specifications that apply to most laboratory buildings and modules Part IB, Common Elements of Renovations, offers general design principles for the renovation and modernization of existing labs Part II, Design Guidelines for a Number of Commonly Used Laboratories, explains specifications, best practices, and guidelines for nineteen types of laboratories, with three new chapters covering nanotechnology, engineering, and autopsy labs Part III, Laboratory Support Services, addresses design issues for imaging facilities, support shops, hazardous waste facilities, and laboratory storerooms Part IV, HVAC Systems, explains how to heat, cool, and ventilate labs with an eye towards energy conservation Part V, Administrative Procedures, deals with bidding procedures, final acceptance inspections, and sustainability The final part of the book features five appendices filled with commonly needed data and reference materials. This Fourth Edition is indispensable for all laboratory design teams, whether constructing a new laboratory or renovating an old facility to meet new objectives.
