exhaust ducting Articles

  • Ducted or Ductless Fume Hoods? Is this the real issue?

    Most laboratories will need some form of fume cabinet at some point. The type of cabinet is usually the starting point of the process, and the choice of either ductless or ducted cabinet is made. With the ever increasing need to save money and to be environmentally responsible there are other considerations that need to be explored before a decision can be reached. ...


    By Camlab Limited

  • On Choosing The Right Hood And Duct Cleaning Machines

    The cleaning requirements in different commercial settings vary according to the kind of work being conducted. For instance, the cleaning needs in an automobile assembling unit will be entirely different from those of a food processing plant. While the car assembly unit will need cleaning machines to eliminate mud, grease, and lots of dust, a food processing plant demands machines ...


    By Daimer Industries Inc.

  • Cost Effective Corrosive Fume Exhaust System

    Background:Independent Sheet Metal, a northern New Jersey firm engaged in the fabrication and installation of sheet metal ductwork for heating, ventilation and air conditioning (HVAC) systems had a customer give them a tough assignment. A large pharmaceutical manufacturer requested a recommendation for a cost-effective corrosive fume exhaust system for their multiple scale organic building ...


    By FAB-TECH Incorporated

  • A new exhaust ventilation system design software

    By industries development, the amount of air contaminants that are released in workplace has grown increasingly. To reduce these contaminants, there are several methods that, one of which is control at source. Industrial ventilation is perhaps the most powerful tool available for environmental professionals to control workplace pollution. Exhaust ventilation can capture contaminants at source, ...


    By University of Tehran

  • Removal of vehicle exhaust fumes at fire stations

    The challenge The fire brigade of Kassel (Germany) was looking for three new vehicle exhaust extraction systems. Systems that would remove exhaust fumes very effectively, protecting the fire fighters from hazardous diesel exhaust fumes. Other fire stations within the Kassel region were already provided with extraction systems. The fire brigade of Kassel choose for a fully ...


    By Plymovent Group BV

  • Application of H-infinity hybrid active controller for acoustic duct noise cancellation

    This paper describes the principle and application of a hybrid robust active noise controller (ANC) for reducing broadband noise in acoustic ducts. The proposed ANC system consists of an adaptive controller with filtered-x least mean square (FXLMS) algorithm and a feedback structure with robust synthesis theory for obtaining robust performance and stabilisation. In an active control structure, ...


    By Inderscience Publishers

  • Total Exhaust Biosafety Cabinet Upgrade at Research Facility Provides Significant Energy Savings

    When Harvard’s Biology Research Infrastructure (BRI) facility opened in 2006, they required four biological safety cabinets to provide primary containment during animal procedures. In the selection process, workspace containment and isolation requirements, operation modes for non-use periods and maintenance, building integration, and the energy burden to the building system were all ...


    By The Baker Company

  • Air Pressure Monitoring for a Chemical Fume Hood

    CAS DataLoggers recently provided the pressure and temperature datalogging solution to a manufacturer using a chemical fume hood to protect workers by containing vapors, dusts, gases, and fumes, and then expelling them as air flowed into the hood from the front (open) side of the cabinet and then out via the ducted hood exhaust system. Designed for 2 operators, the fume hood had a Fiberglas ...


    By CAS DATALOGGERS

  • Vertical Flow Fume Scrubbers are Suitable for Chemical Producers, Metal Finishing, Semiconductor Manufacturing and Other Operations Generating Fumes and Gases.

    Tri-Mer fume hoods are manufactured for process and laboratory use. Tri-Mer fume hoods are ideally suited for corrosive or volatile exhausts. Construction materials include polypropylene, PVC, mild or stainless steel and high-alloy materials. Standard features include a low maintenance design, 110V power operation and minihelic exhaust gauge. Fume hoods can be equipped with activated carbon or ...


    By Tri-Mer Corporation

  • EIS Safety First - Case Study

    EIS was invited by a UK company to provide a fully automated VOC / odour abatement system treating the exhausts from multiple processes and needing multiple safety systems.  The abatement plant would be part of the construction of a new factory based in Scotland, so the timing and installation of the system would be critical to the plant coming on stream at the planned date. The production ...

  • UnderDuct contributes to LEED design at library (FRP)

    Application Spotlight Location: Eastern Avenue Library, Davenport, IA UnderDuct Details: Over 1500-linear feet of UnderDuct from 36" diameter down to 8" diameter Project Details (from Davenport Library Press Release): A successful public and private collaboration raised $8.2-million toward construction of Eastern Avenue Branch ...


    By Monoxivent

  • BTC coatings for trouble-free Boiler Operation

    In April 2014, the CastoLab® Division of Eutectic Canada performed an on-site coating contract for a Steel Mill. The work was performed on a critical section of the Fume Extraction Ducting: a series of water cooled tubes which remove heat from the exhaust fumes exiting the drop box. Conveyed within the ducting is hot ash debris which is corrosive and very abrasive. In this particular job, the ...


    By Castolin Eutectic

  • Exergy accounting

    The exergy concept is introduced by utilizing a general framework on which are based the model equations. An exergy analysis is performed on a case study: a control volume for a power module is created by comprising gas turbine, reduction gearbox, AC generator, exhaustion ducts and heat regenerator. The implementation of the equations is carried out by collecting test data of the equipment data ...

  • Ammonia Scrubbing Semiconductor Manufacturing 101

    Semiconductor chip manufacturing utilizes a variety of inorganic acids and ammonia solutions. Mixing of acid gases and ammonia in a ventilation system can result in a as phase reaction producing very fine particulate that is ifficult and expensive to remove. For this reason a large emiconductor foundry on the west coast decided topre-treat the exhaust from the ammonia sources prior o mixing with ...

  • Control Problems Waste Feeds in Fluid Beds (PDF - File size 71K)

    High concentrations of alkali salts, iron, and phosphorus in sludge can cause operating problems in fluid-bed incinerators. Understand how clinker and scale form, and how to prevent difficulties. A major advantage of a high-temperature fluid bed (HTFB) is its ability to accept unsteady feed. Because a large quantity of heat is stored in the granular bed material, fluctuations in feed rate, ...

  • Thermal oxidizer: Major engineering company

    The Problem A Major Engineering Company approached Epcon for a large Oxidizer System with 25,000 - 35,000 SCFM Afterburner for their Continuous Cord Resin-Impregnating manufacturing plant. The engineering company had no idea about the operating costs and they were primarily concerned with working through a lawyer that was representing this company with the State Agency. This particular ...


    By Epcon Industrial Systems, LP

  • A cost-effective method for controlling compost air emissions

    In October 2007, ECS began conducting trials at California State University Fresno (CSUF) to explore using the new patent pending AC Composter (ACC) covered aerated static pile system to manage dairy manure solids and comply with airquality standards. A two-zone portable pilot system was delivered by ECS and installed at the CSUF research dairy. This research is being conducted under a Phase I ...


    By Engineered Compost Systems

  • New technology for municipal scale compost operations

    There is a new facility located in Ontario, Canada that accepts construction and demolition waste (C&D) and 100,000 TPY of source separated organics (SSO) waste. The owners chose a new non-thermal plasma (NTP) system to control the odor in its 120,000 cubic feet of air per minute (CFM) air emissions. This NTP system is very compact, fits easily on a platform, is configured as a number of ...

  • Case study - Bakery ethanol

    Overview A bread and bun bakery was faced with installing air pollution control equipment to control the volatile organic compounds (VOCs) emitted during their baking process. The local regulatory agency requires bakeries that generate over 25 tons of ethanol per year to reduce emissions by 95% by installing control devices on their ovens. The airstream that needed to be treated included ...

  • Cemex plant Ruedersdorf - Case Study

    CEMEX Deutschland AG is one of the biggest producers of ready-mixed-concrete, cement and minerals. In Germany CEMEX employs a staff of approximately 3,200 people and is part of the International CEMEX Group with a head count of 50,000. After the German re-unification the Company acquired the existing cement plant in Ruedersdorf. Investments to save CEMEX invested ...

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