building ventilation Articles

  • An application of ventilation efficiency concepts to the analysis of building density effects on urban flow and pollutant concentration

    This paper is devoted to the study of flow and pollutant dispersion within different urban configurations by means of wind tunnel experiments and Computational Fluid Dynamics (CFD) simulations. The influence of the building packing density was evaluated in terms of ventilation efficiency. We found that air entering the array through the lateral sides and that leaving through the street roofs ...


    By Inderscience Publishers

  • An Introduction to Ventilation Butterfly Valve

    Overview: Ventilation butterfly valve is used in chemical industry, building materials, power plants, glass and other industries in the ventilation, environmental engineering dust or hot air gas pipeline. It acts as a gas medium to regulate and control the flow or shut-off in the pipes. ...


    By Adamant Valves

  • Ventilation Research on Australian Residential Construction

    This paper applies established and new testing methods to discover the ventilation performance of various residential building envelope constructions in Australia. Under the definition of 'ventilation performance' we imply the building envelope leakage (or infiltration) of the living space air change rates, the volumetric flow rates and the pathways of air flow between subfloor, living and roof ...

  • Climate Adapted Buildings

    Acknowledging our power-hungry practices and demanding a proper understanding of the fundamental laws of physics within the context of a building. The single-greatest environmental impact of buildings today is their ongoing energy usage, which accounts for almost half of global energy usage. Heating, ventilation, and air conditioning (HVAC) requirements of conventional buildings represent more ...


    By Actual Media

  • Sick-building syndrome and building-related illness

    Significant health problems linked to very poor indoor air qualityIndoor Air Quality (IAQ) deals with the content of interior air that could affect health and comfort of building occupants. The IAQ may be compromised by microbial contaminants (mold, bacteria), chemicals (such as carbon monoxide, radon), allergens, or any mass or energy stressor are more prevalent than anyone could have predicted. ...

  • Confused about Carbon Monoxide and Ventilation?

    How does it affect you, the Building Owner and HVAC Contractor? There has been a lot of press regarding Carbon Monoxide Detectors (CO) and Smoke Detectors in the news over the past year. In most cases, this is justified and certainly the attention and awareness is important. As a contractor though, how does this affect you and the HVAC market place? It’s important to understand the ...


    By Arjay Engineering Ltd.

  • Ventilation Sanitary Butterfly Valve Introduction

    The ventilation sanitary butterfly valve is used in chemical industry, building materials, power plants, glass and other industries in ventilation, environmental engineering dust or hot air gas pipeline. It acts as a means of gas to regulate and control ...


    By Adamant Valves

  • Confused about Carbon Monoxide and Ventilation?

    There has been a lot of press regarding Carbon Monoxide Detectors (CO) and Smoke Detectors in the news over the past year. In most cases, this is justified and certainly the attention and awareness is important. As a contractor though, how does this affect you and the HVAC market place? It’s important to understand the difference between private residential monitoring for personal safety ...


    By Arjay Engineering Ltd.

  • In the aeration tank, the turbo provides ventilation

    Robust in operation: at Emsbüren, the AERZEN turbo saves quite a lot of energy At Emsbüren wastewater treatment plant, Wasserverband Lingener Land invested in new blower technology for the aeration tank. In comparison with the old assembly, the turbo blower made by AERZEN saves between 100 and 200 kilowatt hours every day. Modernisation of wastewater treatment plants in order to ...

  • Effects of Headroom on the Performance of the Displacement Ventilation System

    IntroductionIn recent years an increasing amount of health evidence from building occupants has confirmed the existence of sick building syndrome (SBS). This is where occupants within a building begin to report feelings of nausea, headaches and general feelings of illness. Additional symptoms of this health problem include eye, nose and throat irritation, coughing and fatigue. The fact that most ...


    By SAGE Publications

  • Conditional constructions: environmental discourses on natural ventilation

    The critical potential of the concept of sustainability may depend on its ability to provide a space for a meaningful dialogue about the possible appropriate relationships between technology, nature and society. However, the contemporary interpretation of sustainable building reflects a process in which a global, consensual and technocratic vision of environmental change has tended to dominate ...


    By Inderscience Publishers

  • Gas Monitoring for Ventilation Control and Energy Management

    The growing demand for underground and enclosed parking and maintenance garages (resulting from limitations on land availability) has increased the awareness and need for proper ventilation and control systems. In addition, increased health and safety programs have only added to the concerns of toxic and combustible gases in confined or enclosed spaces. Historically, ventilation and make-up air ...


    By Arjay Engineering Ltd.

  • Building Science Issue (Attic)

    Client: Upscale Custom Home Builder  Location: Florida Gulf Coast  Completion: Sept thru Oct 2007  Corrections Cost: ~$25,000 Key Project Team: Timothy Toburen Indoor Environmental Technologies (IET) was retained by the builder to determine the cause of excessive sweating ...

  • Numerical simulations of street canyon ventilation and pollutant dispersion

    The relationship among air exchange rate (ACH), pollutant exchange rate (PCH) and friction factor ( f ) is proposed in this study to evaluate the performance of ventilation and pollution removal of hypothetical urban areas. Urban areas were simplified to arrays of idealised, repeated two-dimensional (2D) street canyons of different building-height-to-street-width (aspect) ratios (ARs) and ...


    By Inderscience Publishers

  • The impact of human motion on TVOCs distribution for three ventilation modes

    The study objectives of this paper are to investigate the influence of human motion and three different ventilation modes on indoor environment, Total Volatile Organic Compounds (TVOCs) dose and Contribution Ratio of Pollution (CRP) source index. According to the simulation results, human motion acts as the disturbance, has a noticeable effect on indoor environment including velocity, temperature ...


    By Inderscience Publishers

  • Building a lower carbon construction industry

    Dominic Burbidge, Senior Client Manager Carbon Trust Advisory takes a cradle-to-grave view of the construction sector value chain Carbon reduction is a complex challenge for all organisations, not least those in the construction industry. Taking a cradle-to-grave view of the construction sector value chain means considering all aspects of the design, construction, use and demolition of ...


    By Carbon Trust

  • `Green Buildings` can create problems with IAQ

    The recent trend towards energy conservation measures have in some cases led to airtight building construction that can often create problems with Indoor Air Quality (IAQ). Some 'green buildings' (also known as ‘green construction’ and ‘sustainable buildings’) have ignored the issue of IAQ in pursuit of energy saving measures. Ventilation systems are set to minimize the ...


    By PPM Technology

  • A case must be made for changing how buildings operate

    So Cloud connectivity for sensors is essential. It is becoming common that large monitors are placed in the common area to show building operations, energy consumption, calculated Carbon Footprint, recycling productivity, and waste reduction and where appropriate LEED points. At the AHR Expo we are demonstrating an Internet of Things, an IAQ sensor system that will validate our systems ...


    By ProMark Associates, Inc.

  • How best to solve the IAQ problem in large buildings

    Recently we had the opportunity to present our point of view on how best to solve the IAQ problem in large buildings. We knew it was a long shot that we might gain traction but here was an opportunity to do our best. Thanks to one of our team members who scoured their web site, he found the perfect statement that could validate what we were about to present and put us on their side. What we ...


    By ProMark Associates, Inc.

  • Forensic engineering applied to the analysis of a gas explosion in a residential building

    Present paper deals with the identification of the cause of an explosion in a hollow space positioned below a residential building as the result of welding operations. On field investigation clearly demonstrated that the explosion was due to the ignition of a flammable atmosphere in the basement of the building. Along the trial two hypotheses were brought to the judge: (a) explosion of an ...


    By Inderscience Publishers

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you