building ventilation Articles

  • What is Indoor Air Quality and How Can You Improve It?

    For the longest time, air quality was meant to refer to the quality of air circulating outdoors. However, indoor air or the air found inside and around homes and office buildings is just as important to pay attention to. Improving indoor air quality should be a priority for everyone.  What is Indoor Air Quality? Indoor air quality is the quality of air found circulating ...


    By Filter Buy

  • What is Indoor Air Quality?

    Indoor Air Quality (IAQ) refers to the degree of air purity inside buildings that constitute the usual environment in which people carry out activities (offices, homes, schools, shopping and leisure centres, etc.) Because of increasing urbanisation and our contemporary lifestyle, most people spend a large proportion of their time in these closed environments. The high level of atmospheric ...


    By Bioconservacion SA

  • The ‘ins and outs’ of air quality monitoring

    The National Institute for Health and Care Excellence (NICE) recently issued draft guidance on ‘Air pollution - outdoor air quality and health.’ In the following article Jim Mills, Managing Director of Air Monitors Ltd, explains why there will need to be more funding for monitoring if the mitigation measures mentioned in the guidance are to be implemented effectively. Jim also ...


    By Air Monitors Ltd.

  • 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.

  • 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 ...

  • 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.

  • 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

  • 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

  • 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.

  • 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

  • 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

  • Building Experience: Energy Efficient Buildings

    Issue: The development of large commercial, governmental and even residential buildings which take advantage of energy efficient design and incorporate on-site renewable energy sources could have a major impact on achieving and maintaining Kyoto targets on reducing carbon dioxide (CO2) emissions in the future. Although demonstration sites across Europe have been built, the lessons learnt in their ...


  • 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. ...

  • 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

  • What Are Solar Buildings Technologies?

    Solar buildings technologies use the non-polluting power of the sun to help heat, cool, and power our buildings. Because buildings now use one-third of the energy currently consumed in this country, the potential markets for using solar buildings technologies in place of conventional ones is substantial. Whether you're a home owner, architect, builder, business owner, or industry or utility ...

  • 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 ...

  • 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

  • Solar Chimneys in Buildings - The State of the Art

    Improvement of the energy performance of buildings and achievement of indoor comfort conditions can be attained by passive cooling techniques and energy efficient measures. Natural ventilation is one of the simplest and most widely applied cooling strategies, achieved by permitting air to flow through the building. The solar chimney is a construction on the building's envelope that exploits solar ...

  • Significance of design for energy conservation in buildings: building envelope components

    Energy efficient buildings consist of using innovative technologies based on renewable energies and a good thermal insulation. Most strategies applied in design and many of the services offered by lodging establishments require the consumption of substantial quantities of energy, water and non–durable products. In most developing countries, it makes perfect sense to focus on the ...


    By Inderscience Publishers

  • Building green when times are lean

    In an article entitled “Actions Speak Louder than Greenwash” last December we looked at how some unscrupulous property developers in Thailand preferred to market “greenwash” rather than embrace the concept of sustainable building design and construction. Indeed, it seemed as if the property developers were suddenly falling over themselves in their rush to surf the green wave, with project ...

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