Now showing items 1-20 of 9931

    • Solar Gain through Windows with Shading Devices: Simulation Versus Measurement 

      Wright, John L.; Kotey, Nathan Amon; Barnaby, Charles S.; Collins, Michael R. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 2009)
      Shading devices offer a cost saving strategy in dynamically controlling solar gain through windows. As such, there is an ongoing effort to accurately quantify the thermal performance of shading devices. In the present ...
    • Determining Off-Normal Solar Optical Properties of Drapery Fabrics 

      Kotey, Nathan Amon; Collins, Michael R.; Wright, John L. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 2009)
      The determination of off-normal solar optical properties of drapery fabrics is particularly useful in modelling the effective solar optical properties of pleated drapery. Special sample holders were designed and fabricated ...
    • A Detailed Model to Determine the Effective Solar Optical Properties of Draperies 

      Kotey, Nathan Amon; Wright, John L.; Collins, Michael R. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 2009)
      Drapes have the potential to reduce peak cooling load and annual energy consumption because they can be used to control solar gain. Thus, the need to model a drapes in a glazing system analysis is important. A detailed ...
    • Methods for Calculating the Effective Solar-Optical Properties of a Venetian Blind Layer 

      Yahoda, Darryl S.; Wright, John L. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 2005)
      Window solar gain can strongly influence building energy consumption, peak loads, and comfort. Shading devices are routinely used to control solar gain. The use of venetian blinds is particularly common. There is a strong ...
    • Heat Transfer Analysis of a Between-Panes Venetian Blind Using Effective Longwave Radiative Properties 

      Wright, John L.; Yahoda, Darryl S. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 2004)
      Center-glass thermal analysis programs based on one-dimensional models have proved to be exceptionally useful. Recently efforts have been made to extend the analysis to include venetian blinds. It is convenient to model ...
    • Methods for Calculating the Effective Longwave Radiative Properties of a Venetian Blind Layer 

      Yahoda, Darryl S.; Wright, John L. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 2004)
      Window solar gain can strongly influence building energy consumption, peak loads, and comfort. Shading devices are routinely used to control solar gain. The use of venetian blinds is particularly common. There is a strong ...
    • A Comparison of Calculated and Measured Indoor-Side Window Temperature Profiles 

      Wright, John L.; McGowan, Alexander G. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 2003)
      Computer-generated surface temperature profiles are presented for the indoor side, vertical centerline of two windows and a calibration transfer standard (CTS). These specific configurations were chosen because they match ...
    • A Simplified Analysis of Radiant Heat Loss Through Projecting Fenestration Products 

      Wright, John L. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 2001)
      Current window analysis algorithms can deal with many features, including low-e coatings and substitute fill gases. These methods were developed for products with planar glazings. Results can be generated for projecting ...
    • A Simplified Numerical Method for Assessing the Condensation Resistance of Windows 

      Wright, John L. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 1998)
      Methods have been established for calculating heat transfer in windows whereby a one-dimensional analysis is used for the center-glass area and a two-dimensional numerical calculation is used to model conduction in the ...
    • Glazing System U-Value Measurement Using a Guarded Heater Plate Apparatus 

      Wright, John L.; Sullivan, Harry F. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 1988)
      Precise heat transfer measurements have been carried out during the last 20 years using a guarded heater plate apparatus. This apparatus has been adapted and used over the last several years to perform U-value measurements ...
    • Overview of a Project to Determine the Surface Temperatures of Insulated Glazing Units: Thermographic Measurement and Two-Dimensional Simulation 

      Wright, John L.; Sullivan, Harry F.; Fraser, Roydon A. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 1996)
      A collaborative research project was undertaken to generate surface temperature profiles for the indoor side of seven different double and triple-glazed insulated glazing units exposed to the ASHRAE winter design condition. ...
    • Natural Convection in Sealed Glazing Units: A Review 

      Wright, John L.; Sullivan, Harry F. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 1989)
      In cold climates the augmented edge-glass heat transfer at the bottom of a glazing system creates a special problem. This is where condensed water and/or frost most readily occur. Two mechanisms determining the rate of ...
    • A study of insulated glazing unit surface temperature profiles using two-dimensional computer simulation 

      Wright, John L.; Sullivan, Harry F.; De Abreu, Pedro Felipe; Fraser, Roydon A. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 1996)
      This paper describes one part of a collaborative research project, including both measurement and simulation studies, aimed at determining the surface temperature of a set of insulated glazing units (IGUs). In this study ...
    • Calculating Center-Glass Performance Indices of Windows 

      Wright, John L. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 2015)
      Building envelope performance is strongly influenced by solar gain and heat transfer through windows. The majority of this energy gain or loss passes through the center-glass area of the glazing system. Various methods ...
    • Computer Simulation of Window Condensation Potential 

      McGowan, Alexander G.; Wright, John L. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 1998-12)
      Condensation on windows creates obscured view, can cause building damage, and may lead to mold growth and poor indoor air quality. The Canadian Standards Association (CSA) has developed new procedures to evaluate window ...
    • Calculating the Solar Heat Gain of Window Frames 

      Wright, John L.; McGowan, Alexander G. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 1999)
      It is not practical to measure the solar heat gain of a window frame. It is more practical to do so by calculation. Typically, the frame solar heat gain is a small component of the total or is small in absolute terms so ...
    • Thermal Resistance of a Window with an Enclosed Venetian Blind: A Simplified Model 

      Wright, John L.; Collins, Michael R.; Huang, Ned Y. T. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 2008)
      Solar gain has a strong influence on building energy consumption and peak cooling load. Venetian blinds are routinely used to control solar gain. Software based on 1-D models is available to accurately predict the thermal ...
    • Solar Absorption by Each Element in a Glazing/Shading Layer Array 

      Wright, John L.; Kotey, Nathan Amon (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 2006)
      Window solar gain can strongly influence building energy consumption and peak cooling load. Shading devices such as venetian blinds, roller blinds, and drapes are routinely used to control solar gain. There is a strong ...
    • Thermal resistance measurement of glazing system edge-seals and seal materials using a guarded heater plate apparatus 

      Wright, John L.; Sullivan, Harry F. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 1989)
      In cold climates the increased edge-glass heat transfer at the perimeter of a sealed glazing unit creates a special problem. This is where condensed water and frost most readily occur. One mechanism contributing to edge-glass ...
    • A two-dimensional numerical model for natural convection in a vertical, rectangular window cavity 

      Wright, John L.; Sullivan, Harry F. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 1994-12-31)
      It is common for sealed glazing units to exhibit condensation problems when operated in cold climates. Condensation often forms along the perimeter of the exposed surface of the indoor glazing because of the thermal short ...

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