Now showing items 1-20 of 789

    • A Novel Furnace Design Utilizing a Low Temperature Plastic Condensing Heat Exchanger 

      Wright, John L.; Sullivan, Harry F. (1982-03)
      The initial phase of a research and development program for the Consumers' Gas Co. and the Federal Department of Energy, Mines and Resources to design a condensing heat exchanger/gas fired residential air furnace has been ...
    • Effective U-values and Shading Coefficients of Preheat/Supply Air Glazing Systems 

      Wright, John L. (1986-06)
      Research is documented which makes use of a computer program called VISION, This computer program was developed specifically to provide a detailed analysis of heat transfer occurring in glazing systems. VISION was modified ...
    • Simulation And Measurement Of Windows With Metal Films Used In Conjunction With Teflon Inner Glazings 

      Wright, John L.; Sullivan, Harry F. (1987-09)
      Previous work has shown that highly infrared transparent plastic films are well suited for use as inner glazings when used in conjunction with a low emissivity coating. Thermal resistance measurements of a set of glazing ...
    • Simulation and Measurement of Windows with Low Emissivity Coatings Used in Conjunction with Teflon Inner Glazings 

      Wright, John L.; Sullivan, Harry F. (1987-09)
      Theoretical work has illustrated that highly infrared, transparent plastic films are well suited for use as intermediate glazings when used in conjunction with a low emissivity coating. Prototype glazing systems that ...
    • 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 ...
    • 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 ...
    • 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 Pane Spacing In Glazing Systems 

      Wright, John L.; Baker, J. A.; Sullivan, Harry F. (Solar Energy Society of Canada, 1989-06)
      The selection of optimum pane spacing for glazing systems has been a topic of ongoing debate in the window manufacturing industry. Arguments are often based on speculation, intuition and results from tests not specifically ...
    • Thermal Resistance Measurement Of Glazing System Edge-seals 

      Wright, John L. (1989-11)
      The existing design of glazing system edge-seals creates increased edge-glass heat transfer at the perimeter of sealed glazing units. This thermal short-circuit caused by edge-seal conduction results in added mechanical ...
    • 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 ...
    • Calculating Window Solar Heat Gain 

      Wright, John L. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 1995-07)
      Window design has been revolutionized-largely by the introduction of low emissivity (low-e) coatings and substitute fill gases. The large number of design options necessitates the use of computer simulation for development ...
    • A two-dimensional numerical model for glazing system thermal analysis 

      Wright, John L.; Sullivan, Harry F. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 1995-08)
      A simple two-dimensional (2-D) numerical control volume formulation is presented that can be used to model heat transfer through a vertical insulated glazing unit. This model accounts for natural convection of the fill gas ...
    • Summary and comparison of methods to calculate solar heat gain 

      Wright, John L. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 1995-08)
      Methods used to calculate the solar gain of windows (including center-glass, edge-glass, and frame) are examined and compared Particular attention is devoted to the public-domain computer programs VISION3 and WINDOW 4.1. ...
    • 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 ...
    • A Correlation to Quantify Convective Heat Transfer Between Vertical Window Glazings 

      Wright, John L. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 1996)
      Several correlations have been used in recent years for the purpose of calculating convective, centre-glass heat transfer rates across gas-filled interpane window cavities. These correlations are examined and their background ...
    • 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. ...
    • Calculating Center-Glass Performance Indices of Windows 

      Wright, John L. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 1998)
      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 ...
    • 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 ...
    • 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 ...

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