Now showing items 1-20 of 31

    • Assessing Convective Heat Transfer Coefficients Associated with Indoor Shading Attachments Using a New Technique Based on Computational Fluid Dynamics 

      Wright, John L.; Foroushani, Seyed Sepehr Mohaddes; Naylor, David; Collins, Michael R. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 2015-01)
      ASHRAE research project RP-1311 concluded with the creation of simulation models, the ASHWAT models, for glazing systems with shading attachments. Such assemblies are known as Complex Fenestration Systems (CFS). ASHWAT ...
    • Asymmetric Graetz Problem: The Analytical Solution Revisited 

      Foroushani, Seyed Sepehr Mohaddes; Wright, John L.; Naylor, David (American Institute of Aeronautics and Astronautics, 2017-01-01)
      Forced-convective heat transfer from the walls of an asymmetrically heated channel to the fluid passing through in a laminar, hydrodynamically developed flow is known as the asymmetric Graetz problem. Several analytical ...
    • Calculating Center-Glass Performance Indices of Glazing Systems with Shading Devices 

      Wright, John L. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 2008)
      Building energy consumption and loads are strongly influ-enced by solar gain and heat transfer through the centre-glass area of windows. Methods have been devised to calculate the corresponding energy performance indices ...
    • 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 ...
    • 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 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 ...
    • 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 ...
    • Convective Heat Transfer In Hydrodynamically-Developed Laminar Flow In Asymmetrically-Heated Annuli: A Three-Temperature Problem 

      Wright, John L.; Naylor, David; Foroushani, Seyed Sepehr Mohaddes (2016-07)
      Heat transfer in hydrodynamically-developed flow in asymmetrically-heated channels and annuli has been studied extensively. This study is an extension of earlier work where heat transfer in an asymmetrically-heated ...
    • Design and Evaluation of Hybrid Energy Storage Systems for Electric Powertrains 

      Mikkelsen, Karl (University of Waterloo, 2010-09-30)
      At the time of this writing, increasing pressure for fuel efficient passenger vehicles has prompted automotive manufactures to invest in the research and development of electrically propelled vehicles. This includes vehicles ...
    • Design and simulation of a lithium-ion battery at large C-rates and varying boundary conditions through heat flux distributions 

      Panchal, Satyam; Dincer, Ibrahim; Agelin-Chaab, Martin; Fraser, Roydon; Fowler, Michael (Elsevier, 2018-02-01)
      In this paper, the heat flux distributions on a prismatic lithium-ion battery at 1C, 2C, 3C and 4C discharge rates under various operating temperatures and boundary conditions (BCs) of 22 °C for air cooling and 5 °C, 15 ...
    • 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 ...
    • Determination of convective heat transfer for fenestration with between-the-glass louvered shades 

      Collins, Michael R.; Tasnim, Syeda Humaira; Wright, John L. (Elsevier, 2008-06-01)
      In previous work, a two-dimensional steady laminar natural convection model of a window cavity with between-panes louvers (i.e., slats) was developed by approximating the system as a vertical cavity with isothermal walls ...
    • 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 ...
    • Determining Off-Normal Solar Optical Properties of Insect Screens 

      Wright, John L.; Collins, Michael R.; Kotey, Nathan Amon (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 2009)
      Shading attachments may have a strong influence on solar gain. The determination of off-normal solar optical properties of individual layers of glazing/shading systems is required in order to estimate this solar gain, which ...
    • Determining Off-Normal Solar Optical Properties of Roller Blinds 

      Kotey, Nathan Amon; Wright, John L.; Collins, Michael R. (American Society of Heating, Refrigerating and Air-Conditioning Engineers, 2009)
      Solar gain through fenestration constitutes a significant portion of peak cooling load and annual energy consumption in buildings. As such, any reduction in solar gain translates into savings associated with the cost of ...
    • 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 ...
    • Efficient Simulation Of Complex Fenestration Systems In Heat Balance Room Models 

      Wright, John L.; Barnaby, Charles S.; Niles, Philip; Rogalsky, Christine Jane (International Building Performance Simulation Association, 2011-11)
      The solar, longwave, and convective interactions between a window, its shading attachments and its surroundings constitute a complicated coupled heat balance problem that can entail significant computational intensity to ...
    • 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 ...
    • Heat Transfer Analysis Of Windows With Venetian Blinds: A Comparative Study 

      Wright, John L.; Lomanowski, Bartosz (2007-06)
      The potential to reduce building load and annual energy consumption is widely recognized in the use of shading devices to control solar gain. Consequently, the ability to include and model shading layers in complex glazing ...
    • Hot Forming of Boron Steels with Tailored Mechanical Properties: Experiments and Numerical Simulations 

      George, Ryan (University of Waterloo, 2011-05-13)
      Hot forming of boron steels is becoming increasingly popular in the automotive industry due to the demands for weight reduction and increased safety requirements for new vehicles. Hot formed components offer a significant ...

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