Browsing Waterloo Research by Subject "Fenestration"
Now showing items 21-40 of 42
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Glazing System U-Value Measurement Using a Guarded Heater Plate Apparatus
(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 ... -
Heat Transfer Analysis of a Between-Panes Venetian Blind Using Effective Longwave Radiative Properties
(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
(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 ... -
Improving Load Calculations for Fenestration with Shading Devices
(American Society of Heating, Refrigerating and Air-Conditioning Engineers, 2009-10)Activities and findings arising from ASHRAE Research Project 1311-RP are summarized. This project included three main goals, (a) development of models for pleated drapes, venetian blinds, roller blinds and insect screens, ... -
Indoor-Side Convection Coefficients for Complex Fenestration Systems with Roller Blinds
(American Society of Heating, Refrigerating and Air-Conditioning Engineers, 2017-01)In order to characterize the resistor network that describes convective heat transfer on the indoor side of a complex fenestration system, three convection coefficients are needed. Although methods to obtain convection ... -
Methods for Calculating the Effective Longwave Radiative Properties of a Venetian Blind Layer
(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 ... -
Methods for Calculating the Effective Solar-Optical Properties of a Venetian Blind Layer
(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 ... -
Mitigation of Peak Cooling Demand through the Combination of Residential Zoned Cooling and Window Shading: A Building Simulation Case Study
(International Building Performance Simulation Association, 2014-05)The present study expands on previous building simulation work con-cerning the potential benefits of residential zoned cooling systems during peak summer days. Such zoned systems provide an opportunity for peak reduction ... -
Modeling Fenestration With Shading Devices In Building Energy Simulation: A Practical Approach
(International Building Performance Simulation Association, 2009-07)The use of operable shading devices impacts building loads significantly. The need exists for an explicit treatment of window shading devices in the design of energy efficient buildings through simulation. A general framework ... -
Natural Convection in Sealed Glazing Units: A Review
(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 ... -
Numerical Analysis of Convective Heat Transfer in Fenestration with Between-the-Glass Louvered Shades
(Elsevier, 2009-10)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 at different ... -
Off-Normal Solar-Optical Performance of Pleated Drapery: Simulation versus Measurement
(American Society of Heating, Refrigerating and Air-Conditioning Engineers, 2016-01)In recent years, significant advances have been made in modeling fenestration with shading attachments. Most shading devices have great potential for reducing both peak building cooling load and annual energy consumption ... -
Overview of a Project to Determine the Surface Temperatures of Insulated Glazing Units: Thermographic Measurement and Two-Dimensional Simulation
(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. ... -
Sensitivity of the Solar Heat Gain Coefficient of Complex Fenestration Systems to the Indoor Convection Coefficient
(International Building Performance Simulation Association, 2016)Accurate estimation of the solar gain of a fenestration system is important in analyzing the energy performance of buildings. Recently, models were developed for complex fenestration systems – glazing systems with attachments ... -
A Simplified Method For Calculating The Effective Solar Optical Properties Of a Drapery
(2007-06)The use of draperies to control solar gain through windows is common in residential and commercial buildings and their potential for reduction of building peak load and annual energy consumption is recognized to be large. ... -
A Simplified Numerical Method for Assessing the Condensation Resistance of Windows
(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 ... -
Simplified Solar Optical Calculations For Windows With Venetian Blinds
(2006)Solar gain through a window represents the most variable heat gain imposed on an indoor space. It is also likely to represent the largest heat gain of the indoor space. Shading devices like venetian blinds roller blinds ... -
Simulation And Measurement Of Windows With Metal Films Used In Conjunction With Teflon Inner Glazings
(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 ... -
Solar Absorption by Each Element in a Glazing/Shading Layer Array
(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 ... -
Solar Gain through Windows with Shading Devices: Simulation Versus Measurement
(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 ...