The Experts below are selected from a list of 300 Experts worldwide ranked by ideXlab platform
Robert W Besant - One of the best experts on this subject based on the ideXlab platform.
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an examination of operating strategies for energy efficient operation of attached Sunspaces in cold climates
Energy Conversion and Management, 1992Co-Authors: Greg Schoenau, Allan J Lumbis, Robert W BesantAbstract:Abstract A previously developed and validated simulation model was used in this study to compare the thermal performance of four Sunspaces. The Sunspaces are fairly representative of North American construction and range from an air-tight energy efficient construction with a mainly south-glazing orientation to a structure of standard construction and with mostly non-south facing glazing. They represent actual structures located in Saskatoon, Canada and were used to validate a previously developed simulation model by comparison against extensive hourly monitored performance. Simulations were conducted to predict annual performance of the Sunspaces at four representative Canadian climatic locations; Vancouver, Saskatoon, Toronto, and Frederiction. Without auxiliary energy, the sunspace temperatures were outside the comfort range most of the time, particularly in winter. The effect on annual sunspace heating and cooling energy requirements of a number of operating strategies were examined. These included the use of blinds, exhaust fans, utilization of excess energy for house space heating and closing off the sunspace during the coldest 3 months. The combination of all these measures was found to result in energy self-sufficient operation but only for those Sunspaces where the majority of the glazing was south facing.
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development and verification of a simulation model for predicting the thermal behavior of attached Sunspaces
Energy Conversion and Management, 1991Co-Authors: Greg Schoenau, Allan J Lumbis, Robert W BesantAbstract:Abstract An analytical model is developed in this paper which can be used to simulate and predict the thermal performance of direct gain attached Sunspaces. The model was validated by comparing summer/winter predictions against monitored data from four Sunspaces operating in a cold climate. These Sunspaces were of relatively low mass, wood frame construction with glazings located at a variety of orientations. This model could also be used for high thermal mass walls provided a three layer representation was accurate.
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thermal performance of four Sunspaces in a cold climate
Energy and Buildings, 1990Co-Authors: Greg Schoenau, Allan J Lumbis, Robert W BesantAbstract:Abstract The thermal performance of four suspaces operating in a cold climate is examined in this study. The Sunspaces are fairly representative of North American construction and range from an airtight energy-efficient construction, with most of the glazing facing south, to lower quality construction with non-south glazing orientation. The Sunspaces are located in Saskatoon, Canada. Extensive hourly monitored performance was used to develop and validate an analytical model. Simulations were conducted to predict annual performance of the Sunspaces. Without auxiliary energy, the sunspace temperature was outside the comfort range most of the time, particularly in winter. The effect of annual sunspace heating and cooling energy requirements of a number of operating strategies were examined. These included the use of blinds, exhaust fans, utilization of excess energy for house space heating, and closing off the sunspace during the coldest three months. The combination of all these measures was found to result in energy self-sufficient operation but only for those Sunspaces where the majority of the glazing was south-facing.
Greg Schoenau - One of the best experts on this subject based on the ideXlab platform.
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an examination of operating strategies for energy efficient operation of attached Sunspaces in cold climates
Energy Conversion and Management, 1992Co-Authors: Greg Schoenau, Allan J Lumbis, Robert W BesantAbstract:Abstract A previously developed and validated simulation model was used in this study to compare the thermal performance of four Sunspaces. The Sunspaces are fairly representative of North American construction and range from an air-tight energy efficient construction with a mainly south-glazing orientation to a structure of standard construction and with mostly non-south facing glazing. They represent actual structures located in Saskatoon, Canada and were used to validate a previously developed simulation model by comparison against extensive hourly monitored performance. Simulations were conducted to predict annual performance of the Sunspaces at four representative Canadian climatic locations; Vancouver, Saskatoon, Toronto, and Frederiction. Without auxiliary energy, the sunspace temperatures were outside the comfort range most of the time, particularly in winter. The effect on annual sunspace heating and cooling energy requirements of a number of operating strategies were examined. These included the use of blinds, exhaust fans, utilization of excess energy for house space heating and closing off the sunspace during the coldest 3 months. The combination of all these measures was found to result in energy self-sufficient operation but only for those Sunspaces where the majority of the glazing was south facing.
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development and verification of a simulation model for predicting the thermal behavior of attached Sunspaces
Energy Conversion and Management, 1991Co-Authors: Greg Schoenau, Allan J Lumbis, Robert W BesantAbstract:Abstract An analytical model is developed in this paper which can be used to simulate and predict the thermal performance of direct gain attached Sunspaces. The model was validated by comparing summer/winter predictions against monitored data from four Sunspaces operating in a cold climate. These Sunspaces were of relatively low mass, wood frame construction with glazings located at a variety of orientations. This model could also be used for high thermal mass walls provided a three layer representation was accurate.
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thermal performance of four Sunspaces in a cold climate
Energy and Buildings, 1990Co-Authors: Greg Schoenau, Allan J Lumbis, Robert W BesantAbstract:Abstract The thermal performance of four suspaces operating in a cold climate is examined in this study. The Sunspaces are fairly representative of North American construction and range from an airtight energy-efficient construction, with most of the glazing facing south, to lower quality construction with non-south glazing orientation. The Sunspaces are located in Saskatoon, Canada. Extensive hourly monitored performance was used to develop and validate an analytical model. Simulations were conducted to predict annual performance of the Sunspaces. Without auxiliary energy, the sunspace temperature was outside the comfort range most of the time, particularly in winter. The effect of annual sunspace heating and cooling energy requirements of a number of operating strategies were examined. These included the use of blinds, exhaust fans, utilization of excess energy for house space heating, and closing off the sunspace during the coldest three months. The combination of all these measures was found to result in energy self-sufficient operation but only for those Sunspaces where the majority of the glazing was south-facing.
Ana Sanchezostiz - One of the best experts on this subject based on the ideXlab platform.
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energy efficiency and thermal behaviour of attached Sunspaces in the residential architecture in spain summer conditions
Energy and Buildings, 2015Co-Authors: Aurora Mongebarrio, Ana SanchezostizAbstract:Abstract This research shows the study and analysis of Sunspaces behaviour as passive elements of architecture during the summer, taking into account that they are fundamentally passive solar heating elements for winter. This study is carried out through monitoring and energy simulation of six case studies, applying it to summer 2011–2012 which was extremely hot for the climate zone in which it is located. These results are useful for the study of residential buildings with the forecasts of climate change for Pamplona, especially for an architectural element as sensitive to overheating as is an attached sunspace. The research concludes that attached Sunspaces also have a good thermal behavior in summer, even in extreme conditions, as long as they are designed and used properly, and therefore no active cooling system is necessary. This research also explores the energy efficiency and optimized design of the Sunspaces for different climate zones in Spain, selected attending mainly to the severity of summer although with different winter conditions.
Allan J Lumbis - One of the best experts on this subject based on the ideXlab platform.
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an examination of operating strategies for energy efficient operation of attached Sunspaces in cold climates
Energy Conversion and Management, 1992Co-Authors: Greg Schoenau, Allan J Lumbis, Robert W BesantAbstract:Abstract A previously developed and validated simulation model was used in this study to compare the thermal performance of four Sunspaces. The Sunspaces are fairly representative of North American construction and range from an air-tight energy efficient construction with a mainly south-glazing orientation to a structure of standard construction and with mostly non-south facing glazing. They represent actual structures located in Saskatoon, Canada and were used to validate a previously developed simulation model by comparison against extensive hourly monitored performance. Simulations were conducted to predict annual performance of the Sunspaces at four representative Canadian climatic locations; Vancouver, Saskatoon, Toronto, and Frederiction. Without auxiliary energy, the sunspace temperatures were outside the comfort range most of the time, particularly in winter. The effect on annual sunspace heating and cooling energy requirements of a number of operating strategies were examined. These included the use of blinds, exhaust fans, utilization of excess energy for house space heating and closing off the sunspace during the coldest 3 months. The combination of all these measures was found to result in energy self-sufficient operation but only for those Sunspaces where the majority of the glazing was south facing.
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development and verification of a simulation model for predicting the thermal behavior of attached Sunspaces
Energy Conversion and Management, 1991Co-Authors: Greg Schoenau, Allan J Lumbis, Robert W BesantAbstract:Abstract An analytical model is developed in this paper which can be used to simulate and predict the thermal performance of direct gain attached Sunspaces. The model was validated by comparing summer/winter predictions against monitored data from four Sunspaces operating in a cold climate. These Sunspaces were of relatively low mass, wood frame construction with glazings located at a variety of orientations. This model could also be used for high thermal mass walls provided a three layer representation was accurate.
-
thermal performance of four Sunspaces in a cold climate
Energy and Buildings, 1990Co-Authors: Greg Schoenau, Allan J Lumbis, Robert W BesantAbstract:Abstract The thermal performance of four suspaces operating in a cold climate is examined in this study. The Sunspaces are fairly representative of North American construction and range from an airtight energy-efficient construction, with most of the glazing facing south, to lower quality construction with non-south glazing orientation. The Sunspaces are located in Saskatoon, Canada. Extensive hourly monitored performance was used to develop and validate an analytical model. Simulations were conducted to predict annual performance of the Sunspaces. Without auxiliary energy, the sunspace temperature was outside the comfort range most of the time, particularly in winter. The effect of annual sunspace heating and cooling energy requirements of a number of operating strategies were examined. These included the use of blinds, exhaust fans, utilization of excess energy for house space heating, and closing off the sunspace during the coldest three months. The combination of all these measures was found to result in energy self-sufficient operation but only for those Sunspaces where the majority of the glazing was south-facing.
Alexandra R Rempel - One of the best experts on this subject based on the ideXlab platform.
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interpretation of passive solar field data with energyplus models un conventional wisdom from four Sunspaces in eugene oregon
Building and Environment, 2013Co-Authors: Alexandra R Rempel, Katharine V Cashman, Ken N Gates, Catherine J Page, Barbara ShawAbstract:Abstract Passive solar design in the Pacific Northwest relies greatly on traditions established elsewhere, resisting adoption of distinct regional practices despite growing evidence of their value. To promote progress toward climate-responsive design in the cloudy, rainy Cascadian corridor, and to gain insight into often-troubled passive solar performance in the region, energy transfer mechanisms underlying the measured performance of four Oregon Sunspaces were investigated using EnergyPlus building models. Air, mass, globe, and soil temperatures, as well as relative humidity and incident solar radiation, were recorded at 10-min intervals in each sunspace from January through June, 2011; models incorporated geometric, material, occupancy, equipment, tree shading, and soil parameters relevant to energy gain and loss. Models were then validated by comparison with air and mass temperature data: all predicted 84–93% of measurement variability. Output showed that over half of all energy entering each sunspace originated as diffuse solar radiation, and that 60–70% of the total was transmitted through shallow-pitched roof glazing, in a pattern contrary to established belief. Similarly, much stored energy was lost through central rather than perimeter floor mass. Orientation exerted a minor effect on performance compared to other factors, particularly tree shading, while solar gain exceeded predictions of long-accepted methods by factors of two to three. Together, these results show that substantial revision of deep-rooted ideas and expectations will be needed to achieve high-performance passive solar heating in the Pacific Northwest.
