Energy Monitoring of a Thermally Massive Passive Solar Residence by the PSTAR Approach

1993 ◽  
Vol 115 (3) ◽  
pp. 155-160 ◽  
Author(s):  
Wongee Chun ◽  
Myung Seok Jeon ◽  
Hyung Taek Kim
Keyword(s):  
Thermal Mass ◽  
Living Room ◽  
Primary Concern ◽  
Building Structure ◽  
Energy Monitoring ◽  
Simulation Results ◽  
Passive Solar ◽  
Renormalization Method ◽  
Solar House ◽  
Living Area

This paper reports the application of the PSTAR (Primary and Secondary Terms Analysis and Renormalization) method to a thermally massive passive solar house located in Daejeon, Korea. The house has approximately 156 m2 of living area with three bedrooms and a living room, which embodies many passive solar features for energy conservation. The primary concern of this work was to properly evaluate the thermal behavior of a thermally massive building structure using the PSTAR method. Results show close agreements between the measured and renormalized values reflecting the effects of heavy thermal mass, whereas the simulation results from the audit description of the house deviate somewhat considerably.

Optimization of Building Envelope Thermal Design for Passive Solar House

2013 ◽  
Vol 368-370 ◽  
pp. 1250-1253
Author(s):  
Jia Yin Zhu ◽  
Bin Chen
Keyword(s):  
Energy Demand ◽  
Optimization Design ◽  
Building Envelope ◽  
Thermal Design ◽  
Thermal Mass ◽  
Optimal Thickness ◽  
South Wall ◽  
Insulation Thickness ◽  
Passive Solar ◽  
Solar House

Optimization design of building envelope-integrated collectors plays an important role in reducing energy consumption and improving thermal comfort. Take a passive solar house for an example, optimization design principles for passive solar house were proposed by simulation. Simulation results by changing envelope insulation thickness showed that the optimal thickness was between 30mm and 70mm for south wall, and 70mm~150mm for other façade, respectively. Meanwhile, the optimal thickness for concrete exterior walls was in the range of 200mm~300mm. Simulation of changing heat capacity proportion showed that the daily temperature difference decreased by 14oC to 5.2oC as the proportion increased doubled. However, considering the building initial investment, the arrangement of thermal mass should be determined by the building type and energy demand.

scholarly journals Thermal comfort in winter incorporating solar radiation effects at high altitudes and performance of improved passive solar design—Case of Lhasa

2020 ◽  
Author(s):  
Lingjiang Huang ◽  
Jian Kang
Keyword(s):  
Solar Radiation ◽  
Thermal Comfort ◽  
Energy Saving ◽  
Solar Irradiance ◽  
Indoor Environment ◽  
Thermal Mass ◽  
High Altitudes ◽  
Energy Saving Potential ◽  
Environment Control ◽  
Passive Solar

AbstractThe solar incidence on an indoor environment and its occupants has significant impacts on indoor thermal comfort. It can bring favorable passive solar heating and can result in undesired overheating (even in winter). This problem becomes more critical for high altitudes with high intensity of solar irradiance, while received limited attention. In this study, we explored the specific overheating and rising thermal discomfort in winter in Lhasa as a typical location of a cold climate at high altitudes. First, we evaluated the thermal comfort incorporating solar radiation effect in winter by field measurements. Subsequently, we investigated local occupant adaptive responses (considering the impact of direct solar irradiance). This was followed by a simulation study of assessment of annual based thermal comfort and the effect on energy-saving potential by current solar adjustment. Finally, we discussed winter shading design for high altitudes for both solar shading and passive solar use at high altitudes, and evaluated thermal mass shading with solar louvers in terms of indoor environment control. The results reveal that considerable indoor overheating occurs during the whole winter season instead of summer in Lhasa, with over two-thirds of daytime beyond the comfort range. Further, various adaptive behaviors are adopted by occupants in response to overheating due to the solar radiation. Moreover, it is found that the energy-saving potential might be overestimated by 1.9 times with current window to wall ratio requirements in local design standards and building codes due to the thermal adaption by drawing curtains. The developed thermal mass shading is efficient in achieving an improved indoor thermal environment by reducing overheating time to an average of 62.2% during the winter and a corresponding increase of comfort time.

Zonal air exchange rate of a passive solar house and resultant sensible air heat transfer

2018 ◽  
Vol 28 (7) ◽  
pp. 914-926 ◽  
Author(s):  
Ochuko Kelvin Overen ◽  
Edson Leroy Meyer ◽  
Golden Makaka ◽  
Sosten Ziuku ◽  
Sampson Mamphweli
Keyword(s):  
Heat Transfer ◽  
Exchange Rate ◽  
Air Exchange Rate ◽  
Passive Solar ◽  
Solar House ◽  
Air Exchange
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