scholarly journals Thermal Environment Dynamic Simulation of Double Skin Façade with Middle Shading Device in Summer

2016 ◽  
Vol 146 ◽  
pp. 251-256
Author(s):  
Hua Yang ◽  
Ying Zhou ◽  
Feng-yun Jin ◽  
Xing Zhan
Keyword(s):  
Dynamic Simulation ◽  
Thermal Environment ◽  
Double Skin ◽  
Shading Device

Numerical Simulation of Indoor Thermal Environment of a Double-Skin Facade Office with Different Shutter Angles

2014 ◽  
Vol 694 ◽  
pp. 256-259
Author(s):  
Xin Zhan ◽  
Hua Yang ◽  
Feng Yun Jin
Keyword(s):  
Heat Transfer ◽  
Thermal Environment ◽  
Ventilation Rate ◽  
Air Distribution ◽  
Indoor Thermal Environment ◽  
Double Skin ◽  
Computational Fluid Dynamics Cfd ◽  
Heat Transfer Simulation ◽  
Shading Devices ◽  
Rng Turbulence Model

Airflow and heat transfer simulation was conducted for a double-skin façade (DSF) system equipped with shading devices in the cavity, using computational fluid dynamics (CFD) with RNG turbulence model and PISO algorithm, for five conditions of slat angles (θ=0°, 30°, 45°, 60°, 90°). The present study indicates that the presence of shading devices influences the temperatures, the ventilation rate and the air distribution in the DSF system. Besides, the different angles will make different influences.

scholarly journals Solar Heat Gain Reduction of Ventilated Double Skin Windows without a Shading Device

2017 ◽  
Vol 10 (2) ◽  
pp. 64 ◽  
Author(s):  
Bokyoung Koo ◽  
Keonho Lee ◽  
Youngsub An ◽  
Kyudong Lee
Keyword(s):  
Heat Gain ◽  
Solar Heat ◽  
Double Skin ◽  
Gain Reduction ◽  
Solar Heat Gain ◽  
Shading Device

Dynamic Simulation of Thermal Environment of Solar Greenhouse Using State-Space Method

2014 ◽  
Vol 525 ◽  
pp. 531-535
Author(s):  
Jian Jun Du ◽  
Xin Yu Guo ◽  
Jian Wei Wu ◽  
Bao Zhu Yang
Keyword(s):  
State Space ◽  
Dynamic Simulation ◽  
Thermal Performance ◽  
Thermal Environment ◽  
State Space Method ◽  
Ambient Conditions ◽  
Indoor Temperature ◽  
Lumped Model ◽  
Solar Greenhouse ◽  
Space Method

A dynamic simulation method of thermal environment was presented to evaluate the thermal performance of solar greenhouse. Solar greenhouse was firstly simplified into several components according to characteristics of its structure and materials, and then each component was divided into several temperature elements. For each element, heat balance equation was respectively built and integrated into a lumped model which was used to describe the thermal system of solar greenhouse. Consequently, a dynamic simulation based on state-space method was developed to calculate indoor temperature variations under the ambient conditions and structures of solar greenhouse. Experimental results show the presented method can simulate the long-term changes of indoor temperature, and are beneficial to evaluate and predict the thermal performance of solar greenhouses.

Shading devices applied to sun control in occupied spaces in summer conditions

2021 ◽  
pp. 127-139
Author(s):  
Eusébio Conceição ◽  
João Gomes ◽  
Maria Manuela Lúcio ◽  
Hazim Awbi
Keyword(s):  
Thermal Comfort ◽  
Dynamic Simulation ◽  
Ventilation System ◽  
Simulation Software ◽  
Comfort Level ◽  
Or Groups ◽  
Shading Devices ◽  
Heat Exchanges ◽  
Shading Device ◽  
Made In

This work presents a study of a numerical building dynamic simulation in the development of a horizontal shading device passive solution applied in a university canteen. The used building dynamic simulation software, that simulates simultaneously a building or groups of buildings with complex topologies, in transient conditions, considers the solar radiation, the HVAC system, glass radiative proprieties, radiative heat exchanges, thermal solutions, thermal comfort of occupants, indoor air quality, among others properties. The development of efficient external horizontal shading devices is made by a numerical model that uses the sun's trajectory and its position in relation to the windows where it falls. The canteen is constituted by three levels and is divided in 37 spaces. In the numerical simulation, 100 transparent surfaces and 773 opaque surfaces are considered. Special attention is given in the students’ main canteen, professors’ main canteen, specialized canteen and university bar. The simulation is made, in summer conditions, considered the selected spaces without and with horizontal shading devices placed above their windows. In the simulation, the occupancy and the implemented ventilation system are considered. Regarding to the obtained results the use of horizontal shading devices can reduce the air temperature range and improve the thermal comfort level that the occupants are subjected in some of the analyzed spaces.

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