Tree-configuration and species effects on the indoor and outdoor thermal condition and energy performance of courtyard buildings

Urban Climate ◽  
2021 ◽  
Vol 37 ◽  
pp. 100861
Author(s):  
Amiraslan Darvish ◽  
Golsa Eghbali ◽  
Seyed Rahman Eghbali
Keyword(s):  
Thermal Condition ◽  
Energy Performance ◽  
Species Effects ◽  
Indoor And Outdoor

Natural Materials for Thermal Insulation and Passive Cooling Application

2015 ◽  
Vol 666 ◽  
pp. 1-16 ◽  
Author(s):  
Anna Laura Pisello ◽  
Federica Rosso
Keyword(s):  
Physical Properties ◽  
Thermal Insulation ◽  
Critical Analysis ◽  
Numerical Data ◽  
Energy Performance ◽  
International Standards ◽  
Passive Cooling ◽  
Natural Materials ◽  
Outdoor Spaces ◽  
Indoor And Outdoor

In this chapter a critical analysis about natural materials to enhance energy performance and thermal comfort in indoor and outdoor spaces is dealt with. In particular, thermal insulation and passive cooling application in buildings are analyzed. The physical properties permitting to achieve these benefits are presented, as well as the method and the international standards to measure them. Benefits deriving from these materials’ employment as insulation layers or buildings envelope in general of, or in the case of urban paving, are described and then the single materials are illustrated.Experimental and numerical data, as reported in the bibliography, support the dissertation with examples from the most recent research contributions.

scholarly journals Carbon Neutral Urban Block in Athens - 2050

2021 ◽  
Vol 2042 (1) ◽  
pp. 012048
Author(s):  
Eleni-Marina Maragkaki ◽  
Kartikeya Rajput
Keyword(s):  
Heat Waves ◽  
Environmental Design ◽  
Building Design ◽  
Energy Performance ◽  
Environmental Benefits ◽  
Carbon Neutrality ◽  
Outdoor Comfort ◽  
Zero Carbon ◽  
Carbon Neutral ◽  
Indoor And Outdoor

Abstract Athens’ extensive urbanisation, lack of green areas and the extreme heat caused by increasingly frequent heat waves indicate the need for actions improving indoor and outdoor comfort, which is closely related to the energy consumption of the buildings. This work’s aim is to create a carbon neutral block in Athens on the 2050 horizon. The optimization of the block’s form based on principles of environmental design and climatic analysis was performed to enhance its environmental benefits. Simulations on the energy performance of the block and calculations on the ability to cover the energy loads by renewables were conducted. Finally, to meet the zero-carbon neutrality, a connection with the neighbouring blocks was established. The results demonstrate the benefits of a bioclimatic, carbon neutral building design in Athens and provide a practical prototype, which can be adapted in other projects, thereby enabling the shift to a more efficient and environmentally friendly built environment.

scholarly journals Thinking Ecology for Architecture: Exploration of Cool Pocket

2018 ◽  
Vol 67 ◽  
pp. 04041 ◽  
Author(s):  
Rini Suryantini ◽  
M. M. Y. Harahap ◽  
Yandi Andri Yatmo ◽  
Nandy Putra
Keyword(s):  
Thermal Condition ◽  
Cfd Simulation ◽  
Building Energy ◽  
Energy Performance ◽  
Architectural Education ◽  
Design Strategies ◽  
Building Energy Performance ◽  
Human Thermal Comfort ◽  
Ecological Understanding ◽  
Land Water

This paper discusses the importance of understanding the ecology as part of architectural education. Rather than focusing on the heat phenomenon as frequently researched, this paper explores the opposite ideas by identifying the concept of cool pocket and designing it as a mean for heat mitigation in a tropical built environment. Recent researches show that providing a microclimate that responds human thermal comfort can contribute to the building energy performance and at the same time promote activities in outdoor space. The relation and interaction among various microclimate factors with the land, water body, arrangement of vegetations, building’s geometry and configurations, create different scenarios of the thermal condition, including possible cool pocket. Using air temperature and wind as indicators, possibilities of cool pocket will be explored and investigated through CFD Simulation. The result shows the importance of ecological understanding as part of designing cool pocket in a tropical context in a learning process and scenario-based simulation in developing design strategies.

The Effects of the Soils Thermal Field onto the Energy Performance of Buildings

2014 ◽  
Vol 899 ◽  
pp. 58-61 ◽  
Author(s):  
Petr Kacálek ◽  
Tomas Petricek ◽  
Radim Smolka
Keyword(s):  
Thermal Field ◽  
Specific Area ◽  
Energy Performance ◽  
Outdoor Environment ◽  
Temperature Fields ◽  
Climatic Data ◽  
Internal Environment ◽  
Energy Performance Of Buildings ◽  
Structural Solution ◽  
Indoor And Outdoor

The paper deals with the distribution temperature fields of soils at a real building object. These temperature fields are based on continuous (2 years worth of) measurements of temperature in certain depths of soils at a building structure. When designing buildings the climatic data are applied for a specific area only. Albeit in case of soils temperature the data are rather general, all locations do have the same values. One factor that significantly affects the soil temperature, are the thermal parameters inside and outside of buildings. The soils temperature is affected considerably by the structural solution used on a building, particularly in areas where thermal insulation is in contact with structures and the ground too. Whereas in case of soils there are no coherent outputs of temperatures with dependence to the characteristics of external and internal environment as much as to the structural solution of a building, the main aim of the paper is to make an impulse for the creation of comprehensive temperature data packs for soils for predetermined depths, structures and parameters of indoor and outdoor environment.

Modelling the effect of tree-shading on summer indoor and outdoor thermal condition of two similar buildings in a Nigerian university

2016 ◽  
Vol 130 ◽  
pp. 721-732 ◽  
Author(s):  
Tobi Eniolu Morakinyo ◽  
K.W.D. Kalani. C. Dahanayake ◽  
Olumuyiwa Bayode Adegun ◽  
Ahmed Adedoyin Balogun
Keyword(s):  
Thermal Condition ◽  
Nigerian University ◽  
Indoor And Outdoor

scholarly journals A Practical Multi-Sensor Cooling Demand Estimation Approach Based on Visual, Indoor and Outdoor Information Sensing

Sensors ◽  
2018 ◽  
Vol 18 (11) ◽  
pp. 3591 ◽  
Author(s):  
Junqi Wang ◽  
Norman Tse ◽  
Tin Poon ◽  
John Chan
Keyword(s):  
Low Cost ◽  
Estimation Error ◽  
Real Life ◽  
Demand Estimation ◽  
Energy Performance ◽  
Operating Efficiency ◽  
Computationally Efficient ◽  
Existing Building ◽  
Building Management ◽  
Indoor And Outdoor

The operating efficiency of heating, ventilation and air conditioning (HVAC) system is critical for building energy performance. Demand-based control is an efficient HVAC operating strategy, which can provide an appropriate level of HVAC services based on the recognition of actual cooling “demand.” The cooling demand primarily relies on the accurate detection of occupancy. The current researches of demand-based HVAC control tend to detect the occupant count using cameras or other sensors, which often impose high computation and costs with limited real-life applications. Instead of detecting the occupant count, this paper proposes to detect the occupancy density. The occupancy density (estimated by image foreground moving pixels) together with the indoor and outdoor information (acquired from existing sensors) are used as inputs to an artificial neural network model for cooling demand estimation. Experiments have been implemented in a university design studio. Results show that, by adding the occupancy density, the cooling demand estimation error is greatly reduced by 67.4% and the R value is improved from 0.75 to 0.96. The proposed approach also features low-cost, computationally efficient, privacy-friendly and easily implementable. It shows good application potentials and can be readily incorporated into existing building management systems for improving energy efficiency.

Impact of roof shading on building energy performance in warm & humid climatic places of India

2020 ◽  
pp. 50-64
Author(s):  
Kuladeep Kumar Sadevi ◽  
Avlokita Agrawal
Keyword(s):  
Energy Consumption ◽  
Energy Conservation ◽  
Energy Performance ◽  
General Assumption ◽  
Climatic Conditions ◽  
Building Envelope ◽  
Passive Cooling ◽  
Base Case ◽  
U Value ◽  
The Impact

With the rise in awareness of energy efficient buildings and adoption of mandatory energy conservation codes across the globe, significant change is being observed in the way the buildings are designed. With the launch of Energy Conservation Building Code (ECBC) in India, climate responsive designs and passive cooling techniques are being explored increasingly in building designs. Of all the building envelope components, roof surface has been identified as the most significant with respect to the heat gain due to the incident solar radiation on buildings, especially in tropical climatic conditions. Since ECBC specifies stringent U-Values for roof assembly, use of insulating materials is becoming popular. Along with insulation, the shading of the roof is also observed to be an important strategy for improving thermal performance of the building, especially in Warm and humid climatic conditions. This study intends to assess the impact of roof shading on building’s energy performance in comparison to that of exposed roof with insulation. A typical office building with specific geometry and schedules has been identified as base case model for this study. This building is simulated using energy modelling software ‘Design Builder’ with base case parameters as prescribed in ECBC. Further, the same building has been simulated parametrically adjusting the amount of roof insulation and roof shading simultaneously. The overall energy consumption and the envelope performance of the top floor are extracted for analysis. The results indicate that the roof shading is an effective passive cooling strategy for both naturally ventilated and air conditioned buildings in Warm and humid climates of India. It is also observed that a fully shaded roof outperforms the insulated roof as per ECBC prescription. Provision of shading over roof reduces the annual energy consumption of building in case of both insulated and uninsulated roofs. However, the impact is higher for uninsulated roofs (U-Value of 3.933 W/m2K), being 4.18% as compared to 0.59% for insulated roofs (U-Value of 0.33 W/m2K).While the general assumption is that roof insulation helps in reducing the energy consumption in tropical buildings, it is observed to be the other way when insulation is provided with roof shading. It is due to restricted heat loss during night.

Sign in / Sign up

Export Citation Format

Share Document