Research on application and thermal performance of raw earth material in building envelope

Energy improvement techniques for buildings are among the modern studies that concentrate on new techniques and methods of saving energy and improving the thermal performance in buildings. This research aims to prepare microencapsulated-PCMs (micro-PCMs) by using local materials and studied the influence of using micro-PCMs on thermal performance improvement and PCMs leakage problems improvement. The micro-PCMs of paraffin wax were prepared as the core PCMs materials while the melamine-formaldehyde polymer as the shell. The micro-PCMs were characterized through scanning electron-microscopy (SEM), energy-dispersive X-ray (EDX) spectrometry, Fourier-transform infrared spectroscopy, and differential scanning calorimetry. Analysis results showed the prepared micro-PCMs present a regular spherical shape and confirm that the formation composite of the shell effectively encapsulated the cores. Furthermore, the absence of chemical interaction between the MF and the PW components. The micro-PCM have potential for architectural applications in the building-envelope to store thermal energy, provide indoor-temperature at the comfortable range, and reduce the consumption energy in buildings.

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THE IMPACT OF THERMAL PERFORMANCE ON THE ROOF SURFACE TO ENERGY EFFICIENT OF HIGH-RISE BUILDING IN THE TROPICAL REGION

Arsitektura ◽

10.20961/arst.v16i1.20748 ◽

2018 ◽

Vol 16 (1) ◽

pp. 129

Author(s):

Sri Yuliani ◽

Wiwik Setyaningsih

Keyword(s):

Thermal Performance ◽

Energy Efficient ◽

Heat Load ◽

Building Envelope ◽

Tropical Region ◽

High Rise ◽

High Rise Building ◽

Real Model ◽

Urban Heat ◽

The Impact

The surface temperature of the building material may release a heat load in the micro-environment. The largest building envelope receives the heat load of solar radiation is the roof. The strategic roof position at the top of the building has the opportunity to radiate heat received into the environment. Heat emissions lead to rising temperatures, so it is necessary to lower the temperature in micro-environment. When the heat of the building is not lowered will lead to an increase in the urban heat island (UHI). The objective of the study was to find the relationship between the thermal performance of the roof of the building and the energy efficiency in the high-rise building, in order to establish efficient thermal comfort. The research method uses experimental way in real model which is in Surakarta City, as humid tropical climate area. The result of the study is a comparison of the heat performance of three roofing materials which would later recommend the criteria of energy efficient roof for high buildings.

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The National Program Plan for the Thermal Performance of Building Envelope Systems and Materials

Thermal Insulation, Materials, and Systems for Energy Conservation in the '80s ◽

10.1520/stp29431s ◽

2009 ◽

pp. 19-19-16

Author(s):

PR Achenbach ◽

EC Freeman

Keyword(s):

Thermal Performance ◽

Building Envelope ◽

National Program ◽

Program Plan

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Thermal Performance Comparison between Single and Double Storey Terrace Houses in Melaka, Malaysia

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.835.416 ◽

2016 ◽

Vol 835 ◽

pp. 416-422

Author(s):

Fahanim Abdul Rashid ◽

Asrul Mahjuddin Ressang Aminuddin ◽

Norafida Ab. Ghaffar

Keyword(s):

Relative Humidity ◽

Thermal Comfort ◽

Case Studies ◽

Thermal Performance ◽

High Energy ◽

Performance Comparison ◽

Building Envelope ◽

The Difference ◽

Economic Developments ◽

Housing Typology

Over the past decade many studies were conducted to investigate the thermal performance of terraced houses in Malaysia. It was found that this housing typology failed to address the need for thermal comfort and alternatives to the narrow frontage with deep plan have been proposed with simulated good thermal performance. Although this is good progress for new generation of terraced houses, millions of units of terraced houses are still in use and new units with the outdated existing plans continued to get built due to consistently very high demand due to progressive urbanisation and rapid economic developments. Therefore, it is imperative that the thermal comfort issue for existing terraced houses is dealt with and through this paper a comparison between single and double storey terraced houses is made through analysis of indoor environmental monitoring (ambient temperature, relative humidity and air velocity) of two (2) selected case studies in Merlimau, Melaka. Contrary to popular belief, it is found that there is no statistical difference between both sets of indoor temperature and relative humidity between the case studies. This finding is indicative of the consistent and stable temporal temperature highs and lows in a 24 hour cycle despite the difference in indoor volume and distance between the ground floor and the roof cavity. Much of the reason is due to the materiality of the terraced houses construction and unsealed and uninsulated building envelope. Therefore, further research into improving the thermal performance of existing terraced houses of any typology have to be conducted to allow thermal comfort and to reduce reliance on high energy consuming air-conditioning.

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Experimental and numerical thermal performance assessment of a multi-layer building envelope component made of biocomposite materials

Energy and Buildings ◽

10.1016/j.enbuild.2020.109846 ◽

2020 ◽

Vol 214 ◽

pp. 109846 ◽

Cited By ~ 2

Author(s):

Beñat Arregi ◽

Roberto Garay-Martinez ◽

Julen Astudillo ◽

Miriam García ◽

Juan Carlos Ramos

Keyword(s):

Performance Assessment ◽

Thermal Performance ◽

Building Envelope

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Parametric study of the thermal performance of a typical administrative building in the six thermal zones according to the RTCM, using TRNSYS

MATEC Web of Conferences ◽

10.1051/matecconf/201814902097 ◽

2018 ◽

Vol 149 ◽

pp. 02097

Author(s):

LAMRANI Abdelghafour ◽

SAFAR Said ◽

ROUGUI Mohamed

Keyword(s):

Thermal Performance ◽

Parametric Study ◽

Building Envelope

In this work, we present a parametric study of a new administrative building, located in El-Ksar El Kebir region (Morocco). In order to have a building that complies with the RTCM in a technically and economically sound manner, we have carried out a number of interventions to insulate the components of the building, namely external walls, exposed roofs and openings. In this perspective, we have modelled the building envelope as a multi-zone building in TRNSYS and we have adopted an occupation scenario for this type of building. After determining the optimal insulation solutions, we simulated the administrative building in the five other thermal zones, to determine its feasibility in the latter.

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Evaluation on energy and thermal performance for office building envelope in different climate zones of China

Energy and Buildings ◽

10.1016/j.enbuild.2014.10.057 ◽

2015 ◽

Vol 86 ◽

pp. 626-639 ◽

Cited By ~ 40

Author(s):

Jinghua Yu ◽

Liwei Tian ◽

Xinhua Xu ◽

Jinbo Wang

Keyword(s):

Thermal Performance ◽

Building Envelope ◽

Office Building ◽

Climate Zones

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Envelope Thermal Performance Analysis Based on Building Information Model (BIM) Cloud Platform—Proposed Green Mark Collaboration Environment

Energies ◽

10.3390/en13030586 ◽

2020 ◽

Vol 13 (3) ◽

pp. 586 ◽

Cited By ~ 2

Author(s):

Ziwen Liu ◽

Qian Wang ◽

Vincent J.L. Gan ◽

Luke Peh

Keyword(s):

Thermal Performance ◽

Green Building ◽

Building Envelope ◽

Information Modeling ◽

Future Research ◽

Building Information Model ◽

Architectural Engineering ◽

Collaboration Environment ◽

Building Information

Building Information Modeling (BIM) and sustainable buildings are two future cornerstones of the Architectural, Engineering and Construction (AEC) industry. In Singapore’s context, the Green Mark (GM) scoring system is prevalently used to assess the sustainability index of green buildings. BIM provides the semantic and geometry information of buildings, which is proliferated as the technological and process backbone for the green building assessment. This research, through vast literature reviews, identified that the current procedure of achieving a Green Mark score is tedious and cumbersome, which hampers productivity, especially in the calculation of building envelope thermal performance. Furthermore, the project stakeholders work in silos, in a non-collaborative, manual and 2D-based environment for generating relevant documentation to achieve the requisite green mark score. To this end, a cloud-based BIM platform was developed, with the aim of encouraging project stakeholders to collaboratively generate the project’s green mark score digitally in accordance with the regulatory requirements. Through this research, the authors have validated the Envelope Thermal Transfer Value (ETTV) calculation, which is one of the prerequisite criteria to achieve a Green Mark score, through a case study using the developed cloud-based BIM platform. The results indicated that using the proposed platform enhances the productivity and accuracy as far as ETTV calculation is concerned. This study provides a basis for future research in implementing the proposed platform for other criteria under the Green Mark Scheme.

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Mechanical and Thermal Performance Characterisation of Compressed Earth Blocks

Energies ◽

10.3390/en13112978 ◽

2020 ◽

Vol 13 (11) ◽

pp. 2978 ◽

Cited By ~ 1

Author(s):

Elisabete R. Teixeira ◽

Gilberto Machado ◽

Adilson de P. Junior ◽

Christiane Guarnier ◽

Jorge Fernandes ◽

...

Keyword(s):

Heat Transfer ◽

Compressive Strength ◽

Heat Transfer Coefficient ◽

Transfer Coefficient ◽

Water Absorption ◽

Thermal Performance ◽

Pulse Velocity ◽

Building Envelope ◽

Compressed Earth Blocks ◽

Earth Blocks

The present research is focused on an experimental investigation to evaluate the mechanical, durability, and thermal performance of compressed earth blocks (CEBs) produced in Portugal. CEBs were analysed in terms of electrical resistivity, ultrasonic pulse velocity, compressive strength, total water absorption, water absorption by capillarity, accelerated erosion test, and thermal transmittance evaluated in a guarded hotbox setup apparatus. Overall, the results showed that compressed earth blocks presented good mechanical and durability properties. Still, they had some issues in terms of porosity due to the particle size distribution of soil used for their production. The compressive strength value obtained was 9 MPa, which is considerably higher than the minimum requirements for compressed earth blocks. Moreover, they presented a heat transfer coefficient of 2.66 W/(m2·K). This heat transfer coefficient means that this type of masonry unit cannot be used in the building envelope without an additional thermal insulation layer but shows that they are suitable to be used in partition walls. Although CEBs have promising characteristics when compared to conventional bricks, results also showed that their proprieties could even be improved if optimisation of the soil mixture is implemented.

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