Straw Based Materials for Building Retrofitting and Energy Efficiency

2016 ◽  
Vol 678 ◽  
pp. 50-63 ◽  
Author(s):  
Stefania Liuzzi ◽  
Simona Rigante ◽  
Francesco Ruggiero ◽  
Pietro Stefanizzi
Keyword(s):  
Energy Efficiency ◽  
Thermal Properties ◽  
Wheat Straw ◽  
Thermal Insulation ◽  
Water Glass ◽  
Building Materials ◽  
Hygric Properties

This work aimed to measure the hygrothermal properties of some different straw-based mix that could be used as building materials (panels or bricks). Straw is used to improve the hygrothermal performances of the final products. Several mix were produced adding different percentages of straw. Two types of fibers were used: wheat straw and bean straw. The results indicated that increasing the percentages of straw greater effects on the change of thermal properties can be appreciated. Furthermore the results also reveal that the specimen produced by water glass and straw, without binder, has the highest values of hygric properties and thermal insulation.

Study on Building Materials with Exterior Insulation System Problems and Solutions

2013 ◽  
Vol 788 ◽  
pp. 656-659
Author(s):  
Xiao Jie Zhang ◽  
Yuan Ping Liu
Keyword(s):  
Energy Efficiency ◽  
Thermal Insulation ◽  
Building Materials ◽  
Building Energy ◽  
Building Energy Efficiency ◽  
Insulation System ◽  
External Wall ◽  
Construction Methods ◽  
Problems And Solutions ◽  
Domestic Use

Building palisade structure is the most important part of the wall, so the external wall thermal insulation technology has become an important part of building energy efficiency. After the author found the domestic use of insulation materials in a variety of forms, different use method makes the external wall thermal insulation system has a problem. The analysis of the cause of the problem at the same time, this paper discusses how to use of selected materials and improving the construction methods to avoid the happening of the accident.

scholarly journals Materials and technologies to achieve better energy efficiency of buildings

2021 ◽  
Vol 1203 (3) ◽  
pp. 032134
Author(s):  
Henryk B. Łoziczonek
Keyword(s):  
Energy Efficiency ◽  
Thermal Properties ◽  
Greenhouse Gases ◽  
Thermal Insulation ◽  
Frame Structures ◽  
Single Family ◽  
Wooden Frame ◽  
Innovative Solutions ◽  
Family Housing ◽  
Emission Of Greenhouse Gases

Abstract The article will discuss the aspects of the possibilities of improving the energy efficiency of buildings. In particular, the author will analyze innovative technologies in the field of improving the thermal insulation of external partitions and improving the efficiency of underfloor heating. The author will present the results of research on the thermal properties of metal and wooden frame structures, as well as innovative veneer floor panels. Frame structures are increasingly used in single-family housing, and veneer floor panels are used in underfloor heating. Innovative solutions of building partitions are to improve the energy efficiency of newly constructed buildings, and thus reduce the emission of greenhouse gases into the atmosphere.

scholarly journals A review on modern heat-insulating materials for improving the energy efficiency of buildings and life-support utilities

2021 ◽  
Vol 288 ◽  
pp. 01099
Author(s):  
Denis Karpov ◽  
Olga Dyudina ◽  
Mikhail Pavlov
Keyword(s):  
Energy Efficiency ◽  
Thermal Insulation ◽  
Construction Projects ◽  
Building Materials ◽  
Life Support ◽  
Support Systems ◽  
Life Support Systems ◽  
Insulating Materials ◽  
Industrial Buildings ◽  
Application Fields

The main heat engineering characteristics of modern traditional and innovative heat-insulating materials, their advantages, and application fields are considered. Particular attention is paid to liquidceramic heat-insulating materials - thermal paints, which are now actively used for thermal insulation of facades of capital and completed construction projects, engineering and technical life support systems, installations, and separate elements. Interest in the study of this group of building materials is explained by the widespread use of heaters to improve the energy efficiency of civil and industrial buildings, as well as engineering life support systems for various purposes.

scholarly journals Testing a Gypsum Composite Based on Raw Gypsum with a Direct Admixture of Paraffin and Polymer to Improve Thermal Properties

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3241
Author(s):  
Krzysztof Powała ◽  
Andrzej Obraniak ◽  
Dariusz Heim
Keyword(s):  
Thermal Conductivity ◽  
Heat Capacity ◽  
Thermal Properties ◽  
Phase Change ◽  
Large Scale ◽  
Building Materials ◽  
Residential Buildings ◽  
Energy Performance ◽  
Polymer Content ◽  
Volumetric Heat Capacity

The implemented new legal regulations regarding thermal comfort, the energy performance of residential buildings, and proecological requirements require the design of new building materials, the use of which will improve the thermal efficiency of newly built and renovated buildings. Therefore, many companies producing building materials strive to improve the properties of their products by reducing the weight of the materials, increasing their mechanical properties, and improving their insulating properties. Currently, there are solutions in phase-change materials (PCM) production technology, such as microencapsulation, but its application on a large scale is extremely costly. This paper presents a solution to the abovementioned problem through the creation and testing of a composite, i.e., a new mixture of gypsum, paraffin, and polymer, which can be used in the production of plasterboard. The presented solution uses a material (PCM) which improves the thermal properties of the composite by taking advantage of the phase-change phenomenon. The study analyzes the influence of polymer content in the total mass of a composite in relation to its thermal conductivity, volumetric heat capacity, and diffusivity. Based on the results contained in this article, the best solution appears to be a mixture with 0.1% polymer content. It is definitely visible in the tests which use drying, hardening time, and paraffin absorption. It differs slightly from the best result in the thermal conductivity test, while it is comparable in terms of volumetric heat capacity and differs slightly from the best result in the thermal diffusivity test.

scholarly journals Influence of Lightweight Aggregate Concrete Materials on Building Energy Performance

Buildings ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 94
Author(s):  
Tara L. Cavalline ◽  
Jorge Gallegos ◽  
Reid W. Castrodale ◽  
Charles Freeman ◽  
Jerry Liner ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Building Materials ◽  
Energy Savings ◽  
Lightweight Concrete ◽  
Lightweight Aggregate ◽  
Building Energy ◽  
Energy Performance ◽  
Energy Simulation ◽  
Building Energy Simulation ◽  
Building Energy Performance

Due to their porous nature, lightweight aggregates have been shown to exhibit thermal properties that are advantageous when used in building materials such as lightweight concrete, grout, mortar, and concrete masonry units. Limited data exist on the thermal properties of materials that incorporate lightweight aggregate where the pore system has not been altered, and very few studies have been performed to quantify the building energy performance of structures constructed using lightweight building materials in commonly utilized structural and building envelope components. In this study, several lightweight concrete and masonry building materials were tested to determine the thermal properties of the bulk materials, providing more accurate inputs to building energy simulation than have previously been used. These properties were used in EnergyPlus building energy simulation models for several types of commercial structures for which materials containing lightweight aggregates are an alternative commonly considered for economic and aesthetic reasons. In a simple model, use of sand lightweight concrete resulted in prediction of 15–17% heating energy savings and 10% cooling energy savings, while use of all lightweight concrete resulted in prediction of approximately 35–40% heating energy savings and 30% cooling energy savings. In more complex EnergyPlus reference models, results indicated superior thermal performance of lightweight aggregate building materials in 48 of 50 building energy simulations. Predicted energy savings for the five models ranged from 0.2% to 6.4%.

scholarly journals Energy Efficiency and Thermal Properties of the Composite Material Clay-straw

2017 ◽  
Vol 141 ◽  
pp. 160-164 ◽  
Author(s):  
K. El Azhary ◽  
Y. Chihab ◽  
M. Mansour ◽  
N. Laaroussi ◽  
M. Garoum
Keyword(s):  
Energy Efficiency ◽  
Composite Material ◽  
Thermal Properties

Riqualificazione energetica e bioedilizia in Italia: lo stato dell'arte

2012 ◽  
pp. 74-88
Author(s):  
Livio de Santoli
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Energy Consumption ◽  
Fossil Fuels ◽  
Building Materials ◽  
Heat Pumps ◽  
Building Envelope ◽  
International Standards ◽  
Solar Panels ◽  
Water Heaters

Building sustainability, in term of energy efficiency, low-impact building materials, renewable energy, has experienced significant growth during the past years. In response to the growing dependence on fossil fuels and importations, due in part to the increase of energy consumption in the residential sector (in 2009 46,9 Mtep, 3% more than 2008) and the recent European directives (i.e. EU 2009/28/CE) requiring CO2 emissions cut of up to 13% in 2020, there is interest in promoting energy efficiency and renewable energy technologies, which are suitable for residential applications. In this paper we present an overview on actions related to minimization of buildings energy consumption in Italy. Prevalent line of action is to improve the energy performances of building envelope (Dlgs 192/05) using insulated frames, walls and roofs and replacing heat generators with condensing boilers. In addition to national directives, ONRE Report 2011 (National Observatory on building regulations) shows that 831 Municipalities (10% more than 2010) establish mandatory targets for insulation, photovoltaic solar panels, solar water heaters, heat pumps use, correct buildings orientation, saving of water resource and local materials use. In addiction an efficient energy rating of the buildings could promote the spread of energy efficiency measurement and consequently facilitate their implementation. The new energy rating system should meet international standards, regarding environment and energy aspects, and respect territorial needs.

Investigation of Thermal Insulation Materials Based on Easy Renewable Row Materials from Agriculture

2011 ◽  
Vol 335-336 ◽  
pp. 1412-1417 ◽  
Author(s):  
Jiri Zach ◽  
Jitka Peterková ◽  
Vít Petranek ◽  
Jana Kosíková ◽  
Azra Korjenic
Keyword(s):  
Thermal Insulation ◽  
Building Materials ◽  
Raw Materials ◽  
Building Construction ◽  
Materials Development ◽  
Insulation Materials ◽  
Thermal Insulating ◽  
Plastic Materials ◽  
Energy Consuming ◽  
Rock Wool

Production of building materials is mostly energy consuming. In the sphere of insulation materials we mostly see rock wool based materials or foam-plastic materials whose production process is demanding from material aspect and raw materials aspect as well. At present the demand for thermal insulation materials has been growing globally. The thermal insulation materials form integral part of all constructions in civil engineering. The materials mainly fulfill the thermal insulating functions and also the sound-insulating one. The majority of thermal insulation materials are able to fulfill both of the functions simultaneously. The paper describes questions of thermal insulation materials development with good sound properties based on natural fibres that represent a quickly renewable source of raw materials coming from agriculture. The main advantage of the materials are mainly the local availability and simple renewability of the raw materials. In addition an easy recycling of the materials after their service life end in the building construction and last but not least also the connection of human friendly properties of organic materials with advanced product manufacture qualities of modern insulation materials.

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