Insulating Building Components Made from a Mixture of Waste and Vegetal Materials: Thermal Characterization of Nine New Products

Nowadays, energy efficiency and sustainability are the fulcra of building policies. These policies promote the use of new technologies and materials that can reduce the primary energy involved and the environmental costs of construction, guarantying at the same time a high level of comfort for the building’s occupants. Synergy between previous construction techniques and the use of new materials should be pursued by employing materials with a low environmental impact and optimal thermal insulation properties. Within this framework, new materials derived from the agriculture sector, and waste or recycling products from the industrial/agricultural sectors have been studied. The aim of this paper is to contribute to this field by analysing the insulation properties of new environmentally friendly materials composited from waste or vegetal products for their applications within the construction sector. Measurements of the thermal conductivity of nine different samples are carried out, obtaining promising results suggesting that these products can be used as feasible alternatives to the materials traditionally used for construction and insulation. However, further analyses are certainly recommended, to assess the samples’ structural properties and the influence of pre-treatments on the samples.

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Energy-related conditions and envelope properties for sustainable buildings

Bulletin of the Polish Academy of Sciences Technical Sciences ◽

10.1515/bpasts-2016-0079 ◽

2016 ◽

Vol 64 (4) ◽

pp. 697-707 ◽

Cited By ~ 1

Author(s):

R. Geryło

Keyword(s):

New Technologies ◽

Heat Storage ◽

Primary Energy ◽

Building Envelope ◽

General Description ◽

Assessment Methodology ◽

Zero Energy ◽

Thermal Transmittance ◽

Latent Heat Capacity

AbstractThe assessment methodology for the sustainability of buildings is based on the analysis of environmental, social and economic performance. The main purpose of the paper is the presentation of energy-related conditions and envelope properties as well as methodology aspects. The first part of the paper presents the literature review on sustainability and zero-energy buildings. The second part is devoted to describe different energy indicators for the evaluation of primary energy requirements and energy characteristic. The last section describes the general methodology for characterization of energetic properties of the building envelope and gives examples from literature of the effect of applications in a building’s envelope an aerogel based thermal insulation for higher thermal transmittance and a PCM for higher latent heat capacity with general description of results obtained by other authors. The crucial measure is the use of high thermal performance components for the building’s envelopes combined with the heat storage potential. In the context of sustainability, energy related conditions constitute a new set of indicators for identifying the usefulness and the efficiency of new technologies.

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DESIGN AND VIBRATIONS IN THE ROTARY HAMMER

DYNA INGENIERIA E INDUSTRIA ◽

10.6036/10297 ◽

2021 ◽

Vol DYNA-ACELERADO (0) ◽

pp. [ 5 pp]-[ 5 pp]

Author(s):

BEATRIZ IVORRA ZARAGOZA ◽

SILVIA NUERE MENÉNDEZ-PIDAL ◽

SARA GOMEZ MARTIN ◽

JUAN DAVID CANO MORENO ◽

MIGUEL BERZAL RUBIO

Keyword(s):

Occupational Diseases ◽

Construction Sector ◽

New Materials ◽

Pneumatic Hammer ◽

Vibration Syndrome ◽

A Value ◽

Materials Used ◽

Damping Of Vibrations ◽

Better Than

The vibrations generated by manual machines can cause occupational diseases with both vascular and osteoarticular affectations, also known as hand-arm vibration syndrome. The pneumatic rotary hammer is one of these machines, widely used in the construction sector. In the bibliography consulted, it is found that the transmission of vibrations from the handle to the hand-arm system depends on both the composition of the material and the design of the handle. Although there are already improvements in this damping of vibrations received through the handles, there is a great field for its optimization, redesign and the search for new materials not yet used in the handles of pneumatic hammers. This article presents a methodology for the study of new materials used in the grip, including the analysis of the design, real tests for the characterization of the materials and their simulation by finite elements. The results obtained show that the design is a decisive factor for both vibration damping and weight. The redesigned grip that generates more damping at 33 seconds with a weight of 0.51kg is the "R1" with a value of 0.6346% better than the original grip, "Segeda original", with a weight of 0.55kg and with a damping value of 0.605%. Keywords: industrial design, pneumatic hammer, handle, elastomers, vibrations

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An Adaptive Neural Network model for thermal characterization of building components

Energy Procedia ◽

10.1016/j.egypro.2017.11.150 ◽

2017 ◽

Vol 140 ◽

pp. 374-385 ◽

Cited By ~ 2

Author(s):

R. Baccoli ◽

L. Di Pilla ◽

A. Frattolillo ◽

C.C. Mastino

Keyword(s):

Neural Network ◽

Network Model ◽

Neural Network Model ◽

Thermal Characterization ◽

Adaptive Neural Network ◽

Building Components

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Synthesis of low melting point porphyrins: A quest for new materials

Journal of Porphyrins and Phthalocyanines ◽

10.1142/s1088424616500516 ◽

2016 ◽

Vol 20 (08n11) ◽

pp. 843-854 ◽

Cited By ~ 6

Author(s):

César A. Henriques ◽

Sara M. A. Pinto ◽

João Canotilho ◽

M. Ermelinda ◽

S. Eusébio ◽

...

Keyword(s):

Melting Point ◽

Materials Science ◽

Thermal Characterization ◽

New Materials ◽

Melting Points

Preparation of porphyrins which do not aggregate, possessing low melting points is an endearing challenge for several applications in materials science. In this contribution a viewpoint regarding the synthesis of low melting point porphyrins, is presented. Herein we review the synthesis of symmetrical and unsymmetrical substituted porphyrins that hold the possibility to be used in several materials science applications and present new results on the spectroscopic and thermal characterization of some low melting point meso-tetrasubstituted porphyrins.

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