scholarly journals An Innovative Trombe Wall for Winter Use: The Thermo-Diode Trombe Wall

Energies ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2188 ◽  
Author(s):  
Jerzy Szyszka ◽  
Piero Bevilacqua ◽  
Roberto Bruno
Keyword(s):  
Solar Radiation ◽  
Building Energy ◽  
Climatic Conditions ◽  
Building Envelope ◽  
Cold Climates ◽  
Zero Energy ◽  
Viable Option ◽  
Building Envelopes ◽  
Zero Energy Building ◽  
Trombe Wall

The use of passive solutions for building envelopes represents an important step toward the achievement of more efficient and zero-energy building targets. Trombe walls are an interesting and viable option for the reduction of building energy requirements for heating, especially in cold climates. This study presents the experimental analysis of an innovative Trombe wall configuration, named a thermo-diode Trombe wall, which was specifically designed to improve the energy efficiency by providing a proper level of insulation for the building envelope. Such a design is essential in cold climates to limit the thermal losses whilst increasing solar heat gains to the heated spaces. An experimental campaign was conducted from December to March that involved monitoring the external climatic conditions and the main thermal parameters to assess the thermal performance of the proposed solution. The results demonstrated that in the presence of solar radiation, the thermo-diode Trombe wall was able to generate significant natural convection inside the air cavity, with temperatures higher than 35 °C in the upper section, by providing consistent heat gains for the indoor environment, even on cold days and for hours after the end of the daylight. The efficiency, relative to the incident solar radiation, reached 15.3% during a well-insolated winter day.

scholarly journals Energy and thermal modeling of building façade integrated photovoltaics

2018 ◽  
Vol 22 (Suppl. 3) ◽  
pp. 921-932 ◽  
Author(s):  
Konstantinos Ordoumpozanis ◽  
Theodoros Theodosiou ◽  
Dimitrios Bouris ◽  
Katerina Tsikaloudaki
Keyword(s):  
Electricity Generation ◽  
Measured Data ◽  
Building Envelope ◽  
Zero Energy ◽  
Large Area ◽  
Finite Volume Model ◽  
Volume Model ◽  
Urban Buildings ◽  
Zero Energy Building ◽  
Integrated Performance

Electricity generation on site is a design challenge aiming at supporting the concept of energy-autonomous building. Many projects worldwide have promoted the installation of photovoltaic panels on urban buildings, aiming at utilizing a large area to produce electricity. In most cases, photovoltaics are considered strictly as electricity generators, neglecting their effect to the efficiency and to the thermal behaviour of the building envelope. The integrated performance of photovoltaic ventilated fa?ades, where the photovoltaics are regarded as part of a complicated envelope system, provides design challenges and problems that cannot be overlooked within the framework of the Nearly Zero Energy Building concept. In this study, a finite volume model for photovoltaic ventilated fa?ades is developed, experimentally validated and found to have a significant convergence to measured data.

scholarly journals Performance Assessment of Phase Change Materials Integrated with Building Envelope for Heating Application in Cold Locations

2021 ◽  
Vol 1 (1) ◽  
pp. 7-14
Author(s):  
Qudama M. Q. Al-Yasiri ◽  
Márta Szabó
Keyword(s):  
Phase Change ◽  
Energy Saving ◽  
Phase Change Materials ◽  
Renewable Energy Sources ◽  
Building Energy ◽  
Building Envelope ◽  
Cold Climates ◽  
Building Energy Saving ◽  
Energy Storage Applications ◽  
Heating Loads

Phase change materials (PCMs) are increasingly investigated in the last years as successful in many thermal energy storage applications. In the building sector, PCMs are utilised to improve building efficiency by reducing cooling/heating loads and promoting renewable energy sources, such as solar energy. This paper shows the recent research works on integrating PCMs with building envelope for heating purposes. The main PCM categories and their main characteristics are presented, focusing on PCM types applied for building heating applications. The main methods adopted to incorporate PCMs with building elements and materials are mentioned, and the popular passive and active incorporation techniques are discussed. Lastly, the main contribution to building energy saving is discussed in terms of heating applications. The analysed studies indicated that all PCMs could improve the building energy saving in the cold climates by up to 44.16% regardless of their types and techniques. Several conclusions and recommendations are derived from the analysed studies that are believed to be a guideline for further research.

Climate Adaptive Building Envelopes

2021 ◽  
Author(s):  
◽  
Toms Mols
Keyword(s):  
Performance Outcomes ◽  
Zero Energy ◽  
Building Envelopes ◽  
Zero Energy Building ◽  
Current State ◽  
Efficiency Measures ◽  
Multi Criteria Analysis ◽  
State Of Research ◽  
Building Level

The aim of the Thesis is to develop the methodology for evaluation of application of climate-adaptive building solutions in reaching zero energy buildings. The Doctoral Thesis consists of an introduction, three chapters and conclusions. Chapter 1 reveals the current state of research of indoor microclimate effect on human productivity, energy efficiency measures in buildings and climate-adaptive building envelopes. Chapter 2 describes the methodology of performing assessments of indoor microclimate, multi-criteria analysis of climate-adaptive building envelopes and inverse modeling. Chapter 3 comprises the results of the study describing the discovered measurements, calculated performance outcomes, multi-criteria analysis and the output of developed system dynamics model. In the Thesis the following hypothesis was proposed: Climate-adaptive building solutions contribute to achieving a zero-energy building level while maintaining good indoor microclimate. Conclusions after measurements, tests and calculations confirm the proposed hypothesis.

Villa Castelli - Transformation of Historical Building into Nearly Zero Energy Building

2019 ◽  
Vol 887 ◽  
pp. 148-155
Author(s):  
Paola Penna ◽  
Oscar Stuffer ◽  
Alexandra Troi ◽  
Valentina Carí
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Building Envelope ◽  
Energy Sources ◽  
Uniform Structure ◽  
Zero Energy ◽  
Historical Building ◽  
Zero Energy Building ◽  
Energy Needs ◽  
Heritage Building

What Americas Cup and a heritage building have in common? They both aim at innovative technologies and cutting-edge solutions. The owner of the project, an ex-crew member of the most famous sailing match race in the world, pushed the planning team to develop extraordinary solutions for his house. The house, Villa Castelli, is an historical listed building located on the Como lake. During its history, it has been transformed many times, giving as results a non-uniform structure composed by different construction technologies. The aims of the owner were: an overall refurbishment particularly focused on energy efficiency, the exploitation of renewable energy sources based on-site production and a fixed budget. To reach these goals, the energy needs have been reduced improving the performance of the thermal envelope. Then, the building's technical systems have been re-developed in order to exploit as much as possible available renewable energy sources. From the very beginning, it was clear that, for finding optimal solutions, a multidisciplinary approach was necessary. The design approach should be the result of a shared approach integrating different fields, such as creative design, technology, knowledge of material properties, building physics. The great synergy among building envelope retrofitting, innovative technological solutions and the deployment of renewable energy sources allows the transformation of this historical listed building into an outstanding example of a nearly zero energy building (nZEB).

Air infiltration through building envelopes: A review

2011 ◽  
Vol 35 (3) ◽  
pp. 267-302 ◽  
Author(s):  
Chadi Younes ◽  
Caesar Abi Shdid ◽  
Girma Bitsuamlak
Keyword(s):  
Indoor Air ◽  
Energy Demand ◽  
Building Energy ◽  
Building Envelope ◽  
Energy Costs ◽  
Air Leakage ◽  
Building Envelopes ◽  
Air Infiltration ◽  
Considerable Impact ◽  
Evaluation Techniques

Air leakage through the building envelope into the building interiors has a considerable impact on the energy loads and consequently energy demand and energy costs of buildings. This phenomenon known as infiltration happens through various openings and venues in the building envelope varying from large openings such as doors and windows to minute cracks and crevices. In addition to impacting building energy loads, infiltration impacts indoor air quality and can result in moisture accumulation problems in the building envelope. A generalized review of infiltration that includes evaluation techniques and models, quantification, and interaction with other heat transfer phenomena is presented in this article.

scholarly journals Dynamic Adaptive Building Envelopes – an Innovative and State-of-The-Art Technology

2016 ◽  
Vol 3 (2) ◽  
pp. 167-183
Author(s):  
Sachin Harry
Keyword(s):  
Research And Development ◽  
Design Research ◽  
Building Energy ◽  
Building Envelope ◽  
Building Energy Efficiency ◽  
Building Envelopes ◽  
Sustainable Building ◽  
Innovative Strategy ◽  
Characteristic Features ◽  
Indoor Comfort

The building envelope has a key role to play in achieving indoor comfort for the occupants and building energy efficiency. A dynamic, active and integrated solution -- able to achieve the optimum thermal performance, harness energy from renewable resources and, integrate active elements and systems -- is the most promising and innovative strategy for the building envelope of tomorrow. To achieve an effective and sustainable building envelope with a dynamic behaviour, considerable efforts in research and development are necessary. This paper endeavours to present a broad review of design, research and development work in the field of Dynamic Adaptive Building Envelope (DABE). Based on detailed studies, the characteristic features, enabling technologies, and the overall motivations that have tendered to the advancement of DABE are discussed. In spite of its positive aspects, the study reveals that the concept of DABE has not yet been well-applied and needs much more exploration. Various challenges need to be resolved and advanced research undertaken to bring it to maturity and acceptance.

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