Sustainable Timber-Based Building Systems in the Context of Reducing Energy Performance in the Building Use Phase

2020 ◽  
pp. 271-288
Author(s):  
Jozef Švajlenka ◽  
Mária Kozlovská ◽  
Terézia Pošiváková
Keyword(s):  
Energy Performance ◽  
Building Systems ◽  
Use Phase ◽  
Reducing Energy

scholarly journals The role of Thermally Activated Building Systems (TABS) in building energy retrofitting: energy diagnosis and management

2019 ◽  
Author(s):  
Rossana Laera ◽  
Inmaculada Martínez Pérez ◽  
Luis de Pereda Fernández ◽  
Ricardo Tendero Caballero ◽  
Francesco Iannone
Keyword(s):  
Thermal Environment ◽  
Building Energy ◽  
Energy Performance ◽  
Heat Pumps ◽  
Building Envelope ◽  
Low Grade ◽  
Concrete Core ◽  
Horizontal Structure ◽  
Thermally Activated ◽  
Building Systems

Thermally Activated Building Systems (TABS) play a major role in building envelope integration. TABS operate at low temperatures, enabling efficient utilization of renewable sources. Moreover, their combination with other building energy systems provides a high degree of dynamic interactivity with users, improving the quality of the indoor thermal environment. In this research, the efficiency of the technology of active pipe-embedded structures is investigated within its practical application in an existing office building energy retrofit in Spain. Concrete Core Activation (CCA) of the original horizontal structure aims at exploiting its thermal inertial properties and potential storage capability in combination with low-grade energy production systems and devices, such as geothermal heat pumps. A proper methodology of energy diagnosis is aimed at the optimization of TABS performance in building retrofitting. Significant energy savings could be achieved by applying appropriate solutions, control strategies and corrective actions for TABS. The continuity of energy management and follow-up has been proven necessary to keep high standards in terms of TABS energy performance, targeting the identification of energy saving opportunities for the improvement of energy efficiency.

scholarly journals Energy Efficiency Analysis in Buildings using Dynamic Simulations

2017 ◽  
Vol 2 (5) ◽  
pp. 1
Author(s):  
Elena Eftimie
Keyword(s):  
Energy Efficiency ◽  
Energy Performance ◽  
Design Stage ◽  
Dynamic Simulations ◽  
Heating Systems ◽  
Use Phase ◽  
Comfort Parameters ◽  
The Impact

This paper proposes an analysis of factors that have a significant impact on energy efficiency in buildings. Thus, as a first objective proposes an analysis of the impact of rehabilitation and modernization of buildings in view of their energy performance improvement. A second followed objective consisted of the study of some production and use thermal energy systems in order to increase the thermal comfort. Based on a case study, this paper provides the opportunity for comparative analyses both among different insulation materials for buildings and among different heating systems. Determination of energy consumption for space heating and of the building comfort parameters was achieved using dynamic simulations by means of TRNSYS program; it was envisaged that the assessment of energy efficiency in buildings, the design stage or before their rehabilitation, is more economical than finding solutions in the use phase of buildings.

Evaluating Building Systems Energy Performance Superiority and Inferiority Ranking

2021 ◽  
Author(s):  
M. Marzouk ◽  
◽  
I. Abdelbasset ◽  
K. Al-Gahtani ◽  
◽  
...  
Keyword(s):  
Energy Performance ◽  
Building Systems

PAPER-SHADE: DEVELOPMENT OF SUSTAINABLE MODULAR BUILDING SHADING SYSTEMS UTILIZING RECYCLED PAPER TOWARDS SERIAL PRODUCTION

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Adonis Cleanthous ◽  
Markella Menikou
Keyword(s):  
Energy Performance ◽  
Recycled Paper ◽  
Climatic Zones ◽  
Ongoing Research ◽  
Serial Production ◽  
Hands On ◽  
Building Systems ◽  
Vernacular Building ◽  
Research Consortium

The paper will present an ongoing research for the design and manufacturability of modular building shading systems utilizing recycled paper as the primary material ingredient. The Paper-Shade project proposes a radically new solution: surplus recycled paper into a building construction product. The research aims to develop prototypes of serially manufactured modules that are sustainable in their materiality, manufacturing process, performances, life span cycle, as well as eventual re-cycling. The methodology utilized throughout the research is primarily a hands-on one. The research consortium consists of academic, industry and professional practice partners. The prototypes therefore develop through cyclical processes involving case-study assessments (theoretical and physical), cataloguing of data and outlining directives, defining desired-for specifications, testing through simulation, physical testing and laboratory results. Serial production possibilities as well as product affordability and maximized building energy performance are also considered. The Paper-Shade project may be considered as a modern-day version of vernacular building systems such as adobe bricks. It is also a new take on the modernist era’s concrete shading modules that were extensively and successfully used in the past in hot climatic zones but unfortunately forgotten during the recent decades. The project aims to revive intelligent shading systems by prototyping sustainably produced and performing shading modules towards an improved built environment.

scholarly journals The development of an RC-network simulation model calibrated with monitoring data for use in the performance guarantee of Net-Zero houses

2020 ◽  
Vol 172 ◽  
pp. 22002
Author(s):  
Marleen Spiekman ◽  
Olav Vijlbrief ◽  
Haseeb Tahir ◽  
Yasin Bulut ◽  
Wouter Borsboom ◽  
...  
Keyword(s):  
Simulation Model ◽  
Network Simulation ◽  
Energy Transition ◽  
Energy Performance ◽  
Monitoring Data ◽  
Performance Guarantee ◽  
Construction Companies ◽  
Net Zero ◽  
Use Phase ◽  
Network Simulation Model

In order to drive forward the energy transition, construction companies and other suppliers of deep retrofitting solutions have started to give guarantees on the energy performance of very energy efficient houses. With these initiatives, a need has arisen for methods that can assess per household the actual energy performance during the use phase. An RC-network simulation model calibrated with monitoring data has been developed and tested on deep retrofitted Net-Zero houses in Emmen (the Netherlands). The results show that this has been a successful first step in order to arrive at a realistic analysis of the actual energy performance of individual houses. The big challenge will be to determine the parameters in the model with more certainty. This applies especially, but not exclusively, to the behavioural parameters.

scholarly journals Energy Performance Analysis of Insulating Windows

2013 ◽  
Vol 9 (2) ◽  
pp. 9-19
Author(s):  
Florin Iordache ◽  
Iulian Clita ◽  
Arthur-Sebastian Klepş
Keyword(s):  
Energy Consumption ◽  
Energy Dissipation ◽  
Performance Analysis ◽  
Theoretical Work ◽  
Energy Performance ◽  
Building Envelope ◽  
Interior Space ◽  
Current Concern ◽  
Building Heat ◽  
Reducing Energy

Abstract The present paper thematically fits in the current concern for reducing energy consumption to ensure normal thermal comfort in residential and tertiary building heated spaces. Windows are an important area of the building envelope through which heat dissipates from the interior space to the exterior. As it is known the new insulating window types significantly reduce energy dissipation by both transmission and infiltration. This paper aims to establish the theoretical correlations that exist between different constructive functional parameters of insulating windows, such as gas or gases located between two or three window sheets and low-ε films to be applied on interior faces of the transparent elements. The theoretical work procedures as well as the tabulated and graphical results regarding the thermal resistances for various insulated window structures are presented. The results are analyzed in comparison with the values contained in the C107 regulation for building heat calculations.

scholarly journals Office Building’s Occupancy Prediction Using Extreme Learning Machine Model with Different Optimization Algorithms

2021 ◽  
Vol 25 (1) ◽  
pp. 525-536
Author(s):  
Violeta Motuzienė ◽  
Jonas Bielskus ◽  
Vilūnė Lapinskienė ◽  
Genrika Rynkun
Keyword(s):  
Extreme Learning Machine ◽  
Energy Demand ◽  
Energy Performance ◽  
Machine Model ◽  
Size Number ◽  
Building Management ◽  
Use Phase ◽  
Learning Machine ◽  
Occupancy Prediction ◽  
Accuracy Of Prediction

Abstract Increasing energy efficiency requirements lead to lower energy consumption in buildings, but at the same time occupants’ influence on the energy balance of the building during the use phase becomes more crucial. The randomness of the building’s occupancy often leads to the mismatch of the predicted and measured energy demand, also called Energy Performance Gap. Therefore, prediction of occupancy is important both in the design and use phases of the building. The goal of the study is to apply Extreme Learning Machine (ELM) models with different optimisation algorithms – Genetic (GA-ELM) and Simulated Annealing (SA–ELM) for occupancy prediction in an office building based on measured CO2 concentrations. Both models show similar and high accuracy of prediction: R2 – 0.73–0.74 and RMSE – 1.8–1.9 for the whole measured period. Influence of population size, number of neurons, and number of iterations on results accuracy was also analysed and recommendations are given. It was concluded that both methods are suitable for occupancy prediction, but because of different simulation times, SA-ELM is recommended for the Building Management Systems (BMS), where higher speed is required.

scholarly journals Energy-Saving Potential of Applying Prefabricated Straw Bale Construction (PSBC) in Domestic Buildings in Northern China

2020 ◽  
Vol 12 (8) ◽  
pp. 3464 ◽  
Author(s):  
Xunzhi Yin ◽  
Qi Dong ◽  
Siyuan Zhou ◽  
Jiaqi Yu ◽  
Lu Huang ◽  
...  
Keyword(s):  
Northern China ◽  
Energy Performance ◽  
Cold Regions ◽  
Energy Saving Potential ◽  
Construction Methods ◽  
Heating And Cooling ◽  
Low Energy Buildings ◽  
Efficient Construction ◽  
Straw Bale ◽  
Reducing Energy

The Prefabricated Straw Bale Construction (PSBC) has been proven as one of the most efficient construction methods to achieve low-energy buildings with low environmental impacts. This research presents analysis of the rationale for using straw bale constructions in northern China and a discussion of feasible constructions of PSBC to meet the local building codes following evaluations of potential energy performance of domestic buildings with PSBC in severe cold regions and cold regions in China. The results show that the buildings with PSBC reduce both heating and cooling energy uses, as well as heating intensities across the severe cold and cold regions, compared to the domestic buildings with conventional constructions. The findings of this research will contribute to reducing energy consumption in building industries in China.

scholarly journals An Event-Driven Approach for Changing User Behaviour towards an Enhanced Building’s Energy Efficiency

Buildings ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 183
Author(s):  
Sofia Yfanti ◽  
Nikos Sakkas ◽  
Emmanuel Karapidakis
Keyword(s):  
Energy Efficiency ◽  
Air Conditioning ◽  
Building Materials ◽  
Energy Use ◽  
Energy Performance ◽  
Occupant Behaviour ◽  
User Behaviour ◽  
Building Systems ◽  
Event Driven ◽  
Renewable Technology

Worldwide, buildings are one of the main energy consumers and the improvement of their energy performance has attracted great interest and has been typically related to the optimisation, both design and operational, of Heating, Ventilation, and Air Conditioning (HVAC), lighting and DHW systems, to innovation in building materials, as well as to the integration of renewable technology in buildings. More recently, occupant behaviour has received increasing attention. Occupants’ interactions with the building systems influence their energy consumption in diverse ways. Their behaviour may affect energy use just as the systems and materials may do. Researchers identified and highlighted various aspects of this occupant behaviour and were gradually led to the conclusion that its effect might be worth investigating. This study has a twofold aim. First, to present a general conceptual framework to define, monitor and eventually change user behaviour in buildings. This framework is called “event-driven”; events are distinct moments in time associated with a potentially problematic behaviour, and the framework aims at tracking, acting upon and reporting on these events. Second, we aim to demonstrate and discuss the application and the savings achieved by means of our proposed approach and in the case of such behavioural events, in the Challenger building of Bouygues, in France.

scholarly journals Reducing Energy Performance Gap in Buildings—Built2Spec Project Solution

Proceedings ◽  
2017 ◽  
Vol 1 (7) ◽  
pp. 640 ◽  
Author(s):  
Daniele Bortoluzzi ◽  
Andrea Costa ◽  
Sara Casciati
Keyword(s):  
Energy Performance ◽  
Performance Gap ◽  
Reducing Energy
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