scholarly journals Optimization of insulation levels from an environmental perspective: impact of HVAC controls and Personal Comfort Systems

2021 ◽  
Vol 2069 (1) ◽  
pp. 012076
Author(s):  
L Landuyt ◽  
S Lauwerys ◽  
S De Turck ◽  
M Steeman ◽  
N Van Den Bossche
Keyword(s):  
Energy Efficient ◽  
Indoor Environment ◽  
Energy Savings ◽  
Inverse Correlation ◽  
Iterative Design ◽  
Operational Energy ◽  
Insulation Thickness ◽  
Energy Simulations ◽  
Student Team

Abstract Today, strict insulation requirements apply. Nevertheless, the inverse correlation of thermal conductivity with insulation thickness leads to decreasing energy savings with increasing insulation packages. Therefore, a balance between potential energy savings and environmental impact due to additional materials using Life Cycle Assessment (LCA) needs to be strived for. This balance is sought for a case study called ‘The Mobble’ i.e. a flexible, modular, and circular building system developed by a student team from Ghent University. Through an iterative design process supported by LCA, comfort and dynamic energy simulations efforts are made to design an energy-efficient and low impact module with an agreeable indoor environment. First, material choices are made based on LCA and the material impact of a 5-module home is calculated. Second, energy calculations are executed in Modelica/Dymola. For this, three possible energy reductions are explored: insulating the building, altering the working regime of the HVAC system and lowering the setpoint temperature while maintaining comfort by using personal comfort systems (PCS). The results support PCS as a possible energy conservation measure and indicate that reducing operational energy does not shift the environmental burden to the additional materials’ production. However, these environmental saving effects decrease as the operational share decreases.

Application of Green Lighting Technology in Highway Service – A Case Study of Mt. Lushan West Sea Tourism Highway Service

2014 ◽  
Vol 548-549 ◽  
pp. 1815-1819 ◽  
Author(s):  
Xiao Chun Qin ◽  
She Gang Shao ◽  
Yi Shen
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
Energy Savings ◽  
Light Guide ◽  
Operating Costs ◽  
Natural Light ◽  
Lighting Technology ◽  
Lighting Systems ◽  
Service Application

Green lighting technology has the advantages of energy efficiency, friendly environment, safety and comfort. Based on the introduction of green lighting technology, taken the Mt. Lushan West Sea tourist highway service as the case study, we analyzed light guide illumination, the optimum use of natural light and energy efficient lighting respectively from the aspects of technical characteristics and the specific highway service application. We finally made the economic analysis in the energy savings of green lights in the highway service, and the result showed that through the use of green lighting systems Mt. Lushan West Sea tourist highway service could save electricity and reduce operating costs 134,700 Yuan per year.

scholarly journals EVALUATION OF ENERGY-EFFICIENT RETROFIT POTENTIAL FOR GOVERNMENT OFFICES IN INDIA

2021 ◽  
Vol 6 (2) ◽  
pp. 03-17
Author(s):  
Gazal Dandia ◽  
◽  
Pratheek Sudhakaran ◽  
Chaitali Basu ◽  
◽  
...  
Keyword(s):  
Energy Consumption ◽  
Total Energy ◽  
Energy Efficient ◽  
Energy Demand ◽  
Energy Savings ◽  
High Energy ◽  
Payback Period ◽  
Total Energy Consumption ◽  
The Cost

Introduction: High energy consumption by buildings is a great threat to the environment and one of the major causes of climate change. With a population of 1.4 billion people and one of the fastest-growing economies in the world, India is extremely vital for the future of global energy markets. The energy demand for construction activities continues to rise and it is responsible for over one-third of global final energy consumption. Currently, buildings in India account for 35% of total energy consumption and the value is growing by 8% annually. Around 11% of total energy consumption are attributed to the commercial sector. Energy-efficient retrofitting of the built environments created in recent decades is a pressing urban challenge. Presently, most energy-efficient retrofit projects focus mainly on the engineering aspects. In this paper, we evaluate various retrofitting options, such as passive architectural interventions, active technological interventions, or a combination of both, to create the optimum result for the selected building. Methods: Based on a literature study and case examples, we identified various energy-efficient retrofit measures, and then examined and evaluated those as applied to the case study of Awas Bhawan (Rajasthan Housing Board Headquarters), Jaipur, India. For the evaluation, we developed a simulation model using EQuest for each energy measure and calculated the resultant energy savings. Then, based on the cost of implementation and the cost of energy saved, we calculated the payback period. Finally, an optimum retrofit solution was formulated with account for the payback period and ease of installation. Results and discussion: The detailed analysis of various energy-efficient retrofit measures as applied to the case study indicates that the most feasible options for retrofit resulting in optimum energy savings with short payback periods include passive architecture measures and equipment upgrades.

A case study of lighting Turkish historic mosques using LEDs: Semsi Ahmet Pasha Mosque

2017 ◽  
Vol 50 (6) ◽  
pp. 894-910 ◽  
Author(s):  
L Erdem Atılgan ◽  
D Enarun
Keyword(s):  
Energy Efficient ◽  
Energy Savings ◽  
The World ◽  
Modern Technologies

There are more than 86,000 mosques in Turkey, 6733 of these being historic mosques. This study aims at developing a novel LED lantern for enhancing the interior illumination of Turkish historic mosques while providing significant energy savings. In order to accomplish this, an LED lantern design is carried out, the photometric results of which are analysed using the world renowned architect Sinan’s Semsi Ahmet Pasha Mosque from 1580 as a model. With this lantern, the target is to maintain the recommended illuminances and comfort conditions in the interior of historic mosques while achieving substantial energy savings and, at the same time, preserving the historic structure of the mosque. The study promotes the utilization of modern technologies and brings a novel, energy efficient and sustainable approach to Turkish historic mosques.

scholarly journals Attic extension and thermal renovation of the residential building: Case study

Spatium ◽  
2006 ◽  
pp. 41-46 ◽  
Author(s):  
Milica Jovanovic-Popovic ◽  
Ana Radivojevic ◽  
Dusan Ignjatovic ◽  
Martin Elezovic
Keyword(s):  
Thermal Insulation ◽  
Industrial Production ◽  
Energy Efficient ◽  
Energy Production ◽  
Energy Savings ◽  
Residential Building ◽  
The State ◽  
Construction Period

Buildings are the only resource growing constantly. Although relevant data for Serbia is not available, it is presumed that even more than 50% of energy production is spent on buildings in our country. This conclusion is based on two facts: the present industrial production and the state of buildings. In order to establish measures for energy efficient refurbishment, one residential building was analyzed in Belgrade. The chosen building represents the construction period when application of thermal insulation was not obligatory according to building regulation. As more than 35% of buildings were built in that period, they represent great potential for energy savings through the process of refurbishment.

scholarly journals Integration of Prioritisation Criteria in the Design of Energy Efficient Retrofitting Projects at District Scale: A Case Study

2019 ◽  
Vol 11 (14) ◽  
pp. 3861 ◽  
Author(s):  
Miguel Á. García-Fuentes ◽  
Sonia Álvarez ◽  
Víctor Serna ◽  
Maxime Pousse ◽  
Alberto Meiss
Keyword(s):  
Value Chain ◽  
Energy Efficient ◽  
Energy Savings ◽  
Design Parameters ◽  
Decision Making Process ◽  
Building Stock ◽  
Existing Building ◽  
Lack Of Information ◽  
Selection Of

The evident need for improving the existing building stock still suffers from important barriers, such as the fragmentation of the value chain, the lack of information regarding some solutions, and the lack of confidence with respect to energy savings, which prevent unlocking investments, and the difficult communication among stakeholders. Therefore, new processes based on exploiting the potential of existing and new tools are required. In this framework, the OptEEmAL project has developed a tool that integrates stakeholders, data and tools in order to ease the process of designing energy efficient retrofitting projects at building and district scale. This tool works around an optimisation framework in order to evaluate, compare and optimise candidate retrofitting scenarios against a set of indicators showing the performance of the district. This evaluation and optimisation method is based on aggregating indicators through transforming the priorities of stakeholders into a mathematical weighting scheme, which makes it possible to provide scenarios within their expectations. Therefore, the generation of these scenarios is driven by their design parameters, being thus flexible and adapted to their needs. This paper shows the implementation of this tool and specifically 3 different prioritisation schemes, analysing how they impact into the decision making process and selection of the retrofitting strategy.

Energy-Efficient Control Allocation for Over-Actuated Systems With Electric Vehicle Applications

2010 ◽  
Author(s):  
Yan Chen ◽  
Junmin Wang
Keyword(s):  
Electric Vehicle ◽  
Energy Efficient ◽  
Front Axle ◽  
Control Allocation ◽  
Electric Motors ◽  
Minimum Power Consumption ◽  
Operational Energy ◽  
Redundant Actuators ◽  
Energy Consuming

This paper presents a new control allocation (CA) scheme for improving operational energy-efficiency of over-actuated systems. By explicitly incorporating actuator efficiency functions into the CA formulation, minimum power consumption is achieved while distributing the desired virtual control among the redundant actuators. For some physical systems (e.g. hybrid electric or pure electric vehicles with electric motors) whose actuators have dual actuation modes (e.g. driving or regenerative braking of electric motors) that possess different efficiencies and/or energy consuming or gaining characteristics, a virtual actuator method is devised to augment the systems for the energy-efficient CA scheme. An electric vehicle model with rear/front axle motors or four in-wheel / hub motors constructed in the full-vehicle CarSim® simulation package is used as an application case study to show the effectiveness of the proposed energy-efficient CA method.

scholarly journals Visual comfort considered light control methods for energy efficient office buildings: A case study

2018 ◽  
Vol 22 (Suppl. 3) ◽  
pp. 875-885
Author(s):  
Woonsik Lee ◽  
Kwanwoo Song ◽  
Hyejung Cho
Keyword(s):  
Energy Saving ◽  
Energy Efficient ◽  
Energy Savings ◽  
Comfort Level ◽  
Control Methods ◽  
Visual Comfort ◽  
Light Control ◽  
Open Plan ◽  
Energy Saving Technology

This paper presents and investigates the performance of light control methods for energy savings with optimal visual comfort in open-plan office. By grouping personal light zone and tracking user?s location, we can provide an energy efficient light control in the office. Simulation and pilot testing results show that more than 60% energy savings could be achieved while providing recommended visual comfort level for each user. Since the proposed methods provide unprecedented energy savings, it can be said that this is a remarkable energy saving technology in the field of light control.

ASSESSMENT OF THE INDOOR ENVIRONMENT OF DWELLING HOUSES BY APPLYING THE COPRAS-G METHOD: LITHUANIA CASE STUDY

2011 ◽  
Vol 10 (5) ◽  
pp. 637-647 ◽  
Author(s):  
Edmundas Kazimieras Zavadskas ◽  
Arturas Kaklauskas ◽  
Zenonas Turskis ◽  
Jolanta Tamosaitiene ◽  
Darius Kalibatas
Keyword(s):  
Indoor Environment
Sign in / Sign up

Export Citation Format

Share Document