Guidance for Finding a Sustainable Balance between Energy Savings and Heritage Preservation When Retrofitting Heritage Buildings

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
E. Héberlé ◽  
J. Borderon ◽  
J. Burgholzer
Keyword(s):  
Energy Efficiency ◽  
Energy Savings ◽  
Moisture Damage ◽  
High Energy ◽  
Water Systems ◽  
Heritage Preservation ◽  
Front Door ◽  
Production Water ◽  
Heritage Buildings ◽  
High Energy Efficiency

Abstract A guidance was developed to find a sustainable balance between energy savings and heritage preservation when retrofitting heritage buildings. It was applied in a study on the retrofitting of typical Alsatian heritage buildings. Seven buildings were analysed before retrofitting to evaluate them on five criteria: energy savings, heritage preservation but also comfort in winter and in summer and moisture damage. Then, compatible retrofitting works on walls, ceilings, floors, front door, windows, ventilation and heating and hot production water systems were selected in order to create three retrofitting scenarios: a high-energy efficiency scenario with moisture-permeable materials, a balance scenario between energy efficiency and heritage preservation and a high heritage preservation scenario. The results of the study showed that these sustainable retrofitting scenarios preserve heritage while saving energy and are available in a web publication headed to Alsatian private individuals. The guidance in itself can be easily replicated to other types of heritage buildings.

Smart heating panels to increase thermal comfort and efficiency

Work ◽  
2021 ◽  
Vol 68 (s1) ◽  
pp. S29-S35
Author(s):  
Damian Backes ◽  
Marten Trenktrog ◽  
Lutz Eckstein
Keyword(s):  
Energy Efficiency ◽  
Thermal Comfort ◽  
Energy Savings ◽  
Heating System ◽  
High Energy ◽  
Computational Effort ◽  
Fast Time ◽  
Body Regions ◽  
Driving Range ◽  
High Energy Efficiency

BACKGROUND: The increasing electrification poses new challenges with respect to thermal comfort in vehicle passenger cabins. While conventional air heating with electric heaters is technically possible, it causes significant reductions in the electric driving range. OBJECTIVE: Two contradicting objectives are to be achieved: Fast heat up to provide thermal comfort and high energy efficiency to maximize the driving range under all conditions. METHODS: This apparent area of conflict can be eased by the usage of low temperature radiation reducing the energy intensive heat up of the cabin air. In order to provide high energy efficiency, the emitted radiation should mostly be directed towards relevant body regions of the passengers, resulting in the necessity to redesign the passenger cabin. RESULTS: A novel approach to redesign and optimize the dashboard and a resulting radiation heating system are presented. In order to reduce computational effort of such an optimization, the complex three-dimensional geometry is sliced into simplified two-dimensional regions which are considered individually. The resulting heating system has been manufactured and integrated into a class A vehicle. Objective thermal comfort measurements as well as subjective comfort ratings have been conducted to validate the simulative approach and the resulting energy savings of approximately 30 %. CONCLUSIONS: The developed approach to achieve a fast time to comfort as well as an increased energy efficiency shows promising results as the heating system based on it cuts performs well considering objective and subjective measurements.

Reactions in Activated Peroxide Systems and their Influences on Bleaching Performance

2020 ◽  
Vol 17 ◽  
Author(s):  
Xiaoyan Wang ◽  
Jinmei Du ◽  
Changhai Xu
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Peroxide ◽  
Energy Efficiency ◽  
Textile Industry ◽  
High Energy ◽  
Side Reactions ◽  
Competitive Reactions ◽  
High Energy Efficiency ◽  
Hydrolysis Of ◽  
Bleach Activators

Abstract:: Activated peroxide systems are formed by adding so-called bleach activators to aqueous solution of hydrogen peroxide, developed in the seventies of the last century for use in domestic laundry for their high energy efficiency and introduced at the beginning of the 21st century to the textile industry as an approach toward overcoming the extensive energy consumption in bleaching. In activated peroxide systems, bleach activators undergo perhydrolysis to generate more kinetically active peracids that enable bleaching under milder conditions while hydrolysis of bleach activators and decomposition of peracids may occur as side reactions to weaken the bleaching efficiency. This mini-review aims to summarize these competitive reactions in activated peroxide systems and their influence on bleaching performance.

High Energy Efficiency and Stability for Photoassisted Aqueous Lithium–Iodine Redox Batteries

2016 ◽  
Vol 1 (4) ◽  
pp. 806-813 ◽  
Author(s):  
Georgios Nikiforidis ◽  
Keisuke Tajima ◽  
Hye Ryung Byon
Keyword(s):  
Energy Efficiency ◽  
High Energy ◽  
High Energy Efficiency

Electrochemical lithium recovery with lithium iron phosphate: What causes performance degradation and how can we improve the stability?

2021 ◽  
Author(s):  
Lei Wang ◽  
Kathleen C Frisella ◽  
Pattarachai Srimuk ◽  
Oliver Janka ◽  
Guido Kickelbick ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Manganese Oxide ◽  
Lithium Iron Phosphate ◽  
Iron Phosphate ◽  
High Energy ◽  
Performance Degradation ◽  
Electrochemical Processes ◽  
High Energy Efficiency ◽  
The Stability

Electrochemical processes enable fast lithium extraction, for example, from brines, with high energy efficiency and stability. Lithium iron phosphate (LiFePO4) and manganese oxide (λ-MnO2) have usually been employed as the...

High Energy Efficiency of O- Emission from Microstructure Device on YSZ.

2000 ◽  
Vol 33 (6) ◽  
pp. 914-917 ◽  
Author(s):  
Yoshifumi Torimoto ◽  
Kouji Shimada ◽  
Terumasa Nishioka ◽  
Masayoshi Sadakata
Keyword(s):  
Energy Efficiency ◽  
High Energy ◽  
High Energy Efficiency
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