scholarly journals Systematic approach for improving energy efficiency in industrial facilities, from energy audit to practical implementation – case study production of autoclaved aerated concrete

2019 ◽  
Vol 116 ◽  
pp. 00083
Author(s):  
Boris Sucic ◽  
Marko Peckaj ◽  
Zeljko Tomsic ◽  
Jani Uranic
Keyword(s):  
Energy Efficiency ◽  
Systematic Approach ◽  
Energy Savings ◽  
Practical Implementation ◽  
Industrial Facilities ◽  
Industrial Environment ◽  
Energy Efficiency Measures ◽  
Industrial Companies ◽  
Efficiency Measures ◽  
Energy Auditing

In today’s globalized world, need for competitiveness on one side and constant pressure on the reduction of negative environmental impacts on the other side, are forcing industrial companies to systematically analyse all possibilities for the optimization of their production processes. This paper presents a systematic approach for improving energy efficiency in industrial facilities. Special attention was given to activities that were necessary for the proper identification of energy saving potential and implementation of selected energy efficiency measures in the complex industrial environment. The proposed approach includes four main activities: (1) energy auditing, identification and valorisation of opportunities for improving energy efficiency, (2) identification of key personnel who needs to be trained and motivated to become involved and to make energy efficient decisions in practice, (3) implementation of selected energy efficiency measures and (4) continuous monitoring and verification of achieved results. The proposed approach has been tested in the real industrial environment and the results are confirming that significant energy savings and overall improvement of competitiveness can be reached. Additionally, special emphasis was placed on soft elements like cooperation between energy experts, process operators and maintenance staff that are crucial for the overall success.

Sustainable Preservation of Historic Buildings

2021 ◽  
Author(s):  
◽  
Edīte Biseniece
Keyword(s):  
Energy Efficiency ◽  
Dynamic Simulation ◽  
Energy Savings ◽  
In Situ Measurements ◽  
Simulation Program ◽  
Historic Buildings ◽  
Energy Efficiency Measures ◽  
Efficiency Measures

Legal requirements as well as life quality requirements demand to increase energy efficiency of existing buildings, that has been seen to represent a huge potential in energy savings, based on the size of the segment and the individual potential. The biggest challenges during the renovation of buildings occur when it comes to historic buildings where the facade cannot be modified to maintain its unique architectural appearance and integrity. Policy makers and building owners are facing “building energy efficiency versus heritage value” dilemma when on the one hand it is important to preserve a building’s architectural value and on the other hand, energy consumption should be reduced significantly. Internal insulation is one of the energy efficiency measures that can be applied. However, this is one of the most challenging and complex energy efficiency measures due to changes in boundary conditions and hygrothermal behaviour of walls, especially for buildings in cold climate Applying of interior insulation significantly modifies the hygrothermal performance of walls and, as a consequence, may induce a risk on interstitial condensation, frost damage, mould growth and other damage patterns. The behaviour of internally insulated wall strongly depends on the properties of the used materials. There is a need to develop new methods and guidelines for decision makers on how to implement energy efficiency measures in historic buildings. The aim of this Thesis is to offer safe and effective solutions for internal insulation systems of historic masonry buildings. To achieve this goal, the following tasks have been set: to perform historic construction material testing and analyse the test wall in a laboratory environment to determine the factors influencing the accumulation of moisture and the risks associated with it; to predict hygrothermal conditions of internally insulated masonry building using dynamic simulation program and to validate said models based on long term in-situ measurements in internally insulated case buildings; to estimate potential energy savings using dynamic simulation program. Several methods are combined within the research, including regression analysis, sensitivity analysis and heat and moisture transfer simulation validated by long-term in situ measurements.

Energy Efficiency Measures for a High-Tech Building with a Solar Roof

2014 ◽  
Vol 1073-1076 ◽  
pp. 1233-1238
Author(s):  
Yao Lin Lin ◽  
Wei Yang ◽  
Ming Sheng Liu
Keyword(s):  
Energy Efficiency ◽  
Energy Savings ◽  
Electricity Consumption ◽  
Electricity Demand ◽  
High Tech ◽  
Solar Panels ◽  
Electrical Grid ◽  
Energy Efficiency Measures ◽  
Efficiency Measures ◽  
Demand Reduction

This paper presents the implementation of energy efficiency measures in a building that consists of office, lab and clean room area. Total Performance Oriented Optimization and Retrofits (TPORs) were implemented. 594 kW solar panels were installed on the roof and connected to the electrical grid during the optimization process. Ten power meters were installed throughout the building to measure the total building electricity demand, solar generated electricity demand, HVAC and non-HVAC-equipment demand to quantify the energy savings from the implementation of the energy efficiency measures and savings from the solar panels. The electricity savings from optimization on the HVAC system is about 7,209,000kWh/year (194.4kWh/m2-year), which is about 30% of the total building electricity consumption with peak demand reduction of 935 kW. There savings come from the solar panel is 811,925 kWh/yr; however, it effectively reduced the peak electricity demand by 302.6 kW.

scholarly journals Does the Balance Exist between Cost Efficiency of Different Energy Efficiency Measures? DH Systems Case

Energies ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 5151 ◽  
Author(s):  
Ieva Pakere ◽  
Dace Lauka ◽  
Dagnija Blumberga
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Energy Savings ◽  
District Heating ◽  
Energy Sources ◽  
Heating Systems ◽  
Energy Efficiency Measures ◽  
Industrial Enterprises ◽  
Efficiency Measures ◽  
District Heating Systems

The main aim of this study is to evaluate the results achieved by implementation of different support policies in form of subsidies for energy efficiency improvements and transition to renewable energy sources. The article compares the energy efficiency measures in district heating systems with other support program. In order to assess the effectiveness of implementation of different renewable energy technologies and energy efficiency projects, the levelized costs of saved energy for different support programs were determined. Authors compared different co-financed projects related to replacement of fossil fuel energy sources in district heating (mainly to biomass) and the installation of new biomass boilers, heat pumps, solar collectors and other local technologies in municipal buildings. Results show that financial support for energy efficiency measures in industrial enterprises and district heating systems has been most cost-effective, mainly due to the low co-financing rate (30%) and the high potential for energy savings in different production processes. Authors have identified the blind-spots within the funding allocation for different municipalities, which is not always dedicated to achieved energy savings.

Overhead Reduction or Energy Efficiency Measures

2016 ◽  
Vol 824 ◽  
pp. 493-502
Author(s):  
Krisztina Severnyák
Keyword(s):  
Energy Efficiency ◽  
Energy Savings ◽  
Energy Awareness ◽  
Energy Prices ◽  
The European Union ◽  
Energy Efficiency Measures ◽  
Energy Efficient Buildings ◽  
Efficiency Measures ◽  
Minimum Requirements ◽  
Utility Cost

The energy efficiency minimum requirements determined at the Decree 2006/7 by the Minister without Portfolio, has been amended in 2015, only prescribes cost optimisation levels corresponding in strictness to those by the European Union as set out in the Directive 2010/631 EU for state or EU founded renovations. With the artificial decrease in energy prices in Hungary in 2012, requirements originally considered as optimal has changed and tightening is not needed any more. By maintaining the old requirements, the energy consumption and CO2 emission of renovated and newly constructed buildings will stay below optimum levels. Ignoring actual energy prices results in an apparently low return on constructing energy efficient buildings while energy awareness is also decreasing as a result of these measures. One may wonder about the energy efficiency measures that could have been financed from the savings coming from the enforced utility cost reduction, ones that would have resulted in real energy savings, thus benefitting both the users of buildings and the implementation of Hungarian commitments with the deadline of 2020.

scholarly journals Obligatory versus voluntary energy audits: are there differences in quality?

2018 ◽  
Vol 12 (1) ◽  
pp. 522-532 ◽  
Author(s):  
Michael C. Krutwig ◽  
Adrian Tanțău
Keyword(s):  
Energy Efficiency ◽  
Energy Savings ◽  
Research Work ◽  
Quality Criteria ◽  
Quality Level ◽  
Energy Efficiency Measures ◽  
Eu Member States ◽  
Efficiency Measures ◽  
Energy Audits ◽  
Energy Balances

Abstract Directive 2012/27/UE of the European Parliament has created a new motivation for energy audits: the avoidance of penalties. According to this directive, large companies in all EU member states must carry out energy audits at least every four years. Does this obligation affect the quality of energy audits? We hypothesize that voluntary audits, in comparison to mandatory audits, have a higher quality level in terms of a higher investment in energy efficiency measures. While mandatory audits must always take the entire company into account, voluntary energy audits allow companies to focus on the most promising business or process areas. The energy balance limits can also be drawn more focused. The auditor can also be selected according to specific professional qualifications. As a methodology, we first define quality criteria for energy audits based on the energy efficiency measures determined. Important factors are the adoption rate, the calculated energy savings and the consideration of non-energy benefits in the calculation. The validation of the collected quality criteria is carried out by a comparison with the results of already existing research work. In an empirical study, we then compare data from audits of both types that have already been carried out with regard to the quality characteristics found. Via a database with 1,692 energy audits conducted in Germany in the years 2014-2016, we can draw up detailed comparisons of the energy balances and, in particular, of the measures calculated. This enables clear conclusions to be drawn about the differences in quality between the different program types.

scholarly journals Planning energy retrofits of historic buildings

2021 ◽  
Author(s):  
Tor Broström ◽  
Alessia Buda ◽  
Daniel Herrera ◽  
Franziska Haas ◽  
Alexandra Troi ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Systematic Approach ◽  
Energy Performance ◽  
Historic Buildings ◽  
Value Assessment ◽  
European Standard ◽  
Historic Building ◽  
Energy Efficiency Measures ◽  
Efficiency Measures ◽  
Holistic Assessment

This handbook follows the systematic approach outlined by the European standard EN 16883:2017 Guidelines for improving the energy performance of historic buildings. It describes how the standard can be applied in practice with chapters on heritage value assessment, building survey and holistic assessment of energy efficiency measures. The book draws on the experience from a team of international leading experts in the field of energy efficiency in historic building.

Sign in / Sign up

Export Citation Format

Share Document