Project EnNiWo

Energy optimisation and CO2 reduction are key challenges in times of climate change and rising energy costs. This project therefore focuses on achieving maximum energy efficiency in building shells as well as improved design of operating procedures and technical building facilities in commercial properties. 

In this connection, the working group under the direction of Prof. Bochtler is developing an assessment tool to document energy turnover in non-residential buildings. The current status, energy improvement potential, energy and cost reduction and required investments are set out in a clearly structured and comprehensible manner, making it easier for owners and tenants of commercial buildings to make decisions on improvement measures. First of all, the company's energy expenditure undergoes general analysis so as to gather key performance figures specific to the building in question.

If there is no comparability with similar buildings based on specific production processes, on-site measurements of mass flow are carried out to establish the process energy and thereby establish comparability. The detailed analysis is then based on a catalogue of questions to examine the efficiency of the building shell and installation systems and draw up suitable optimisation measures.

In addition to the newly developed calculation software, the project will also provide a standardised method for recording and assessing the energy efficiency of non-resid­ential buildings. The university is also able to carry out energy measurements,  run thermographic analyses of building shells and electrical appliances and prepare concepts for energy and cost reduction.



Figure 1: Thermographic image of a non-regulated heating pump. The high surface temperature of the pump housing is clearly visible. It results in a high level of heat loss in the heating system.



Figure 2: Measuring set-up including electrical current measuring device. The calipers allow current, voltage and output to be measured.

Project "IgEL"  

The project "IgEL" involves the development of learning software to provide SMEs with a platform for the transfer of knowledge for improving energy efficiency. This project sets out to create an expert database in which to publish the research outcomes­ and­ experience of Aschaffenburg University of Applied Sciences in the area of energy­ efficiency. Companies can also use the project website to present their experience and the results of measures implemented as well as suggestions relating to existing results; these are structured according to the areas of building shell, energy, water, building technology etc.

The interactive interface guides the user through the software tool on a dialogue basis. The various sections of the e-learning-based website explain how the building analysis tool works using a practical example. The aim is to encourage users to apply the building analysis to their own premises step by step, using the tool to identify potential and generate ideas for improvement measures.

The data collected is made available to all participants, creating a transfer of knowledge which allows all those involved to benefit from each other's results­ in­ the area of energy, cost and CO2 reduction, if possible applying the insights of others to their own company. This will establish a network that is capable of advancing its activities in the field of energy efficiency through mutual input. The results of this research project provide the basis for a standardised, software-based tool to analyse energy efficiency in an industrial context.