Do energetically renovated heating systems reach their planned energy savings? In a joint project with the Hamburg University of Applied Sciences (HAW Hamburg), the Hamburg Ministry of Environment and Energy (BUE) and the engineering firm Ratiocalor, TÜV NORD wants to assess the energy efficiency of large heating systems in a reality check and reveal optimisation potentials.
Key Objective: How To Reduce Primary Energy Consumption?
The reduction of energy consumption is one of the major challenges of the energy transition. The goal set forward by the federal government is a 20 per cent cut in primary energy consumption in comparison to 2008. “Especially in the building sector, a large proportion of primary energy can still be saved” states Gerhard Dreier, responsible for thermal power generation at TÜV NORD. To reduce energy consumption, the energy efficiency needs to be increased.
30 Large-Scale Plants On Test
And that’s exactly what TÜV NORD and his partners try to achieve. In their joint project, a total of 30 energetically redeveloped large heating systems with a capacity over 100 kW will be checked in regard to energy consumption, including all built-in components and heating circuits and their interactions. Central to the project is an online measurement of the temperatures and flows to identify weaknesses in the system and to eliminate them. The checks will be conducted by a student of HAW Hamburg who will incorporate the knowledge gained into his later master thesis.
“From an independent energy system assessment, different actors will be able to benefit”, explains Jörg Heermann, Regional Head of Hamburg-Süd at TÜV NORD Systems and second corrector of the thesis. “System installers can prove that the heating system meets all applicable criteria of efficiency, homeowners have a quality label for their heat generators, and tenants can be sure that the amount they spend on heat is reasonable. So, it’s a win-win situation for all.”
Unused Capacities of Plants
In the building sector, savings in primary energy are inevitable, with the performance far from being exhausted. “Despite good quality of the individual components, numerous heating systems are by far not running optimal”, says Günter Wolter, CEO of the engineering office Ratiocalor, which brings measurement technology and know-how to the project.
“Through an interconnection of several heating circuits and more heating components, such as solar thermal with gas or oil heating systems, the systems control become more complex and thus more error-prone”, confirms Prof. Dr.-Ing. Bernd U. Sankol of the Department of Mechanical Engineering of the HAW, who will supervise the thesis of the student. Therefore, all project partners are keen to exactly determine the consumption, abolish vulnerabilities, and ensure energy efficiency.
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