Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Second heat source optimises heat pump system

12.06.2018

Air-to-water heat pumps utilise the outside air as a heat source. Because of their relatively low initial cost, they are currently enjoying growing popularity among owners of new-build or refurbished low-energy homes. Their disadvantage: They work with decreasing outside air temperatures, so when the heating demand increases there is also decreasing energy efficiency. The BINE-Projektinfo brochure entitled “Double heats better” presents a new system concept in which the building exhaust air is integrated into the system as a second heat source and the regulation of the heat distribution is optimised.

Exhaust air supplies heat at a comparatively high temperature level and leads to favourable system costs. The scientists tested the interaction of the heat pump with the cross heat exchanger for the compact ventilation unit in order to find the optimal extraction point for the waste heat. The results show that the exhaust heat is best extracted downstream of the heat exchanger.


Overall view of the source HiL test rig. The eight available hydraulic circuits provide three different performance classes.

© E.ON Energy Research Center


The BINE-Projektinfo brochure entitled “Double heats better”

© BINE Informationsdienst

A second focus was on optimising the control strategy for the heat distribution system. The aim was to prevent the heat pump from raising the temperature higher than the actual heat demand. To achieve this, the scientists centrally collated the data from the various individual room controllers and used them to determine the supply temperature in the heat distribution system.

In the concluding simulations, the data from the two sub-projects was merged and evaluated at the source and sink side. The investigations relate to new-build and refurbished single-family homes with 140 m² of living space on two floors and an energy demand of less than 120 kWh/m²p.a.

The research project was carried out by Vaillant GmbH in cooperation with the Fraunhofer Institute for Solar Energy Systems and the E.ON Energy Research Centre at RWTH Aachen University.

You found all informations about the BINE Projectinfo brochure entitled "Double heats better" here:

http://www.bine.info/en/press/press-releases/press/pressemitteilung/zweite-waerm...

Uwe Milles/Birgit Schneider
presse(at)bine.info

About BINE Information Service

Energy research for practical applications

The BINE Information Service reports on energy research topics, such as new materials, systems and components, as well as innovative concepts and methods. The knowledge gained is incorporated into the implementation of new technologies in practice, because first-rate information provides a basis for pioneering decisions, whether in the planning of energy-optimised buildings, increasing the efficiency of industrial processes, or integrating renewable energy sources into existing systems.

About FIZ Karlsruhe

FIZ Karlsruhe – Leibniz Institute for Information Infrastructure is a not-for-profit organization with the public mission to make sci-tech information from all over the world publicly available and to provide related services in order to support the national and international transfer of knowledge and the promotion of innovation.
Our business areas:
• STN International – the world’s leading online service for research and patent information in science and technology
• KnowEsis – innovative eScience solutions to support the process of research in all its stages, and throughout all scientific disciplines
• Databases and Information Services – Databases and science portals in mathematics, computer science, crystallography, chemistry, and energy technology
FIZ Karlsruhe is a member of the Leibniz Association (WGL) which consists of 87 German research and infrastructure institutions.

Weitere Informationen:

http://www.bine.info/en - BINE Informationsdienst

Rüdiger Mack | idw - Informationsdienst Wissenschaft

More articles from Power and Electrical Engineering:

nachricht Bio-inspired material targets oceans' uranium stores for sustainable nuclear energy
17.05.2019 | DOE/Oak Ridge National Laboratory

nachricht New test rig components for faster development and validation
16.05.2019 | Fraunhofer-Institut für Betriebsfestigkeit und Systemzuverlässigkeit LBF

All articles from Power and Electrical Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Self-repairing batteries

UTokyo engineers develop a way to create high-capacity long-life batteries

Engineers at the University of Tokyo continually pioneer new ways to improve battery technology. Professor Atsuo Yamada and his team recently developed a...

Im Focus: Quantum Cloud Computing with Self-Check

With a quantum coprocessor in the cloud, physicists from Innsbruck, Austria, open the door to the simulation of previously unsolvable problems in chemistry, materials research or high-energy physics. The research groups led by Rainer Blatt and Peter Zoller report in the journal Nature how they simulated particle physics phenomena on 20 quantum bits and how the quantum simulator self-verified the result for the first time.

Many scientists are currently working on investigating how quantum advantage can be exploited on hardware already available today. Three years ago, physicists...

Im Focus: Accelerating quantum technologies with materials processing at the atomic scale

'Quantum technologies' utilise the unique phenomena of quantum superposition and entanglement to encode and process information, with potentially profound benefits to a wide range of information technologies from communications to sensing and computing.

However a major challenge in developing these technologies is that the quantum phenomena are very fragile, and only a handful of physical systems have been...

Im Focus: A step towards probabilistic computing

Working group led by physicist Professor Ulrich Nowak at the University of Konstanz, in collaboration with a team of physicists from Johannes Gutenberg University Mainz, demonstrates how skyrmions can be used for the computer concepts of the future

When it comes to performing a calculation destined to arrive at an exact result, humans are hopelessly inferior to the computer. In other areas, humans are...

Im Focus: Recording embryonic development

Scientists develop a molecular recording tool that enables in vivo lineage tracing of embryonic cells

The beginning of new life starts with a fascinating process: A single cell gives rise to progenitor cells that eventually differentiate into the three germ...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

SEMANTiCS 2019 brings together industry leaders and data scientists in Karlsruhe

29.04.2019 | Event News

Revered mathematicians and computer scientists converge with 200 young researchers in Heidelberg!

17.04.2019 | Event News

First dust conference in the Central Asian part of the earth’s dust belt

15.04.2019 | Event News

 
Latest News

Discovering unusual structures from exception using big data and machine learning techniques

17.05.2019 | Materials Sciences

ALMA discovers aluminum around young star

17.05.2019 | Physics and Astronomy

A new iron-based superconductor stabilized by inter-block charger transfer

17.05.2019 | Materials Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>