Ventilation and Air-Conditioning

Efficient ventilation, air-conditioning and refrigeration technology makes a decisive contribution to the energetic optimization of buildings and industrial processes. Our work focuses on component development in the refrigeration circuit, the use of natural refrigerants such as propane, the optimization of heat exchangers and energy-efficient ventilation concepts for residential and office buildings.

 

Refrigeration Technology and Natural Refrigerants

 

Heat Exchangers

 

Ventilation of Apartments und Offices

 

Dehumidification

In order to operate buildings, we have to reduce energy requirements and then cover these as far as possible with renewable energies in a cost-, energy- and resource-efficient manner. This is where our work in the field of efficient ventilation, air conditioning and refrigeration technology comes in.

Heat pumps are our main focus for the heat supply of buildings. We offer the entire value-added chain for this technology: from component development in the refrigeration circuit, through equipment and system development, to quality assurance in real operation. The focus is on the optimization of heat exchangers and the use of climate-friendly and natural refrigerants, such as propane.

Our focus in the field of heat exchanger development is the targeted identification of structure/material and coating combinations depending on the system requirements. This enables us to identify new potentials for material savings and COP (Coefficient of Performance) increase for aligned 3D structures (fibers, wires, fabrics). In addition, a suitable combination of hydrophilic/hydrophobic surface coating can be used to prevent condensate blocking and reduce ice formation when used as evaporators.

We place a special focus on the development and evaluation of comfort-oriented and energy-efficient ventilation for residential and office buildings. For this purpose, air quality, air temperature and air humidity as well as their spatial distribution must be combined with efficient heat recovery concepts and suitable flow control. Energetic aspects are considered as well as the evaluation of indoor air quality with regard to comfort and user behavior.

The provision of fresh supply air for residents and users that is adjusted in terms of temperature and humidity as well as highly efficient heat recovery are further focal points of our work.

The energetic evaluation is based on simulations and experimental characterization. This also enables us to develop and evaluate new types of heat exchangers. When it comes to dehumidification, we use our extensive expertise in the development, characterization and processing of sorption materials.

Selected Research Projects

 

CRAVEzero

Cost Reduction and Market Acceleration for Viable Nearly Zero-Energy Buildings

 

LowEx-Stock Analysis

LowEx-Concepts for the Heat Supply of Existing Multi-Family Houses

 

Thermal Fabric

Technological Design and Thermal Fluid Dynamic Characterization of Wire Fabric-Based Micro Heat Exchangers with High Performance Potential

 

MinWaterCSP

Heat Exchanger Development – Design and Experimental Performance Test of Heat Exchanger Bundles with Wire Structures

Lena Schnabel

Contact Press / Media

Dr.-Ing. Lena Schnabel

Ventilation and Air-Conditioning

Fraunhofer ISE
Heidenhofstr. 2
79110 Freiburg

Phone +49 761 4588-5412

Stefan Henninger

Contact Press / Media

Dr. Stefan Henninger

Ventilation and Air-Conditioning

Fraunhofer ISE
Heidenhofstr. 2
79110 Freiburg

Phone +49 761 4588-5104

In addition to our research and development in the field of ventilation and air-conditioning technology, we offer our customers our technical expertise in the testing and characterization of devices and components for use in heating and cooling technology:

Center for Heating and Cooling Technologies

Current Publications - Ventilation and Air-Conditioning:

Jahr
Year
Titel/Autor:in
Title/Author
Publikationstyp
Publication Type
2021 A new retrofitting strategy for the improvement of indoor environment quality and energy efficiency in residential buildings in temperate climate using prefabricated elements
Pungercar, V.; Zhan, Q.; Xiao, Y.; Musso, F.; Dinkel, A.; Pflug, T.
Zeitschriftenaufsatz
Journal Article
2021 Reduction of Rotation Phase Supercooling in N-Docosanol Nano Phase Change Slurries
Kick, M.; Gschwander, S.
Konferenzbeitrag
Conference Paper
2021 Ventilation Effectiveness of Alternating Façade-Integrated Ventilation Devices
Auerswald, S.; Hörberg, C.; Pflug, T.; Pfafferott, J.; Bongs, C.
Vortrag
Presentation
2021 Storage capacity in dependency of supercooling and cycle stability of different PCM emulsions
Gschwander, S.; Niedermaier, S.; Gamisch, S.; Kick, M.; Klünder, F.; Haussmann, T.
Zeitschriftenaufsatz
Journal Article
2021 Refrigerant maldistribution in brazed plate heat exchanger evaporators. Part B: Analysis of the influence of maldistribution on the evaporator performance
Navarro-Peris, E.; Alvarez-Piñeiro, L.; Schnabel, L.; Corberan, J.M.
Zeitschriftenaufsatz
Journal Article
2021 Refrigerant maldistribution in brazed plate heat exchanger evaporators. Part A: Testing campaign and experimental results
Navarro-Peris, E.; Alvarez-Piñeiro, L.; Albaladejo, P.; Schnabel, L.; Corberan, J.M.
Zeitschriftenaufsatz
Journal Article
2021 Optimierte Regelung von thermisch getriebenen Kühlsystemen - Simulation und Praxistest
Nienborg, B.; Singler, J.; Gührlich, D.; Dalibard, A.
Aufsatz in Buch
Book Article
2020 Capillary-assisted evaporation of water from finned tubes - Impacts of experimental setups and dynamics
Seiler, J.; Volmer, R.; Krakau, D.; Pöhls, J.; Ossenkopp, F.; Schnabel, L.; Bardow, A.
Zeitschriftenaufsatz
Journal Article
2020 Development of a Simple Setup for Temperature Dependent Mass Spectrometric Measurements for the Investigation of Outgassing Effects in Polymeric Materials for Solar Application
Piekarczyk, Andreas; Heitmann, Ulrike; Weiß, Karl-Anders; Köhl, Michael; Bald, Ilko
Zeitschriftenaufsatz
Journal Article
2020 Experimental Investigation of the Air Exchange Effectiveness of Push-Pull Ventilation Devices
Auerswald, S.; Hörberg, C.; Pflug, T.; Pfafferott, J.; Bongs, C.; Henning, H.-M.
Zeitschriftenaufsatz
Journal Article
2020 Trends and Recent R&D Activities on Fuel Driven Sorption Heat Pumps
Füldner, G.; Wiemken, E.; Rivero Pacho, A.; Metcalf, S.; Gluesenkamp, K.; Yang, Z.; Frazzica, A.; Aprile, M.; Toppi, T.; Motta, M.; Critoph, R.E.; Schossig, P.
Vortrag
Presentation
2020 A Novel Approach for the Determination of Sorption Equilibria and Sorption Enthalpy Used for MOF Aluminium Fumarate with Water
Laurenz, E.; Füldner, G.; Schnabel, L.; Schmitz, G.
Zeitschriftenaufsatz
Journal Article
2020 Simulative study of a novel fuzzy demand controlled ventilation for façade-integrated decentralized systems in renovated residential buildings
Carbonare, N.; Pflug, T.; Bongs, C.; Wagner, A.
Zeitschriftenaufsatz
Journal Article
2020 Unravelling the water adsorption in a robust iron carboxylate metal-organic framework
Lenzen, D.; Eggebrecht, J.G.; Mileo, P.G.M.; Fröhlich, D.; Henninger, S.; Atzori, C.; Bonino, F.; Lieb, A.; Maurin, G.; Stock, N.
Zeitschriftenaufsatz
Journal Article
2020 Schallimmissionen von Luftwärmepumpen. Methodik zur und erste Ergebnisse einer Langzeitmessung im Feld
Nienborg, B.; Oltersdorf, T.; Günther, D.; Henninger, S.; Müller, M.; Rollwage, C.
Vortrag
Presentation
2020 Solarthermiekosten senken
Kramer, W.; Keuper, A.
Zeitschriftenaufsatz
Journal Article
2019 Comfort-oriented Control Strategies for Decentralized Ventilation Using Co-Simulation
Carbonare, N.; Pflug, T.; Bongs, C.; Wagner, A.
Konferenzbeitrag
Conference Paper
2019 A metal-organic framework for efficient water-based ultra-low-temperature-driven cooling
Lenzen, Dirk; Zhao, Jingjing; Ernst, Sebastian-Johannes; Wahiduzzaman, Mohammad; Inge, A. Ken; Fröhlich, Dominik; Xu, Hongyi; Bart, Hans-Jörg; Janiak, Christoph; Henninger, Stefan; Maurin, Guillaume; Zou, Xiaodong; Stock, Norbert
Zeitschriftenaufsatz
Journal Article
2019 Adsorption dynamics of MOF coatings for waste heat driven cooling
Laurenz, E.; Velte, A.; Kummer, H.; Füldner, G.; Schnabel, L.
Konferenzbeitrag
Conference Paper
2019 Air-Con Metal-Organic Frameworks in Binder Composites for Water Adsorption Heat Transformation Systems
Gökpinar, S.; Ernst, S.-J.; Hastürk, E.; Möllers, M.; El Aita, E.; Wiedey, R.; Tannert, N.; Nießing, S.; Abdpour, S.; Schmitz, A.; Quodbach, J.; Füldner, G.; Henninger, S.; Janiak, C.
Zeitschriftenaufsatz
Journal Article
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