FG Maschinen- und Energieanlagentechnik

6 Items

Recent Submissions
Theoretische Untersuchung des Wärme- und Stoffübergangs am laminaren Fallfilm

Mittermaier, Martin (2018)

In this thesis a model is presented describing a laminar film flow over a vertical isothermal plate while heat and mass transfer is occurring. Most common assumptions, such as constant property data and constant film thickness, have been cancelled. The hydrodynamic model results in longitudinal and transversal velocity components and their evolution in the entrance region. Heat and mass transfe...

Dampferzeugeroptimierung zur Abwärmenutzung mittels Dampfkraftprozess an mobilen Verbrennungsmotoren

Stinner, Karl (2018)

Die im Kraftstoff gespeicherte Energie wird auch bei modernsten Verbrennungsmotoren nur zu ungefähr 30% in mechanische Antriebsleistung umgewandelt. Der größere Teil geht als Abwärme an die Umgebung verloren. Der daraus resultierende mittlere Wirkungsgrad des Pkw-Verbrennungsmotors kann jedoch durch teilweise Umwandlung der thermischen Energie erhöht werden. Hierzu kann die im Abgas verbleiben...

Experimental investigation of a liquid desiccant system for air dehumidification working with ionic liquids

Zegenhagen, Mark T. ; Ricart, Cristina ; Meyer, Thomas ; Kühn, Roland ; Ziegler, Felix (2015)

Electrically-driven compression chillers are the commonly used technology for cooling and dehumidifying air. Open sorption systems driven by solar heat are an alternative to conventional air dehumidification technology and may reduce primary energy consumption. For air dehumidification, liquid desiccant systems may exhibit some process engineering and thermodynamic advantages in comparison to s...

Messdaten zur Absorptionskälteanlage FA2

Kühn, Annett (2018-02-09)

This contribution provides measured data of a single stage H2O/LiBr absorption chiller under partload conditions.

Präzisierungen zur Methode der charakteristischen Gleichungen

Albers, Jan (2017-11-24)

The method of characteristic equations tries to describe the part load behaviour of sorption heat converters (e.g. ab- and adsorption chillers, heat pumps and transformers) in a simple but precise manner. Nevertheless, during the application of the established method some disagreements and inaccuracies occur. For example, the analytically determined parameters of the characteristic equation do ...

CE_Method. A MATLAB function for calculating the part load behaviour of absorption chillers and heat pumps based on (C)haracteristic (E)quations

Albers, Jan (2017-09-26)

The algorithm CE_METHOD calculates the part load behaviour of single stage absorption chillers and heat pumps explicitly as function of inlet temperatures and flow rates. For the characterisation of the chiller or heat pump the heat transfer capabilities (i.e. the UA-values) of five heat exchangers (Desorber, Evaporator, Condenser, Absorber and Solution heat exchanger) have to be known.