Fakultät für Maschinenbau und Verfahrenstechnik. Foto: Daniel Fürst

Faculty of

Mechanical and Process Engineering

Laboratory for Energy and Process Engineering

Foto: Christina Bleier

Exhaust gas analysis

Test setup	Exhaust gas analysis
Belongs to	Laborytory for Energy and Process Engineering
Academic leadership	Prof. Dr.-Ing. Marcus Reppich
Room	D1.10
Laboratory belongs to	Bachelor in Environmental and Process Engineering
Workstations	1
History
Tasks and objectives	Students become familiar with various methods of exhaust gas analysis and the functional principles of the equipment used. Theoretical knowledge from the modules Thermodynamics 1 and Thermodynamics 2 for the calculation of combustion processes is compounded. The influence of important parameters on combustion and on the composition of the flue gas is identified. Students practice using the measuring instruments by determining the flue gas composition.
Laboratory equipment	Orsat apparatus Mobile exhaust gas measuring device

Fuel cell

Test setup	Fuel cell
Belongs to	Laborytory for Energy and Process Engineering
Academic leadership	N.N.
Room	D1.06
Laboratory belongs to	Bachelor in Mechanical Engineering Bachelor in Environmental and Process Engineering Master in Environmental and Process Engineering
Workstations	1
History	The fuel cell has been in use since about 2004.
Tasks and objectives	Fuel cells are used for the direct conversion of chemical and electrical energy. In most cases, hydrogen is used for this purpose, preferably obtained from renewable energies, e.g. by electrolysis. This means that fuel cells represent an essential building block for the increasingly important storage of renewable energies. At this test bench, students learn about the design and operation of fuel cells as well as the necessary measuring and control technology. They expand their knowledge relating to the use of renewable energies.
Laboratory equipmen	Fuel cell with Hydrogen supply Associated measuring technology for recording temperature, hydrogen consumption, current and voltage

Fuel cell test bench

Test setup	Fuel cell test bench
Belongs to	Laborytory for Energy and Process Engineering
Academic leadership	NN
Room	D1.06
Laboratory belongs to	Bachelor in Environmental and Process Engineering
Workstations	1
History	The test bench was set up in approximately 2009.
Tasks and objectives	Fuel cells are used for the direct conversion of chemical and electrical energy. In most cases, hydrogen is used for this purpose, preferably obtained from renewable energies, e.g. by electrolysis. This means that fuel cells represent an essential building block for the increasingly important storage of renewable energies. At this test bench, students learn about the design and operation of fuel cells as well as the necessary measuring and control technology. They expand their knowledge relating to the use of renewable energies.
Laboratory equipment	Fuel cell test bench consisting of Industrial fuel cell Hydrogen supply

Fuel cell system

Test setup	Exhaust gas analysis
Belongs to	Laborytory for Energy and Process Engineering
Academic leadership	NN
Room	D1.06
Laboratory belongs to	Master in Environmental and Process Engineering
Workstations	1
History	Commissioned in 2015.
Tasks and objectives	Fuel cells are used for the direct conversion of chemical and electrical energy. In most cases, hydrogen is used for this purpose, preferably obtained from renewable energies, e.g. by electrolysis. This means that fuel cells represent an essential building block for the increasingly important storage of renewable energies. At this test bench, students learn about the design and operation of fuel cells for power generation and cogeneration, as well as the necessary measuring and control technology. They expand their knowledge relating to the use of renewable energies.
Laboratory equipment	Fuel cell system consisting of Water-cooled fuel cell Hydrogen supply Associated measuring technology for recording temperature, hydrogen consumption, current and voltage

Steam power plant

Test setup	Exhaust gas analysis
Belongs to	Laborytory for Energy and Process Engineering
Academic leadership	Prof. Dr.-Ing. Marcus Reppich
Room	D1.10
Laboratory belongs to	Bachelor in Environmental and Process Engineering
Workstations	1
History	The steam power plant was constructed in about 2008 using funds from the HTO (High-Tech-Offensive Bayern).
Tasks and objectives	Steam power plants are used for the generation of electrical energy from both fossil and renewable energies. At this test bench, students learn about the design and operation of steam power plants as well as the necessary measuring and control technology. They expand their knowledge relating to the use of power plant technology.
Laboratory equipment	Steam power plant consisting of Steam generator Superheater Turbine Condenser Feed pump Generator Cooling tower Heat exchanger for heat extraction Water treatment Associated measuring technology for recording temperature, pressure and flow

Renewable energy demonstrator

Test setup	Renewable energy demonstrator
Belongs to	Laborytory for Energy and Process Engineering
Academic leadership	NN
Room	D1.06
Laboratory belongs to	Bachelor in Environmental and Process Engineering
Workstations	1
History	Approx. 2006
Tasks and objectives	Energy storage is needed to be able to continuously use renewable energies such as solar radiation. In this way, hydrogen can be produced from surplus solar power by means of electrolysis and, if required, converted back into electricity in a fuel cell. These interrelationships are clearly demonstrated with this test setup. Current-voltage characteristics and efficiencies can be determined.
Laboratory equipment	Photovoltaic solar cell with illuminating device Electrolyzer with hydrogen and oxygen storage Fuel cell Measuring technology for recording current and voltage

Boiler test bench

Test setup	Boiler test bench
Belongs to	Laborytory for Energy and Process Engineering
Academic leadership	NN
Room	D1.06
Laboratory belongs to	Bachelor in Mechanical Engineering Bachelor in Environmental and Process Engineering
Workstations	1
History	The test bench was constructed in 1998. Part of it was donated by the company Buderus.
Tasks and objectives	Boilers are used to provide heat for the purposes of heating and hot water. At this test bench, students learn about the design and operation of boilers as well as the necessary measuring and control technology. They expand their knowledge in the field of heating technology and efficient energy use.
Laboratory equipment	Boiler test bench consisting of Low-temperature oil boiler Condensing gas boiler Plate heat exchanger for heat dissipation

Ideal gases

Test setup	Ideal gas
Belongs to	Laborytory for Energy and Process Engineering
Academic leadership	N.N.
Room	D1.06
Laboratory belongs to	Bachelor in Environmental and Process Engineering
Workstations	1
History	2011
Tasks and objectives	Gases are the most important medium for thermodynamic processes. Assuming ideal behavior, simple relationships between the thermodynamic state variables pressure, temperature and volume can be derived. These relationships, derived in the lecture, are clearly demonstrated in the experiments. The converted work and heat are determined in experiments and compared with theory.
Laboratory equipment	Double-walled glass cylinder/glass flask unit with electric heater and cooling thermostat Measuring technology for recording temperature and pressure

Calorimeter

Test setup	Calorimeter
Belongs to	Laborytory for Energy and Process Engineering
Academic leadership	N.N
Room	D1.06
Laboratory belongs to	Bachelor in Environmental and Process Engineering
Workstations	1
History	2011
Tasks and objectives	Calorimeters are used to determine the combustion enthalpy of various fuels. Defined quantities of the material to be analyzed are introduced into the reaction crucible and completely burned with oxygen. Heat is transferred to the water surrounding the crucible until a temperature equilibrium is reached. The combustion enthalpy can be determined by measuring the temperature change.
Laboratory equipment	Bomb calorimeter with temperature measurement and precision scale

Rectification of a binary liquid mixture

Test setup	Rectification of a binary liquid mixture
Belongs to	Laborytory for Energy and Process Engineering
Academic leadership	Prof. Dr.-Ing. Marcus Reppich
Room	D1.06
Laboratory belongs to	Bachelor in Environmental and Process Engineering
Workstations	1
History	Approx. 2005
Tasks and objectives	Independent performance of the separation of a binary liquid mixture and subsequent experiment evaluation should enable students to apply and expand upon their knowledge of thermal separation processes acquired in the Thermal Process Engineering module in a practical manner and to understand the impact of essential process parameters on the quality and quantity of the products obtained.
Laboratory equipment	Rectification system made of glass with bubble trays for separating binary liquid mixtures, density meter

Stirring tank

Test setup	Stirring tank
Belongs to	Laborytory for Energy and Process Engineering
Academic leadership	Prof. Dr.-Ing. Marcus Reppich
Room	D1.10
Laboratory belongs to	Bachelor in Environmental and Process Engineering
Workstations	1
History	-
Tasks and objectives	Mixing and stirring of flowable materials are important basic process engineering operations. Students learn procedures for describing stirrers by means of similarity ratios and for determining the optimum operating point, as well as the basics of scaling up stirrers. Students will recognize the advantages of conducting experiments at laboratory scale and scaling up later. Theoretical knowledge of the modules Thermodynamics 1 and Thermodynamics 2 will be expanded.
Laboratory equipment	Stirring tank

Stirring tank reactor

Prof. Dr. rer. nat. Thomas Osterland am Rührkesselreaktor (Foto: Christina Bleier).

Test setup	Stirring tank reactor
Belongs to	Laborytory for Energy and Process Engineering
Academic leadership	Prof. Dr. rer. nat. Thomas Osterland
Room	D1.10
Laboratory belongs to	Bachelor in Environmental and Process Engineering
Workstations	1
History	Commissioned in 2015 (first used in practical training in winter semester 2015/16)
Tasks and objectives	Chemical reactions in the fluid phase are often performed in stirring tank reactors. Discontinuous operation is preferred with small production quantities in particular. In concrete terms, the students should learn to operate a stirring tank reactor in discontinuous operation based on a classic esterification, transesterification or saponification experiment. Significant basic operations of chemical process technology are applied, including tempering and measuring liquids using a stirrer and a dosing device. In addition, the plant is equipped with process control technology, which is operated by the students. Temperature and conductivity measurements allow conclusions to be drawn about the heat transfer in the reactor, the reaction heat and the reaction kinetics.
Laboratory equipment	Stirring tank reactor test setup consisting of Transparent stirring tank with heating and cooling via double jacket Thermostat for tempering raw materials and reaction mixture Measuring technology for recording heating power, conductivity, temperature and fill level Process control technology for controlling the dosing device and stirrer Data acquisition via interface and software

Solar collector test bench

Foto: Andreas Kunert

Test setup	Solar collector test bench
Belongs to	Laborytory for Energy and Process Engineering
Academic leadership	NN
Room	D1.06
Laboratory belongs to	Bachelor in Mechanical Engineering Bachelor in Environmental and Process Engineering
Workstations	1
History	The solar collector test bench was constructed in approximately 2002 and last modified in 2015.
Tasks and objectives	Thermal and photovoltaic solar collectors serve the utilization of solar energy. The characteristics of thermal and photovoltaic collectors as well as their degrees of efficiency can be determined with the solar collector test bench. At this test bench, students learn about the design and operation of thermal and photovoltaic solar modules, as well as the required measuring and control technology. They expand their knowledge in the field of use of renewable energies.
Laboratory equipment	Solar collector test bench consisting of Frame for holding the collectors Solar simulator incl. control technology Cooling thermostat Associated measuring technology for recording temperature, flow, radiation intensity, current and voltage

Viscometry

Test setup	Viscometry
Belongs to	Laborytory for Energy and Process Engineering
Academic leadership	Prof. Dr.-Ing. Marcus Reppich
Room	D1.10
Laboratory belongs to	Bachelor in Environmental and Process Engineering
Workstations	2
History
Tasks and objectives	The reliable determination of physical material properties is a fundamental prerequisite for the design of process engineering apparatuses and plants. Students learn different methods for determining the viscosity and the functional principles of the devices used. Theoretical knowledge of the modules Thermodynamics 1 and Thermodynamics 2 on determining physical material properties is compounded. The temperature dependence of the viscosity is determined for Newtonian and non-Newtonian fluids. Students practice using the measuring devices by independently measuring the viscosity.
Laboratory equipment	Cannon-Fenske capillary viscometer Rotating viscometer

Dwell time distribution

Test setup	Dwell time distribution
Belongs to	Laborytory for Energy and Process Engineering
Academic leadership	Prof. Dr. rer. nat. Thomas Osterland
Room	D1.10
Laboratory belongs to	Bachelor in Environmental and Process Engineering
Workstations	1
History	Commissioned in 2015 (first used in practical training in winter semester 2015/16)
Tasks and objectives	Important parameters of chemical production processes such as space-time yield, selectivity and conversion depend strongly on the reactor type and the resulting dwell time distribution. Students can experience this themselves at the test bench using miniaturized reactors. A characteristic resistance profile can be determined for each of three different continuous reactor types by continuously determining the concentration of a tracer. Through evaluation of the profiles and comparison with theoretical expectations, students gain important insights into the validity and limits of models, and learn methods for determining important process variables.
Laboratory equipment	Test setup consists of Continuously operated stirring tank reactor Stirring tank cascade Flow tube reactor The reactors are each equipped with PH measuring probe Temperature control jacket Two reactant inlets Gear pump for reactant transport

Heat pump

Test setup	Heat pump
Belongs to	Laborytory for Energy and Process Engineering
Academic leadership	NN
Room	D1.10
Laboratory belongs to	Bachelor in Environmental and Process Engineering
Workstations	1
History	Approx. 1990, measuring technology upgraded in approx. 2000
Tasks and objectives	Heat pumps use low-temperature heat, e.g. geothermal or groundwater heat, to provide useful heat at a low temperature level, e.g. for heating purposes. The students learn the operating principles of heat pumps and determine their efficiency depending on the prevailing temperature spread.
Laboratory equipment	Heat pump incl. heat exchanger for heat absorption and dissipation Measuring technology for recording temperature, flow, pressure and drive power

Heat exchanger

Test setup	Heat exchanger
Belongs to	Laborytory for Energy and Process Engineering
Academic leadership	Prof. Dr.-Ing. Marcus Reppich
Room	D1.06
Laboratory belongs to	Bachelor in Environmental and Process Engineering
Workstations	2
History	Last modified in 2015.
Tasks and objectives	Students learn about the design and functioning of different types of heat exchangers. Theoretical knowledge from the modules Thermodynamics 1 and Thermodynamics 2 on calculating heat exchangers using similarity ratios is compounded. The influence of important parameters on the operation of heat exchangers is recognized. Students practice using the measuring devices by measuring temperatures, temperature trends and flow.
Laboratory equipment	Double tube heat exchanger Plate heat exchanger

Heat exchanger system

Test setup	Heat exchanger system
Belongs to	Laborytory for Energy and Process Engineering
Academic leadership	Prof. Dr.-Ing. Marcus Reppich
Room	D1.06
Laboratory belongs to	Bachelor in Mechanical Engineering Bachelor in Environmental and Process Engineering
Workstations	1
History	Approx. 2001, constructed mainly using funds obtained from company donations in the context of diploma theses.
Tasks and objectives	Heat exchangers are among the most important process and energy engineering equipment. At this test bench, students learn about the design and operation of plate heat exchangers as well as the necessary measuring and control technology of a system for heating or cooling liquid media. They expand their knowledge in the field of non-stationary heat transfer and in the field of apparatus and plant construction.
Laboratory equipment	Heat exchanger system consisting of Two plate heat exchangers A store Variable-speed centrifugal pumps Associated measuring technology for recording temperature, pressure and flow

Heat transfer by convection

Test setup	Heat transfer by convection
Belongs to	Laborytory for Energy and Process Engineering
Academic leadership	Prof. Dr.-Ing. Gerhard Reich
Room	D1.10
Laboratory belongs to	Bachelor in Environmental and Process Engineering
Workstations	1
History	Set up in 2012
Tasks and objectives	Heat transport in moving fluids takes place by convection. The relationship between temperature differences, flow rates, material properties and heat flux density is described by means of the similarity theory through the so-called Nusselt number. By means of various experiments with different geometries and flow speeds, the students verify the relationships of convective heat transfer and compare them with theoretical predictions.
Laboratory equipment	Flow channel with various fittings Measuring technology for recording wood performance, temperature and flow

Heat transfer by conduction

Test setup	Heat transfer by conduction
Belongs to	Laborytory for Energy and Process Engineering
Academic leadership	NN
Room	D1.10
Laboratory belongs to	Bachelor in Environmental and Process Engineering
Workstations	1
History	Set up in 2011
Tasks and objectives	Heat transport in solids and fluids takes place by conduction. The relationship between temperature gradient and heat flux density is described by Fourier’s law of heat conduction. By means of various experiments with different materials and geometries, the students verify the relationships of stationary and non-stationary heat transfer and compare them with theoretical predictions.
Laboratory equipment	Test setup for measuring one-dimensional heat conduction in linear and cylindrical structures Electric heater Cooling thermostat measuring technology for recording temperature

Heat transfer by radiation

Test setup	Heat transfer by radiation
Belongs to	Laborytory for Energy and Process Engineering
Academic leadership	NN
Room	D1.10
Laboratory belongs to	Bachelor in Environmental and Process Engineering
Workstations	1
History	Set up in 2011
Tasks and objectives	All bodies with a temperature above absolute temperature zero emit heat by radiation. The energy density of this emitted radiation depends on the temperature and the thermo-optical properties of the surface. This relationship is described by the Stefan-Boltzmann law. By means of various experiments, the students verify the relationships between radiation density and temperature, distance and angle of irradiation. The influence of the thermo-optical properties is studied by using different surfaces. The measuring results are compared with theoretical predictions.
Laboratory equipment	Optical bench for measuring heat radiation with light and heat source Radiation sensor Lesley cube Measuring technology for recording temperature, emitted and received radiation power

Heat transfer by evaporation

Test setup	Heat transfer by evaporation
Belongs to	Laborytory for Energy and Process Engineering
Academic leadership	Prof. Dr.-Ing. Marcus Reppich
Room	D1.10
Laboratory belongs to	Bachelor in Environmental and Process Engineering
Workstations	1
History	2012, modified in 2015.
Tasks and objectives	When a phase change (evaporation or condensation) takes place, large amounts of energy are converted without a change to the temperature of the heat transfer medium. The heat flux density is increased significantly as compared to convection without phase change. The different areas of heat transfer by evaporation are clearly demonstrated to the students, whereby the areas of free convection and bubble boiling of the Nukiyama curve are quantitively recorded and compared with theoretical predictions. Film boiling with subsequent burnout is shown in a demonstration experiment.
Laboratory equipment	Evaporation test setup consisting of Transparent glass cylinder with heating and cooling Electric heater and cooling thermostats Measuring technology for recording heating power and temperature Demonstrator to show film boiling with burnout

Prof. Dr.-Ing. Marcus Reppich
Mechanical and Process Engineering
Phone:	+49 821 5586-3153
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