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  - Here you may find information on our remote learning concept, new products on the fundamentals of fluid mechanics and the fundamentals of heat transfer and our location at trade fairs/exhibitions.
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Solar cooling

Solar cooling means a process in which the cooling process is powered directly by solar energy. Solar energy thus serves as a regenerative source of energy.

Solar cooling (basic knowledge)

Using solar energy for cooling (poster)

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ET 256

Cooling with solar electricity

Compression refrigeration system for operation with solar current from ET 250

Learning objectives/experiments

supply a compression refrigeration system with current from photovoltaic modules
components of a photovoltaic refrigerating plant
operation of the compressor with changing power available and cooling demand
charge and discharge cold accumulators
coefficient of performance of the refrigerating plant dependent on operating conditions
….

ET 352

Vapour jet compressor in refrigeration

Cold production using thermal energy. Transparent condenser and evaporator allow the view into the inner workings.

Learning objectives/experiments

understanding compression refrigeration systems based on the vapour jet method
clockwise and anticlockwise Rankine cycle
energy balances
calculation of the coefficient of performance of the refrigeration circuit
thermodynamic cycle in the log p-h diagram
….

ET 352.01

Solar heat for refrigeration

Solar thermal operation of a vapour jet compressor

Learning objectives/experiments

use of solar heat for refrigeration
components of solar refrigerating plants according to the vapour jet method
operation of a vapour jet compressor on a solar thermal flat collector
optimisation of the operating point
energy balances
….

HL 313

Domestic water heating with flat collector

Demonstration of the conversion of the sun’s radiation energy into heat and the storing of that heat

Learning objectives/experiments

familiarisation with the functions of the flat collector and the solar circuit
determining the net power
relationship between flow and net power
determining the collector efficiency
relationship between temperature difference (collector/environment) and collector efficiency