Capacity testing facilities for components

Test chamber for cooling and a/c units and heat pumps

Possible researches:

air conditioning unit operation at environmental temperatures up to 60 °C
heat pump operation down to -20 °C
air conditioning of rail vehicles and buses
performance analysis in complete systems
cooling and dehumidification capacity
fresh and recirculating air can be conditioned separately
solar radiation simulation
dynamic measurements
energy efficiency
heating capacity

Fig. 1

Test chamber for cooling and a/c units and heatpumps

Fig. 2

Measuring station of the test chamber

Fig. 3

Evaporator for cooling of chamber’s inside

Fig. 4

Cooling unit of test chamber

Test bench for full automotive a/c systems

Possible researches:

measuring of full systems or single components of automotive a/c systems
measuring of cooling and heating capacity
in-frame measuring of evaporator and condenser
measuring of gas coolers
a/c and heat pump running, components for cycle reversion
performance balancing on the refrigerant and air side
electrical powered and belt-driven compressors
refrigerants: R134a, R1234yf, R744, …
continuous oil concentration measurements, oil retention
thermographic analysis of temperature distribution

Fig. 1

Test bench for automotive a/c systems

Fig. 2

Evaporator and condenser channel

Fig. 3

Air conditioning for condenser channel

Fig. 4

Measuring cabinet of one of our test benches

Long-term test bench for compressors and systems

Possible researches:

long-term durability measuring of compressors according to VDA or customer specific guidelines
construction in a conditionable soundproof cabin
environmental temperature of compressor controllable
performance analysis of electrical powered and belt-driven compressors
flexible choice of refrigerant
performance balancing on the refrigerant and air side

Fig. 1

Long-term test bench for compressors and systems

Fig. 2

Inside of long-term test bench

Fig. 3

Conditioning of compressor environment

Fig. 4

Measuring station and switchboards

Test bench for components of automotive a/c systems

Possible researches:

performance analysis of battery cooling units
valve examination (TXV, EXV)
performance analysis of internal heat exchangers (IHX)
measurement of pressure loss
refrigerant: R134a, R1234yf, …
adjustable oil concentration

Fig. 1

Test bench for automotive a/c components

Fig. 2

Measuring station of components test bench

Fig. 3

Calorimeter and cooling unit

Test benches for automotive refrigerant compressors

Possible researches:

belt-driven and electrical powered automotive compressors
evaluation of performance map
measurement of cooling capacity via calorimeters and refrigeration cycle
refrigerants: R134a, R1234yf, R513A, R404A, R410A, …
adjustable oil concentration
long-term durability measuring of compressors according to VDA or customer specific guidelines
adjustable environment of compressor

Fig. 1

Test bench 1 for automotive refrigerant

Fig. 2

Measuring station of compressor test bench

Fig. 3

Switchboard of test bench

Fig. 4

Test bench 2 for automotive refrigerant compressors

Test bench for components suitable for R744 (CO₂)

Possible researches:

analysis of IHX, accumulators and combination of both
transmission capacity and degree of exchange of IHX
R744-chillers
plateau of filling amount
oil recirculation
separation efficiency
pressure loss

Fig. 1

Test bench for components suited for R744

Fig. 2

Measuring station and control panel of test bench

Calibration of oil flow measuring methods

Possible researches:

calibration of sensors for continuous oil flow measuring
sensors: sound velocity, density, refractive index
refrigerant: R134a, R1234yf, R410A, R744, R513A, …
oil varieties: PAG, POE, PAO
miscibility gap

Fig. 1

Calibration rig for measuring devices for oil circulation

Fig. 2

Oil concentration measuring via sound velocity sensors

Fig. 3

Sound velocity at various oil concentrations

Custom test benches

Possible researches:

pressure change examination
long-term durability test of pumps
validation of valves
thermal simulation test bench for control development
component examination under high and low environmental temperatures
performance analysis of battery cooling units and compact a/c units
pressure loss measurement of piping components

Fig. 1

Temperature chamber for component examination

Fig. 2

Environmental conditions simulation reaching from -40 °C up to 160 °C

Fig. 3

Thermal simulation test bench for control development

Fig. 3

Performance test bench for compact a/c units

Capacity testing facilities for components

Test chamber for cooling and a/c units and heat pumps

Test bench for full automotive a/c systems

Long-term test bench for compressors and systems

Test bench for components of automotive a/c systems

Test benches for automotive refrigerant compressors

Test bench for components suitable for R744 (CO2)

Calibration of oil flow measuring methods

Custom test benches

Further information

Test bench for components suitable for R744 (CO₂)