SNDC, the company
Test Resources
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SNDC has test facilities for the validation of the efficiency of its air-conditioning and heating systems.
HVAC Tests
The SNDC HAVC test room can accommodate agricultural equipment, construction machinery and large vehicles for performance testing in accordance with applicable standards and the customer's specifications.
The test room can replicate outside temperatures of over 55°C as well as sunshine conditions of any geographical area on Earth. The hygrometry inside the cabin can also be monitored during the test sequence.
Heating
and Defrosting
The efficiency of the heating system and the speed and quality of the window’s defrosting can be checked in another test room that replicates negative temperatures up to -35°C.
The tests are carried out on the cab fitted with the heating system and coupled to a thermal generator which supplies coolant fluid from the vehicle’s engine and reproduces its temperature rise curve.
Thermography
Thermographic measurements in the cabin are used to take into account external specific heat sources in the thermal modelling. One possible case is when a wall is heated up by the vehicle's engine compartment and acts as a heat source in the cabin.
A thermographic analysis of the cab detects thermal bridges, heat leaks and miscellaneous insulation defects. SNDC issues suggestions to improve the cabin insulation, thereby helping to optimise the dimensioning of the HVAC system and to reduce both its power consumption and its cost.
Qualification of components
SNDC uses a climatic chamber to qualify, at extreme temperatures, air-conditioning system components.
It can accommodate large components (up to 1.1 m x 90 cm x 94 cm), covers a temperature range of -30°C to +180°C and can perform functional tests.
