R&D departmentTest rig inHydac SA

Time schedule Power heat dissipation test rig

Pulsation test rig

VG 320 test rigPaolo *Test rig in Hydac

Power heat dissipation Why this test rigTo measure : POWER HEAT DISSIPATION PRESSURE DROPon liquid/air coolers.Paolo *Test rig in HydacAnalyse our and the competitorscoolers to acquire know-howand win on the market !

Power heat dissipation Technical dataLiquid : mineral oil VG68Flow max : 350 l/minPower max : 120 kWInlet air temperature : ambient temperatureInlet liquid temperature max : 70 CPaolo *Test rig in Hydac

Power heat dissipation Tests following DIN/EN 1048This mean that the accuracy of instruments and the complete system is guaranteed. The variations of values, during a test, are : 0.2 C for temperatures 0.02 bar for pressures 1 % for liquid flow rateto stay in the declared tolerances !The tests are made at : inlet temperature drop = 40 C oil viscosity = 30 mm2/s to declare what we measure !Paolo *Test rig in HydacTV SDDEUTSCHLAND certify that Hydac SAmakes the tests following the norm EN/ISO 1048 !

Power heat dissipation Costs and improvementsA test takes in average 1 day to be done.An operator dedicated at 60 %, the power to heatthe oil and the electricity to run fan, pumps andother elements are not the only cost that we haveto assume. The certification from TV, to calibrate the probes and maintenance have to be summarised to the construction and the new improvemtns.We are looking at an investment to run completely automated tests, to make tests during the night too !Paolo *Test rig in Hydac

PulsationWhy this test rigTo evaluate the matrix of liquid/air coolers in dynamic pressure.NEWPaolo *Test rig in HydacWe start this year to test with this rig.In the past this test was made with external resources. This was a problem because we lost know-how and to have the results we wanted was not always possible.

Pulsation Technical dataLiquid : mineral oil VG22Upper pressure range : 10..30 barFrequency range : 0,1..3 HzAmbient temperature max : 110 CPaolo *Test rig in HydacWe can test 1 big element (EL11) or 3 small (EL3).

Pulsation Tests following ISO/DIS 10771-1In the liquid/air coolers market, the matrix is characterised by tests which follow the norm ISO/DIS 10771-1.Test code : ISO 10771-1-16/0.8 bar-107-2Hz/190ms Means that the test had :pu = 16 barPl = 0.8 barN cycles = 107Frequency = 2 HzT1 (time for p > pu) = 190 msPaolo *Test rig in Hydac

Test resultWhy follow a normIt is important that the data that is declared follows a norm, because otherwise it is impossible to compare values !How can you win against competitors ?Paolo *Test rig in HydacThis is also valid for the power heat dissipation tests.

VG320Why this test rigDuring the integrated bypass project we saw that the viscosity was not sufficient to create the necessary pressure drop in the matrix. Now we are able to see the correct functionality of this particular element. NEWPaolo *Test rig in HydacWe had other requests from the lubrication systems and wind turbine gear box market: to test with a synthetic and high viscosity oil.

VG320 Technical dataLiquid : mobilgear oil VG320 (sinthetic)Pressure max : 20 barFlow rate max : 170 l/minHeat power : 4 kWCooling power : 30 kWPaolo *Test rig in Hydac