PG25高速侵蚀试验.pdf

1、Cheng Chen-METACosimo Pecchioli BP CastrolPG25 High Velocity TestPG25 High Velocity TestCheng Chen-METACosimo Pecchioli BP CastrolCOOLING ENVIRONMENTS&LIQUID COOLINGCOOLING ENVIRONMENTS&LIQUID COOLINGPremiseASHRAE has long recommended a maximum liquid velocity of 1.5 m/s in piping systems to minimiz

2、e the risk of erosion.While this standard has served the industry well,it is increasingly becoming a limiting factor in thermal system design,particularly as heat loads continue to rise.To address higher thermal design power(TDP)requirements,system designers face two primary options:reduce the coola

3、nt temperatureor increase the flow rate by raising fluid velocity.From an energy efficiency standpoint,lowering coolant temperatures is significantly more energy intensive.Consequently,increasing flow rate by elevating fluid velocity is the more favorable approach.Recognizing this challenge,the Open

4、 Compute Project(OCP)Cooling Environment Project,in collaboration with bp/Castrol,initiated a practical investigation into pipe erosion rates at elevated liquid velocities across various materials using Castrol ON Direct Liquid Cooling PG 25 coolant.COOLING ENVIRONMENTS&LIQUID COOLINGVelocities and

5、MaterialsThe study explores the impact of the following velocities(in green completed,in black to be completed):Velocities Tested:6.0 m/s3.0 m/s4.5 m/sMaterials Tested(1-inch pipe diameter):Copper(C12200 and C12000)Stainless Steel(304)EPDM(Parker 807 EPDM)COOLING ENVIRONMENTS&LIQUID COOLINGHow the t

6、est was conductedThe temperature was kept at XX CErosion was measured during the test using hand held ultrasonic readerAt the end of the test the rig was cut and visually inspectedDifferent kind of joints were selected to simulate real inst