Cooling & Heat Exchange KPV Series Cooler Bellhousings 138 Cooler bellhousing VDMA compatible, resistant to pressure peaks. The first cooler bellhousings on the market were usually fitted with finned tubes, which act as heat exchangers. However, due to the poor thermal design were only deemed suitable for leakage cooling. The high efficiency of the prismatic cooling element gives real possibilities for increased performance and also lends itself to full flow cooling as per the attached diagrams. Care must be taken when applied to low pressure return lines as often the operation of the system will generate pressure spikes which cannot generally be detected with conventional pressure measuring gauges. To combat this, R+L have extensively dynamically fatigue tested the prismatic element for over a million stress cycles from 0 – 16 bar at a constant frequency of 2 Hz. 6 As a rule, 1 x 10 stress cycles will be considered sufficient. However, since the number of pressure peaks per time period can be extremely variable in isolated cases, 6 6 it is difficult to determine which service life 10 stress cycles correspond to. Considering this, testing has been extended to 3.5 x 10 stress cycles. In all cases, test results have been satisfactory. In addition to this, each single heat exchanger has been tested at 40 bar during production, this is equivalent to the highest authorised static pressure for cooling elements. Also, great attention has been paid to protecting the cooling element against external damage by embedding it within a sturdy housing on the KPV cooler. Dynamic fatigue strain tests with cooling elements for the KPV series at 16 bars with 1 x 106 stress cycles and f = 2 Hz 0 0 10 1 2 3 4 5 20 30 40 10 5 Input 1bar sec H1 1H B2 B1 L 1H cooled damped rigid Cooler bellhousing, KPV series Interchangeability of configurations rigid, damped, cooled acc. to VDMA 24 #DriveLineHarmony www.jbj.co.uk/cooling-heatexchange.html
RkJQdWJsaXNoZXIy NzQyNjQ=