ESC Testing with a Small Container of Iced Cooling Water
Inspired by the degree of ESC cooling using a large, quart picture of iced water I wanted to know just “How Low Could You Go?”
Let me describe the test set-up, again an apples-to-apples comparison done at the same power levels, same motor, same ESC, same ambient temperature, same music playing, etc.
First test is where we left off from the previous post. I am using the small copper plate with two edge-cooling tubes that I built. First 6 minute test is without water, i.e.: NO WATER FLOW. You can see how the ESC FET temperature increases aver the 6-minute test interval.
Immediately at the end of the 6-minute test I turned by small pump that now sucked ice water from a very small 25-cent Tupperware container. I included a picture to show you the tiny size of this ice water container. The amount and degree of ESC FET cooling was amazing! Here are the results:
First with NO WATER flow and the small plate heat sink with two copper edge tubes.
Time 0 30 sec 1 min 2 min 3 min 4 min 5 min 6 min
78.9F 81.9F 84.7F 90.1F 85.7F 100.6F 104.6F 109.1F
NOW, let me immediately turn on the 12 VDC micro pump and supply cooling from the very small container of ice water.
Time 0 30 sec 1 min 2 min 3 min 4 min 5 min 6 min
109.1F 88.3F 79.6F 70.3F 66.2F 64.9F 64.9F 63.9F
Is there any doubt now that cold water-cooling REALLY works?
Are we now in the Golden Bubble of ESC cooling? Unfortunately NOT. During the testing I put a thermistor in the caps. The temperature of the Caps continued to rise throughout the two tests, even with water cooling (remember the water cooling is designed for FET cooling). The temp of the caps went from 77F at the start of the tests to 107F at the end of the second test. Something to think about.
Motor is cool, but remember the test is only at 75 watts!
Inspired by the degree of ESC cooling using a large, quart picture of iced water I wanted to know just “How Low Could You Go?”
Let me describe the test set-up, again an apples-to-apples comparison done at the same power levels, same motor, same ESC, same ambient temperature, same music playing, etc.
First test is where we left off from the previous post. I am using the small copper plate with two edge-cooling tubes that I built. First 6 minute test is without water, i.e.: NO WATER FLOW. You can see how the ESC FET temperature increases aver the 6-minute test interval.
Immediately at the end of the 6-minute test I turned by small pump that now sucked ice water from a very small 25-cent Tupperware container. I included a picture to show you the tiny size of this ice water container. The amount and degree of ESC FET cooling was amazing! Here are the results:
First with NO WATER flow and the small plate heat sink with two copper edge tubes.
Time 0 30 sec 1 min 2 min 3 min 4 min 5 min 6 min
78.9F 81.9F 84.7F 90.1F 85.7F 100.6F 104.6F 109.1F
NOW, let me immediately turn on the 12 VDC micro pump and supply cooling from the very small container of ice water.
Time 0 30 sec 1 min 2 min 3 min 4 min 5 min 6 min
109.1F 88.3F 79.6F 70.3F 66.2F 64.9F 64.9F 63.9F
Is there any doubt now that cold water-cooling REALLY works?
Are we now in the Golden Bubble of ESC cooling? Unfortunately NOT. During the testing I put a thermistor in the caps. The temperature of the Caps continued to rise throughout the two tests, even with water cooling (remember the water cooling is designed for FET cooling). The temp of the caps went from 77F at the start of the tests to 107F at the end of the second test. Something to think about.
Motor is cool, but remember the test is only at 75 watts!
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