Difference between revisions of "Team:Sherbrooke/Experiments"
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| + | A <a href="#MC96 Thermal Experimentations">thermal experimentation </a>have been the only experimentation done on the <i>MC96</i> module. | ||
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| + | <a href="#MC1.5 Thermal Experimentations">Thermal</a> and <a href="#MC1.5 Magnetisation Experimentations">magnetisation</a> experimentation have been conduct to validate | ||
| + | the design of the <i>MC1.5</i> module. | ||
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<a href="#MC1.5 Thermal Experimentations Protocols">Back to MC1.5 Thermal Experimentations Protocols</a> | <a href="#MC1.5 Thermal Experimentations Protocols">Back to MC1.5 Thermal Experimentations Protocols</a> | ||
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| + | <a href="#MC1.5 Thermal Experimentations">Back to MC1.5 Thermal Experimentations</a> | ||
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<li>Note the timestamp on the chronometer</li> | <li>Note the timestamp on the chronometer</li> | ||
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Revision as of 13:50, 12 September 2015
Experiments & Protocols
Projects modules
MC96
A thermal experimentation have been the only experimentation done on the MC96 module.
Thermal experimentations
The only experimentations done are simulations because no prototype has been built yet.
Simulation
Thermal simulations have been done on the software COMSOL. These simulations have been used to verify the heat transfer of the aluminium mold of the modules, thus helping us improve their design. For the MC96, some simulation has been done on early design, but none on the final design, due to the impossibility to simulate heat pipes.
Simulation parameters
| Parameters | Values |
|---|---|
| Peltier element cooling power | 120W |
| Peltier element heating power | 500W |
| Air convective heat transfer coefficient | 50W/(m2 ℃) |
| Isolation conductive heat transfer coefficient | 5W/(m ℃) |
| Aluminium type | 6061-t6 |
| Aluminium conductive heat transfer coefficient | 167W/(m ℃) |
| Aluminium specific heat capacity | 0.896J/(g ℃) |
MC1.5
Thermal and magnetisation experimentation have been conduct to validate the design of the MC1.5 module.
Thermal experimentation
Simulation
Simulation parameters
| Parameters | Values |
|---|---|
| Peltier element cooling power | 60W |
| Peltier element heating power | 250W |
| Air convective heat transfer coefficient | 50W/(m2 ℃) |
| Isolation conductive heat transfer coefficient | 5W/(m ℃) |
| Aluminium type | 6061-t6 |
| Aluminium conductive heat transfer coefficient | 167W/(m ℃) |
| Aluminium specific heat capacity | 0.896J/(g ℃) |
Trials protocols
These are the protocol used to test the thermal characteristic of the MC1.5 prototype. These protocols have been tested on a single sub-module of a MC1.5 .
Thermal Experimentations Protocols
- Maintaining a temperature below room temperature test
- Maintaining a temperature over room temperature test
- Cooling speed test
- Heating speed test
Maintaining a temperature below room temperature test
PurposeDetermine if the module temperature stability fits the specified of ±1.5℃, when the set temperature is below room temperature. Also, this test determines the voltage versus the set temperature relation.
Material- MC1.5 sub-module
- High current power supply (bk precision 1694 power supply)
- Power supply (Topward 6303D)
- Electronic thermometer (Fluke 51K/J thermometer)
- Connect the power supply (Topward 6303D) to the fan
- Power up the power supply and adjust the voltage to 12V
- Connect the high current power supply (bk precision 1694 power supply) to the Peltier element (PS vcc to Peltier gnd and PS gnd to Peltier vcc)
- Set the thermocouple probe at the bottom of the middle hole of the aluminium mold
- Wait for the thermometer measure to stabilize for 20 second
- Set the voltage of the high current power supply to 1V
- Wait for thermometer measure to stabilize for at least 20 second
- Note the thermometer measure and the voltage associated with it
- Repeats set 1, 2 and 3 and increased the voltage by 1V each time until the thermometer measure is below the specified lower limit (0℃)
- Stop the high current power supply
- Stop the fan power supply
Maintaining a temperature over room temperature test
PurposeDetermine if the module temperature stability fits the specification of ±1.5℃, when the set temperature is over room temperature. Also, this test determines the voltage versus the set temperature relation.
Material- MC1.5 sub-module
- High current power supply (bk precision 1694 power supply)
- Power supply (Topward 6303D)
- Electronic thermometer (Fluke 51K/J thermometer)
- Connect the power supply (Topward 6303D) to the fan
- Power up the power supply and adjust the voltage to 12V
- Connect the high current power supply (bk precision 1694 power supply) to the Peltier element (PS vcc to Peltier vcc and PS gnd to Peltier gnd)
- Set the thermocouple probe at the bottom of the middle hole of the aluminium mold
- Wait for the thermometer measure to stabilize for 20 second
- Set the voltage of the high current power supply to 1V
- Wait for thermometer measure to stabilize for at least 20 second
- Note the thermometer measure and the voltage associated with it
- Repeats set 1, 2 and 3 and increased the voltage by 1V each time until the thermometer measure is over the specified upper limit (80℃)
- Stop the high current power supply
- Stop the fan power supply
Cooling speed test
PurposeDetermine if the module cooling speed fits the specification of 0.5 to 1℃/s. Also, this test determines the optimal voltage to apply to cool the aluminium mold.
Material- MC1.5 sub-module
- High current power supply (bk precision 1694 power supply)
- Power supply (Topward 6303D)
- Electronic thermometer (Fluke 51K/J thermometer)
- Chronometer
- Connect the power supply (Topward 6303D) to the fan
- Power up the power supply and adjust the voltage to 12V
- Connect the high current power supply (bk precision 1694 power supply) to the Peltier element (PS vcc to Peltier vcc and PS gnd to Peltier gnd)
- Set the thermocouple probe at the bottom of the middle hole of the aluminium mold
- Set the voltage of the high current power supply to reach 85℃
- Wait for thermometer measure to stabilize for at least 20 second
- Stop the high current power supply
- Invert connection between the Peltier element and the high current power supply
- Set the high current power supply to 15.5V (calculated by this method)
- Start the chronometer when the thermometer measure reach 80℃
- For each 10℃ temperature drop, note the timestamp until 0℃ is reached
- Stop the high current power supply
- Invert connection between the Peltier element and the high current power supply
- Repeats step 1 to 9 for cooling voltage of 15V and 16V
Theoretical method to determine the optimised cooling voltage
Back to MC1.5 Thermal Experimentations ProtocolsHeating speed test
PurposeDetermine if the module heating speed fits the specified 0.5 to 1℃/s.
Material- MC1.5 sub-module
- High current power supply (bk precision 1694 power supply)
- Power supply (Topward 6303D)
- Electronic thermometer (Fluke 51K/J thermometer)
- Chronometer
- Connect the power supply (Topward 6303D) to the fan
- Power up the power supply and adjust the voltage to 12V
- Connect the high current power supply (bk precision 1694 power supply) to the Peltier element (PS vcc to Peltier gnd and PS gnd to Peltier vcc)
- Set the thermocouple probe at the bottom of the middle hole of the aluminium mold
- Set the voltage of the high current power supply to reach -5℃
- Wait for thermometer measure to stabilize for at least 20 second
- Stop the high current power supply
- Invert connection between the Peltier element and the high current power supply
- Set the high current power supply to 24V (Maximal voltage available for the Peltier element)
- Start the chronometer when the thermometer measure reach 0℃
- For each 10℃ temperature rise, note the timestamp until 80℃ is reached
- Stop the high current power supply
Magnetisation experimentations
Applying an electromagnetic field on the test tube liquid is one of the key functionality of the MC1.5. This experiment was conduct in order to confirm that the neodymium magnets are powerful enough.
Protocol
PurposeDetermine if the neodymium magnets are powerful enough to attract the microscopic magnetic beads on the side of the test tube within 2 minutes.
Material- 1.5 ml test tube with liquid and magnetic beads inside
- Neodymium magnet (Type N42)
- Metric Ruler
- Chronometer
- Agitate the 1.5ml test tube to ensure that the magnetic beads are spreads through the liquid
- Place the 1.5ml test tube at the end of the ruler
- Place the center of the magnet in the same relative position as in the MC1.5 module (5mm from the bottom of the test tube and 4mm from the side of the test tube)
- As soon as the magnet is in position, start the chronometer
- Stop the chronometer when the liquid has the same transparency as distilled water
- Note the timestamp on the chronometer