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demonstrations:4_thermodynamics:4f_entropy_and_the_second_law:stirling_engine_-_low_temperature:start
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demonstrations:4_thermodynamics:4f_entropy_and_the_second_law:stirling_engine_-_low_temperature:start [2019/02/14 23:33] 127.0.0.1 external edit |
demonstrations:4_thermodynamics:4f_entropy_and_the_second_law:stirling_engine_-_low_temperature:start [2020/03/13 21:01] (current) demoroom |
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| ====== Stirling Engine - Low Temperature ====== | ====== Stirling Engine - Low Temperature ====== | ||
| - | {{tag> needs_review untagged unlocated}} | + | {{tag>heat thermodynamics stirling heat_engine located}} |
| <WRAP box right> | <WRAP box right> | ||
| Line 11: | Line 11: | ||
| ===== Description ===== | ===== Description ===== | ||
| - | A low temperature differential Stirling engine which can be used with the Vernier sensors to demonstrate its working concepts. Classes Used: PHYS 153 | + | A low temperature differential Stirling engine which can be run on a cup of coffee. Has an attachment point for a pressure sensor and a displacement sensor mounted, so it can be used to generate P-V diagrams. |
| - | + | ||
| - | + | ||
| - | Entropy, Energy Conversion, Newton's second law, Stirling Cycle | + | |
| - | + | ||
| - | Useful Links: | + | |
| - | + | ||
| - | + | ||
| ===== Purpose ===== | ===== Purpose ===== | ||
| - | + | Demonstrate the Stirling engine and cycle, display P-V diagrams, demonstrate how the power output may be calculated. | |
| - | Demonstrate the Stirling engine and cycle, display P-V diagrams, calculate power output. | + | |
| - | + | ||
| - | Items Needed: | + | |
| - | - Low Temperature Differential Stirling Engine | + | |
| - | - Styrofoam cup or beaker with steaming water (brought to almost boiling point) | + | |
| - | - Vernier Module | + | |
| - | - 5V voltage source and leads | + | |
| - | - Gas Pressure Sensor | + | |
| - | - Differential Voltage Meter | + | |
| - | - Logger Pro Program | + | |
| - | + | ||
| - | Procedure: | + | |
| - | + | ||
| - | __Stirling engine: __ | + | |
| - | 1. Place the Stirling engine on top of the cup of boiling water | + | |
| - | 2. Give it some time to heat up (It runs of a temperature difference) | + | |
| - | 3. Start the engine with your hand (As far as I can tell it only runs one direction so figure out which one) | + | |
| - | 4. | + | |
| ===== Apparatus ===== | ===== Apparatus ===== | ||
| + | Included in box: | ||
| + | * Low Temperature Differential Stirling Engine | ||
| + | * Styrofoam cup | ||
| + | * Vernier Module | ||
| + | * 5V voltage source and leads | ||
| + | * Gas Pressure Sensor | ||
| + | * Differential Voltage Meter | ||
| + | Elsewhere: | ||
| + | * Hot water | ||
| + | * Computer with LoggerPro installed | ||
| ===== Setup ===== | ===== Setup ===== | ||
| + | - (Optional) Attach the sensors and leads for the LoggerPro sensors, as described below. | ||
| + | - Fill the styrofoam cup with boiling-hot water and place the Stirling engine on top. | ||
| + | - Allow some time for the engine to heat up. | ||
| + | - Start the engine by hand. (Note that the engine will only run in one direction. Try pushing it both ways and you'll notice more resistance in one direction than the other as it heats up.) | ||
| ===== Notes ===== | ===== Notes ===== | ||
| - | If you are running it without the pressure sensor you need to have the value CLOSED, if you want to run it with the pressure sensor have the valve OPEN | + | If you are running it without the pressure sensor you need to have the value **closed**, if you want to run it with the pressure sensor have the valve **open**. |
| - | __ Setting up Logger Pro__ | + | ==== LoggerPro setup: ==== |
| - | 1. Connect the circular end of the pressure sensor to the valve on the engine | + | - Connect the circular end of the pressure sensor to the valve on the engine |
| - | 2. Connect the differential voltage sensor to the black and white leads and then plug it into the slots above the label marked "sensor" | + | - Connect the differential voltage sensor to the black and white leads and then plug it into the corresponding slots above the label marked "sensor". The polarity is noted on the device, make sure the side with the black wire is plugged into the ground. |
| - | 3. Use a multi-meter to check that the voltage coming out of the power source is ~5V. (if it is not then the 9V inside has died, unscrew the top and replace the 9V battery (Be careful not to short any of the wires, this is easy to do)) | + | - Use a multi-meter to check that the voltage coming out of the power source is ~5V. (If it is not then the 9V inside has died, unscrew the top and replace the 9V battery (Be careful not to short any of the wires, this is easy to do)) |
| + | - Plug the power supply into the slots above the label marked "Power". Again, make sure the side with the black wire is plugged into the ground. | ||
| + | - Check that the mirror is horizontal and correctly aligned with the IR sensor on the perfboard. | ||
| Line 77: | Line 65: | ||
| </WRAP> | </WRAP> | ||
| <WRAP tablewidth 100%> | <WRAP tablewidth 100%> | ||
| - | | **Location** | ---- | | + | | **Location** | C3 | |
| | **Maker** | Unknown | | | **Maker** | Unknown | | ||
| | **Current State** | Working | | | **Current State** | Working | | ||
demonstrations/4_thermodynamics/4f_entropy_and_the_second_law/stirling_engine_-_low_temperature/start.1550187203.txt.gz · Last modified: 2019/02/14 23:33 by 127.0.0.1
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