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VIII-III Which is the most effective plate in heat convection among the three plates used in this experiment(OGU? Justify your answer Your answer VIII-IV Discuss the errors and their sources which might occurred in this experiment and affected its results. Your answer

VIII-III Which is the most effective plate in heat convection among the three plates used in this experiment(OGU? Justify your answer Your answer VIII-IV Discuss the errors and their sources which might occurred in this experiment and affected its results. Your answer

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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FROCLDUAL The same procedure is applicable for the three types of plates; flat, pinned and finned. 11 of 12 · Ensure that the main switch of the instrument console is in the off position, and the fan is switched of. • 1. Open the toggle clamps, place the required plate to be studied (flat, pinned or finned), and close the toggle clamps. Note that the power leads exit from the top of the plates. PROCEDURE Note that the flat plate will have the minimum blockage of airflow in the duct, whereas the maximum air resistance will occur with the pinned. plate, which means that if you may not attain the pinned same velocity in the pinned plate as the flat one, which makes the results of comparison non- Flat logical. Thus, it may be a good idea to start with the pinned plate, then the rest of plates can be studied under similar achievable air flow conditions. PROCEDURE • 2. Switch on the main switch (1), and set the air velocity of a low value by closing the air throttle (9). • 3. Increase the heater power to about 220V, such that the heater temperature Tl does not exceed 100°C. Allow the temperatures to stabilize, then record T1, heater supply voltage V, heater current I and air velocity U. PROCEDURE • 4. Maintain the heater voltage at the same conditions, and increase the air velocity using the air throttle (9), allow the temperatures to stabilize and record the data. If necessary repeat the procedure again increasing the air flow. • 5. For direct comparison, repeat the procedure for the three plates under similar heat input conditions and similar air flow velocities.
Transcribed Image Text:FROCLDUAL The same procedure is applicable for the three types of plates; flat, pinned and finned. 11 of 12 · Ensure that the main switch of the instrument console is in the off position, and the fan is switched of. • 1. Open the toggle clamps, place the required plate to be studied (flat, pinned or finned), and close the toggle clamps. Note that the power leads exit from the top of the plates. PROCEDURE Note that the flat plate will have the minimum blockage of airflow in the duct, whereas the maximum air resistance will occur with the pinned. plate, which means that if you may not attain the pinned same velocity in the pinned plate as the flat one, which makes the results of comparison non- Flat logical. Thus, it may be a good idea to start with the pinned plate, then the rest of plates can be studied under similar achievable air flow conditions. PROCEDURE • 2. Switch on the main switch (1), and set the air velocity of a low value by closing the air throttle (9). • 3. Increase the heater power to about 220V, such that the heater temperature Tl does not exceed 100°C. Allow the temperatures to stabilize, then record T1, heater supply voltage V, heater current I and air velocity U. PROCEDURE • 4. Maintain the heater voltage at the same conditions, and increase the air velocity using the air throttle (9), allow the temperatures to stabilize and record the data. If necessary repeat the procedure again increasing the air flow. • 5. For direct comparison, repeat the procedure for the three plates under similar heat input conditions and similar air flow velocities.
VIII-III Which is the most effective plate in heat convection among the three plates used in this experiment( OO Justify your answer Your answer VIII-IV Discuss the errors and their sources which might occurred in this experiment and affected its results. Your answer
Transcribed Image Text:VIII-III Which is the most effective plate in heat convection among the three plates used in this experiment( OO Justify your answer Your answer VIII-IV Discuss the errors and their sources which might occurred in this experiment and affected its results. Your answer
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