EXPERIMENT ON NOTHING

Topics: Measurement, Test method, Metrology Pages: 42 (14874 words) Published: April 16, 2014
constant speed AC motor, while the HP stage is driven by a variable speed DC motor. This feature allows variation of the intermediate pressure. Each stage is provided with its own dynamometer.

At compressor's inlet there is an airbox with a sharp-edged orifice for flow measurement. An intercooler is provided between the two stages, and an intercooler between the second stage and the pressure vessel. Connected to the pressure vessel is an exhaust pipe with a throttling valve and a calibrated flow nozzle for additional flow measure¬ment. If testing of the LP stage only is required the HP stage can be shut down completely. The test rig is fully equipped with measuring instruments like thermometers, pres¬sure gauges, inclined U-tube manometers, tachometers, etc. The technical data of the test rig are as follows: constant speed AC motor, while the HP stage is driven by a variable speed DC motor. This feature allows variation of the intermediate pressure. Each stage is provided with its own dynamometer.

At compressor's inlet there is an airbox with a sharp-edged orifice for flow measurement. An intercooler is provided between the two stages, and an intercooler between the second stage and the pressure vessel. Connected to the pressure vessel is an exhaust pipe with a throttling valve and a calibrated flow nozzle for additional flow measure¬ment. If testing of the LP stage only is required the HP stage can be shut down completely. The test rig is fully equipped with measuring instruments like thermometers, pres¬sure gauges, inclined U-tube manometers, tachometers, etc. The technical data of the test rig are as follows: constant speed AC motor, while the HP stage is driven by a variable speed DC motor. This feature allows variation of the intermediate pressure. Each stage is provided with its own dynamometer.

At compressor's inlet there is an airbox with a sharp-edged orifice for flow measurement. An intercooler is provided between the two stages, and an intercooler between the second stage and the pressure vessel. Connected to the pressure vessel is an exhaust pipe with a throttling valve and a calibrated flow nozzle for additional flow measure¬ment. If testing of the LP stage only is required the HP stage can be shut down completely. The test rig is fully equipped with measuring instruments like thermometers, pres¬sure gauges, inclined U-tube manometers, tachometers, etc. The technical data of the test rig are as follows:

constant speed AC motor, while the HP stage is driven by a variable speed DC motor. This feature allows variation of the intermediate pressure. Each stage is provided with its own dynamometer.

At compressor's inlet there is an airbox with a sharp-edged orifice for flow measurement. An intercooler is provided between the two stages, and an intercooler between the second stage and the pressure vessel. Connected to the pressure vessel is an exhaust pipe with a throttling valve and a calibrated flow nozzle for additional flow measure¬ment. If testing of the LP stage only is required the HP stage can be shut down completely. The test rig is fully equipped with measuring instruments like thermometers, pres¬sure gauges, inclined U-tube manometers, tachometers, etc. The technical data of the test rig are as follows:

constant speed AC motor, while the HP stage is driven by a variable speed DC motor. This feature allows variation of the intermediate pressure. Each stage is provided with its own dynamometer.

At compressor's inlet there is an airbox with a sharp-edged orifice for flow measurement. An intercooler is provided between the two stages, and an intercooler between the second stage and the pressure vessel. Connected to the pressure vessel is an exhaust pipe with a throttling valve and a calibrated flow nozzle for additional flow measure¬ment. If testing of the LP stage only is required the HP stage can be shut down completely. The test rig is fully equipped with measuring instruments like...
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