What did learn about the equipment or technique

Assignment Help Other Engineering

Reference no: EM133437820

Objectives

To safely start-up and operate the Plint & Partners Compressor Test Stand TE5110.125. To determine and plot the relationship between pressure ratio, power, and mass flow rate of a centrifugal compressor.126. Describe how and on what principle a centrifugal compressor works.127. Describe the lubrication needed for centrifugal compressors.128. To monitor and prevent equipment from surging.

Apparatus

? Plint & Partners Compressor Test Stand TE5110? Portable TachometerNote: Hearing protection is required for all persons in the area at all times while operating the compressor.

Procedure

? Prior to performing the operating procedure, complete the oil level check as per the procedure attached to the side of the apparatus.129. Make sure the oil level in the compressor is at the correct level and the Wattmeter is switched off.130. Start the oil pump (red switch labeled "control").131. Set the discharge valve at 5.132. Set the inlet valve at 10 (open).133. Adjust the motor so it is as close as possible to the compressor by turning the hand crank.134. Start up the compressor.135. Adjust speed to maximum by cranking the motor away from the compressor until it hits the stop on the rails. Note: There will be a distinct sound change as the compressor begins to work.136. Open discharge valve to position 7. Wait two (2) minutes for conditions to stabilize and take readings of inlet and outlet air temperatures, pressures, and power.? Inlet nozzle vacuum (mbar)? Comp. inlet vacuum (mbar)? Comp. outlet pressure (mbar)? Power (kW)? Inlet air temperature (°C)? Outlet air temperature (°C)? Compressor speed with tachometer? Tachometer operation: press and hold the large grey button. Aim red pointer light at the motor shaft (hold tachometer at least 6" from the shaft) and adjust to obtain the best reading. To turn tachometer off, press the up/down arrow buttons simultaneously.137. Repeat steps 8 and 9 for discharge valve, position settings of 6, 5 and 4. Be careful not to operate compressor in surge conditions, which would likely occur between valve settings of 1 to 2. Surge is indicated by erratic noise level and pressure gauge needle fluctuations.138. Open the discharge valve to 5.139. Turn off compressor motor by depressing the stop button.140. Turn off oil pump.141. Lock out the Wattmeter.

Data

? The airflow through the compressor is measured by a nozzle of ISA form located on the suction side of the compressor. The mass flow rate is related to the square root of the differential pressure across the nozzle. This nozzle differential can be obtained by subtracting the absolute nozzle inlet pressure from the absolute compressor inlet pressure. Note also that the pressure readings in the lab are gauge pressures and that atmospheric pressure in millibar is 1013 mbar. All pressures must be converted to absolute for calculations.? To study the compressor, construct the following graphs:1. Plot pressure ration (Y axis) versus square root of flow nozzle differential pressure (X axis).Pressure ratio:2. Plot power (kW) versus square root of flow nozzle differential pressure.3. Plot outlet temperature versus square root of flow nozzle differential pressure.? In each case, the square root of the flow nozzle differential pressure is related to, but not equal to, the flow through the compressor. Thus, there will be no unit associated with that value. The lab is just investigating trends and relationships only.

Discussion

1. how results agree with applicable theory?

2. How data support this?3. How calculations support this?

4. What did learn about the equipment or technique?

5. What problems were encountered? Any suggestions for improvement?

6. What are the major and minor sources of error in your results?

7. How could this equipment or technique be applied in Industry?

8. Give any advantages or disadvantages of this equipment or technique.

Reference no: EM133437820

Questions Cloud

Assume for this purpose that apportioning : where do you stand on this? Assume for this purpose that apportioning some of the $5 million to each approach is not a viable option - you'll need to go with

Lean equipment submitted by four suppliers : You need to select an offer to buy a machine based on your idea for right sized or lean equipment submitted by four suppliers

How much money the city should deposit : How much money the city should deposit in an investment account with 6% interest rate in order to always have money to cover the cost of this bridge

How you are fulfilling the 3 imperatives that were sent out : how you are dealing with the "4th" imperative that was issued at the spring management training. Don also wants to know what specific steps you have taken

What did learn about the equipment or technique : How data support this?3. How calculations support this and What did learn about the equipment or technique

What is the valuation discount currently put by the market : In the event of an IPO what would be the market price of shares of the LAB Pharma division? Can A DCF valuation be applied? Why or why not?

What are the major components of a sequential function chart : What are the major components of a sequential function chart? What types of processes and applications are suitable for SFC implementation

What is mittal steel core competency : What is Mittal Steel's core competency, and what is its global business strategy?

Describe one likely method or model someone : Describe one likely method or model someone would use to make each decision - Selecting among several summer internship offers

User Account

All Pages