Presentation of Results:(I) Plot the “Total Head Gain” against “Volume Flow Rate” for cases (A), (B)(I) and (B)(II) as s
Posted: Tue Apr 26, 2022 8:51 pm
Presentation of Results:(I) Plot the “Total Head Gain” against “Volume Flow Rate” for cases (A), (B)(I) and (B)(II) as shown in Figures 1, 2 and 3.(II) Compare the experimental results with the theories.Suggested Discussions:You may explain on the following items and some unusual observations:(i) The similarities and differences between the experimental results and the theories.(ii) The fluctuation in pump speed.(iii) The sudden drop in Head Gain (to almost zero) at large volume flow rate.(iv) For the parallel pumps arrangement, the statement: 𝑯𝑮𝑻=𝑯𝑮𝟏=𝑯𝑮𝟐 contains error or is not correct. Why?(v) At very large volume flow rate through the pump, the exit pressure is lower than the inlet pressure. Is it an experimental error?
Presentation of Results:(I) Plot the “Total Head Gain” against “Volume Flow Rate” for cases (A), (B)(I) and (B)(II) as shown in Figures 1, 2 and 3.(II) Compare the experimental results with the theories.Suggested Discussions:You may explain on the following items and some unusual observations:(i) The similarities and differences between the experimental results and the theories.(ii) The fluctuation in pump speed.(iii) The sudden drop in Head Gain (to almost zero) at large volume flow rate.(iv) For the parallel pumps arrangement, the statement: 𝑯𝑮𝑻=𝑯𝑮𝟏=𝑯𝑮𝟐 contains error or is not correct. Why?(v) At very large volume flow rate through the pump, the exit pressure is lower than the inlet pressure. Is it an experimental error?
Presentation of Results:(I) Plot the “Total Head Gain” against “Volume Flow Rate” for cases (A), (B)(I) and (B)(II) as shown in Figures 1, 2 and 3.(II) Compare the experimental results with the theories.Suggested Discussions:You may explain on the following items and some unusual observations:(i) The similarities and differences between the experimental results and the theories.(ii) The fluctuation in pump speed.(iii) The sudden drop in Head Gain (to almost zero) at large volume flow rate.(iv) For the parallel pumps arrangement, the statement: 𝑯𝑮𝑻=𝑯𝑮𝟏=𝑯𝑮𝟐 contains error or is not correct. Why?(v) At very large volume flow rate through the pump, the exit pressure is lower than the inlet pressure. Is it an experimental error?
Presentation of Results:
(I) Plot the “Total Head Gain” against “Volume Flow Rate” for cases (A), (B)(I) and (B)(II) as shown in Figures 1, 2 and 3.
(II) Compare the experimental results with the theories.
Suggested Discussions:
You may explain on the following items and some unusual observations:
(i) The similarities and differences between the experimental results and the theories.
(ii) The fluctuation in pump speed.
(iii) The sudden drop in Head Gain (to almost zero) at large volume flow rate.
(iv) For the parallel pumps arrangement, the statement: 𝑯𝑮𝑻=𝑯𝑮𝟏=𝑯𝑮𝟐 contains error or is not correct. Why?
(v) At very large volume flow rate through the pump, the exit pressure is lower than the inlet pressure. Is it an experimental error?
Experiment: Operation Characteristics of Centrifugal Pump Experimental Data: Diameter of the circular pipe at the pump system exit -0.05 m Table 1 - Single Centrifugal Pump: Volume Flow Rate (cm Hg) 0.9 25 Pump Speed (rpm) 2940 2940 2850 2802 Inlet 0 2.5 10 19 Pump Pressure (kPa) Exit 150 146 125 73 03 5.4 3.9 2778 24 30 2770 25 18 6.4 2760 22 14 3.8 6 7 7.6 Table 2 - Two Centrifugal Pumps in Series: Volume Flow Rate (cm Hg) 0 0.4 2.1 Pump 1 Pump Speed (rpm) 2943 2908 2828 Inleto 3.5 15 Pump Pressure (kPa) Exit 132 140 105 Pump 2 Pump Speed (rpm) 2960 2942 2888 Inlet 132 140 105 Pump Pressure (kPa) Exit 260 290 210 2773 24 39 2764 25 13 2759 26 7 2757 26 6 2860 2867 39 86 2865 13 26 2859 7 12 6 6 1.7 4.0 9.1 2852 Table 3 - Two Centrifugal Pumps in Parallel: Volume Flow Rate (em Hg) 0.3 09 13 Pump 1 Pump Speed (rpm) 2942 2941 2926 2897 Inleto 0 25 45 Pump Pressure (kPa) Exit 156 155 147 140 Pump 2 Pump Speed (rpm) 2960 2954 2957 2959 Inlet 6 7 Pump Pressure (kPa) 7 8 Exit 156 154 144 138 2851 9 127 9 127 2825 13.5 108 2955 8 2906 135 124 2890 16 105 124 Plot the "Total Head Gain" against Volume Flow Rate" for cases (A) (BMCT) and (B)(I) as shown in Figures 1, 2 and 3. () Compare the experimental results with the theories. You may explain on the following items and some constal observations: © The simulanties and differences between the experimental results and the theories. (1) The fluctuation in pump speed (1) The sudden drop in Head Gain (to almost zero) at large volume flow rate. (iv) For the parallel pumps aangement, the statement. Het = Hc1 = Haz contains error or is not correct. Why? (v) At very large volume flow rate through the pump the esat pressure is lower than the inlet pressure. Is it an experimental error?
Presentation of Results:(I) Plot the “Total Head Gain” against “Volume Flow Rate” for cases (A), (B)(I) and (B)(II) as shown in Figures 1, 2 and 3.(II) Compare the experimental results with the theories.Suggested Discussions:You may explain on the following items and some unusual observations:(i) The similarities and differences between the experimental results and the theories.(ii) The fluctuation in pump speed.(iii) The sudden drop in Head Gain (to almost zero) at large volume flow rate.(iv) For the parallel pumps arrangement, the statement: 𝑯𝑮𝑻=𝑯𝑮𝟏=𝑯𝑮𝟐 contains error or is not correct. Why?(v) At very large volume flow rate through the pump, the exit pressure is lower than the inlet pressure. Is it an experimental error?
Presentation of Results:(I) Plot the “Total Head Gain” against “Volume Flow Rate” for cases (A), (B)(I) and (B)(II) as shown in Figures 1, 2 and 3.(II) Compare the experimental results with the theories.Suggested Discussions:You may explain on the following items and some unusual observations:(i) The similarities and differences between the experimental results and the theories.(ii) The fluctuation in pump speed.(iii) The sudden drop in Head Gain (to almost zero) at large volume flow rate.(iv) For the parallel pumps arrangement, the statement: 𝑯𝑮𝑻=𝑯𝑮𝟏=𝑯𝑮𝟐 contains error or is not correct. Why?(v) At very large volume flow rate through the pump, the exit pressure is lower than the inlet pressure. Is it an experimental error?
Presentation of Results:
(I) Plot the “Total Head Gain” against “Volume Flow Rate” for cases (A), (B)(I) and (B)(II) as shown in Figures 1, 2 and 3.
(II) Compare the experimental results with the theories.
Suggested Discussions:
You may explain on the following items and some unusual observations:
(i) The similarities and differences between the experimental results and the theories.
(ii) The fluctuation in pump speed.
(iii) The sudden drop in Head Gain (to almost zero) at large volume flow rate.
(iv) For the parallel pumps arrangement, the statement: 𝑯𝑮𝑻=𝑯𝑮𝟏=𝑯𝑮𝟐 contains error or is not correct. Why?
(v) At very large volume flow rate through the pump, the exit pressure is lower than the inlet pressure. Is it an experimental error?
- Presentation Of Results I Plot The Total Head Gain Against Volume Flow Rate For Cases A B I And B Ii As S 1 (56.45 KiB) Viewed 19 times