Question 1:

As a graduate engineer you have been assigned to size a cooling tower pump for your first project. Using the information provided, and for the required cooling tower pump, complete the table below with the relevant data.

Q1.1: head

Q1.2: flow

Q1.3: NPSH

Q1.4: Impeller diameter

Q1.5: power

Q1.6: pump selection

Q1.7-0.110: Show your answers by drawing on the sketch below

Q1.7: pipe head loss

Q1.8: water vapor pressure

Q1.9: cooling tower static head

Q1.10: water absolute pressure

Questions 2

The following information is gathered/measured from the site.

- The plant room is in the basement and the cooling tower pump (with 200mm nominal standard steel rough iron pipe on the suction side) draws water out of the cooling tower.

- The cooling tower is installed on the sixth floor of the same building.

- The elevation from the basement to sixth floor is 20m.

- Use the Attachments provided to assist where relevant.

- Access the following online resource through the Reading List (on Blackboard) in relation to the physical properties of water:

o Crittenden, J. C., Montgomery Watson, H., & Wiley, L (2012). MWH's water treatment : principles and design (3rd ed. / ed.). Hoboken, N.J. John Wiley and Sons. (see Appendix C Physical Properties of Water)

- Other information of relevance is shown below.

Question

Q2.1: The cooling tower drawing showing its physical dimension

Q2.2: The selected cooling tower data sheet shows technical data

Q2.3: The selected chiller's condenser data sheet showing condenser water flow and pressure drop

Q2.4: Moody diagram with point showing selection

Q2.5: Steel pipe table with both the Suction Side pipe and the Discharge side pipes shown

Q2.6: Sketch of the system (pump, pipes, cooling towers, other hardware)

Q2.7: Identify the relevant physical properties of water for each of the following:
- Cooling Tower
- Pump Suction Side
- Pump Discharge side

Q2.8: Identify the relevant pump curve