Problem Description:

Three simple heat exchanger designs are shown below. Cold water flows in the 2-direction over heated

tubes. The water comes at 2m/s and at a temperature of 15 C. The water tubes are kept at 60 C.

(a) Inline design

Compare the three designs in terms of:

(b) Staggered design I

(c) Staggered design II

Figure 1: proposed heat exchanger designs

1. Pressure drop: pressure difference between the inlet and the outlet on the water side

2. Water temperature rise: difference between average exit temperature and the inlet temperature

3. Exit water temperature uniformity:

a. Choose your own way of defining how uniform the exit water temperature is

4. In each design, which tube is working the hardest in heating the water? Why?

Deliverables

1. A workbench archive (file should have the extension *.wbpz) that contains all three simulations

[30 % of the final project grade]

a. Each simulation should have its own geometry, mesh, and converged solution.

2. A professional report that describes your geometry, mesh, problems set up and solution

explaining how you achieved your answers to the questions above. Each slide should contain at

least a brief paragraph explaining what the slide describes. [20% of the final project grade]