Table of Contents
Prototyping, Engineering Analysis, SimulationFor determination of a pump, radiator and fan that will allow for a maximum COP output, heat transfer and thermodynamic analyses were needed as well as component specifications to determine their compatibility with each other as well as with our system design.
For full detail, see presentation here: Feasibility Calculations Presentation
Overall, a chart of possible COP values with different system coolant flow rates was constructed. A table of melting times corresponding to these flow rates as well as expected air outlet temperature and cooling load can be seen below.
Water to Air Heat Exchanger
Pump: Tiny Might
Drawings and Schematics
The vonMises Stress of 80/20 was found using Solid Works to confirm that our structure will not fail. The maximum stress value is about 45 MPa and the yield strength of the 80/20 is about 145 MPa. This gives us a factor of safety of about 3.2 throughout the whole beam.
The load applied was a 50 lb point load in the center of the beam. Since we will have a distributed load, this is a worst case scenario. If the box is completely full, the ice will weigh about 100 lb.
After applying the 50 lb load, a 100 lb point load was also used. At this load, a factor of safety was still 1.6.
The maximum displacement at the 50 lb point load is 0.21 mm. This is about 8 thousandths of an inch. This displacement is also the worst case so we are not concerned about too much displacement.