P16013: Body Cooling System

Customer Handoff & Final Project Documentation

Table of Contents

Team Vision for Final Demo and Handoff

The team planned to complete and completed the following during this phase:

Test Results Summary

Simulated Tissue Test 2

Simulated Tissue Test 2

Preliminary data obtained from tissue plate testing as well as other tests is promising, as shown in the above sample test. Multiple temperature profile graphs were recorded using the Pasco software, showing an effective usage time of around 7000 seconds (~2 hrs) with the most effective transfer occurring in the first 4500 seconds before the PCM fully melted. Other results were consistent with this analysis, with each developing solid and plainly visible curves. At times, due to sliding of the tissue on the hot plate, the data would spike or dip as the probes changed positions. This could be minimized in the future by the creation of a belt-sample with the same dimensions as the surface of the hot plate rather than using a full sized belt which does not fit as easily on the hot plate. These results provide a worst-case scenario for the usage of the belt; most users prefer to wear it on the outside of clothing which add to the insulation separating the PCM and the heat generation of the human body. In addition, the tissue plate model assumes a wet boundary and minimal body fat which increases the rate of heat transfer and provide a shorter-than-actual effective time. During actual human testing, an effective duration of 9000-10000 seconds (2.5+ hrs) is anticipated, though the penalty of this gain is a slower thermal energy transfer and a lower cooling effect.

Performance vs. Requirements

The final engineering requirements and final performance of the cooling belt and test rig can be seen below. Requirements with an actual value of TBD were not able to be tested without IRB approval for human testing and will therefore be tested once IRB approval is obtained in future stages of the project. The rate of body cooling could also not be determined without IRB approval for human testing, but since the human body is very good at regulating the core temperature, the group decided that it would not be feasible for future groups to measure this.
Performance vs Requirements

Performance vs Requirements

Risk and Problem Tracking

Risk Management

For the full risk management document, click here.

Problem Tracking

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For the full risk management document, click here.

Final Project Documentation

Technical Paper

Final Poster

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For the PDF document of the poster, click here.

Bill of Materials (BOM)

Below is the team's final BOM. There have been no additions since the last phase. You can find our BOM spreadsheet here.

MatVesl Heat Sealed PCM

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Final Belt Prototype

PASCO Software Manual

A PASCO software manual was created for future users of the test rig. It is a step-by-step guide on how to set up the software specifically for testing body cooling garments. The user manual can be found here.

Functional Demo Materials

A link to our final presentation with additional information can be found here.

Plans for Wrap-up

Future Recommendations

The individual contributions for the past three weeks can be found here:

Mallory Wingate, Alyssa Lorczak, Jared Raphael, Ben Spangler, Crystal Mendoza Paulin

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