Experience · Engineering Internship, Hong Kong
Lingnan University
Compact Cooling System — Humanitarian Technology
Product Design · Embedded Systems · Prototyping · Team Leadership
Led a seven-person team from initial concept to a fully working cooling prototype in six weeks, integrating CAD, 3D-printed components, Peltier cooling, water circulation, airflow and Arduino/C++ control.

Cooling for humid, high-density living
A compact cooling system for humid, high-density living environments, where conventional cooling may be expensive, bulky or hard to deploy. The engineering challenge was to combine several subsystems into one reliable, compact prototype:
Across the whole engineering process
I worked across the entire process — not one isolated subsystem — from concept to a tested prototype.
Designed and iterated in SolidWorks
The physical system was designed and repeatedly refined in SolidWorks, with multiple physical iterations produced by 3D printing rather than stopping at CAD.
One thermal system, several subsystems
Peltier cooling, water circulation and forced airflow had to be managed as one thermal system rather than separate components.
Arduino + C++
I integrated the physical system with electronics and programmed its control in Arduino / C++, connecting the mechanical / thermal design with software-controlled hardware.
Making everything work together
The real challenge was not making a Peltier, a pump, a fan or an Arduino work on their own — it was making all of them work together as one reliable prototype.
Six weeks, many iterations
With only six weeks, we worked iteratively — improving the design through multiple prototype iterations rather than trying to perfect everything before fabrication.
Measured on real hardware
The final system was physically tested, not judged only from calculations or CAD.
Observed prototype performance — not a claim of room-scale air conditioning.
Leading seven engineers
I led a seven-person engineering team through the six-week project, responsible for helping several technical streams converge into one working system:
- Dividing technical work
- Coordinating mechanical / electrical / software tasks
- Keeping the subsystems compatible
- Managing iteration under time pressure
- Driving the team towards a complete integrated prototype
What we delivered
My contribution
- Led the seven-person project team
- Designed and refined the system in SolidWorks
- Developed multiple 3D-printed prototypes
- Integrated Peltier cooling
- Integrated water circulation
- Integrated airflow
- Worked on electronics
- Programmed control using Arduino / C++
- Integrated hardware and software
- Tested and iterated the complete system
- Delivered the final working prototype