TIA GIP Funded · Prototype Phase01
Thermoka 2.2 Solar-Thermal Absorption Clinic Cooler
A vaccine refrigerator for off-grid and rural clinics that runs on heat from the sun. A lithium-bromide/water absorption cycle turns stored solar heat into cooling with no compressor, and two phase-change material stores, one hot and one cold, carry the clinic through the night and through cloudy days.
Control is layered. Hard-wired PLC interlocks keep the vaccines safe no matter what, while a supervisory model-predictive controller reads the weather forecast and how the fridge is used to decide when to cool and when to charge the stores.
Specifications
- Cooling cycle
- LiBr–water absorption
- Energy storage
- Dual PCM (hot + cold)
- Storage volume
- ~100 L target
- Vaccine range
- 2–8 °C
- Target standard
- WHO PQS E003
- Compressor
- None
- 1SunFree heat, every day.
- 2Solar CollectorCaptures heat, not electricity.
- 3Hot PCM StoreBanks heat for later.
- 4Absorption CycleLiBr–water turns heat into cold.
- 5Cold PCM StoreHolds cold through the night.
- 6Vaccine ChamberHeld at 2–8 °C.