The heat is intense and the lower back sweats. A developer has presented a belt with a rechargeable dry ice compartment. The system uses aluminum tubes integrated into the 3D-printed buckle to distribute cold directly onto the skin. A direct solution for those who spend hours sitting or working outdoors without relying on fans. 🥵
How the dry ice cooling system works 🧊
The belt houses a sealed cartridge with dry ice, which sublimates at -78°C. A flow regulator controls the release of cold gas towards the aluminum tubes that run through the buckle. These tubes, with a contact surface area of about 40 cm², transfer the temperature to the belt fabric and the lower back area. The estimated autonomy is 45 minutes with a full 200-gram charge of dry ice. The user can refill the compartment at any cryogenic supply store.
What nobody tells you about the dry ice belt ❄️
The invention sounds great until you try to sit in a car with -78 degrees pressed against your kidneys. The first tester claims they went from feeling hot to feeling like an ice cube had been transplanted onto their back. Furthermore, refilling the dry ice canister every 45 minutes is hardly convenient if you're on a summer terrace. But hey, if you like extreme thermal contrast and carrying a portable cooler on your belt, this is your accessory.