Cooling requires energy, and to achieve cooling without an external power source would involve employing specific material properties, phase transitions, or chemical reactions. These approaches come with challenges, such as high complexity, high cost, potential toxicity concerns, and limited practical applications.
As of now, most cooling methods rely on external energy sources and established refrigeration or heat exchange technologies. Until a groundbreaking technological breakthrough occurs, the concept of self-cooling soda bottles remains largely theoretical and speculative.
