HOST LAMP powers a small humidifier by transforming a lamp’s waste heat into electrical energy.

Lamps are among the most commonly used electrical items. They emit a great amount of waste heat in their production of light. HOST LAMP turns the lamp into a host for a second appliance – a humidifier. This guest of the host lamp obtains energy from the lamp’s waste heat.

The guest and host system makes use of temperature differences, with TGMs (thermoelectric generator modules) transforming heat into electricity using the Seebeck effect. Four TGMs are placed between the humidifier’s water tank and an aluminium heat sink, and produce electricity via the difference in temperature. The electricity charges the humidifier’s battery. The water creates vapour for the humidifier, and also maximises the temperature difference.