Abstract: Embodiments of the present invention provide a device for personal heat control, including a flexible housing comprising a cooling surface, a heating surface thermally insulated from the cooling surface, and a heat transfer unit configured to transfer heat from cooling surface to heating surface. Other embodiments of the present invention provide a system for cooling wearers of impact-resistant helmets, including an impact-resistant outer shell, foam pads affixed to an inside of the impact-resistant outer shell and configured to rest on a wearer's head, thermoelectric cooling devices spaced to avoid interference with foam pads and configured to rest against the head, a heat sink, and heat pipes thermally coupled at one end to thermoelectric cooling devices and at another end to the heat sink, and configured to transfer heat from thermoelectric cooling devices to heat sink with minimal heat loss, the heat pipes spaced to avoid interference with the foam pads.

Abstract: Embodiments of the present invention provide a device for personal heat control, including a flexible housing comprising a cooling surface, a heating surface thermally insulated from the cooling surface, and a heat transfer unit configured to transfer heat from cooling surface to heating surface. Other embodiments of the present invention provide a system for cooling wearers of impact-resistant helmets, comprising an impact-resistant outer shell, foam pads affixed to an inside of the impact-resistant outer shell and configured to rest on a wearer's head, thermoelectric cooling devices spaced to avoid interference with foam pads and configured to rest against the head, a heat sink, and heat pipes thermally coupled at one end to thermoelectric cooling devices and at another end to the heat sink, and configured to transfer heat from thermoelectric cooling devices to heat sink with minimal heat loss, the heat pipes spaced to avoid interference with the foam pads.

Abstract: Embodiments of the present invention provide a device for personal heat control, including a flexible housing comprising a cooling surface, a heating surface thermally insulated from the cooling surface, and a heat transfer unit configured to transfer heat from cooling surface to heating surface. Other embodiments of the present invention provide a system for cooling wearers of impact-resistant helmets, comprising an impact-resistant outer shell, foam pads affixed to an inside of the impact-resistant outer shell and configured to rest on a wearer's head, thermoelectric cooling devices spaced to avoid interference with foam pads and configured to rest against the head, a heat sink, and heat pipes thermally coupled at one end to thermoelectric cooling devices and at another end to the heat sink, and configured to transfer heat from thermoelectric cooling devices to heat sink with minimal heat loss, the heat pipes spaced to avoid interference with the foam pads.