Abstract: A system for conditioning the air within an enclosure which houses heat producing equipment. The system includes a passive heat removal system, for precooling the air, and a thermoelectric temperature control system used in conjunction with the passive heat removal system to achieve the necessary temperature control. A power control system includes a programmable control means which receives signals, from a temperature sensor, which are indicative of the temperature of the air in the enclosure. Based upon these signals, the power control system controls the activation of thermoelectric devices in the thermoelectric temperature control system and controls the activation of fans to remove a desired amount of heat from the air in the enclosure and discharge the unwanted heat to the outside air. A switching device operates to apply battery power to the power control system if the electrical power source for the thermoelectric temperature control system fails.

Abstract: A temperature controlled blanket and a temperature controlled bedding system have provision of both recirculating temperature controlled fluid and temperature controlled gas to enhance performance for convectively heating or cooling a patient. Counter flow or co-flow heat exchanging principles between the temperature controlled liquid and the temperature controlled gas achieves temperature uniformity across different sections of the blanket and the bedding system. Drapes in the temperature controlled bedding system provide a gas envelope around a person using the bedding system. In a further embodiment of the bedding system, the air portion of the bedding system is provided for use with a patient bed which supplies the fluid portion of the overall bedding system. In a further embodiment of the bedding system, the fluid portion of the bedding system is provided for use with a patient bed which supplies the air portion of the overall bedding system.

Abstract: A system for conditioning the air within an enclosure which houses heat producing equipment. The system includes a passive heat removal system, for precooling the air, and a thermoelectric temperature control system used in conjunction with the passive heat removal system to achieve additional cooling, temperature control and heating. The passive heat removal system includes a heat pipe system. A power control system includes a programmable control means which receives signals, from a temperature sensor, which are indicative of the temperature of the air in the enclosure. Based upon these signals, the power control system controls the activation of thermoelectric devices in the thermoelectric temperature control system and controls the activation of fans to remove a desired amount of heat from the air in the enclosure and discharge the unwanted heat to the outside air.

Abstract: An improved thermoelectric temperature control system for selectively heating or cooling a temperature control fluid to be provided through an exit conduit to an external thermal load and returned to the system through an inlet conduit. The system having at least a first liquid heat exchanger, a thermoelectric module in thermal conductivity with the liquid heat exchanger, a heat sink in thermal conductivity with the thermoelectric module, a pump and connecting conduits to move the temperature control fluid from the inlet conduit through the pump and liquid heat exchanger to the exit conduit and power and control electronics to activate the pump and thermoelectric module.