Patent ID: 8430157
Filing Date: 2013-04-30
Classification: E21B,F24H

Abstract:
1. A device comprising: a combination data logger and control module; a heat transfer medium circulation device responsive to the combination data logger and control module; a heat transfer medium distribution system communicating with the heat transfer medium circulation device; a service object interacting with the heat transfer medium distribution system, wherein the heat transfer medium distribution system facilitates heat transfer between the service object and a heat transfer medium confined within the heat transfer medium distribution system; a pair of motors, each of the pair of motors coupled to the heat transfer medium circulation device, wherein one of the pair of motors is an electric motor, and the other motor of the pair of motors is a non-electric motor; and a motor control and switching circuit disposed between the data logger and control module and the pair of motors, the motor control and switching circuit selecting one of the pair of motors for use in driving the heat transfer medium circulation device in response to a predetermined signal provided by the data logger and control module.