| 摘要 |
The system for measuring heat conductivity of insulating materials consists of a heat source with a temperature sensor and a heater, connected through a power meter to the output of the first power controller, a heat collector with a temperature sensor, a cooling device and a heater, connected to the output of the second power controller, and a heat shield with a temperature sensor and a heater, connected to the output of the third power controller. Unique characteristics: The input of the first power controller (12) is connected to the output of the first comparator (16). One input of the latter is connected to the temperature sensor (8) of the heat source (2), while the other input is connected to the first source of the reference voltage (19). The input of the second power controller (13) is connected to the output of the second comparator (17). One input of the latter is connected to the temperature sensor (9) of the heat collector (3), while the other input is connected to the second source of the reference voltage (20). The input of the third power controller (14) is connected to the output of the third comparator (18). One input of the latter is connected to the temperature sensor (10) of the heat shield (2), while the other input is connected to the temperature sensor (8) of the heat source (2).
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