Abstract
The experimental results of a propylene miniLHP with advanced stainless steel wick and novel design pressure regulating valve are presented and discussed in the paper. The LHP thermal control system has been designed for low power (below 30 W) and low temperature (control temperature set point -30 oC) operation. System has demonstrated outstanding performance and excellent capability of temperature control. The new design of pressure regulating valve allows to eliminate such undesirable effects as temperature oscillations and instability of start up and operation at low power regimes, to increase the system reliability and precision temperature control. The analysis of functionality of the pressure regulating valve as a thermal switch and temperature controller is presented.
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