Coupling Between an Accumulator and a Loop in a Me

Authors: Zhencheng Huang Zhenhui He Dongchuan Mo Xihui Sun Shushen Lu Wenjia Xiao Aswin Pauw Johannes van Es Elisa Laudi

Publish Date: 2009/07/14

Volume: 21, Issue: 1, Pages: 23-29

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Abstract

By means of experiment and simulation we investigated the coupling between the accumulator and the loop in the Tracker Thermal Control System TTCS system which is a typical mechanically pumped carbon dioxide twophase loop by studying the system behaviors under the disturbance of the temperature boundary of the condensers and the step change of the evaporator heat load We found that the disturbance of the loop affects the accumulator and in turns affects the loop itself If the heat compensation of the accumulator is large enough eg by using the accumulator heater with enough heating power and with a thermal conductance good enough between the heater and the twophase CO2 inside the accumulator the loop is controllable over the disturbance The coupling is a fundamentally important factor to be considered for the design of a stable and controllable twophase system such as a mechanically pumped twophase loop

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