Development of an Engineering Model of a monophasic Electro Hydro Dynamic (EHD) pumped fluid loop within the frame of the NEOSAT pre-development activities

Date

2016-07-10

Journal Title

Journal ISSN

Volume Title

Publisher

46th International Conference on Environmental Systems

Abstract

This publication presents the development of a novel pumped fluid loop thermal regulation system, completely free of moving parts. This technology is using electro hydro dynamic pumping of a dielectric coolant. This pumping mechanism gives unique advantages, e.g. regulated thermal conductivity and high reliability.

In the framework of ESA “NEOSAT Phase B Pre-Development Activities”, APR Technologies has delivered an Engineering Model of a monophasic pumped fluid loop for a potential application on a satcom platform under development by TAS and ADS. The thermal regulation system is specified to a qualification operating temperature range between -20 to 70 °C with a thermal conductance between 0 and 3 W/K over a 0.5 m transport length and 1/8” tubing.

EHD pumped fluid loop systems have a potential wide range of applications addressing • General heat removal from heat dissipating equipment and payloads. • Closed loop temperature control. For example temperature sensitive sensors. In comparison with heat pipes and thermal conduction, the EHD pumped loop system is particularly suited for thermal switching and temperature control applications. The fluid flow rate is directly controlled by the strength of the electrical field generating the EHD flow and on/off or analogue control schemes can be utilized. Although driven by externally applied electric field, the required energy input is low (0.3W) and much less than typical electrical motors used in mechanically pumped fluid loops. The EHD pump technology developed under this contract is furthermore scalable across a wide range of fluid flow rates, operating temperature ranges and mechanical envelopes. In comparison with heat pipes and Loop Heat Pipes, EHD pumped fluid loops are much less affected by gravitational field thus simplifying ground testing. In comparison with mechanically-pumped fluid loop, EHD pumped fluid loops have advantageously no moving mechanical parts.

Description

Sweden
Netherlands
France
APR Technologies
ESA
CNES
TAS France
ADS France
104
ICES104: Advances in Thermal Control Technology
Vienna, Austria
Robert Thorslund, APR Technologies, Sweden
Are Björneklett, APR Technologies, Sweden
Mikael Antelius, APR Technologies, Sweden
Tisna Tjiptahardja, European Space Agency, The Netherlands
Thomas Huens, Centre National d'Études Spatiales, France
Arnaud Scommegna, Thales Alenia Space, France
Andy Walker , Airbus Defence and Space, France
The 46th International Conference on Environmental Systems was held in Vienna, Austria, USA on 10 July 2016 through 14 July 2016.

Keywords

Satellite, Thermal Control, EHD pumped fluid loop, Engineering Model

Citation