Miniature Wire Heat Pipes: Study of the Processes of Fluid Dynamics in Microgravity (WMHP) - 11.22.16

Overview | Description | Applications | Operations | Results | Publications | Imagery

ISS Science for Everyone

Science Objectives for Everyone
MHP (Miniature Wire Heat Transfer Tube) a fluid mechanics test of 3 mini heat pipes with water at different pressures.
Science Results for Everyone
Information Pending

The following content was provided by A. V. Markov, and is maintained in a database by the ISS Program Science Office.
Experiment Details


Principal Investigator(s)
A. V. Markov, S.P. Korolev RSC Energia, Russia

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Sponsoring Space Agency
Russian Federal Space Agency (Roscosmos)

Sponsoring Organization
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Research Benefits
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ISS Expedition Duration
April 2006 - September 2006

Expeditions Assigned

Previous Missions
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Experiment Description

Research Overview
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To study the processes of fluid dynamics in microgravity conditions.

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Space Applications
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Earth Applications
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Operational Requirements and Protocols
Tests of functioning of small-size heat pipes filled with distilled water. Assessment of the coolant efficiency.
The equipment consists of a single unit, which accommodates two heat pipes and a data acquisition system. Distilled water in amount of 50 and 60 ml is used as a coolant. Each miniature heat pipe is divided in length to three different parts: an evaporator (20 mm), an adiabatic section (50 mm) and a capacitor (30 mm).

The heat is transferred to the evaporator by an electric heater attached with the use of thermal grease. The heat is removed from the capacitor through a copper radiator and two cooling fans. The heat is supplied to the system gradually with the use of an electric heater through a miniature heat pipe. The system functioning will be verified under seven different modes at power levels from 5 W to 35 W. To control the temperature variation along the heat pipe, three thermocouples are attached at its surface (Omega T-type), one of which has a direct contact with the data acquisition board. The rest thermocouples are accommodated on the heat distributor and insulation. All data is stored on the memory map, which is returned to the ground upon the experiment completion.

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Decadal Survey Recommendations

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Results/More Information

Information on miniature heat pipe operation recorded on the memory map.

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Related Websites
Energia - Science Research on the ISS Russian Segment

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image Kit with MHP equipment consisting of Block MHP and MHP memory map (in cover).
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