NanoRacks-Valley Christian High School-Thermal Conductivity Experiment (NanoRacks-VCHS-Thermal Conductivity) - 09.27.17

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

ISS Science for Everyone

Science Objectives for Everyone
The microgravity environment causes unusual physical changes to almost anything, from water droplets to the human body. NanoRacks-Valley Christian High School-Thermal Conductivity Experiment (NanoRacks-VCHS-Thermal Conductivity) measures distilled water in microgravity to determine whether its conductivity changes in space as compared to Earth. The investigation studies heat migration through distilled water to measure conductivity.
Science Results for Everyone
Information Pending

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

OpNom: NanoRacks Module-16 S/N 1002

Principal Investigator(s)
Valley Christian High School , Valley Christian High School, San Jose, CA, United States

Co-Investigator(s)/Collaborator(s)
Dan Saldana, Valley Christian High School, San Jose, CA, United States

Developer(s)
NanoRacks, LLC, Webster, TX, United States

Sponsoring Space Agency
National Aeronautics and Space Administration (NASA)

Sponsoring Organization
National Laboratory Education (NLE)

Research Benefits
Scientific Discovery

ISS Expedition Duration
March 2014 - September 2014

Expeditions Assigned
39/40

Previous Missions
Information Pending

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Experiment Description

Research Overview

  • NanoRacks-Valley Christian High School-Thermal Conductivity Experiment (NanoRacks-VCHS-Thermal Conductivity) measures the heat migration through distilled water in a microgravity environment.
  • NanoRacks-VCHS-Thermal Conductivity determines the conductivity of distilled water in space compared with the conductivity of distilled water on earth. Since there won’t be any heat convection in the International Space Station (ISS), it is expected that the conductivity of water will be greater, since the heat loss will be less.

Description
NanoRacks-Valley Christian High School-Thermal Conductivity Experiment (NanoRacks-VCHS-Thermal Conductivity) uses two polycarbonate containers of 14 mL of distilled water with eight separated temperature sensors each, and varying the durations of heating/cooling time, the rate of heat transfer through the fluid is analyzed and compared with the results from the ground control unit. The heat is provided by two waterproof 100 ohm, 0.25 watt resistors embedded in each one of the two water filled containers. Four volts is supplied to the two 100 ohm resistors in parallel and provide a maximum of 0.16 watts each of heat to the 14 mL of distilled water. This low level wattage raises the water temperature a maximum of three degrees Celsius as determined by ground testing.

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Applications

Space Applications
NanoRacks-VCHS-Thermal Conductivity is a basic science investigation with a unique goal enabled by the International Space Station. Students measure heat migration through a sample of distilled water, comparing the difference in its thermal conductivity in microgravity with its conductivity on Earth. Students hypothesize that conductivity is greater in microgravity because heat loss is lower on the station, where there is no heat convection.

Earth Applications
A student team composed of two high school freshmen, one sophomore, three juniors, and one senior designed, built, assembled, programmed, and tested the experiment. Students analyze data while the investigation is in orbit, and inspect the MicroLab after its return to Earth. The investigation provides a unique opportunity for training and real-world experience on a space mission, preparing students for careers in science, technology, engineering and math.

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Operations

Operational Requirements and Protocols

NanoRacks Module-16 is completely autonomous and only requires installation and removal.

Crew interaction with NanoRacks Module-16 is limited to transferring the NanoRacks locker insert from the launch vehicle to the ISS, installation and activation of the NanoRacks Frames into the EXPRESS Rack Locker, cleaning of the air inlet filter (as necessary) and data retrieval (as needed) during the mission.

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Decadal Survey Recommendations

Information Pending

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Results/More Information

Information Pending

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Related Websites

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Imagery

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The NanoRacks-Valley Christian High School-Thermal Conductivity Experiment (NanoRacks-VCHS-Thermal Conductivity) investigation team. Image courtesy of Valley Christian High School.

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