Nanofluid Heat Pipes 2015 Symposium.pptx
Published on: Mar 3, 2016
Transcripts - Nanofluid Heat Pipes 2015 Symposium.pptx
The Design and Experimentation on
Nanofluid Heat Pipes
Mechanical Engineering Department
CPP Senior Symposium 2015
❖ Computer generated model of nanofluid heat pipe
❖ Theoretical results of experiment
❖ Select heat pipe, working fluid, and type of wick
❖ Finalize configuration and prepare schematics for running the
heat pipe experiment
What is a Heat Pipe
❖ High capacity heat transfer devices that use evaporation, insulation
and condensation as means to remove heat .
❖ Uses a wick, as a porous media, to pump the condensed liquid
working fluid to evaporation section [2-7].
Kinematics of Heat Pipe
1. Evaporation section: Working fluid is heat up. Vaporized fluid creates a pressure gradient to
force the vapor move towards the condenser section.
2. Adiabatic section: Vapor travels. Hollow and vacuum.
3. Condenser section: Heat exits. Vaporized working fluid condense and release its latent heat.
The condensed working fluid drawn back to evaporator section through wick.
Applications of Heat Pipes[10-12]
• Space applications
– Transport from inside to outside of
shuttles, satellites, etc
– Does not require gravitational force
• Technological systems - ones
that require large heat flux
with small space
– Cell Phones
❖ Porous medium
❖ Empty space (capillary action)
created in between the particles
arrangement - enables fluids to
move through it.
❖ Pumping condensed working fluid
from condenser section to the
❖ Types of wick.
❖ Sintered metal powders
❖ Woven fiberglass or grooves
❖Sintered copper powder wick;
packed with spherical particles of felt
metal fibers or powders.
Using Nanofluids as a Working Fluid
❖ Nanofluids have significantly higher thermal conductivities compared
to traditional fluids
❖ Although better performance, imposing nanoparticles increases
density and viscosity; hinders the performance of the heat pipe
❖ Design for:
❖ High thermal conductivity
❖ Optimal nanofluid mass concentration
❖ Small particle size
❖ Aluminum Oxide is a workable fluid
as long as:
❖ Range of specific heat flux at the desired
temperature range [16-17]
❖ Compatibility with the pipe and the wick 
Schematics of Experiment
❖ The experiment setup consists of resistance heater, watt meter, and variable voltage
❖ Data acquisition part consists of temperature data logger and PC to record the
thermocouple readings at different positions of the heat pipe.
Heat Pipe setupFull experiment setup
Limits in Consideration
Our Current Selections
• Copper heat pipe with sintered copper powder wick
• Aluminum Oxide nanofluid solution
• Equipment to set up experiment
• Achieve desired conditions for heat pipe
• Conduct the experiment
• Record experimental results
• Extrapolate data and explain any deviations
• Heat transfer device that dissipates heat by the use
of a working fluid, wick, evaporator, and condenser
• Used in space applications and small technological
• Nanofluids increase thermal conductivity of working
fluid, enhances thermal performance
❖ Purpose of Senior Project -
Test the theoretical model,
compare results, and report
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