1. *

2. Oscillating (Pulsating) Heat Pipes
Oscillating Heat Pipes (OHPs) are:
-passive
-simply formed
-gravity independent
two phase heat transport devices capable of excellent thermal performance without the complications associated with the use of an internal wick.
OHPs have the potential to fill a niche in the passive thermal control of satellites.
Typical OHP**

3. Project Objectives
Evaporator
Adiabatic Region
Condenser
Develop a design tool/model capable of predicting the heat transfer capability of a given OHP . Q Tc
Vapor Plug
Liquid Slug
Basis for OHP Fluid Flow/Heat Transfer Model
Collect experimental data to further our understanding of OHPs and help support and/or refine the model
IR Thermograph of an OHP**
References
*Fingers, Richard, Williams, Andrew, "Breaking Down the Thermal Wall:oneAFRL Thermal Program," Proceedings from the Thermal Sciences and Materials Workshop, Kettering, OH, September 2008.
**Khandekar, S., 2004, “Thermo-hydrodynamics of Closed Loop Pulsating Heat Pipes,” Institut fur Kernenergetik und Energiesysteme der Universitat Stuttgart.