• Kempers R.
  • Robinson A.
  • Siedel S.
  • Smith K.

In certain applications geometric constraints may make it impractical to use a straight thermosyphon. This paper aims to characterize the performance of a counter-flow thermosyphon with varying bend angles in the adiabatic section and a range of fluid loadings. The results of this study demonstrate that adequate levels of heat transfer can be achieved with bends in the adiabatic section connecting the evaporator and condenser sections. In general the effects of bend angle and fluid loading had relatively little effect on total thermal resistance. Individual evaporator and condenser resistances were also characterized and compared to predictions from existing boiling and condensation correlations. Finally, the failure limit of each thermosyphon was characterized. Failure limits were found to be dependent on fill volume and bend angle.

Recent Publications

August 09, 2017

A Cloud Native Approach to 5G Network Slicing

  • Francini A.
  • Miller R.
  • Sharma S.

5G networks will have to support a set of very diverse and often extreme requirements. Network slicing offers an effective way to unlock the full potential of 5G networks and meet those requirements on a shared network infrastructure. This paper presents a cloud native approach to network slicing. The cloud ...

August 01, 2017

Modeling and simulation of RSOA with a dual-electrode configuration

  • De Valicourt G.
  • Liu Z.
  • Violas M.
  • Wang H.
  • Wu Q.

Based on the physical model of a bulk reflective semiconductor optical amplifier (RSOA) used as a modulator in radio over fiber (RoF) links, the distributions of carrier density, signal photon density, and amplified spontaneous emission photon density are demonstrated. One of limits in the use of RSOA is the lower ...

July 12, 2017

PrivApprox: Privacy-Preserving Stream Analytics

  • Chen R.
  • Christof Fetzer
  • Le D.
  • Martin Beck
  • Pramod Bhatotia
  • Thorsten Strufe

How to preserve users' privacy while supporting high-utility analytics for low-latency stream processing? To answer this question: we describe the design, implementation and evaluation of PRIVAPPROX, a data analytics system for privacy-preserving stream processing. PRIVAPPROX provides three properties: (i) Privacy: zero-knowledge privacy (ezk) guarantees for users, a privacy bound tighter ...