Conveners
Tue-Af-Orals Session 5: New Devices and Novel Concepts
- Zhihua GAN
Dr
Richard Epstein
(ThermoDynamic Films, LLC)
08/07/2014, 16:00
C-14: New devices and novel concepts
Invited Oral (30min)
Compact, vibration-free solid-state refrigerators, are ideal for cooling infrared sensors, gamma-ray spectrometers and other cryogenic electronics. Such coolers could be integrated into these devices, eliminating the need for liquid cryogens or bulky, noisy mechanical coolers. Currently, the dominant solid-state cooling technology is thermoelectric cooling, which uses the Peltier effect....
Dr
Armen Gulian
(Chapman University)
08/07/2014, 16:30
C-14: New devices and novel concepts
Oral presentation (15min)
In this design microwave photons are propagating in a sapphire rod, and are being absorbed by a superconductor deposited on the surface of the rod. The frequency of the radiation is tuned to be less than the energy gap in the superconductor, so that the pair breaking is not taking place. The photon pumping redistributes the electron-hole quasiparticles, so that their distribution function is...
Mr
Daniel Martins
(CEFITEC, Departamento de Física, FCT - Universidade Nova de Lisboa, 2829-516 Caparica, Portuga)
08/07/2014, 16:45
C-14: New devices and novel concepts
Oral presentation (15min)
To attenuate temperature fluctuations, inherent to the cryocooler working or due to sudden heat bursts, a thermal Energy Storage Unit (ESU) could be used. The ESU directly coupled to the cold source actuates as a thermal buffer increasing temporarily its cooling capacity and providing a better thermal stability of the cold finger (“Power Booster mode”). The energy storage units presented here...
Susmita Koley
(Cryogenic Engineering Centre, IIT Kharagpur)
08/07/2014, 17:00
C-14: New devices and novel concepts
Oral presentation (15min)
The use of vibration-free solid-sorption based cooling in space cryogenics has a long successful history. In a typical Linde-Hampson cycle based liquefaction process, periodically
adsorbed (or desorbed) gas to (or from) a solid adsorbent plays the role of ‘thermal compressor’. Alternatively, adsorbent beds can be used as ‘condenser’ or ‘evaporator’, while a mechanical compressor generates the...
Srinivas Vanapalli
(University of Twente)
08/07/2014, 17:15
C-14: New devices and novel concepts
Oral presentation (15min)
We report on the development of a heat switch for autonomous temperature control of electronic components in a satellite. A heat switch can modulate when needed between roles of a good thermal conductor and a good thermal insulator. Electronic boxes on a satellite should be maintained within a typical optimum temperature range of 260 to 310 K. The heat sinking is usually by means of a...
Dr
Armen Gulian
(Chapman university)
08/07/2014, 17:30
C-14: New devices and novel concepts
Oral presentation (15min)
The most advanced contemporary efforts and concepts for registering gravitational waves are focused on measuring tiny deviations in large arm (kilometers in case of LIGO and thousands of kilometers in case of LISA) interferometers via photons. In this presentation we discuss a concept for the detection of gravitational waves using an antenna comprised of superconducting electrons (Cooper...
Dr
Tao YAN
(Technical Institute of Physical and Institute, Chinese Academy of Science)
08/07/2014, 17:45
C-05: Cryostat technology
Oral presentation (15min)
In this paper a compact remote heat transfer device (CRHD) for cryocoolers is proposed. This device is especially attractive in cases where cryocoolers are not easy to set near the heat source, generally the infrared sensor. The CRHD is designed on basis of the conception of loop heat pipes, while the primary evaporator is located near the cryocooler cold head and a simple tube-in-tube...
