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Performance of Evacuated Blood Collection Tubes at High Altitude
High Altitude Medicine & Biology, 2008Researchers and clinicians may not be aware that the performance of evacuated blood collection systems is impaired at high altitude. We tested four sizes of Vacutainer tubes at altitudes ranging from sea level to 5341 m to and determined that draw volumes are reduced by approximately 0.5 mL for every 1000 m gain in terrestrial elevation.
Meaghan J, MacNutt, A William, Sheel
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Wide aperture valve for evacuating shock tubes
Journal of Scientific Instruments, 1964Rapid evacuation of a shock tube has been achieved by pumping through an aperture formed by removal of a portion of the tube that is later replaced and aligned. A mechanism is described for this purpose.
R H Collins, D H Napier
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Flat-Plate and Evacuated Tube Collectors
2013Solar-energy collectors are devices employed to gain useful heat energy from the incident solar radiation. They can be of the concentrating or the flat-plate type. A simple flat-plate solar energy collector consists basically of an absorbing surface which absorbs the insolation and transmit it in form of heat to a working fluid commonly air or water. A
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Evacuated-tube directional-radiating cooling system
Solar Energy, 1985Abstract A new type of radiative cooling system is described. The radiator makes use of nonimaging optics and evacuated-tube technology to radiate significant amounts of heat to the 3 K environment of outer space. The nonimaging optics are used to direct the radiation overhead, through the most transparent part of the 8–13 μm atmospheric window.
John R. Hull, William W. Schertz
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Performance Analysis of Solar Evacuated Tube Collector
Advanced Materials Research, 2013The high temperature operation of Evacuated Tube Collectors (ETC) and their very low radiant heat losses make them ideal for solar water heating, solar space heating, desiccant air conditioning, thermal driven cooling and industrial process heating applications. The work temperature of common ETC can reach 100~ 250°C. The vacuum tube envelope minimizes
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Tube Design of Integrated EDS Evacuated Tube Transportation System
2023 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD), 2023Hong-Fu Shi +3 more
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A new evacuated CPC collector tube
Solar Energy, 1982J.J. O'Gallagher +4 more
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