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This work addresses the detection of hydrogen stable isotopes, deuterium and protium, an important consideration towards safety matters in the design and operation of industrial facilities (e.g. heavy water detritiation plants), using a reliable and low cost sensor structure. The presented sensor platform approach is based on deposition of a hydrogen high affinity metal, namely palladium (Pd), on...
In this work we report synthesis and characterization of integrated SWCNT-Pt-P2O5-based sensors for absolute humidity (AH) measurement. The sensors were obtained by direct deposition of an active doped layer to the surface of an interdigitated planar sensor type, by drop cast method. For the experimental investigation two sensors with the same active layer were fabricated and tested for detecting...
An integrated SWCNT-Pt-P2O5-based sensor type was fabricated by direct deposition of the films on a commercial planar sensor substrate without any conventional coating and using the dropcast procedure. For the humidity sensing experimental work, two sensors were prepared by the authors using this facile solution and a system for data acquisition. The measurements showed that the integrated SWCNT sensors...
A resistive structure designed with graphene, thin 2D monoatomic layers of graphite, was deposited by dropcast method from a solution, on a ceramic substrate, between Copper electrodes. The obtained structure is proposed as temperature sensor and was tested in the cryogenic field down to 77K. The obtained numerical results from this investigation are compared with previous experimental results of...
Slush nitrogen is a two phase combination of solid nitrogen in liquid nitrogen. The measurement of mass flow rate of this mixture can be of interest for various applications due to the greater cooling performance, greater compactness and lighter weight. The development of a prototype of slush nitrogen (two-phase) capacitance type flow meter is presented in this work, together with the technological...
This paper outlines a method of continuous and direct level measurement of cryogenic fluid applicable to a completely immersed cryogenic pump. There are many industrial and scientific processes requiring the knowledge of liquid level in various devices useful for special applications. A particularly case is given by the need of pumping cryogenic liquid from different Dewar vessels with separate locations,...
The measurement of mass flow rate of the two-phase cryogenic flow is attracting a lot of interest lately due to the possible special applications for the fluids it measures. The combination solid/liquid hydrogen or slush hydrogen, solid/liquid nitrogen or slush nitrogen are only few of the two phase cryogenic flow that can be of interest for various applications because of the greater cooling performance,...
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