Abstract: A device for quantifying a useful thermal energy available in a tank for storing a heated or cooled fluid or solid includes: a plurality of thermoelectric converters configured to be distributed in plural locations of the storage tank; an electric circuit interconnecting the thermoelectric converters; a device measuring a single electrical variable of the electric circuit; and a converter converting a single measurement of the single electrical variable into a value for quantification of the useful thermal energy available in the storage tank.

Abstract: A system for exchanging heat from a working fluid to a receiving fluid, which includes: a device for transmitting kinetic energy from a working fluid to a receiving fluid, the device including: a circulator suitable for circulating the receiving fluid; a turbine suitable for being driven by the circulation of the working fluid; and a shaft coupling the turbine to the circulator; a heat transfer system for transferring heat from the working fluid by heat transfer from the receiving fluid; and a mixing system for mixing the receiving fluid and the heated working fluid.

Abstract: A device for quantifying a useful thermal energy available in a tank for storing a heated or cooled fluid or solid includes: a plurality of thermoelectric converters configured to be distributed in plural locations of the storage tank; an electric circuit interconnecting the thermoelectric converters; a device measuring a single electrical variable of the electric circuit; and a converter converting a single measurement of the single electrical variable into a value for quantification of the useful thermal energy available in the storage tank.

Abstract: Briefly described, embodiments of this disclosure, among others, include vortex vapor compression refrigeration (VCR) systems and methods of cooling.

Abstract: Briefly described, embodiments of this disclosure include thermal management devices, systems, and methods, convection cooling devices, convection cooling systems, convection cooling methods, hybrid convection/desorption cooling devices, hybrid convection/desorption cooling systems, hybrid convection/desorption cooling methods, are disclosed.

Abstract: Briefly described, embodiments of this disclosure include thermal management devices, systems, and methods, convection cooling devices, convection cooling systems, convection cooling methods, hybrid convection/desorption cooling devices, hybrid convection/desorption cooling systems, hybrid convection/desorption cooling methods, are disclosed.

Abstract: A tiller for a pedestrian-controlled fork-lift truck, comprising a hollow tiller rod which has its lower end hinged to a support for a steerable wheel and has its other end connected to a loop-shaped handle which, at the rear end, has a gripping portion extending crosswise to the tiller rod, a retaining extension extending into the interior of the handle as an elongation of the tiller rod, a handle means pivotally supported by the retaining extension which is coupled to a lifting means via a pusher or puller element within the tiller rod, wherein the handle means having an intermediate neutral pivoting position and two opposed pivoting positions in which it actuates the lifting means for a lifting or lowering operation, characterized in that the handle means is a loop-shaped elongated gripping element including two approximately parallel extending long element portions which extend crosswise to the tiller axis, and two curved, short element portions (interconnecting the long element portions which are located

Abstract: Briefly described, embodiments of this disclosure, among others, include vortex vapor compression refrigeration (VCR) systems and methods of cooling.

Abstract: A tiller for a pedestrian-controlled fork-lift truck, comprising a hollow tiller rod which has its lower end hinged to a support for a steerable wheel and has its other end connected to a loop-shaped handle which, at the rear end, has a gripping portion extending crosswise to the tiller rod, a retaining extension extending into the interior of the handle as an elongation of the tiller rod, a handle means pivotally supported by the retaining extension which is coupled to a lifting means via a pusher or puller element within the tiller rod, wherein the handle means having an intermediate neutral pivoting position and two opposed pivoting positions in which it actuates the lifting means for a lifting or lowering operation, characterized in that the handle means is a loop-shaped elongated gripping element including two approximately parallel extending long element portions which extend crosswise to the tiller axis, and two curved, short element portions (interconnecting the long element portions which are located