Abstract: Disclosed is a monitoring method for monitoring the film thickness of a lubricant within a lubricated bearing, the bearing having an inner ring, an outer ring and rolling elements being arranged between the inner ring and the outer ring/ The monitoring method comprises a capacitance measuring step for measuring the total capacitance of the bearing; a first calculation step for determining a film thickness of the lubricant based on the measured capacitance of the bearing and for determining whether the lubrication condition is fully flooded or starved, and when the lubrication condition is fully flooded, a second calculation step for correcting the film thickness determined in the first calculation step.

Abstract: System for determining rheological properties of grease, includes a grease worker having a cylinder intended to contain the grease and a piston intended to move inside the cylinder in a first direction and in a second opposite direction and provided with holes. The grease worker further including a seal provided between the piston and the cylinder, force for measuring the force required to push the grease through the holes of the piston is measured an electrical motor and an eccentrical connection transforming the rotating motion of the motor in a translation motion pushes the grease thought the holes, a thermocouple for measuring a temperature of the cylinder, a fan and a heater for regulating temperature for maintaining constant the measured temperature at a predetermined temperature, and a computing unit configured to determine at least one rheological property of the grease from the measured forces and from the seal friction.

Abstract: The present invention is directed to a method of operating an adsorption compressor system, which system comprises a hot source and a cold source and at least a first and a second adsorption bed, wherein the first bed has an initial temperature that is lower than the initial temperature of said second bed, in which system heat is circulated using a heat transfer fluid (HTF), the method comprising the following phases: phase A) comprising the steps of: heating the first adsorption bed by feeding HTF to it, coming from said second bed, optionally via said hot source, while maintaining a thermal wave in said first bed; and cooling the second adsorption bed by feeding HTF to it, coming from said first bed, optionally via said cold source, while maintaining a thermal wave in said second bed; wherein phase A) is maintained until the exit temperature of said first bed and said second bed are essentially the same and phase B) comprising the steps of: feeding the HTF effluent of said first bed to said hot sourc

Abstract: An adsorption cell suitable for a thermal wave operated adsorption compressor comprising an elongated solid adsorption material extending along an axis, the elongated solid adsorption material and an elongated heat transfer fluid (HTF) channel in direct heat transferring contact with the outside surface of the solid adsorption material. The adsorption material is formed by a stack of units, i.e. pills of adsorption material. Each pill is accommodated in an associated cup from a heat conductive material. The surface conformity and roughness of the bottom of pill of the unit and of top of the pill of the adjacent unit on the one hand and of the cup bottom wall on the other hand are such that any gap between the abutting bottom and cup bottom wall and the abutting top and cup bottom wall is less than 30 micron, preferably less than 10 micron.

Abstract: An adsorption cell suitable for a thermal wave operated adsorption compressor comprising an elongated solid adsorption material extending along an axis, the elongated solid adsorption material and an elongated heat transfer fluid (HTF) channel in direct heat transferring contact with the outside surface of the solid adsorption material. The adsorption material is formed by a stack of units, i.e. pills of adsorption material. Each pill is accommodated in an associated cup from a heat conductive material. The surface conformity and roughness of the bottom of pill of the unit and of top of the pill of the adjacent unit on the one hand and of the cup bottom wall on the other hand are such that any gap between the abutting bottom and cup bottom wall and the abutting top and cup bottom wall is less than 30 micron, preferably less than 10 micron.

Abstract: The present invention is directed to a method of operating an adsorption compressor system, which system comprises a hot source and a cold source and at least a first and a second adsorption bed, wherein the first bed has an initial temperature that is lower than the initial temperature of said second bed, in which system heat is circulated using a heat transfer fluid (HTF), the method comprising the following phases: phase A) comprising the steps of: heating the first adsorption bed by feeding HTF to it, coming from said second bed, optionally via said hot source, while maintaining a thermal wave in said first bed; and cooling the second adsorption bed by feeding HTF to it, coming from said first bed, optionally via said cold source, while maintaining a thermal wave in said second bed; wherein phase A) is maintained until the exit temperature of said first bed and said second bed are essentially the same and phase B) comprising the steps of: feeding the HTF effluent of said first bed to said hot sourc

Abstract: The invention is directed to an adsorption cell suitable for a thermal wave operated adsorption compressor comprising: an elongated solid adsorption material; an elongated heat transfer fluid (HTF) channel in direct heat transferring contact with the outside surface of the solid adsorption material, wherein the characteristic dimension r (e.g. the radius) and the length L of said adsorption material are chosen such that L/r>10, more preferably larger than 15, most preferably larger than 20.