Abstract: The invention discloses method and system of drying renewable sources of energy and raw material. The drying process is carried out under partial vacuum conditions and at lower temperatures than conventional dryers. The temperature to dry the material and the rate of water removal are controlled by regulating the degree of vacuum and the intensity of heat input. A method for drying material to moisture content below 10% by weight, comprises introducing into an ejector a stream with a pressure above ambient pressure, creating partial vacuum in a drying chamber through the secondary nozzle of the ejector when the stream enters the ejector and provides the motive pressure to the primary nozzle of the ejector, said drying chamber having an inlet into which a wet material is introduced and an outlet for taking out the dried material after the drying treatment, drying the wet material using low temperature waste heat.

Abstract: The invention provides methods and systems for reducing cost and energy consumption of gas purification processes that use physical or chemical absorbents. These methods and system provide a novel approach to vaporize process energy wastes including thermodynamic inefficiencies and waste heat by optimally integrating ejector technology into gas purification processes. These methods and systems use single-phase and/or two-phase ejectors as alternatives to mechanical compressors or pumps for recirculating fluid between vessels or as part of the cooling system associated to the gas purification processes.

Abstract: The present invention discloses groundwater heat transfer system comprising a primary pump suspended in a well and connected to at least one water supply pipe, a heat exchange system being connected to said primary pump via a secondary pump, a return pipe being connected to the heat exchange system and returning water from the heat exchange system to the well, wherein the primary pump provides motive pressure to a primary nozzle of a liquid jet ejector submerged in the well, which entrains filtered groundwater through a secondary nozzle of the liquid jet ejector, wherein the secondary pump, placed after the primary pump and before the heat exchange system, provides the remaining system head.