Expander for recovery of thermal energy from a fluid
AssigneeIng. Enea Mattei S.P.A.
InventorGiulio Contaldi
Life of this patent
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Abstract
A bladed expander for recovery of thermal energy from a working fluid, comprising, a stator provided with an inlet port and an outlet port for the working, fluid, a rotor housed within the stator, and a plurality of blades set between the rotor and the stator so as to delimit between them a plurality of compartments with variable volume that increases between the inlet port and the outlet port. The stator and the rotor are subjected to a heat exchange with a hot fluid so as to carry out a transformation of expansion during which the working fluid receives thermal energy from outside.
Claims31
A bladed expander for recovery of thermal energy from a working fluid comprising a stator provided with at least one inlet port and at least one outlet port for the working fluid, a rotor housed within the stator, and a plurality of blades set between the rotor and the stator so as to delimit between them a plurality of compartments with variable volume that increases between the inlet port and the outlet port, said expander including a heating line traversed by a hot fluid and configured so as to subject at least one between the stator and the rotor to a heat exchange with the hot fluid and to carry out on the working fluid a transformation of expansion during which the working fluid receives thermal energy from outside.
A compression and energy-recovery unit comprising a compressor driven by an electric motor and provided with an lubricating/cooling oil system, and a Rankine-cycle or Hirn-cycle recuperator having a bladed expander and uses a working fluid in at least indirect heat exchange with the lubricating/cooling oil of the compressor.
A method for recovery of thermal energy from the lubricating/cooling oil of a compressor comprising a Rankine-cycle or Hirn-cycle recuperator comprising a bladed expander and functioning with a working fluid in at least indirect heat exchange with the lubricating/cooling oil of the compressor.
Dependencies are inferred from the claim text.