CNG Fueling System
AssigneeJ-W Power Company
InventorRichard Allan Poorman
Life of this patent
Estimating the term…
Abstract
A compressed natural gas (CNG) fueling system has a single compressor comprising a first compression stage and a subsequent compression stage, wherein the first compression stage feeds the subsequent compression stage when filling a storage tank, the storage tank is configured to receive CNG from at least one of the first compression stage and the subsequent compression stage of the compressor when filling the storage tank, a CNG feedback to the subsequent compression stage of the compressor from the storage tank, the CNG being introduced back into the compressor at a location downstream relative to an output of the first compression stage, and a first heat exchanger associated with the CNG feedback.
Claims15
A compressed natural gas (CNG) fueling system, comprising:
- a single compressor comprising a first compression stage and a subsequent compression stage, wherein the first compression stage feeds the subsequent compression stage when filling a storage tank;
- the storage tank being configured to receive CNG from at least one of the first compression stage and the subsequent compression stage of the compressor when filling the storage tank;
- a CNG feedback to the subsequent compression stage of the compressor from the storage tank, the CNG being introduced back into the compressor at a location downstream relative to an output of the first compression stage;
- and
- a first heat exchanger associated with the CNG feedback.
A method of operating a compressed natural gas (CNG) fueling system, comprising:
- providing a single compressor comprising a first compression stage and a subsequent compression stage, wherein the first compression stage feeds the subsequent compression stage when filling a storage tank;
- compressing CNG using at least one of the first compression stage and the subsequent compression stage when filling the storage tank;
- storing CNG compressed by the at least one of the first compression stage and the subsequent compression stage of the compressor in the storage tank;
- further compressing the stored CNG using the compressor by feeding the stored CNG back to the subsequent compression stage of the compressor that compressed the CNG prior to storing the CNG in the storage tank, the CNG being introduced back into the compressor at a location downstream relative to an output of the first compression stage;
- and
- providing a first heat exchanger and heating the CNG from the storage tank prior to feeding the CNG back to the subsequent compression stage.
Dependencies are inferred from the claim text.