Patent ID: 7727492

Claim:
A hydrogen storage unit comprising: one or more hydrogen storage vessels; a gas inlet for receiving a stream of compressed gas during charging of said one or more hydrogen storage vessels; a gas outlet for expelling said stream of compressed gas during charging of said one or more hydrogen storage vessels; a hydrogen storage material disposed in one or more of said hydrogen storage vessels; a primary heat transfer loop including a primary heat transfer fluid in thermal communication with said hydrogen storage material, said primary heat transfer low removing heat from said hydrogen storage material during charging of said hydrogen storage material; one or more gas driven pumps, said one or more air driven pumps being supplied with said stream of compressed gas and circulating said primary heat transfer fluid through said primary heat transfer loop during charging of said hydrogen storage material; and a secondary heat transfer loop including a secondary heat transfer fluid in thermal communication with said primary heat transfer loop and said hydrogen storage material, said primary heat transfer loop being in thermal communication with said hydrogen storage material via said secondary heat transfer loop, said secondary heat transfer fluid being circulated through said secondary heat transfer loop by said one or more air driven pumps during charging of said hydrogen storage material.