Abstract: The hydrogen gas compressor system (104, 108, 112) comprises a hydrogen gas storage unit (502) that defines an internal volume for storing hydrogen gas. An operating fluid delivery means (514) such as a pump delivers an operating fluid to the hydrogen gas storage unit (502). This causes the pressure of the hydrogen gas contained within the hydrogen gas storage unit (502) to increase. A coolant fluid delivery means (524) such as a pump delivers a coolant fluid to the hydrogen gas storage unit to absorb heat from the hydrogen gas.

Abstract: The hydrogen gas compressor system (104, 108, 112) comprises a hydrogen gas storage unit (502) that defines an internal volume for storing hydrogen gas. An operating fluid delivery means (514) such as a pump delivers an operating fluid to the hydrogen gas storage unit (502). This causes the pressure of the hydrogen gas contained within the hydrogen gas storage unit (502) to increase. A coolant fluid delivery means (524) such as a pump delivers a coolant fluid to the hydrogen gas storage unit to absorb heat from the hydrogen gas.

Abstract: The carbon dioxide capture system 100 comprises an absorption tank 102 arranged to store a body of water. The absorption tank 102 comprises a gas inlet 104 via which gas (e.g. atmospheric air) is delivered to the tank 102 to allow for carbon dioxide contained within the gas to dissolve into the body of water. The system 100 further comprises a first fluid delivery means 114 arranged to withdraw water from the absorption tank 102. The withdrawn water may be delivered to a desorption tank 118 via a heat transfer unit 116 to allow for the withdrawn water to be heated to a higher temperature. A heater 122 may also raise the temperature of the water further. The warmed water releases carbon dioxide gas into the desorption tank 118.

Abstract: A pressure balanced valve for an expander of a Rankine cycle heat recovery system includes a valve body that extends along a longitudinal axis. The valve body includes a valve head and an intermediate flange structure spaced apart from each other along the longitudinal axis. The valve body defines an internal flow channel having at least one output port and at least one inlet port. The at least one output port of the internal flow channel is defined by a cylinder chamber side of the valve head. The at least one inlet port of the internal flow channel is defined by a valve stem side of the intermediate flange structure. The internal flow channel is operable to communicate fluid pressure between the cylinder chamber side of the valve head and the valve stem side of the intermediate flange structure.

Abstract: A method of ageing a catalyst material includes at least the steps of: (a) heating a gaseous stream; (b) adding a least one pure hydrocarbon gas and an oxygen-containing gas to the heated gaseous stream to provide a combined stream; and (c) passing the combined stream through the catalyst material. The use of at least one pure hydrocarbon gas and an oxygen-containing gas allows maximum re-circulation of the exit stream from the catalyst material for reuse, while maintaining the correct C, H and O proportions being provided in the combined stream to replicate realistic use of the catalyst material.

Abstract: A method of ageing a catalyst material includes at least the steps of: (a) heating a gaseous stream; (b) adding a least one pure hydrocarbon gas and an oxygen-containing gas to the heated gaseous stream to provide a combined stream; and (c) passing the combined stream through the catalyst material. The use of at least one pure hydrocarbon gas and an oxygen-containing gas allows maximum re-circulation of the exit stream from the catalyst material for reuse, while maintaining the correct C, H and O proportions being provided in the combined stream to replicate realistic use of the catalyst material.

Abstract: A method of ageing a catalyst material includes at least the steps of: (a) heating a gaseous stream; (b) adding a least one pure hydrocarbon gas and an oxygen-containing gas to the heated gaseous stream to provide a combined stream; and (c) passing the combined stream through the catalyst material. The use of at least one pure hydrocarbon gas and an oxygen-containing gas allows maximum re-circulation of the exit stream from the catalyst material for reuse, while maintaining the correct C, H and O proportions being provided in the combined stream to replicate realistic use of the catalyst material.

Abstract: A method of ageing a catalyst material includes at least the steps of: (a) heating a gaseous stream; (b) adding a least one pure hydrocarbon gas and an oxygen-containing gas to the heated gaseous stream to provide a combined stream; and (c) passing the combined stream through the catalyst material. The use of at least one pure hydrocarbon gas and an oxygen-containing gas allows maximum re-circulation of the exit stream from the catalyst material for reuse, while maintaining the correct C, H and O proportions being provided in the combined stream to replicate realistic use of the catalyst material.