The present invention provides enthalpy exchanger elements (E, E′) and enthalpy exchangers comprising such elements. Furthermore, the invention discloses a method for producing such enthalpy exchanger elements and enthalpy exchangers, comprising the steps of a) providing an air-permeable sheet element (1); b) laminating at least one side (1a, 1b) of the sheet element (1) with a thin polymer film (3, 4) with water vapor transmission characteristics; and c) forming the laminated sheet element (1) into a desired shape exhibiting a three-dimensional corrugation pattern (5, 5, . . . ).

A power generation system, includes: a fuel cell that includes a negative electrode and a positive electrode and is configured to generate electric power by chemical reaction between hydrogen and oxygen; a separator that includes an oxygen-permselective separation membrane and is configured to obtain permeated gas and non-permeated gas from mixed gas; and a positive electrode gas supply passage through which the mixed gas is supplied to the separator and the obtained permeated gas is supplied to the positive electrode. The separation membrane includes a porous support layer and a separation functional layer provided on the porous support layer. The separation functional layer contains at least one kind of chemical compound selected from the group consisting of polyamide, graphene, MOF (Metal Organic Framework), and COF (Covalent Organic Framework).

A power generation system, includes: a fuel cell that includes a negative electrode and a positive electrode and is configured to generate electric power by chemical reaction between hydrogen and oxygen; a separator that includes an oxygen-permselective separation membrane and is configured to obtain permeated gas and non-permeated gas from mixed gas; and a positive electrode gas supply passage through which the mixed gas is supplied to the separator and the obtained permeated gas is supplied to the positive electrode. The separation membrane includes a porous support layer and a separation functional layer provided on the porous support layer. The separation functional layer contains at least one kind of chemical compound selected from the group consisting of polyamide, graphene, MOF (Metal Organic Framework), and COF (Covalent Organic Framework).

A power generation system, includes: a fuel cell that includes a negative electrode and a positive electrode and is configured to generate electric power by chemical reaction between hydrogen and oxygen; a separator that includes a hydrogen-permselective separation membrane and is configured to obtain permeated gas and non-permeated gas from mixed gas; and a negative electrode gas supply passage configured to supply the mixed gas containing hydrogen to the separator and supply the permeated gas obtained by the separator to the negative electrode. The separation membrane includes a porous support layer and a separation functional layer provided on the porous support layer. The separation functional layer contains at least one kind of chemical compound selected from the group consisting of polyamide, graphene, MOF (Metal Organic Framework), and COF (Covalent Organic Framework).

A power generation system, includes: a fuel cell that includes a negative electrode and a positive electrode and is configured to generate electric power by chemical reaction between hydrogen and oxygen; a separator that includes a hydrogen-permselective separation membrane and is configured to obtain permeated gas and non-permeated gas from mixed gas; and a negative electrode gas supply passage configured to supply the mixed gas containing hydrogen to the separator and supply the permeated gas obtained by the separator to the negative electrode. The separation membrane includes a porous support layer and a separation functional layer provided on the porous support layer. The separation functional layer contains at least one kind of chemical compound selected from the group consisting of polyamide, graphene, MOF (Metal Organic Framework), and COF (Covalent Organic Framework).

A power generation system, includes: a fuel cell that includes a negative electrode supplied with hydrogen-containing gas and a positive electrode supplied with oxygen-containing gas, and is configured to generate electric power by chemical reaction between hydrogen and oxygen; a separator that includes a hydrogen-permselective separation membrane and is configured to obtain permeated gas and non-permeated gas from mixed gas; and a circulating passage through which negative electrode-side exhaust gas of the fuel cell is sent to the separator, and through which the permeated gas is supplied to the negative electrode. The separation membrane includes a porous support layer and a separation functional layer provided on the porous support layer. The separation functional layer contains at least one kind of chemical compound selected from the group consisting of polyamide, graphene, MOF (Metal Organic Framework), and COF (Covalent Organic Framework).

A power generation system, includes: a fuel cell that includes a negative electrode supplied with hydrogen-containing gas and a positive electrode supplied with oxygen-containing gas, and is configured to generate electric power by chemical reaction between hydrogen and oxygen; a separator that includes a hydrogen-permselective separation membrane and is configured to obtain permeated gas and non-permeated gas from mixed gas; and a circulating passage through which negative electrode-side exhaust gas of the fuel cell is sent to the separator, and through which the permeated gas is supplied to the negative electrode. The separation membrane includes a porous support layer and a separation functional layer provided on the porous support layer. The separation functional layer contains at least one kind of chemical compound selected from the group consisting of polyamide, graphene, MOF (Metal Organic Framework), and COF (Covalent Organic Framework).

Described herein are polymeric based composite membranes that provide selective resistance for gases while providing water vapor permeability. Such composite membranes have a high water/air selectivity in permeability. The methods for making such membranes and using the membranes for dehydrating or removing water vapor from gases are also described.

Described herein are polymeric based composite membranes that provide selective resistance for gases while providing water vapor permeability. Such composite membranes have a high water/air selectivity in permeability. The methods for making such membranes and using the membranes for dehydrating or removing water vapor from gases are also described.

The present invention provides a gas separation system suitable for reducing energy required to separate a gas mixture. A gas separation system of the present invention includes: a first separation membrane unit that separates a gas mixture containing carbon dioxide and nitrogen into a first permeated gas and a first non-permeated gas; a second separation membrane unit that separates the first permeated gas into a second permeated gas and a second non-permeated gas; a first decompression device that decompresses a permeation-side space of the first separation membrane unit; and a second decompression device that decompresses a permeation-side space of the second separation membrane unit.