A cold plate (100, 300) comprising: a plate body (110, 310) having a thermal conductive side (112, 312); a plurality of parallel hollow fluid channels (120, 320) running inside the plate body (110, 310); at least one fluid inlet (130, 330) in direct fluid communication with a first subset (122, 322) of the plurality of parallel hollow fluid channels (120, 320); at least one fluid outlet in direct fluid communication with a second subset (124, 324) of the plurality of parallel hollow fluid channels (120, 320); and a porous thermal conductive structure (150, 350) which is arranged inside the plate body (110, 310) to fluidly connect the first subset (122, 322) of the plurality of parallel hollow fluid channels (120, 320) to the second subset (124, 324) of the plurality of parallel hollow fluid channels (120, 320), and which is in thermal contact with the thermal conductive side (112, 312) of the plate body (110, 310), wherein the porous thermal conductive structure (150, 350) comprises a plurality of elongate fluid contact surface regions (152, 352), each elongate fluid contact surface region (152, 352) extending continuously lengthwise along a longitudinal side of a respective fluid channel (120, 320) for more than half a length of the longitudinal side to serve as a fluid interface between the porous thermal conductive structure (150, 350) and an interior volume of the respective hollow fluid channel; wherein the porous thermal conductive structure (150, 350) comprises one or more elongate portions (154, 354), each elongate portion (154, 354) having two elongated fluid contact surface regions (152, 352) on two opposite longitudinal sides of the elongate portion (154, 354); wherein the plate body (110, 310) comprises an inner cavity (114, 314) and the porous thermal conductive structure (150, 350) is disposed in the inner cavity (114, 314) of the plate body (110, 310) in a manner so as to divide the inner cavity (114, 314) into the plurality of parallel hollow fluid channels (120, 320); wherein the inner cavity (114, 314) has a uniform height and the porous thermal conductive structure (150, 350) has a uniform thickness; wherein the height of the inner cavity (114, 314) is equal to the thickness of the porous thermal conductive structure (150, 350); characterized in that the inner cavity (114, 314) has at least one alignment element along a side wall of the inner cavity (114, 314) and the porous thermal conductive structure (150, 350) has a corresponding alignment element. a plate body (110, 310) having a thermal conductive side (112, 312); a plurality of parallel hollow fluid channels (120, 320) running inside the plate body (110, 310); at least one fluid inlet (130, 330) in direct fluid communication with a first subset (122, 322) of the plurality of parallel hollow fluid channels (120, 320); at least one fluid outlet in direct fluid communication with a second subset (124, 324) of the plurality of parallel hollow fluid channels (120, 320); and a porous thermal conductive structure (150, 350) which is arranged inside the plate body (110, 310) to fluidly connect the first subset (122, 322) of the plurality of parallel hollow fluid channels (120, 320) to the second subset (124, 324) of the plurality of parallel hollow fluid channels (120, 320), and which is in thermal contact with the thermal conductive side (112, 312) of the plate body (110, 310), wherein the porous thermal conductive structure (150, 350) comprises a plurality of elongate fluid contact surface regions (152, 352), each elongate fluid contact surface region (152, 352) extending continuously lengthwise along a longitudinal side of a respective fluid channel (120, 320) for more than half a length of the longitudinal side to serve as a fluid interface between the porous thermal conductive structure (150, 350) and an interior volume of the respective hollow fluid channel; wherein the porous thermal conductive structure (150, 350) comprises one or more elongate portions (154, 354), each elongate portion (154, 354) having two elongated fluid contact surface regions (152, 352) on two opposite longitudinal sides of the elongate portion (154, 354); wherein the plate body (110, 310) comprises an inner cavity (114, 314) and the porous thermal conductive structure (150, 350) is disposed in the inner cavity (114, 314) of the plate body (110, 310) in a manner so as to divide the inner cavity (114, 314) into the plurality of parallel hollow fluid channels (120, 320); wherein the inner cavity (114, 314) has a uniform height and the porous thermal conductive structure (150, 350) has a uniform thickness; wherein the height of the inner cavity (114, 314) is equal to the thickness of the porous thermal conductive structure (150, 350); characterized in that the inner cavity (114, 314) has at least one alignment element along a side wall of the inner cavity (114, 314) and the porous thermal conductive structure (150, 350) has a corresponding alignment element.