A baffle component (210, 310) for a batch reactor (102, 202) comprising: a cage element (216, 316); and at least one baffle (212, 312, 512) mounted on the cage element (216, 316); wherein the at least one baffle (212, 312, 512) comprises: a plate component that is adapted or shaped to form an outside surface of the baffle (212, 312, 512); a tubular element; wherein the plate component and the tubular component together form a sealed interior volume of the baffle (212, 312, 512); the sealed interior volume of the baffle (212, 312, 512) is wholly or partially filled with a thermal exchange material; the thermal exchange material facilitates thermal energy transfer between a thermal transfer medium (207, 307, 507) inside the tubular element and the plate component; and wherein the thermal exchange material comprises one or more solid materials, wherein the baffle component (210, 310) is affixable or clampable to a removable top cover of the batch reactor (102, 202), wherein the cage element (216, 316) is comprised of a number of individual elements that are mutually attached to form a structure to which the at least one baffle (212, 312, 512) is mounted, wherein each of the individual elements are formed as tubular elements and are arranged so as to allow the thermal transfer medium (207, 307, 507) to be guided to and from the at least one baffle (212, 312, 512). a cage element (216, 316); and at least one baffle (212, 312, 512) mounted on the cage element (216, 316); wherein the at least one baffle (212, 312, 512) comprises: a plate component that is adapted or shaped to form an outside surface of the baffle (212, 312, 512); a tubular element; wherein the plate component and the tubular component together form a sealed interior volume of the baffle (212, 312, 512); the sealed interior volume of the baffle (212, 312, 512) is wholly or partially filled with a thermal exchange material; the thermal exchange material facilitates thermal energy transfer between a thermal transfer medium (207, 307, 507) inside the tubular element and the plate component; and wherein the thermal exchange material comprises one or more solid materials, a plate component that is adapted or shaped to form an outside surface of the baffle (212, 312, 512); a tubular element; wherein the plate component and the tubular component together form a sealed interior volume of the baffle (212, 312, 512); the sealed interior volume of the baffle (212, 312, 512) is wholly or partially filled with a thermal exchange material; the thermal exchange material facilitates thermal energy transfer between a thermal transfer medium (207, 307, 507) inside the tubular element and the plate component; and wherein the thermal exchange material comprises one or more solid materials, wherein the baffle component (210, 310) is affixable or clampable to a removable top cover of the batch reactor (102, 202), wherein the cage element (216, 316) is comprised of a number of individual elements that are mutually attached to form a structure to which the at least one baffle (212, 312, 512) is mounted, wherein each of the individual elements are formed as tubular elements and are arranged so as to allow the thermal transfer medium (207, 307, 507) to be guided to and from the at least one baffle (212, 312, 512).