Abstract: In an exhaust train for an internal combustion engine having an integrated thermoelectric generator, the exhaust train has at least one duct, through which exhaust gas flows and in which at least one thermoelectric module is arranged in such a way that the hot side of the thermoelectric module is in direct contact with the exhaust gas, while the cold side of the thermoelectric module is cooled by means of a heat transfer medium.

Abstract: A thermoelectric generator includes a thermoelectric module and a micro heat exchanger. The thermoelectric module includes p- and n-conducting thermoelectric material pieces which are alternately connected to one another via electrically conductive contacts. The thermoelectric module is thermally conductively connected to a micro heat exchanger. The micro heat exchanger includes a plurality of continuous channels having a diameter of at most 1 mm, through which a fluid heat exchanger medium can flow.

Abstract: In a method for producing form bodies for heat exchangers, comprising a thermomagnetic material, said form bodies having channels for passage of a fluid heat exchange medium, a powder of the thermomagnetic material is introduced into a binder, the resulting molding material is applied to a carrier by printing methods, and the binder and if appropriate a carrier are removed subsequently and the resulting green body is sintered.

Abstract: What is described is the use of alcohols, alcoholamines, diols, polyols or mixtures thereof in heat carrier media or as heat carrier media which are in contact with magnetocaloric materials.

Abstract: Provided is a packed heat exchanger bed composed of thermomagnetic material particles having a mean particle diameter of 50 ?m to 1 mm. The packed bed has porosity of 30-45%. A thermomagnetic material is a metal containing material such as (AyB1-y)2+?CwDxEz, La(FexAl1-x)13Hy or La(FexSi1-x)13Hy, La(FexAlyCoz)13 or La(FeSiyCoz)13, LaMnxFe2-xGe, Heusler alloys, Gd5(SixGe1-x)4, Fe2P-based compounds, manganites of the perovskite type, Tb5(Si4-xGex), XTiGe, Mn2-xZxSb, or Mn2ZxSb1-x, wherein A- E, P, and Z represent various metal atoms.

Abstract: Provided is a packed heat exchanger bed composed of thermomagnetic material particles having a mean particle diameter of 50 ?m to 1 mm. The packed bed has porosity of 30-45%. A thermomagnetic material is a metal containing material such as (AyB1?y)2+?CwDxEz, La(FexAl1?x)13Hy or La(FxSi1?x)13Hy, La(FexAlyCoz)13 or La(FexSiyCoz)13, LaMnxFe2?xGe, Heusler alloys, Gd5(SixGe1?x)4, Fe2P-based compounds, manganites of the perovskite type, Tb5(Si4?xGex), XTiGe, Mn2?xZxSb, or Mn2ZxSb1?x, wherein A-E, P, and Z represent various metal atoms.

Abstract: Process for preparing 1,3-disubstituted imidazolium salts of the formula I where R1 and R3 are each, independently of one another, an organic radical having from 1 to 20 carbon atoms, R2, R4 and R5 are each, independently of one another, an H atom or an organic radical having from 1 to 20 carbon atoms, X is the anion of a hydrogen acid having a pKa of at least 2 (measured at 25° C., 1 bar in water or dimethyl sulfoxide) and n is 1, 2 or 3, wherein a) an ?-dicarbonyl compound, an aldehyde, an amine and the hydrogen acid of the anion X? are reacted with one another and b) the reaction is carried out in water, a solvent which is miscible with water or a mixture thereof.

Abstract: What is described is the use of alcohols, alcoholamines, diols, polyols or mixtures thereof in heat carrier media or as heat carrier media which are in contact with magnetocaloric materials.

Abstract: What is described is the use of alcohols, alcoholamines, diols, polyols or mixtures thereof in heat carrier media or as heat carrier media which are in contact with magnetocaloric materials.

Abstract: In an exhaust train for an internal combustion engine having an integrated thermoelectric generator, the exhaust train has at least one duct, through which exhaust gas flows and in which at least one thermoelectric module is arranged in such a way that the hot side of the thermoelectric module is in direct contact with the exhaust gas, while the cold side of the thermoelectric module is cooled by means of a heat transfer medium.

Abstract: A thermomagnetic generator which converts thermal energy to electrical energy without intermediate conversion to mechanical work and which works at temperatures in the range from ?20° C. to 200° C. comprises a thermomagnetic material selected from, for example, (1) compounds of the general formula (I) (AyBy?1)2+?CwDxEz??(I) where A is Mn or Co, B is Fe, Cr or Ni, C, D and E at least two of C, D and E are different, have a non-vanishing concentration and are selected from P, B, Se, Ge, Ga, Si, Sn, N, As and Sb, where at least one of C, D and E is Ge or Si, ? is a number in the range from ?0.1 to 0.1, w, x, y, z are numbers in the range from 0 to 1, where w+x+z=1.

Abstract: A method for applying at least one layer, selected from diffusion barriers, further protective layers, adhesion promoters, solders and electrical contacts, onto thermoelectric materials, is characterized by the fact that the at least one layer is rolled or pressed onto the thermoelectric material at a temperature at which the thermoelectric material is flowable.

Abstract: The use of 1,3-substituted imidazolium salts of the formula I in which R1 and R3 independently of one another are an organic radical having 1 to 20 C atoms, R2, R4, and R5 independently of one another are an H atom or an organic radical having 1 to 20 C atoms, it also being possible for R4 and R5 together to form an aliphatic or aromatic ring, and X is a dicyanamide anion as latent catalysts for curing compositions comprising epoxy compounds.

Abstract: 1,3-substituted imidazolium salts of the formula I are used as latent catalysts for curing compostions comprising epoxy compounds: in which: R1 and R3 independently of one another are an organic radical having 1 to 20 C atoms; R2, R4, and R5 independently of one another are an H atom or an organic radical having 1 to 20 C atoms, it also being possible for R4 and R5 together to form an aliphatic or aromatic ring; X is the anion of a phosphorus oxyacid, and n is 1, 2 or 3.

Abstract: The use of 1,3-substituted imidazolium salts of the formula I in which R1 and R3 independently of one another are an organic radical having 1 to 20 C atoms, R2, R4, and R5 independently of one another are an H atom or an organic radical having 1 to 20 C atoms, it also being possible for R4 and R5 together to form an aliphatic or aromatic ring, and X is a thiocyanate anion as latent catalysts for curing compositions comprising epoxy compounds.

Abstract: In a thermoelectric module consisting of p- and n-conducting thermoelectric material pieces which are alternately connected to one another via electrically conductive contacts, the thermoelectric module (19) is thermally conductively connected to a micro heat exchanger (13) which comprises a plurality of continuous channels having a diameter of at most 1 mm, through which a fluid heat exchanger medium can flow.

Abstract: What is described is the use of alcohols, alcoholamines, diols, polyols or mixtures thereof in heat carrier media or as heat carrier media which are in contact with magnetocaloric materials.

Abstract: In a method for producing form bodies for heat exchangers, comprising a thermomagnetic material, said form bodies having channels for passage of a fluid heat exchange medium, a powder of the thermomagnetic material is introduced into a binder, the resulting molding material is applied to a carrier by printing methods, and the binder and if appropriate a carrier are removed subsequently and the resulting green body is sintered.

Abstract: The use of 1,3-substituted imidazolium salts of the formula I in which R1 and R3 independently of one another are an organic radical having 1 to 20 C atoms, R2, R4, and R5 independently of one another are an H atom or an organic radical having 1 to 20 C atoms, it also being possible for R4 and R5 together to form an aliphatic or aromatic ring, X is an anion having a pKb of less than 13 (measured at 25° C., 1 bar in water or dimethyl sulfoxide), and n is 1, 2 or 3, with the exception as imidazolium salts of 1-ethyl-2,3-dimethylimidazolium acetate and 1-ethyl-2,3-dimethylimidazolium acetate-acetic acid complex, as latent catalysts for curing compositions comprising epoxy compounds.

Abstract: A thermomagnetic generator which converts thermal energy to electrical energy without intermediate conversion to mechanical work and which works at temperatures in the range from ?20° C. to 200° C. comprises a thermomagnetic material selected from, for example, (1) compounds of the general formula (I) (AyBy?1)2+?CwDxEz??(I) where A is Mn or Co, B is Fe, Cr or Ni, C, D and E at least two of C, D and E are different, have a non-vanishing concentration and are selected from P, B, Se, Ge, Ga, Si, Sn, N, As and Sb, where at least one of C, D and E is Ge or Si, ? is a number in the range from ?0.1 to 0.1, w, x, y, z are numbers in the range from 0 to 1, where w+x+z=1.