Denso Corporation

Toyota Jidosha Kabushiki Kaisha

Nagoya University

Denso Corpora Tion

Takuya Fuse

Shinya Kasamatsu

Kazutoshi Kuwayama

Naoki Watanabe

Tsuyoshi Morimoto

Yasushi Kouno

Eiichi Okuno

Kazutoshi Nishizawa

Kouji Inagaki

Yasushi Kono

Saori Nakajima

Ryuta Kobayakawa

Shinichi Yatsuzuka

Motohiko Ueda

Yoshiki Kato

Yukikatsu Ozaki

Yasumasa Hagiwara

Satoshi Ito

Masakatsu Tsubouchi

Hideaki Sato

Manabu Orihashi

Yuu Watanabe

Naoya Makimoto

Hisao Nagashima

Yuichi Ohno

Kazutoshi Nishinakamura

Shigeo Nomura

Hajime Shingai

Touru Kawaguchi

Tadahiro Nakagawa

Koutarou Mizunuma

Hirokazu Ohyabu

Koichi Yanagisawa

Mitsuhiro Kubota

Ryo Yamanouchi

A heat transfer medium for transferring heat from a vehicle driving battery that generates heat during charging and discharging includes a liquid base material, an orthosilicic acid ester compatible with the base material, and an ion adsorbent dispersed in the base material. The ion adsorbent is formed of a plurality of solid particles and adsorbs at least one of anions and cations present in the heat transfer medium.

Heat transfer medium and thermal management system

A vehicle thermal management system mounted in a vehicle includes a vehicle driving battery, a liquid heat transfer medium, a heat receiver, and a radiator. The heat receiver causes the heat transfer medium to receive heat through heat exchange with the battery. The radiator causes the heat transfer medium to release the heat through heat exchange with an air outside of the vehicle. The heat transfer medium includes a liquid base material including water and an orthosilicic acid ester compatible with the liquid base material and does not include an ionic rust inhibitor. The orthosilicic acid ester is present, as a concentration of silicon, relative to a total mass of the heat transfer medium within a range between 2000 mass ppm, non-inclusive, and 10000 mass ppm, inclusive.

Vehicle thermal management system, heat transfer medium and method for cooling vehicle driving battery

A vehicle thermal management system includes a vehicle driving battery that generates heat during charging and discharging and a liquid heat transfer medium that transfers heat received from the battery. The system further includes a heat receiver that causes the heat transfer medium to receive heat through heat exchange with the battery and that includes a portion in contact with the heat transfer medium and made of a material containing aluminum. The system further includes a refrigerant heat exchanger that causes the heat transfer medium to release heat through heat exchange with a refrigerant and that includes a portion in contact with the heat transfer medium and made of a material containing aluminum. The heat transfer medium includes a liquid base material including water, an orthosilicic acid ester compatible with the liquid base material, and an azole derivative and has an electric insulation property.

An energy conversion system includes an energy converter, a cold generator, and a liquid water obtainer. The energy converter is configured to convert energy of a source from one form to another form and generate heat and water vapor. The cold generator is configured to generate cold using the heat generated by the energy converter. The liquid water obtainer is configured to condense the water vapor using the cold to obtain liquid water. Accordingly, the water vapor generated from the energy converter can be cooled efficiently. Therefore, efficiency in obtaining the liquid water can be improved compared with a case where the water vapor is cooled by open air.

Energy conversion system

A refrigeration cycle device includes a high-temperature side heat exchanger, an expansion valve for decompressing the refrigerant flowing out of the high-temperature side heat exchanger, a low-temperature side heat exchanger that exchanges heat between the refrigerant decompressed by the expansion valve and coolant, a high-temperature coolant circuit in which the coolant circulates to the high-temperature side heat exchanger, a low-temperature coolant circuit in which the coolant circulates to the low-temperature side heat exchanger, a battery and a low-temperature side radiator configured to exchange heat with the coolant in the low-temperature coolant circuit; and a heat transfer portion configured to transfer heat from the high-temperature coolant circuit to the low-temperature coolant circuit such that the coolant dissipates heat in the battery and the low-temperature side radiator.

Refrigeration cycle device

During a normal operation, a refrigeration cycle device is switched to a refrigerant circuit in which heat contained in a high-pressure refrigerant flowing out of an interior radiator is stored in a heat storage member. When frost is formed on an evaporator, the refrigeration cycle device is switched to another refrigerant circuit in which the exterior heat exchanger is heated and defrosted using heat stored in the heat storage member as a heat source. The heat storage member uses a material formed by adding W (tungsten) as an additive to VO(vanadium dioxide) which is a transition metal oxide having a property of a phase transition between a metal and an insulator. The heat storage member effectively stores or dissipates heat depending on a temperature zone of the refrigerant, thereby suppressing an increase in energy consumption of a compressor.

An energy conversion device includes a first acoustic wave generator, a second acoustic wave generator, and an output unit which are provided in a pipe member. The first acoustic wave generator has a thermal energy generator configured to generate thermal energy from electric energy, and converts the thermal energy generated by the thermal energy generator into acoustic energy to generate acoustic wave in working gas by a self-excited thermo acoustic vibration. The second acoustic wave generator converts thermal energy supplied from a heat supply source into acoustic energy and generates acoustic wave in working gas by a self-excited thermo acoustic vibration. The output unit converts the acoustic energy of the acoustic waves from the first acoustic wave generator and the second acoustic wave generator into cold energy to output.

Energy conversion device

A heat exchanger has (i) a first passage in which a first fluid flows, (ii) a heat storage body that is thermally connected to the first passage and stores a warm heat or a cold heat, and (iii) a second passage that is thermally connected to both of the first passage and the heat storage body, the second passage in which a second fluid flows. The heat storage body changes to a first phase in a solid state when a temperature of the heat storage body is lower than or equal to a phase transition temperature, and changes to a second phase in a solid state when the temperature of the heat storage body exceeds the phase transition temperature. The heat storage body stores or dissipates heat depending on a phase transition between the first phase and the second phase.

Heat exchanger

A heat storage system has a heat source that generates heat and releases the heat to a first heat medium and a heat storage body that stores heat. The heat storage body changes to a first phase in a solid state when a temperature of the heat storage body is lower than or equal to a phase transition temperature, and changes to a second phase in a solid state when a temperature of the heat storage body exceeds the phase transition temperature. The heat storage body stores or releases heat due to a phase transition between the first phase and the second phase. A mode of operation of the heat storage body is switchable between a heat storage mode in which the heat storage body stores heat of the first heat medium and a heat release mode in which the heat storage body releases the heat stored in the heat storage body to a heat transfer target.

Heat storage system

A heat transfer system has an energy converter, a heat transfer medium, a transfer part, and a heat exchanger. The energy converter converts an energy of an energy source into an energy in a different state and generates a heat while converting the energy. The heat transfer medium is in a liquid state and receives the heat from the energy converter. The heat exchanger dissipates the heat from the heat transfer medium to an outside of the heat transfer system. The heat transfer medium contains HO and a solute compatible with the HO. The solute has a molecular structure including two hydroxyl groups. A length of a binding chain between an oxygen atom of one of the two hydroxyl groups and an oxygen atom of an other of the two hydroxyl groups is shorter than a length of a binding chain between two hydroxyl groups of an ethylene glycol molecule.

Heat transfer system

An energy management system is applied to a vehicle having a first power source, a first converter, an electricity storage part, and a second power source. The energy management system has a second converter, a heat storage part, a mode switching part, and a controller. The mode switching part switches between a heat storage mode and a heat radiation mode. The heat storage part changes to a first phase in a solid state when a temperature of the heat storage part is lower than or equal to a phase transition temperature, and changes to a second phase in a solid state when a temperature of the heat storage part exceeds the phase transition temperature. The controller controls the operations of the second converter and the mode switching part based on at least one of an electricity storage condition of the electricity storage part and a conversion condition of the first converter.

Energy management system

A composite heat storage material includes a heat storage material and an inorganic material. The heat storage material is made of a strongly correlated electron material that stores and dissipates heat via solid-solid phase transition. The inorganic material is different from the material of the heat storage material. The heat storage material and the inorganic material are mixed. The composite heat storage material can have characteristics of both the heat storage material and the inorganic material.

Composite heat storage material

A heat storage unit or a heat storage system is a heat storage unit including: a heat storage portion having a first material with a strongly correlated electron system material; and a heat conduction portion having a second material higher in a thermal conductivity than the first material and being in contact with the heat storage portion. The heat storage unit may have a laminated structure in which the heat storage portion and the heat conduction portion are alternately laminated on each other. For example, a metal-insulator phase transition material or a transition metal oxide may be used as the strongly correlated electron system material. The second material may be metal or ceramics.

Heat storage unit and heat storage system

A magneto-caloric-effect element has a plurality of element units. The element units have lengths, respectively. The element units have different Curie temperatures, respectively. The element units demonstrate magneto-caloric effects. Two adjoining performance distribution crosses at a cross temperature. A temperature in the rated operational status between two adjoining element units is called a boundary temperature. The lengths and/or Curie temperatures are set so that the boundary temperatures and the cross temperatures coincide each other. Thereby, a plurality of element units can function at high effectiveness in the rated operational status.

Magneto-caloric effect element and thermo-magnetic cycle apparatus

A heat storing system includes: a heat source that emits heat to a first thermal medium; and a heat storing unit. The heat storing unit includes a heat storing body container housing a heat storing body, and a thermal medium container housing a liquid phase thermal medium. The heat storing body stores or emits heat in accordance with phase change of the heat storing body. The heat storing unit is configured to conduct a cold heat emission mode in which the liquid phase thermal medium and a cooling medium exchange heat in the thermal medium container to evaporate the thermal medium such that cold heat is emitted to the cooling medium.

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Kariya, Japan

Takuya Fuse