9 results about "Endothermic process" patented technology

The invention discloses a preparation method of high-performance cordierite DPF honeycomb ceramic, and belongs to the technical field of honeycomb ceramic carrier preparation. The preparation method comprises the following steps: mixing raw materials; kneading mud; performing extrusion molding; drying and shaping; cutting and firing to obtain a cordierite honeycomb ceramic carrier; and performing boundary dimension processing, film covering, hole dotting, mud scraping and drying to obtain a finished product. According to the invention, aluminum hydroxide is adopted to replace or partially replace aluminum oxide in the formula of the cordierite porous ceramic structure while magnesium hydroxide is used, and the two substances can form a synergistic heat absorption mechanism by virtue of the difference of the aluminum hydroxide and magnesium hydroxide in thermal decomposition temperature, so that the heat absorption efficiency of the cordierite porous ceramic structure is greatly improved in the low-temperature coke discharge stage of a carrier mud blank. Aluminum hydroxide is subjected to a decomposition reaction before magnesium hydroxide, and then magnesium hydroxide is continuously decomposed at a higher temperature, so that the temperature range covered by the whole heat absorption process is greatly widened, the heating rate of the carrier mud blank is effectively slowed down, and thermal shock caused by sudden rising of local temperature is avoided.

To provide an air conditioning system that can be miniaturized and improve energy consumption efficiency. [Solution] The elastic heat-absorbing and heat-generating section has a heat-absorbing and heat-generating material that absorbs or generates heat by undergoing a phase change in response to the application and release of stress. The heat-conducting section that conducts heat from the heat-absorbing and heat-generating section has an extension that extends from a housing section that houses the heat-absorbing and heat-generating section and the heat-conducting section. The extension that extends from the housing section is arranged in the medium flow path through which the medium to be heat-exchanged by the heat exchanger flows, and performs heat exchange with the medium. The medium flow path comprises a cold air flow path through which the medium is cooled by the heat-absorbing device absorbing heat, and a hot air flow path through which the medium is heated by the heat-generating device. The air conditioning device further includes a drive mechanism that alternately moves the extension between the cold air flow path and the hot air flow path. When the reaction rate of the heat-absorbing and heat-generating material during heat generation is slower than the reaction rate during heat absorption, the extension is kept in the hot air flow path for a longer time, and when it is slower, it is kept in the cold air flow path for a longer time.

The utility model discloses a circulating cooling water waste heat recycling device which comprises a condenser, an air inlet of the condenser is connected with an air inlet pipeline, a water outlet of the condenser is connected with a liquid inlet of a heat pump through a liquid outlet pipeline, and the liquid outlet of the heat pump is connected with the right side of the upper portion of a heat preservation shell through a first connecting pipeline. A spiral connecting pipe is arranged in the heat preservation shell, a heating pipeline is arranged in the heat preservation shell in a penetrating mode, the spiral connecting pipe is wound on the heating pipeline, and the left side of the lower portion of the heat preservation shell is connected with one end of a circulating pump through a second connecting pipeline. The other end of the circulating pump is connected with a circulating opening of the condenser through a third connecting pipeline. The heat preservation performance of the whole heat absorption process is guaranteed, heat is prevented from being lost in the conveying process, and the heat absorption efficiency is improved.

The application discloses a kind of liquid hydrogen heavy truck heat management system heat management method, device, comprising: detecting the real-time temperature of target equipment in liquid hydrogen heavy truck heat management system, wherein target equipment at least includes one of the following: hydrogen fuel engine, cab heater core, power battery;When the real-time temperature of target equipment meets preset temperature condition, the cooling liquid circulation flow path in liquid hydrogen heavy truck heat management system is adjusted to control liquid hydrogen heavy truck heat management system to enter corresponding heat management mode.The application utilizes hydrogen fuel engine waste heat by adjusting multiple control valves, can meet the heating of power battery and the heating demand of cab;By setting up cold recovery branch, liquid hydrogen in liquid hydrogen vaporization device is quickly vaporized, and the cooling of cooling liquid itself is also accelerated by using vaporization endothermic process, thereby reducing the heat dissipation load of engine heat dissipation module, reducing the energy consumption of whole vehicle, improving economy.

The application provides a regenerative heat cycle and an intermediate regenerative mechanical compression heat pump, and belongs to the technical field of thermodynamics and heat pump. The regenerative heat cycle is a closed process composed of eight processes of a certain mass of circulating working medium in sequence, namely, a low-temperature heat source heat absorption process 12, a pressure increasing process 23, a circulating working medium heat absorption process 34, a pressure increasing process 45, a high-temperature heat source heat release process 56, a pressure decreasing process 67, a circulating working medium heat release process 78 and a pressure decreasing process 81. The heat release of the process 78 satisfies the heat absorption of the process 34. Based on the regenerative heat cycle, the corresponding intermediate regenerative mechanical compression heat pump is constructed.

The present application belongs to the technical field of geothermal source utilization, and particularly relates to a high-efficiency geothermal source high-temperature environment-friendly heat pump system with double-system collaborative optimization. The system comprises a transcritical CO2 system and a refrigerant system coupled through a heat exchanger, and the refrigerant system uses R1233zd(E) refrigerant. Geothermal source water is connected to an evaporator in the refrigerant system and an evaporator in the CO2 system in sequence to complete a secondary heat release process. Heat recovery working medium is connected to an air cooler in the CO2 system and a condenser in the refrigerant system in sequence to complete a secondary heat absorption process. The present application makes full use of the characteristics of CO2 in the transcritical state and the advantages of R1233zd(E) to reduce the floor area of the system. Through reasonable setting of operating parameters and adjustment of load matching, geothermal source heat can be efficiently extracted, and while providing a 120 DEG C high-temperature heat source, a 20 DEG C geothermal return water basis can be completed, and the system COP is kept at greater than or equal to 2.5.

This application relates to the field of hydrogen storage technology, and in particular to a solid-state hydrogen storage device and a solid-state hydrogen storage testing system. The solid-state hydrogen storage device includes a supporting component, a hydrogen storage tank, a fan, and a heating component. The supporting component forms an installation cavity, in which the hydrogen storage tank is installed. The heating component is disposed on the side wall of the installation cavity and is used to heat the hydrogen storage tank. The supporting component has an air inlet and an air outlet communicating with the installation cavity. The fan is disposed on the supporting component and is connected to both the air inlet and the outside of the supporting component, and is used to blow air to cool the hydrogen storage tank. Therefore, during the hydrogen charging and heat release process, the fan can be activated to dissipate heat, thus preventing a sudden increase in local temperature and improving the stability of the hydrogen storage material. During the hydrogen release and heat absorption process, the heating component can be activated to continuously heat the hydrogen, thereby solving the problem of insufficient heat supply, ensuring the continuous progress of the reaction, and improving the reliability of the test.

The utility model discloses a triple heat dissipation device, and relates to the technical field of vapor chambers. Comprising an upper copper plate and a lower copper plate which are used for rapid heat dissipation, and the thickness of the upper copper plate and the thickness of the lower copper plate are 0.1 mm-0. 3 mm due to the fact that the upper copper plate and the lower copper plate are integrally formed A sealed cavity is formed between the upper copper plate and the lower copper plate and used for low-boiling heat dissipation of water working media, and the height of the sealed cavity ranges from 0.2 mm to 0.6 mm. In the using process, when heat generated by a heat source is rapidly transmitted through the upper copper plate, the temperature of a water working medium in the sealed cavity rises, when the temperature reaches the boiling point, the working medium is rapidly subjected to phase change and absorbs a large amount of latent heat of vaporization, and due to the fact that the density of a gaseous working medium is lower than that of a liquid working medium, the gaseous working medium is diffused upwards under the action of buoyancy and fills the whole sealed cavity; the liquid working medium which flows back to the surface of the upper copper plate absorbs heat again, the boiling heat absorption process is repeated, continuous condensation circulation is formed, the device can adapt to the inclination angle in any direction, and the device is far superior to the traditional gravity dependence limitation that VC is only smaller than or equal to 15 degrees.

The application discloses a carbon dioxide capturing system and relates to the technical field of carbon dioxide capturing. The application combines a heat exchange device with a heat pump, utilizes the characteristics of water vaporization and latent heat absorption, fully utilizes the reaction heat of CO2 absorption, realizes the heat grade promotion of water vapor generated by the heat exchange device through the heat pump, further releases a large amount of latent heat, and then generates high-temperature steam by using the latent heat, so that energy is provided for the carbon dioxide desorption process, the steam latent heat is reused, the reaction heat of the carbon dioxide absorption stage can be used for the heat absorption process of the desorption stage, the problem of heat consumption caused by the large and repeated temperature rising and falling process between the absorption and desorption devices in the traditional carbon dioxide capturing process is solved, the energy consumption of the absorbent regeneration process and the carbon dioxide capturing process is obviously reduced, the CO2 absorption efficiency is improved, and large-scale industrial popularization and application can be facilitated.