33results about How to "Extend heat release time" patented technology

The invention provides a solar phase change heat storage wall and a ventilation system provided with the same. The solar phase change heat storage wall is formed by connecting a high-temperature phase change layer, a medium-temperature phase change layer and a low-temperature phase change layer sequentially, wherein the phase change temperatures of the high-temperature phase change layer, the medium-temperature phase change layer and the low-temperature phase change layer are set from high to low. A glass cover plate is arranged on the south side of the outer wall of the ventilation system; the rest part of the ventilation system is composed of an enclosure structure; an outdoor air inlet is formed in the upper part of the north side of the outer wall; and an outdoor air outlet is formed in the upper part of the south side. The solar phase change heat storage wall is positioned in the outer wall and close to the glass cover plate; the high-temperature phase change layer faces south; and an upper vent hole and a lower vent hole are formed in the upper part and lower part of the solar phase change heat storage wall respectively. A hot water system penetrates through the solar phase change heat storage wall to perform heat exchange. The solar phase change heat storage wall can overcome shortcomings of a conventional heat collection wall, has the advantages of good heat storage capability, diversified functions, simplicity for operation and no energy consumption, can achieve the effects of cooling by ventilation and domestic water heating in summer, and can be used for providing heat in winter, thereby having good application prospects.

The invention discloses a stable-heating-temperature self-heating material composition. The composition is characterized by comprising the following components in parts by weight: 1-10 parts of reduced iron powder, 1-4 parts of activated carbon, 1-2 parts of coke, 0.5-2 parts of sodium chloride, 0.5-2 parts of sodium carbonate, 1-3 parts of diatomite, 1-4 parts of aluminum powder, 1-3 parts of calcium oxide, 2-8 parts of aluminum oxide and 10-40 parts of water. The stable-heating-temperature self-heating material composition has the advantages of long heat-generating duration time and stable reaction, and can satisfy the requirements of stable curing temperature and curing time for the repair composite material.

The invention relates to the technical field of transformers, and in particular to a transformer based on non-Newtonian fluid cooling. The transformer comprises a shell, a transformer assembly, transformer oil, an aluminum shell, a heat conduction plate set, a circulating pipeline, a fixing frame, cooling fins, a liquid inlet pipe, a liquid return pipe, a sealing assembly, a buffer spring, a fixing frame, a top plate, a wiring end, a lightning rod and a base frame. The transformer assembly is fixedly installed inside the outer shell, a gap between the outer shell and the transformer assembly is filled with the transformer oil, the aluminum shell is arranged outside the outer shell in a sleeving mode, the heat conduction plate set is fixedly installed on the outer surface of the outer shell, and the circulating pipeline is fixedly installed on the heat conduction plate set. According to the transformer, the purpose of quickly cooling the transformer is achieved, the heat dissipation effect on running heat of the transformer can be improved, it is guaranteed that the transformer is always within the temperature range suitable for running, the phenomenon that the transformer is burntdown due to heat accumulation is avoided, and the service life of the transformer is prolonged.

The invention relates to a solar heat collecting device and a heating and drying system. The solar heat collecting device comprises a plurality of heat collecting monomers arranged side by side, wherein the plurality of heat collecting monomers are sequentially connected in series. Each heat collecting monomer comprises a solar vacuum tube, a top plug, a built-in U-shaped pipeline, a water inlet connecting pipe and a water outlet connecting pipe, wherein the built-in U-shaped pipeline, the water inlet connecting pipe and the water outlet connecting pipe are integrally formed, one end of the solar vacuum tube is opened, the built-in U-shaped pipeline is inserted into the solar vacuum tube, the top plug seals the opening of the solar vacuum tube and is provided with two through holes, and two parallel straight pipes of the built-in U-shaped pipeline penetrate through the corresponding through holes to communicate with the water inlet connecting pipe and the water outlet connecting pipe.The invention further discloses the heating and drying system. The solar heat collecting device has the beneficial effects that the heat collection function is excellent, the technology is simple, thecost is extremely low, the collected heat exchanges heat with indoor air through an indoor radiator, high-temperature heating or drying can be realized, and the device is suitable for wide-range popularization and application. All-weather heating is realized while the effective utilization rate of solar energy is improved.

The invention belongs to the technical field of phase change material preparation, and discloses a method for preparing a low-temperature phase-change material from tetradecane and expanded graphite.The method comprises the following steps: (1) placing expandable graphite in an oven, drying the expandable graphite at 100 DEG C for 2 hours, taking out the expandable graphite, laying the expandablegraphite in a crucible, calcining the crucible, taking out the crucible, and cooling the crucible to obtain expanded graphite, which is completely expanded; (2) weighing expanded graphite, adding theexpanded graphite into a beaker, pouring tetradecane into the beaker, placing the beaker in a water bath kettle, and stirring; (3) carrying out suction filtration on the stirred uniform mixture; and(4) putting the solid obtained by suction filtration into a drying oven for drying, taking out and weighing every half an hour, and observing the surface drying state of the solid until the material mass loss rate is reduced and the sample is loose and granular to obtain the low-temperature phase-change material. The method is mainly used for preparing the low-temperature phase-change material which is widely used in an anti-freezing cement concrete pavement, and solves the problems of complex process and high cost of a conventional low-temperature phase-change material preparation method.

The invention belongs to the technical field of activated carbon materials, and particularly relates to an activated carbon base material and a preparation method thereof. The activated carbon base material comprises a honeycomb plate base material, a functional material is poured on the honeycomb plate base material, and the functional material is poured into honeycomb holes of the flame-retardant honeycomb plate base material and wraps the whole flame-retardant honeycomb plate base material; the functional material comprises the following components: activated carbon-flame retardant particles, basalt fibers, straw fibers, diatomite, a graphite adsorption phase change energy storage material and thermosetting resin. The activated carbon base material has the advantages of high energy storage density, high phase change heat utilization rate, light weight, high strength, good wear resistance, flexibility in processing, convenience in use and the like, and also has the effect of adsorbing indoor harmful gases. The activated carbon base material has better physical and chemical properties, mechanical properties and high-temperature stability, can be used as a furniture structural plate, and can be used for indoor walls, furniture, partition plates, ceilings and the like.

The invention discloses a system for directly heating through solar photovoltaic power generation. The system comprises a solar device, wherein the solar device is selectively connected with a direct current-direct current converter and a direct current-alternating current inverter through a selective switch; the direct current-alternating current inverter is connected with an alternating current distributor, and the alternating current distributor is connected with the State Grid Corporation of China and an electric appliance in a building specified by a user; and the direct current-direct current converter is connected with a direct current distributor, and the direct current distributor is connected with an electric heating structure. In the daytime in winter, electricity generated by the solar device is used for heating an electric heating film, one part of heat is upwards transmitted into the building, and the other part of heat is accumulated in a heat storage layer to continuously release heat indoors at night. In summer, electricity can be continuously generated, the generated electricity can be supplied to the electric appliance in the building specified by the user, and redundant electric energy can be uploaded to the State Grid Corporation of China. If the load of the electrical appliance in the building exceeds the electric energy generated by a solar cell panel, the electric energy can be obtained by the State Grid Corporation of China, and thus the solar energy is utilized to the greatest extent.

The invention discloses an electric Electric car energy storage brick heater with a high heat utilization rate. The electric electric car energy storage brick heater with the high heat utilization rate comprises a cabinet; an energy storage brick body is fixedly connected between the top and the bottom of the internal wall of the cabinet through a connecting block; a ventilation groove is formed in the energy storage brick body; an oil inlet groove and an oil outlet groove are formed in the energy storage brick body and correspondingly positioned on the two sides of the ventilation groove; oneside of the oil inlet groove is in communication with one side of the oil outlet groove through a liquid delivery pipe; mounting grooves are formed in the energy storage brick body and are formed between the ventilation groove and the oil inlet groove and between the ventilation groove and the oil outlet groove; and spiral heating rods are fixedly connected to the interiors of the mounting grooves. The invention relates to the technical field of automobile heating equipment. According to the electric electric car energy storage brick heater with the high heat utilization rate, the heat utilization rate can be greatly increased, the heat of each material area of the energy storage brick is sufficiently utilized, and a purpose of prolonging the heat releasing time is achieved so that greatconvenience is provided for people to use the heater for heating.

The invention belongs to the technical field of health care, and relates to a method for using hot compress wax paste blocks. The method comprises the following steps: step 1, performing heating to melt hot compress wax paste blocks into a liquid state; step 2, pouring the hot compress wax paste melted into a liquid state into a customized rubber mold, and cooling the wax paste to a paste state; and step 3, inverting the rubber mold filled with the hot compress wax paste on the skin of a human body to perform hot compress on a to-be-care part of a human body, and then removing the not compresswax paste. According to the invention, the cooling and solidifying time of wax paste in an original operation method is shortened, and the continuous heat release time of the wax paste is effectivelyprolonged. Through covering of the rubber thin mold, heat loss of the wax paste is reduced, and an effect of preventing clothes from being polluted is achieved at the same time. After the wax paste is removed, the wax paste and the rubber mold are separated, the wax paste is put into a glass bowl, and the rubber mold is washed by tap water for use of next time.