102 results about "Radiant heat exchange" patented technology

A heat exchanger 10 includes a conduit 12 for conveying cooling fluid relative to a body to be cooled. A heat transfer arrangement 62 is arranged in communication with an interior of the conduit 12, the heat transfer arrangement 62 and the conduit 12 together defining an assembly that is mountable adjacent the body to be cooled, convective heat exchange occurring, in use, due to movement of the cooling fluid relative to the body and the heat transfer arrangement 62 of the assembly and radiant heat exchange occurring between the body and at least part of the heat transfer arrangement 62 of the assembly.

The invention relates to a method for reducing emission of CO2 by circulating fluidized bed temperature flue gas circulation oxygen combustion, which is a method for realizing CO2 emission reduction applied in a circulating fluidized bed boiler based on the technology of temperature flue gas circulating oxygen combustion. The method comprises the following steps: feeding fuel and desulfurater into the circulating fluidized bed boiler, taking the gas mixture of O2 and circulating flue gas as combustion agent, passing through the heating surface at the tail by the flue gas generated by combustion, heating O2 (concentration is 96.5%-98.5%) from an air separation unit, generating temperature flue gas at the temperature of 140-150 DEG C, taking the gas mixture composed of 30%-70% of the temperature flue gas and O2 as oxidant to delivery to a furnace for combustion, carrying out dedusting by a deduster, multi-level condensation and dehydration and compression on the residual flue gas (volume concentration of CO2 is larger than 95%), and realizing resource utilization or storing in a sealing manner. The circulating glue gas is rich in vapor, entrainment unburned carbon and active desulfurater; the method enhances radiant heat exchange in the furnace, solves the problem of insufficient amount of convection heat transfer, improves combustion efficiency and desulfuration efficiency of the furnace, and can realize near-zero emission of gas pollutant; besides, the method can also lower comprehensive power consumption of space division and CO2 compression, and improve generating efficiency.

Provided are an exhaust gas processing system and method capable of effectively utilizing the sensible heat of an exhaust gas for preheating air for burner combustion in a rotary hearth type reducing furnace while preventing troubles caused by adhesion of dust such as blockage in an exhaust gas processing facility for a rotary hearth type reducing furnace and corrosive deterioration in the facility without increasing the facility costs excessively. The system comprises a radiant heat exchanger 2 for heat exchange between an exhaust gas exhausted from the rotary hearth type reducing furnace and air. The radiant heat exchanger 2 includes an inner cylinder 22 made of metal surrounding a space through which the exhaust gas flows; an outer cylinder 21 disposed on an outer side in a radial direction of the inner cylinder to define a flow channel between the inner cylinder and the outer cylinder 21 for allowing the air to flow so as to exchange heat with the exhaust gas; and a highly thermal conductive refractory 23 applied to an inner side of the inner cylinder 22 so as to cover an inner surface thereof.

A multi-stage harvest dryer (10) is provided for drying an agricultural harvest product (12), such as, for example, corn, sunflowers, beans, seeds, etc. The dryer (10) includes multiple drying stages (14a-14d) connected in sequence to dry a volume of harvest product (12) passed from one drying stage (14) to the next. Heat exchangers (16a, 16b, 18a, 18b, 18c) are located in the stages (14a-14c) to transfer heat to the harvest product (12) in each of the corresponding stages (14a-14d). The heat exchangers (16a and 16b) are radiant heat exchangers that efficiently heat the harvest product (12) via radiant heat transfer, with heaters (19a, 19b) being provided to maintain the heat exchangers (16a, 16b) within a desired temperature range. The heat exchangers (18a-18c) are condensers that efficiently recycle the heat within the dryer (10) by transferring heat back to the harvest product (12) by condensing water that has been evaporated from the harvest product (12) elsewhere in the dryer (10).

The invention provides a satellite temperature control method allowing rapid responding and multi-orbit adaption, wherein by adopting a heat pipe network, reinforcing contact thermal conduction, and spraying a high-emissivity thermal control coating inside a satellite to reinforce in-cabin thermal conduction and radiation heat exchange, a temperature field is distributed uniformly in a cabin; a whole satellite temperature level is adjusted by a compensative electric heater; a nightside of a side plate of the satellite is taken as a major heat dissipation face, the outer surface of the nightside is sprayed with a white paint, and all the other outer surfaces of the satellite body, except for the major heat dissipation face, are covered by multiple layers of thermal insulation assemblies; and components outside the satellite are sprayed with a white paint thermal control coating. A propelling cabin has independent design, wherein the entire outside of the cabin is covered by the multiple layers of the thermal insulation assemblies, a baseplate inside the cabin is covered by the multiple layers of the thermal insulation assemblies, and the propelling cabin is finally integrated with a platform cabin. By integral design of machinery, heat and electricity, the satellite temperature control method allowing the rapid responding and the multi-orbit adaption provided by the invention realizes thermal control requirements of the whole satellite under conditions of a sun-synchronous orbit and an inclined track by the temperature control method.

Disclosed is a fused salt energy storage heating heat-exchange system. An integrated device with a large-capacity and good thermal insulation fused salt tank, an electric heating tube for heating in a fused salt liquid and a radiation heat exchange tube which is mounted in the fused salt liquid and used for heat exchange is applied, thereby, the complicated process of fused salt energy storage and heat exchange application is simplified, and a technology of fused salt energy storage is easy to implement and extremely low in costs; direct heating is performed in the fused salt liquid so that the heating efficiency is high, radiant heat exchange is performed in the fused salt liquid so that the heat exchange efficiency is high, energy is controllable, safety and reliability are achieved, and off-peak electric energy is stored as required; the energy is used for heat supply of residential quarters in winter, the ultra-large fused salt tank is used, and heat energy is stored by the off-peak electric energy at night; high-pressure steam is generated through the heat exchange tube to push a steam turbine to generate electricity during on-peak power utilization, and insufficient power can be supplemented; compared with other energy storing methods, the method of electricity generation by the fused salt energy storage has the advantages that the investment is small, the method can rapidly take effect, the price of energy storing media is low, the source is wide, materials are easy to obtain, and the heat conversion efficiency is high.

The invention discloses a liquid high-temperature slag granulation and waste heat recovery device. The device comprises a slag falling pipe, a granulation bin and a granulation device body. The granulation bin is in an inverted box shape, and the lower portion of the granulation bin is open. An opening is formed in the top of the granulation bin and used for allowing the slag falling pipe to stretch in. The inner wall of the granulation bin is a heat exchange surface used for absorbing heat dissipated by liquid high-temperature slag during granulation. The granulation device body is arranged under the slag falling pipe. The high-temperature slag flows into the granulation bin through the slag falling pipe, falls onto the granulation device body, is granulated by the granulation device body rotating at a high speed and meanwhile conducts radiant heat exchange on the heat exchange surface laid on the granulation bin under the action of ring air surrounding the granulation device body, so that granulation and partial energy recovery of the liquid high-temperature slag are realized.

In order to improve comfort, this air conditioner is provided with a refrigerant circuit having a compressor, an indoor heat exchanger, a radiant heat exchanger, a pressure reduction mechanism, and an outdoor heat exchanger. The indoor heat exchanger is disposed inside an indoor unit in such a manner as to face an indoor fan, and the radiant heat exchanger is disposed on the outer surface of the indoor unit. In addition, the air conditioner has an indoor electrically-operated valve for adjusting the amount of refrigerant supplied to the radiant heat exchanger. The air conditioner is controlled in such a manner that, when a refrigerant is flushed through the indoor heat exchanger to carry out warm-air heating, and the refrigerant is flushed through the radiant heat exchanger to carry out radiant heating, the opening of the indoor electrically-operated valve becomes larger after the frequency of the compressor drops.

The invention provides a radiant air conditioner indoor unit, an air conditioning system and a control method. The radiant air conditioner indoor unit comprises a radiant panel and a microchannel heatexchanger. The radiant panel is attached to the side face, facing indoors, of the microchannel heat exchanger. According to the radiant air conditioner indoor unit, the air conditioning system and the control method provided by the invention, by arranging the microchannel heat exchanger and the radiant panel, radiant heat exchange and natural convection heat exchange can be achieved, the user comfort is improved, in addition, by arranging the radiant panel, the radiation efficiency and comfort can be improved, the appearance of the microchannel heat exchanger is beautified, the mounting and later maintaining difficulty is lowered, due to the fact that a coolant is directly introduced into a room, the temperature range for heat exchange is enlarged, by arranging a thermal infrared imager and an image collecting device, the frequency of a compressor and/or the opening degree of an adjusting valve can be intelligently adjusted according to the detected indoor temperature, body temperature of a user and physical state of the user, the purpose of intelligent control is achieved, and by arranging a second heat exchanger, the radiant heat exchange efficiency is improved.

The invention discloses a radiant heat exchange plate and a central air conditioning system. The radiant heat exchange plate comprises a radiation panel (1), a heat exchange part and a heat preserving layer, wherein the radiation panel is a gypsum panel or a stone panel; the heat exchange part is arranged on the radiation panel (1), and comprises integral heat transfer fins (2) attached onto the radiation panel (1) and heat exchange tubes (3) which are arranged on the heat transfer fins (2) and are in close contact with the heat transfer fins (2); the heat preserving layer covers the heat exchange part. The radiant heat exchange plate according to the invention has the advantages that the surface temperature field is uniform, condensation does not easily occur and the radiant heat transfer amount is great.

A vehicle-mounted heat utilization device (10) includes: an engine fluid circuit (12) in which fluid circulates to cool an engine (18); a heater fluid circuit (14) that passes through an exhaust heat recovery apparatus (26) that recovers a heat of exhaust gas (28) and a vehicle-interior heat exchanger (24) for radiating a heat of the fluid into a vehicle interior; a cooling-heating fluid circuit (16) that passes through a radiating heat exchanger (34), the radiating heat exchanger being included in a refrigeration cycle (30) in which refrigerant is compressed by a compressor (32) and the compressed refrigerant is expanded; a first switching unit (52) that is configured to selectively switch a state of the engine fluid circuit (12) and the heater fluid circuit (14) between a connected and a disconnected state; a second switching unit (54) that is configured to selectively switch a state of the heater fluid circuit (14) and the cooling-heating fluid circuit (16) between a connected state and a disconnected state.

The invention belongs to the technical field of combustion and boilers, relates to a boiler system adopting burning low-heating-value fuel gas and an operation method for the boiler system, and the low-heating-value fuel gas with a heating value of 600Kcal/m<3>-1000Kcal/m<3> is adopted as a fuel. The boiler system is characterized in that a heat-insulation combustion chamber is arranged, wherein a boiler heating surface is arranged at the periphery of the heat-insulation combustion chamber; heat dissipation of the heat-insulation combustion chamber is reduced by adopting refractory castable, so that conditions such as space, temperature and retention time are provided for stable and complete combustion of the low-heating-value fuel; a ring-shaped seam between a combustion chamber housing and the refractory castable is a combustion-supporting air channel; a little heat dispersed by the refractory castable is absorbed by combustion-supporting air, so that temperature of the combustion-supporting air is increased, and heat dissipation loss is reduced; area of a heat exchange surface is set according to a combustion product of the low-heating-value fuel gas, a radiant heat exchange surface is reduced by 40%-40% in comparison with that of a common boiler, and convection heat exchange surface is increased by 10%-30% in comparison with that of the common boiler. The boiler system effectively solves the emission-reduction and utilization problem of the low-heating-value process tail gas, and has the advantages of high heat recycling efficiency, low operation cost and the like.

The invention provides a working position separated type radiant heat exchange air conditioner terminal device. According to the radiant heat exchange air conditioner terminal, separation radiant plates are used as components for indoor working position separation and simultaneously used as radiant heat transferair conditioning terminals for carrying out refrigerating/heating on different working positions in working position separation, radiant heat exchange and air supply airflow heat exchange are conducted on working position local area space directly through the separation radiant plates, the wet and heat power can be more centrally and more efficiently used for wet and heat load treatment for the working position local area space, the energy consumption utilization rate of an air conditioner system is improved in an assisted mode, the overall energy consumption caused by the office building air conditioner system is lowered, the requirements of different workers for the comfort and difference of working position local area environment can be better met, and unnecessary energy consumption waste is reduced; meanwhile, the invention further provides a heat exchange treating method of the working position separated type radiant heat exchange air conditioner terminal device. Balance and comfort of refrigerating and heating for the working position local area space can be better guaranteed.

The invention provides an integral condensing boiler. In the integral condensing boiler, a fully-premixed flameless burner fueled by oil gas fuels is used for radiant heat exchange in a boiler furnace, a platefin type heat transfer component is used for entire convection and condensation heat transfer and a flue gas mainstream temperature zone is directly inserted by welding a pin or a cast boss, thus effectively reducing the temperature gradient from the glue gas mainstream to a wall surface, continuously damaging a flowing boundary layer of the wall surface and a flue gas center and strengthening the heat convection; furthermore, condensation heat transfer can expand from the wall surface to the whole surface of the pin or the cast boss so that the condensation heat transfer area can be effectively enlarged; meanwhile, condensation heat transfer of water vapor in the flue gas can be strengthened, thus the whole convection and condensation heat transfer coefficients of the condensing boiler can be greatly improved; the condensation liquid can absorb partial harmful gases in the flue gas, such as CO2, NOx, SOx, and the like, thus pollutant emission can be effectively reduced. The boiler has a simple structure and high entire convection and condensation heat transfer coefficients and can be used for improving the conversion efficiency of thermal energy to the greatest extent.

A novel full tube panel type efficient oil and gas fired boiler comprises a radiant heat exchange membrane type water-cooled wall tube panel structure and a convection heat exchange tube bundle type tube panel structure, wherein the radiant heat exchange membrane type water-cooled wall tube panel structure comprises a front wall membrane type water-cooled wall, a rear wall membrane type water-cooled wall, a left side wall membrane type water-cooled wall and a right side wall membrane type water-cooled wall, and an O-shaped section structure is formed by the left side wall membrane type water-cooled wall, the right side wall membrane type water-cooled wall, a side wall lower header and a side wall upper header; the convection heat exchange tube bundle type tube panel structure comprises convection heat exchange tube bundles, a convection tube panel outside wall membrane type wall and a tail smoke chamber, the radiant heat exchange side wall membrane type water-cooled walls serve as inside wall membrane type walls of the convection heat exchange tube bundle type tube panel structure, and a convection flue with two sides being sealed is formed by the radiant heat exchange side wall membrane type water-cooled walls, the outside wall membrane type wall, an upper welding steel board and a lower welding steel board. The novel full tube panel type efficient oil and gas fired boiler is high in safety margin and good in heat transfer performance, makes use of modular design, and is capable of being rapidly installed and integrally assembled, short in installation period, easy and convenient to operate and maintain, and convenient to repair; the overall sealing performance of the whole boiler is good, heat loss due to radiation is reduced obviously, and heat efficiency is improved effectively.

The invention provides a hot rolling heating method capable of improving the head and tail performance of non-oriented silicon steel. In the method, a billet to be heated for hot rolling is of a fixed size, a stepwise heating furnace is used for heating, and the opening rate of a burner on the inner side of the heating furnace and burners which are less than one meter away from the head and tail parts of the billet are controlled to be 50 to 90 percent. In the invention, the thickness of the billet is 150 to 300 millimeters, the charging temperature of the billet is above 400 DEG C, the heating time is 120 to 280 DEG C, the heating temperature is 1,200 to 1,400 DEG C, and the discharging temperature is 1,100 to 1,240 DEG C. In the invention, the opening rate of the burners in the heating furnace is controlled to reduce the temperatures of the heating furnace close to the head and tail parts of the billet, and thus, the radiant heat exchange between the furnace body and the head and tail parts of the billet is reduced. When the technical scheme of the invention is adopted, the fluctuation in the electromagnetic performance of the cold-rolled non-oriented silicon steel product can be reduced effectively by using the conventional equipment without influencing output and the performance of other products produced in the same furnace; and therefore, the head and tail performance of the cold-rolled non-oriented silicon steel product is improved.

The invention relates to a casting waste heat recycling device based on radiant heat exchange. The casting waste heat recycling device comprises a steel caterpillar band, an aluminum waste heat recycling device, a water storage box, a circulating water pump, a circulating water pipe, a temperature sensor, a temperature controller, solenoid valves, an absorption refrigeration device and a heating pipe net device; the aluminum waste heat recycling device with the model cross section is arranged on the steel caterpillar band; a water outlet of the water storage box is connected with a water inlet of the waste heat recycling device through the circulating water pipe, and the circulating water pump is arranged on the circulating water pipe; a water outlet of the waste heat recycling device is provided with the temperature sensor and the temperature controller, and the temperature controller is used for controlling opening and closing of the two solenoid valves; and hot water pipes behind the solenoid valves are connected with the water storage box, the absorption refrigeration device and the heating pipe net device. According to the casting waste heat recycling device, while high temperature casting waste heat is recycled, the internal structure character of a casting is not influenced. The overall device is fewer in motion part, safe, reliable, long in service life, easy to maintain and environment-friendly, and continuous recovering of the high temperature casting waste heat under intermittent production of small and medium size casting enterprises can be achieved.

The invention relates to an integrated rotary radiation preheating mixing type heat recovery device with a smoke chilling function. The integrated rotary radiation preheating mixing type heat recovery device with the smoke chilling function is characterized in that high-temperature synthetic gas and melting slag enter a radiant heat exchange component from a synthetic gas inlet of the device to be subjected to radiant heat exchange and then enter a gas mixing chamber of a smoke chilling component to be subjected to air changing cooling, afterwards, solid ashes enter a slag bath, and the synthetic gas upwards returns and is subjected to spray cooling through an attemperator component; and the synthetic gas enters a convective heat exchange component, sequentially flows through an evaporator, a superheater and an economizer, and is subjected to heat exchange cooling and discharged through a synthetic gas outlet. The integrated rotary radiation preheating mixing type heat recovery device has the advantages of effectively combining radiant heat exchange, smoke chilling and convective heat exchange, being useful for an IGCC (Integrated Gasification Combined Cycle) power generation system, absorbing sensible heat of the raw synthetic gas to generate high-pressure steam or middle-pressure steam for power generation, greatly improving the utilization ratio of overall energy resources, being high in recovery utilization ratio of energy and more convenient in manufacturing, transportation and installation, effectively reducing the whole size of a waste heat boiler and being capable of eliminating dust deposited on a convective heat exchange surface.

The invention relates to a combined type ceiling radiant plate, belongs to terminal devices of independent temperature and humidity control central air conditioners and can be used in an air conditioning system for refrigeration and heating. A radiant ceiling is composed of a radiant coiler, a heat conduction plate good in heat conduction performance, a decoration ceiling panel and the like. The inflection type radiant coiler is clamped in a pipe groove of the heat conduction plate to increase the downward radiant quantity of the radiant ceiling. The heat conduction plate can be machined into different specifications according to the onsite building structure condition. The decoration panel with or without micro holes clings to the lower surface of the heat conduction plate to serve as a ceiling face, convection heat exchange of the radiant plate and indoor air is improved while radiant heat exchange is conducted, and the refrigeration/heating capability is improved.

The invention belongs to a method for determining a specimen dry friction surface temperature field. According to the technical scheme, 1-5 temperature measurement holes are chosen on the surface of a specimen to fix thermocouples, and the thermocouples are connected to a temperature measurement instrument to conduct actual measurement on dry friction temperatures; using a finite element to simulate temperature values at the thermocouples on different warm boundary conditions, and establishing an error quadratic sum model between the temperature simulation values and actual temperature measurement values at all the thermocouples; with the purpose that quadratic sum between the temperature simulation values and the actual temperature measurement values is the smallest, using an optimal constraint function to optimize and determine a radiation heat transfer efficient of a specimen dry friction surface to environment, a contact heat transfer coefficient of a grinding wheel, a contact heat transfer coefficient of a grinding disc, a specimen dry friction surface, and a heat source density of a specimen dry friction surface, and in this way, determining a material dry friction surface and a dry friction temperature field near the material dry friction surface. The method for determining the specimen dry friction surface temperature field is simple, reliable in result and low in cost; the determined temperature is close to reality, the critical temperature can be predicted when a material generates abrasion, and basic data is provided for design of the material and optimization.

A thermal storage system, capable of storing and releasing thermal energy, with a radiative heat exchange outer surface and a method of operating the device to cool a room-space without using a circulating refrigerant in the room cooling step