483results about How to "Reduce water temperature" patented technology

A storm water interceptor comprises an input conduit connected to a first treatment tank for delivering storm water to the first treatment tank and having an obvert elevation. Also, the interceptor comprises a lower conduit having an invert elevation, a substantially horizontal orifice at a first end connected to the first treatment tank and an exit orifice at an opposite end connected to a second treatment tank, whereby the substantially horizontal orifice at the first end of the lower conduit is below the invert elevation of the lower conduit. The interceptor further comprises an overflow conduit connecting the first treatment tank to the second treatment tank, whereby the overflow conduit is connected to the first treatment tank at a location above the obvert elevation of the input conduit. As well, there is an output conduit having a substantially horizontal orifice at a first end connected to the second treatment tank and an exit portion extending away from the second treatment tank, whereby an invert elevation of the output conduit is above an obvert elevation of the lower conduit, and whereby the substantially horizontal orifice at the first end of the output conduit is below the invert elevation of the output conduit. More than two treatment tanks may be connected in a cascading manner using the same general components and principles as an interceptor having two treatment tanks.

In one embodiment of the invention, a system for controlling the temperature of water in a water reservoir includes a water reservoir, an inlet operable to deliver water to the water reservoir, an outlet operable to dispense at least a portion of the water from the water reservoir, and a staged water cooler having a first thermoelectric cooler stage coupled to a second thermoelectric cooler stage, the staged water cooler operable to control the temperature of the water in the water reservoir.

The invention relates to a minitype multifunctional heading machine, comprising a rack, the lower part of which is provided with a traveling mechanism; the lower part of the front end of the rack is provided with a shovel board mechanism, the middle-lower part of the rack is provided with a conveying mechanism from front to back in an extending manner; the rack is also provided with a power mechanism and a cooling system; the front end of the rack is provided with a steering mechanism which is provided with an execution control mechanism used for installing a cutting head or a breaking hammer or a bucket; the cooling system comprises a main water tank, an auxiliary radiator, a plate-fin water radiator, a water pump, a three-way ball valve and an adaptive pipeline of the three-way ball valve and the like; and the plate-fin oil heat exchanger of cooling hydraulic oil is arranged in the main water tank. The machine is convenient for realizing the replacement of the cutting head or the breaking hammer or the bucket, adapts to multifunctional operation, can realize cutting and assist in finishing charging operation at the same time, reduces special procedure of repairing the top part and lateral side of the tunnel; when external water source supply dose not exist, the cooling water in the water tank can carry out cycle operation to reduce the temperature of hydraulic oil, thus ensuring that the machine can work normally.

During off-peak operation of a power plant operating on a thermodynamic cycle wherein heat is rejected to an ambient fluid, heat is removed from a cold temperature storage medium. The cold temperature storage medium is stored until the power plant is experiencing a peak period. During the peak period, the stored cold temperature storage medium is used to absorb heat from the ambient fluid prior to heat rejection from the thermodynamic cycle to the ambient fluid, to improve performance of the thermodynamic cycle. In another aspect, the stored cold temperature storage medium is mixed with the ambient fluid prior to heat rejection from the thermodynamic cycle to the ambient fluid. Corresponding systems, apparatuses, retrofit methods, design and control techniques are also disclosed.

The invention discloses a hydrodynamic fan cooling tower capable of generating sub wet bulb temperature water. The hydrodynamic fan cooling tower comprises a cooling tower shell; vertical pipe type indirect evaporative coolers with the same structure are symmetrically arranged on the left side and the right side of the cooling tower shell; a direct evaporative cooler is arranged between the two vertical pipe type indirect evaporative coolers; an exhaust fan is arranged at the upper part of the direct evaporative cooler; and an exhaust port is formed on the top wall of the cooling tower shell corresponding to the exhaust fan. The hydrodynamic fan cooling tower capable of generating the sub wet bulb temperature water has the benefits that a water turbine is used for replacing a motor to be taken as a power source of the exhaust fan, so that the energy consumption is reduced; and the vertical pipe type indirect evaporative coolers and the direct evaporative cooler are combined, and the leading effects of the evaporative coolers are fully exerted, therefore, the cooling tower has the advantages of environmental friendliness, high efficiency and energy conservation.

Disclosed and claimed is a method for improving the froth quality and bitumen recovery in primary bitumen extraction processes by coagulant addition in the underwash feed water. Preferred coagulants are cationic or amphoteric polymers. Coagulant addition in the underwash feed water reduces the solids content reporting to the primary bitumen froth in a primary separation vessel (PSC). This treatment program can also be combined with dispersant addition in the dilution make-up feed water into a PSC. Preferred dispersants are low molecular weight anionic polymers.

This invention relates to a thermoregulation dehumidifier for air regulating, that is also called a machine double system new type dehumidifier, which has the case, the case has evaporator, air-cooled condenser, compressor, water-cooled condenser, drying filter, expansion valve, hot gas by-passing valve, dash board, the character of which is that the cooling coil is arranged at the front of the evaporator, the cooling coil is in series with the water-cooled condenser, precooking air and decreasing the air dealing range of the refrigeration system; the cold water come into the water-cooled condenser after sucking heat from the cooling coil, the temperature of the cold water is lower, the condense temperature is also low, comparing to the common dehumidifier, the dehumidifying capacity of unit electric energy is higher than the common dehumidifier and can afford with new air dealt differently in room all the year round.

The invention relates to a method and device for realizing the lasting and stable accumulation of nitrite nitrogen under a low-temperature condition. The lasting and stable accumulation of the nitrite nitrogen is completed in two stages of biological aerated filter systems. The method comprises the following steps: step a. starting a first-stage biological aerated filter and a secondary-stage biological aerated filter, cleaning a filter material, soaking, forming a biofilm, commissioning and operating; b. preparing testing wastewater, and maintaining water temperature at 6 to 10 DEG C; c. enabling wastewater to flow out from a head tank and enter the first-stage biological aerated filter from below; and d. enabling yielding water of the first-stage biological aerated filter to enter the secondary-stage biological aerated filter from bottom to top in the same way. The nitration types of the two stages of biological aerated filter are nitrous acid-type nitration, the stable accumulation of NO2--N in the yielding water is shown, the accumulation rate is 63.2% to 79.8%, and the accumulation time is up to 30 to 35 days. The method has the advantages that the biofilm process adopting the two stages of biological aerated filters can be used for solving the problems of high energy consumption at a high temperature (30 to 40 DEG C), and sludge bulking under a low DO (Dissolved Oxygen) condition, and the effective removal of organic matters in wastewater with a low C / N ratio (less than 3) and the lasting and stable accumulation of NO2--N are realized.

A storm water interceptor comprises an input conduit connected to a first treatment tank for delivering storm water to the first treatment tank and having an obvert elevation. Also, the interceptor comprises a lower conduit having an invert elevation, a substantially horizontal orifice at a first end connected to the first treatment tank and an exit orifice at an opposite end connected to a second treatment tank, whereby the substantially horizontal orifice at the first end of the lower conduit is below the invert elevation of the lower conduit. The interceptor further comprises an overflow conduit connecting the first treatment tank to the second treatment tank, whereby the overflow conduit is connected to the first treatment tank at a location above the obvert elevation of the input conduit. As well, there is an output conduit having a substantially horizontal orifice at a first end connected to the second treatment tank and an exit portion extending away from the second treatment tank, whereby an invert elevation of the output conduit is above an obvert elevation of the lower conduit, and whereby the substantially horizontal orifice at the first end of the output conduit is below the invert elevation of the output conduit. More than two treatment tanks may be connected in a cascading manner using the same general components and principles as an interceptor having two treatment tanks.

The invention relates to an energy-saving apparatus of air swept type central air-conditioner, especially a novel energy self-supplying numerical control energy-saving apparatus using air swept type central air-conditioner draught fan air exhausting wind power generation. The apparatus comprises a spray water cooling device, a digital control box, and an air injection temperature elevating apparatus, power self-generating apparatus, a water treatment and conveying apparatus, the air injection temperature elevating apparatus arranges an air injection showerhead in front of the condenser heat radiation fins of the air swept type central air-conditioning units, the air injection showerhead is mounted on the air supply pipe in series, the spray nozzle of the air injection showerhead faces to condenser heat radiation fins, the wind-driven generator is mounted on the draught fan air outlet on the top of the air swept type central air-conditioning units by a wind-driven generator bracket. The invention can supply self-generating power to generate cooling water to reduce temperature of the condenser heat radiation fins in condition of consuming little water and not increasing any power consumption, and can supply self-generating power to generate hot wind to increase temperature of the condenser heat radiation fins in winter, thereby achieving economy of electric power consumption.

The invention belongs to the technical field of aquatic feeds, relating to a special feed for living through the winter for tilapia. The special feed for living through the winter for the tilapia consists of raw materials and addictives. The invention is characterized in that the raw materials comprise the following components in parts by weight: 35 parts of rice bran, 35 parts of bean pulp, 13 parts of fish meal, 14 parts of wheat middling, 1.5 parts of meat and bone meal, 0.5 part of salt and 1.0 part of vegetable oil; the addictives are vitamin C and vitamin E, the content of the vitamin C is 800-1000ppm of the raw material by weight, and the content of the vitamin E is 100-200ppm of the raw material by weight; and the rice bran, the bean pulp, the fish meal, the wheat middling, the meat and bone meal and the salt are smashed, then fully mixed with the vegetable oil and granulated, drying and cooling are carried out, the vitamin C is prepared into a water solution with the concentration of 80-100g / l, the vitamin E is prepared into a vegetable oil solution with the concentration of 10-20g / l, the water solution with the concentration of 80-100g / l and the vegetable oil solution with the concentration of 10-20g / l are sprayed on the granulated mixture, and finally, sealed package is conducted after drying. The feed has high crude protein and crude fat contents and the added vitamins C and E, and has obvious effect with above 90% of overwintering survival rate in cultivating oreochromis aureus, gift tilapia and nile tilapia.

The invention discloses a power battery pack thermal management system and a vehicle. The power battery pack thermal management system comprises a shell, a water pump and a heat dissipator, wherein abattery module, a semiconductor refrigeration sheet and a water-cooling plate pipeline are arranged in the shell, one end of the semiconductor refrigeration sheet is connected to the battery module, the other end of the semiconductor refrigeration sheet is connected to the water-cooling plate pipeline, the water-cooling plate pipeline is connected to the water pump through a water pipe, and the water pipe is connected to the heat dissipator through a pipeline. According to the present invention, the cooling effect of the water cooling method is substantially improved compared to the natural air cooling and the active air cooling, the water in the water-cooling plate pipeline is introduced out of the high temperature device body, the water pump drives the water circulation, and the hot water in the water pipe is cooled by the heat dissipator, such that the water temperature in the water-cooling plate pipeline can be rapidly cooled; and the cooling liquid pipeline is not arranged in thebattery pack, such that the safety and the reliability can be effectively improved.

The invention relates to a multi-medium heat storage type warming water tank, which is a warming water tank for storing heat by using media such as electromagnetic oven heated water and the like, infusing hot water by using a manual or electric water feeding device and achieving heat storage and warming by using electricity, fuel combustion, hot water of a solar water heater and geothermal water. The warming water tank comprises a warming panel, a warming cavity, a plastic or metal plate, a cotton cloth layer and a water cavity, wherein the water cavity is provided with a water inlet pipe, a water outlet pipe, a stainless iron warming plate and a special bearing rack; a heat insulation layer and a plastic (or metal) protective shell are arranged outside the water cavity; the warming water tank for hands and feet of a single person is provided with a detachable heat insulation base; a water passage of the warming water tank for feet of multiple persons is provided with a three-way pipe and a heat resistant pipe connected with a water pipe of the water cavity; and the warming water tank mainly applied to warming of households and individuals and warming of feet of multiple persons also can supply hot water and shower, the heating transfusion device type warming water tank can be used for warming, and the manual or electric water feeding device is used for feeding water to the water tank. The warming water tank has the advantages of convenient operation, safety, environmental protection, energy conservation, sanitation, warming comfortableness, duration, high utilization of heat efficiency, wide available energy and durability.

The invention discloses a technical method for purifying and reutilizing jean silkete alkali waste liquid by a membrane method, which comprises the steps of alkali waste liquid collection, alkali waste liquid pretreatment, alkali waste liquid purification treatment, secondary use of alkali liquid reused to a production line mangle tank after preparation and the like. The purified alkali liquid obtained by the invention has the same quality as commercial alkali. When the purified alkali liquid obtained by the invention is prepared into the concentration required by silkete threads with high-concentration sodium hudroxide to be reused, the effect of the purified alkali liquid obtained by the invention is the same as that of the commercial alkali, so the invention has the advantages that: firstly, a large amount of sodium hydroxide is saved, the production cost is reduced, and each silkete thread can generate the economic benefits near million Yuan per year; secondly, the waste water quantity of high-concentration alkali liquid is reduced, so the addition of acid used for neutralization is reduced, the load of original treatment facilities is reduced, the investment of the waste water facility in the new production line is reduced, and the biochemical stability is enhanced; and thirdly, the production idea of clean production, recycling economy and environment protection is advocated.

The invention discloses an electrolytic cell device provided with separated cathode and anode chambers and used for preparing ozone water through electrolysis. The electrolytic cell device comprises an electrolytic cell, wherein cathode electrodes and anode electrodes are arranged inside the electrolytic cell; the bottoms of the cathode electrodes and anode electrodes are in complete contact with the bottom end of the electrolytic cell to divide the electrolytic cell into anode chambers and cathode chambers independent to one another; a proton exchange membrane for allowing ions to permeate, but preventing hydrogen from permeating into the anodic area is arranged at the separated part of each anode chamber and the corresponding cathode chamber. Through the adoption of the structural design, the anode chambers and the cathode chambers are separated and not communicated, so that water in the cathode chambers cannot enter the anode chambers, and further, the situation that hydrogen generated in the cathode chambers enters the anode chambers to be in neutralization reaction with ozone O3 is avoided; therefore, the consumption amount of ozone O3 is reduced, the production efficiency of ozone O3 is improved, and the content of ozone O3 is increased.

The invention discloses an angle-variable fan. An electromagnetic valve is used for controlling oil pressure to achieve control over parallelism and non-parallelism of blade angles. The problem of changing airflow intensity is solved at low cost, and therefore the effect of changing the airflow direction is achieved by means of positive and negative angle adjustment of non-parallel angles, and the purposes of automatically cleaning a water tank and improving the heat dissipation efficiency are achieved. Compared with the prior art, the angle-variable fan is simple in structure, low in cost and capable of meeting requirements of engineering application.

The invention provides a method and a device for removing carbon dioxide and hydrogen sulfide from methane by a water dissolving method. In the method, according to different solubility of various ingredients of the methane in water, carbon dioxide (CO2) and hydrogen sulfide (H2S) in the methane are dissolved in tap water by controlling pressure, liquid gas ratio and temperature of an absorption tower; and the water, in which the carbon dioxide and the hydrogen sulfide are dissolved, can be recycled through regeneration. The device is simple, convenient to operate, low in investment, and convenient in industrialized production; in particular, effect of removing CO2 and H2S is obviously improved through filling design in the absorption tower and use of a redistributor; and regeneration effect of the water is improved through use of a heat exchanger. In the methane treated by the device and the method, the methane content is obviously increased; the maximum of the methane content can reach 97 to 99 percent; and a heat value is obviously increased.

The invention relates to a separated solid-adsorption-type refrigerating system, which comprises a first adsorption unit, a second adsorption unit and a shell-and-pipe heat exchanger, wherein the first adsorption unit and the second adsorption unit are mutually communicated through a first pipeline and a second pipeline which are arranged in the shell-and-pipe heat exchanger. In the invention, when the first adsorption unit and the second adsorption unit alternatively carry out adsorption and desorption actions, the temperature of the first pipeline and the temperature of the second pipeline are reduced so as to realize the refrigeration effect, and further, the temperature of the water circulating in the shell-and-pipe heat exchanger can be reduced. In addition, because the shell-and-pipe heat exchanger does not need to be maintained under a vacuum environment for operation, the manufacturing cost of the separated solid-adsorption-type refrigerating system can be reduced; furthermore, the shell-and-pipe heat exchanger is mutually separated from the first adsorption unit and the second adsorption unit, so that the size of the whole system can be reduced.

A desalinization device is provided. The desalinization device may comprise a tank body divided into a condenser chamber and a vaporization chamber. The vaporization chamber is operative to receive salt water and transfer water vapor to the condenser chamber via a turbine. The remaining salt water may be concentrated with solid and removed from the vaporization chamber through a brine outlet. As the water vapor is transferred through the turbine, the water vapor experiences a temperature drop from the inlet to the outlet of the turbine. The temperature drop of the water vapor and water outlet introduced into the condenser chamber at a temperature about equal to the temperature of the water vapor at the turbine condenses the water vapor to fresh water. The fresh water produced by the device may be siphoned and reintroduced into the condenser chamber or used in another condenser chamber of a second desalinization device. Excess fresh water may be removed from the condenser chamber via fresh water outlet and stored in a fresh water reservoir.

The invention discloses a water tank for a heat-pump water heater, the heat-pump water heater and a use method, and relates to the technical field of water heaters. The water tank for the heat-pump water tank, the heat-pump water heater and the use method are invented to solve the problem that a heat-pump water heater in the prior art is low in energy utilization efficiency. The water tank for the heat-pump water heater comprises a water tank inner container, a water tank heat exchanger, a solenoid valve, a first water temperature sensor and a second water temperature sensor, and the water tank inner container comprises an upper container body part and a lower container body part. The water tank heat exchanger comprises a first heat exchange tube surrounding the outer wall of the upper container body part and a second heat exchange tube surrounding the lower container body part, an inlet of the first heat exchange tube is connected with a first flow path, and an outlet of the first heat exchange tube communicates with an inlet of the second heat exchange tube. The inlet of the second heat exchange tube is further connected with a second flow path, the first flow path and the second flow path both communicate with a first refrigerant opening, and an outlet of the second heat exchange tube communicates with a second refrigerant opening. The solenoid valve is arranged on the second flow path. The first water temperature sensor is arranged on the upper container body part, and the second water temperature sensor is arranged on the lower container body part. The heat-pump water heater is used for absorbing heat from air to produce hot water.

The invention relates to a hydrocarbon-ageing-resistant power cable for a petrochemical unit and a manufacturing method of the hydrocarbon-ageing-resistant power cable. The manufacturing method includes the steps that an insulating layer is evenly extruded on the periphery of each stranded copper conductor to form a power cable insulated wire core; a plurality of power cable insulated wire cores are stranded to form a power cable core. The periphery of the power cable core is sequentially wrapped by a flame-retardant fireproof longitudinal wrapping tape, an aluminum foil composite shielding tape, a hydrocarbon-ageing-resistant inside liner, a nylon inner sheath and a hydrocarbon-ageing-resistant outer sheath. The aluminum foil face of the aluminum foil composite shielding tape faces inwards and the inner side of the aluminum foil face of the aluminum foil composite shielding tape is provided with copper wire current steering wires. The components of the inside liner and the components of the outer sheath respectively comprise, by weight, 15 parts of PVC-SG2, 5 parts of NBR3305, 3-7 parts of adipic acid propylene glycol polyester,2-3 parts of epoxidized soybean oil, 0.6-1 part of barium stearate, 1-1.5 parts of lead sulfate tribasic, 0.05-0.1 part of diphenol propane, 3-5 parts of antimonous oxide, 0.1-0.5 part of chlorinated paraffin-52 and 0.3-0.5 part of dicyclopentadienyl iron. The hydrocarbon-ageing-resistant power cable is capable of resisting hydrocarbon ageing, small in external diameter and light in weight.

The invention discloses a device and method for fast drying after plastic extrusion pelletizing. A drying chamber is a transversely-arranged cylinder with two closed ends. A spiral conveying blade is arranged in the drying chamber. A driving device used for driving the spiral conveying blade to rotate is arranged outside the drying chamber. A feeding port hopper is arranged at the upper portion of one end of the drying chamber, and a drying terminal discharging port is formed in the lower portion of the other end of the drying chamber. Multiple microwave sources and multiple air outlet pipes are arranged at the upper end of the drying chamber in the length direction of the drying chamber. Multiple air supply openings are formed in the lower end of the drying chamber in the length direction of the drying chamber. The air supply openings are connected with a dry air producing device through an air supply pipe. A micro drying method is adopted for silane crosslinking polyethylene particles through the above micro drying device, so that the total energy consumption is reduced by 80% or above, and the production cost is reduced; the drying time is short, and the drying performance is good; no noise is generated in the drying process; and the quality is stably controlled and is not affected by environment weather changes.

The invention relates to the field of aquaculture, in particular to an ecological soft-shelled turtle breeding method. The method includes the steps of selecting a shallow pond or a river bend or a low-lying paddy field to serve as a soft-shelled turtle breeding pond; arranging escape prevention fencing walls on the periphery of the breeding pond, wherein the breeding pond is provided with a water inlet and a water outlet, the water inlet is higher than the water surface, the water outlet is lower than the bottom of the pond, and escape prevention nets are arranged on the water inlet and the water outlet respectively; arranging a fodder platform and a sunbathing platform on the breeding pond, wherein a sunshade is arranged above the fodder platform; planting trapa acornis in the breeding pond, wherein the planting area of the trapa acornis is half to three fourths the area of the breeding pond; breeding young soft-shelled turtles in the breeding pond after the turtles are disinfected, enabling the water temperatures to rise to be above 20 DEG C, and regularly throwing fodder to the soft-shelled turtles so that the soft-shelled turtles can be bred. According to the ecological soft-shelled turtle breeding method, the soft-shelled turtles and the trapa acornis grow in the same breeding pond, the body color of the bred soft-shelled turtles is especially black and bright, the meat of the bred soft-shelled turtles is firmer, and quality is obviously improved.

A permeable reactive weir having at least one outer wall which defines a chamber that holds reactive filter media.

The invention provides a highland barley ice-spring liquor brewing process method which includes following steps: (1) hulling highland barley and removing impurities to clean highland barley granules; (2) stir-frying the highland barley granules until a coke-fragrance is generated; (3) adding germinated highland barley to the stir-fried highland barley with uniform mixing, soaking the mixture for 24-72 h, taking the mixture out and washing and draining the mixture to obtain a highland barley raw material; (4) filling a pot with the raw material with addition of ice-spring water from snow mountain to steam-boiling the raw material for 30-90 min; (5) taking the raw material out and spread the highland barley raw material until the temperature is 30-40 DEG C; (6) mixing liquor yeast accounting for 0.5-2% of the raw material and saccharifying the raw material in a jar; (7) after 36-60 h with bubbles occurring, adding the ice-spring water and composite Tibetan liquor yeast with uniform stirring and performing heat-insulation fermentation, wherein a liquor index test is carried out during the fermentation process; (8) after 20-30 days, finishing fermentation when the alcohol degree of the liquor does not increase to obtain the highland barley ice-spring liquor. The method, on the basis of no adding any additives and preservatives, can prolong shelf life of the liquor, can reduce precipitation, can maintain the nutritional and functional components in the highland barley as much as possible, and can be used for preparing low-degree fermentation liquor being different in alcohol degrees (3-18 degrees) and tastes.

The invention particularly aims to the technical field of boiler air preheating. A disclosed air preheating and flue gas waste heat utilizing system comprises a flue gas channel (17), an air channel (20), an air preheater (9), a condensed water flue heat exchanger (8) and a condensed water air channel heat exchanger (19), and further comprises a condensed water feeding main pipe (15) and a condensed water returning main pipe (12); the flue gas channel (17) and the air channel (20) are connected with the air preheater (9); the condensed water flue heat exchanger (8) is arranged on the flue gas channel (17) at the back of the air preheater (9) in a flue gas flowing direction; the condensed water air channel heat exchanger (19) is arranged on the air channel (20) at the front of the air preheater (9) in an air flowing direction. According to the air preheating and flue gas waste heat utilizing system, flue gas discharge and heat exchange can be automatically adjusted according to change of operation conditions; on the premise of ensuring the safety of a heated surface and the regular operation of the system, the maximization of the heat circulation efficiency and the system economical efficiency is ensured.

The invention relates to a hydrocarbon-ageing-resistant control cable for a petrochemical unit and a manufacturing method of the hydrocarbon-ageing-resistant control cable. The manufacturing method includes the steps that an insulating layer is evenly extruded on the periphery of each stranded copper conductor to form a control cable insulated wire core; a plurality of control cable insulated wire cores are stranded to form a control cable core. The periphery of the control cable core is sequentially wrapped by a flame-retardant fireproof longitudinal wrapping tape, an aluminum foil composite shielding tape, a hydrocarbon-ageing-resistant inside liner, a nylon inner sheath and a hydrocarbon-ageing-resistant outer sheath. The aluminum foil face of the aluminum foil composite shielding tape faces inwards and the inner side of the aluminum foil face of the aluminum foil composite shielding tape is provided with copper wire current steering wires. The components of the inside liner and the components of the outer sheath respectively comprise, by weight, 15 parts of PVC-SG2, 5 parts of NBR3305, 3-7 parts of adipic acid propylene glycol polyester,2-3 parts of epoxidized soybean oil, 0.6-1 part of barium stearate, 1-1.5 parts of lead sulfate tribasic, 0.05-0.1 part of diphenol propane, 3-5 parts of antimonous oxide, 0.1-0.5 part of chlorinated paraffin-52 and 0.3-0.5 part of dicyclopentadienyl iron. The hydrocarbon-ageing-resistant control cable is capable of resisting hydrocarbon ageing, small in external diameter and light in weight.

An air-conditioning system for a vehicle may include a cooling unit including a radiator, a cooling fan to introduce air in the radiator, a water pump connected to the radiator through the cooling line, and a reserver tank provided on the cooling line to store a cooling fluid, a first condenser connected to the cooling line between the radiator and the reserver tank such that a cooling fluid is introduced and a refrigerant is introduced through a refrigerant line, and the refrigerant is condensed by heat exchange between the cooling fluid and the refrigerant, and a second condenser serially connected to the first condenser on the refrigerant line such that a condensed liquid phase refrigerant is introduced, and disposed on a front of the radiator such that the refrigerant is condensed by an air cooling type through heat exchange between the refrigerant and an outdoor air introduced on driving.

The invention discloses an all-year-round artificial propagation method of Tilapia aurea. The method can improve spawning rate, fertilizing rate and hatching rate of parent fishes, and produce high-quality fries with full length of 2 cm satisfying sale specification after culture for 18-20 days. The method provided by the invention can solve the long-term shortage problem of spring early fries in culture of Tilapia aurea, and ensure all-year-round supply of fries to realize balanced production.

The invention discloses an all-in-one evaporative cooling and mechanical refrigerating combined air conditioning unit usable in summers and winters. The all-in-one evaporative cooling and mechanical refrigerating combined air conditioning unit usable in summers and winters comprises an exhaust channel and an air supply channel which are independent and are formed by dividing the inside of a shell of the air conditioning unit; a mechanical refrigerating unit is arranged in the air supply channel; an evaporative cooling unit is arranged in the exhaust channel; and the mechanical refrigerating unit is connected with the evaporative cooling unit through a pipe network. The combined air conditioning unit recycles cold energy and heat energy of exhausted air by using heat pipes, and has a free cooling function and a pre-cooling effect on fresh air by using cold water; the leading role of evaporative cooling is sufficiently played; and the air conditioning unit has the advantages of environmental protection, high efficiency and energy conservation.