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What are the main applications of HZSS's products?

What are the main categories of HZSS's products?                HZSS's main products: coaxial heat exchanger, shell & coil heat exchanger, shell & tube heat exchanger, high efficiency compact micro channel heat exchanger, plate fin micro channel heat exchanger, high efficiency mixed heat exchanger, micro reactor, micro channel continuous flow reaction device, and others high quality energy saving heat exchange products, services and system solutions.        The application scenarios of HZSS's heat exchanger mainly include the following categories:HVAC: water/ground source heat pump, (CO₂) heat pump water heater, industrial water cooler, low temperature heating equipment;Cold/cold chain: ice slurry;Food/household appliances: water purifier, ice maker, washing machine, dishwasher, milk cooling equipment;Titanium alloy: Marine air conditioner, pool heat pump, mariculture;Ships/transportation: Marine air conditioning, battery cooling system;Energy/power generation: SCO₂ power generation, nuclear power, hydrogen station, gas turbine;Oil & gas exploitation: LNG, hydrogen liquefied;Aerospace: aerospace, electronic equipment cooling system, environmental control package;Chemical/pharmaceutical: micro-reactor, micro-mixer, continuous reaction unit, tubular reactor.

Working condition of Heat exchanger for hydrogen fuel cell vehicle-mounted hydrogen supply system

What is working condition of “Heat exchanger for hydrogen fuel cell vehicle-mounted hydrogen supply system”?      The heat exchanger of the hydrogen supply system uses a mixture of ethylene glycol and water to exchange heat for the decompressed hydrogen from the hydrogen storage bottle (the lowest temperature of hydrogen affected by the environment is -40°C).      The advantages of microchannel heat exchangers used in vehicle-mounted hydrogen supply systems are small size, light weight, safety and reliability, and resistance to hydrogen corrosion and hydrogen embrittlement.

What direction is the micro-reaction process applicable?

What direction is the micro-reaction process applicable? The core of microchemical technology is the microchannel reactor. Compared with traditional chemical technology, the most important thing in micro-chemical technology is to research and develop reactors and rapid reaction process conditions suitable for micro-reaction systems.Applicable direction of micro-reaction process, Research shows that if a reaction process has the following characteristics, then micro-reactor technology will bring greater improvement.1. Fast liquide phase reaction2.Exothermic or endothermic reaction3. Reactions with low selectivity in the original processHZSS provides a series of microreactor products for customers to seamlessly connect from laboratory development to industrial production. (From laboratory to small test to pilot test to industrial production) HZSS microreactors' medel: Model Size Detention Annual flux SWR 156*130mm 10mL 24-144 Tons/year SW1 210*140mm 20mL 48-288 Tons/year SW2 359*230mm 120mL 240-1440 Tons/year SW3400*275mm300mL720-3840 Tons/yearSW4530*380mm560mL1440-7200 Tons/year

What is the classification of HZSS's micro-reaction equipment?

What is the classification of HZSS's micro-reaction equipment?Classification of micro-reaction equipment: micro-chaennel mixer, micro-channel heat exchanger, micro-reactor, micro-reaction experimental device. Micro channel mixer: Micro channel heat exchanger:                                   Plate etching,              plate stacking,              high temperature diffusion,    integrated moldingMicro reactor: Schematic diagram of micro reaction device Physical picture of micro reaction device

What is microreactor?

What is microreactor?Definition:      "Microreactor" originally referred to a small tubular reactor used for catalyst evaluation and kinetic research, with a size of about 10 mm.      Now it mainly refers to the three-dimensional structural elements used for chemical reactions manufactured by micro-processing technology or the highly integrated micro-reaction system including various functions such as heat exchange, mixing, separation, analysis and control, and usually contains an equivalent diameter of the order of magnitude. The fluid flow channels between micrometers and millimeters, chemical reactions occur in these channels, so microreactors are also called microchannel reactors.Features:      Using micro-channel/micro-structure precision processing technology, the characteristic size is within hundreds of microns, and the residence time is seconds/milliseconds;      Enhanced mass transfer: high efficiency, better selectivity;      Efficient heat exchange: high space-time efficiency, high production efficiency;      Continuously airtight, fast and controllable: Green chemical engineering, safer and more environmentally friendly, reducing the risk of hazardous chemicals;      Economical and reliable: low capital investment, low operating cost, low maintenance cost.Classification:      Liquid-liquid phase microreactor, gas-solid phase microreactor, gas-liquid phase microreactor, gas-solid-liquid microreactorThe reaction type of the microreactor can be selected:1. Violent reaction during the reaction2. Reactions with unstable reactants or products3. Rapid response to strict requirements for feeding and mixing4. Dangerous chemical reaction5. High temperature and high pressure reaction

What are the HZSS high efficiency compact microchannel heat exchangers?

What are the HZSS high-efficiency compact microchannel heat exchangers?      In 2011, Hangzhou Shenshi Energy Conservation Technology Co., Ltd. took the lead in the development and production of high-efficiency compact heat exchangers in the fields of aviation, aerospace, shipbuilding, nuclear, solar thermal power generation, petrochemical power generation, and hydrogen energy, etc.Products:Micro-channel heat exchanger for aerospace ring control cold pack,Air-antifreeze microchannel heat exchanger for aero-engine,Fuel-lubricating oil heat exchange titanium alloy high-efficiency micro-channel heat exchanger for aviation,(TA15) titanium alloy high-efficiency micro-channel heat exchanger for aviation,Titanium alloy helium-helium high-efficiency microchannel heat exchanger for aerospace,Air-refrigerant heat exchange micro-channel condenser for aerospace,Micro-channel cold plate for space satellite,Titanium alloy micro-channel cold plate for cooling of aerospace electronic components,Micro-channel cold plate for electronic components,Micro-channel cold plate (copper liquid cold plate) for electronic components and medical field,Microchannel vapor chamber for electronic components,Hydrogen-antifreeze heat exchange micro-channel heat exchanger for hydrogen energy hydrogenation machine (35MPa/70MPa),Steel/Stainless steel plate-fin heat exchanger for hydrogen liquefaction system and low temperature field,1300kW titanium alloy/iron-nickel alloy high temperature air and water/sea water plate-fin heat exchanger for marine gas turbine,Titanium alloy intercooler for yacht engine,FLNG natural gas compressor titanium alloy interstage cooler,Micro-channel heat exchanger/pre-cooler for SCO₂ power generation system,Molten salt-helium microchannel heat exchanger for nuclear power,PCHE for waste heat removal system,SCO₂-flue gas hybrid heat exchanger (H²Xs) for medium and heavy-duty trucks,High temperature heat exchanger for solid oxide fuel cell system (SOFC),......

How PCHE works?

How PCHE works?Working principle:       Printed circuit heat exchanger (PCHE) is a kind of heat exchanger in which metal plates are processed by electrochemical etching process into heat exchange plates with a certain structure, and then stacked together by diffusion welding. A tiny channel is formed between the various plates, and the working fluid flows through the tiny channel formed between the two plates. There is a partition in the middle to separate the fluid and exchange heat through the plates.Advantages:(1) Compared with shell-and-tube heat exchangers with the same heat load, the volume and weight can be reduced by up to 85%;(2) The pressure can reach 600 bar;(3) Unit thermal efficiency exceeds 98%;(4) The range of extreme temperature capability ranges from low temperature to 900 ℃;(5) It can effectively handle fluids or large temperature difference conditions caused by rapid temperature changes;(6) In a single device, multiple media can be allowed to implement the heat exchange process;(7) Able to achieve a small temperature difference as low as 2 ℃;(8) A series of anti-corrosion material manufacturing equipment can be selected;(9) No gasket (no leakage), no brazing, no tube sheet, with higher equipment integrity.

What is HZSS PCHE?

What is HZSS PCHE?       PCHE, a new type of heat exchanger with high compactness, can perform heat transfer under severe conditions such as high temperature and high pressure. Using chemical etching technology, it can etch PCHE heat exchange unit channels on the order of micrometers to millimeters.       And it is with highly compact:5000m ²/m³;high heat transfer coefficient:3000-5000/(m ²·K);small channel size:0.1-2mm;high pressure:30-250MPa;temperature resistance:-200℃-900℃;high reliability; Anti-corrosion;welding strength is equal to the strength of the base metal;no excess, no solder clogging;small size and long service life.       HZSS PCHE adopts vacuum diffusion bonding technology: in a vacuum environment, the weldment is closely attached and kept at a certain temperature and pressure for a period of time to make the atoms between the contact surfaces diffuse to form a connection.       Diffusion bonding features:1.The bonding strength can reach more than 95% of the strength of the bonding material matrix;2.No need to fill solder, so the temperature resistance and corrosion resistance of the weld depends on the material itself;3.There is no remelted as-cast structure in the joint, and the physical and chemical properties of raw materials are rarely changed, and the weld has no heat-affected zone;4.The bonded product has only microplastic deformation and small residual stress. It can be processed, reshaped and cleaned after bonding. It is an ideal bonding method for precision parts.       After repeated production inspections and tests, HZSS PCHE can be practically applied to supercritical CO₂ power generation systems, nuclear power, hydrogen energy, gas turbines, LNG offshore oil and gas platforms, aerospace, and cryogenic fields, etc.

Shenshi's shell & tube heat exchanger naming rules

Shenshi's shell & tube heat exchanger naming rulesIntroduction:1. Shenshi's shell & tube heat exchanger is used in the evaporator and condenser of cold and hot water units, modular units and other units;2. The product is a dry shell & tube heat exchanger, the tube side is the refrigerant, and the shell side is the refrigerant;3. The special threaded heat exchange tube is adopted, which has high heat exchange efficiency, small tube diameter, high compactness, low material consumption, and small volume; the heat exchange tube is integrally formed, without splicing, no solder joints, and strong reliability ;4. Spiral baffle is used on the shell side, the refrigerant flow is even, there is no dead zone, the risk of freezing is small, and it is not easy to scale and dirty;5. The refrigerant side uses a number of Shenshi's patented distributors to combine, and the distribution is even;6. Patented optimized design of fluorine side head, saving material cost; using laser welding, high pressure bearing, no leakage risk of traditional head;7. Design and manufacture in accordance with GB150, 151 standards;8. For different application scenarios, Shenshi's designs have standard models, heat pump models and high-efficiency models. Technical Parameter:Naming Rules:

What is the working principle of the Hydrogen Precooler?

What is the working principle of the Hydrogen Precooler?        The hydrogen pre-cooler developed by Shenshi can be applied to hydrogen refueling stations. Its advantages of explosion-proof, anti-freezing, and low temperature are the perfect solution to improve the reliability and advancement of hydrogen refueling stations in the future.The working principle of hydrogen precooler:        The volume expansion of high-pressure hydrogen after being filled into the hydrogen cylinder will release heat, which will cause the temperature in the hydrogen cylinder to rise. The higher the hydrogen filling rate, the faster the temperature of the hydrogen cylinder will rise. Due to the material of the hydrogen cylinder, etc. The internal temperature of the hydrogen cylinder must not exceed 85°C during use. Therefore, in order to ensure the hydrogen filling rate, the hydrogen must be pre-cooled before the hydrogen filling. Commonly used hydrogenation machines are divided into 70MPa and 35MPa. The 35MPa hydrogen precooler is suitable for 35MPa hydrogenation machines.        Hydrogen-antifreeze heat exchange microchannel heat exchanger for hydrogen energy hydrogenation machine (corresponding to 35MPa and 70MPa hydrogenation machines):Small size and light weight can be integrated inside the hydrogenation machine:The dimensions of the 35MPa hydrogen cooler are 400*250*170mm;The outline dimension of the 70MPa hydrogen cooler is 400*250*220mm.Corresponding to various filling stations (online hydrogen production type, external hydrogen supply type, etc.):35MPa hydrogen cooler working temperature -20~45℃;35MPa hydrogen cooler working temperature -40~45℃.Hydrogen cooling for single or double gun models can be provided:35MPa model use pressure 48.3MPa (max);The 70MPa model uses a pressure of 99MPa (max).

The difference between tube heat exchanger and plate heat exchanger?

The difference between tube heat exchanger and plate heat exchanger?The structure of the tube heat exchanger is fully optimized and integrated to make the structure more reasonable and the performance more stable. The sleeve body is bent into a laminated spiral shape with the tube bundle of the copper tube inserted through it, and the steel fixing bracket is welded to the sleeve type main body to form a solid, and the two ends of the sleeve are respectively led out of the refrigerant and cooling water connection sleeve.Tubular heat exchanger is a special product designed and manufactured for small and medium chilled water (heat pump) units. It is widely used in water ring heat pump units, water source chilled water (heat pump) units, air source chilled water (heat pump) units, ground source chilled water (heat pump) units and other refrigeration equipment.Plate heat exchangers are highly efficient heat exchange equipment. There are two kinds of practical applications, one is the umbrella plate heat exchanger manufactured by spinning method, and the other is the flat plate heat exchanger manufactured by stamping method. Its structural features are as follows: The plate heat exchanger is easy to disassemble, clean and repair , And the volume is small and the floor space is small. The innovative shell and tube heat exchanger independently developed by Shenshi further optimizes the performance of traditional tube heat exchangers.It adopts 7mm high-efficiency heat exchange tubes and spiral baffles. The water-side heat exchange is better than traditional baffles. It adopts Shenshi's patented distributor, which has good cooling distribution effect and high heat exchange efficiency.The fluorine side seal head adopts laser welding, which bears high pressure and has no leakage risk of traditional gaskets. The heat exchange tube is integrally formed, no splicing, no solder joints and water contact, strong frost resistance and strong reliability;The patented optimized design of the fluorine side seal head saves material costs. The small heat transfer tube uses a small shell, which is highly compact and saves materials and volume.

What is the coaxial heat exchanger in the chiller?

Whatis the coaxial heat exchanger in the chiller?     There are black pipes in the middle of every chillers, and many peoplewill ask, what is this and it takes up sucha large space. This is thecoaxial  heat exchanger in the chiller.What is a coaxial heat exchanger?Let's explain it below. Figure 1 Chiller    Taking Hangzhou Shenshi coaxial heat exchanger as an example, the coaxialheat exchanger is a kind of circul-ating heat exchanger. Coaxial heat exchangeris also divided into single-system heat exchanger and multi-system heat exchanger. The more heat exchangersystems, the higher the heat exchange efficiency. Figure 2 Single-system,dual-system and multi-system exchanger    Shenshi coaxial heat exchanger is generally composed of two tanksconcentrically set inside and outside. The ref-rigerant flows in the sandwichchannel between the inner tube and the outer tube, and the water flows in theinner tube, and the heat of the refrigerant is transferred to the watercarrier. The use of high-efficiency spiral grooved tubes increases the heat exchangearea, at the same time strengthens the heat exchange between the refrigerant and the water side, and enhances the heat exchange capacity of the heatexchanger. Figure 3 Multi-materialspiral grooved pipe    Hangzhou Shenshi coaxial heat exchanger is outsourced through special electrophoresis treatment to provide complete and comprehensive anti-corrosion protection for the inner cavity,weld, edge and other weak parts of the casing. Service life. The coating filmis fine, uniform and smooth, and has the best adaptability for products that require precision. Figure 4Electrophoresis      When coaxial heat exchangers were not widely used, immersion heat exchangers were used in the chiller ind-ustry. Compared with immersed heat exchangers, is thereany difference between using coaxial heat exchangers now? Chiller can usecoaxial heat exchangers to replace the previous immersed heat exchangers.Because immers-ed heat exchangers and other forms rely on the naturalenvironment, the heat exchange efficiency is very low, so people think of usingforced exchange to improve heat exchange. The efficiency of the circulatingheat exchanger is one of the most widely used methods. Figure 5 Immersion heatexchanger and coaxial heat exchanger      Whatare the advantages of  coaxial  heat exchangers?      1.The structural features are concise and clear, modular design, and easyadjustment. Non-standard customiza-tion can be made according to the needs ofenterprises, and the shape and size can be adjusted, such as rectangle, round,double helix, spiral, trumbone , etc.      2.High heat exchange efficiency. It is a pure counter flow heat exchanger. Inaddition, the surface of the inner tube is embossed to enhance the heattransfer on the fluorine side. Under the same working conditions of the inner tube of the same length, the condensation heat transfer performance of R410arefrigerant is improved by at least 50% .      3.Few solder joints and strong reliability.      4.Good freezing resistance, not easy to scale, and long service life.

What are the advantages of titanium heat exchangers?

What are the advantages of titanium heatexchangers?           Titaniumheat exchangeris a heat exchange device made of high-quality titanium tubes that transferspart of the heat of the hot fluid to the cold fluid. Figure 1 Titanium heat exchanger     First, let's first understand theknowledge of the metal material "titaniumand titanium alloy" used tomake tita-nium heat exchangers. Titanium is a silver-white transition metalcharacterized by light weight, high strength, meta-llic luster, and resistanceto wet chlorine corrosion. Specifically, the density is small. The density ofmetal titanium is 4.51g/cm3, which is higher than aluminum and lower thansteel, copper, and nickel, but the specific strength is the first among metals.Titanium and oxygen have a great affinity. In the air or in anoxygen-containing medium, a dense, strong adhesion and inert oxide film isformed on the surface of titanium, which protects the titanium matrix fromcorrosion. Even due to mechanical wear, it will quickly heal itself orregenerate. This indicates that titanium is ametal with a strong tendency topassivation. The titanium oxide film always maintains this characteristic whenthe medium temperature is below 315℃. Figure 2 Titanium      In order to improve the corrosion resistanceof titanium, surface treatment technologies such as oxidation, ele-ctroplating,plasma spraying, ion nitriding, ion implantation and laser treatment have beendeveloped to enhance the protection of the titanium oxide film and obtain thedesired corrosion resistance. effect. In response to the need for metalmaterials in the production of sulfuric acid, hydrochloric acid, methylaminesolution, high-temperature wet chlorine and high-temperature chloride, a seriesof corrosion-resistant titanium alloys such as titanium-molybden-um, titanium-palladium, titanium-molybdenum-nickel, etc. have been developed.Titanium uses titanium-32 molyb-denum alloy, titanium-0.3 molybdenum-0.8 nickelalloy is used in environments where crevice corrosion or pitting corrosion iscommon, or titanium-0.2 palladium alloy is used locally in titanium equipment,and good results have been obtained. Figure 3 Titanium      Titaniumheat exchanger is made of high-quality titanium tubes. In terms of physical properties,titanium tubes have many advantages such as light weight and superiormechanical properties. Titanium is strong, and the tensile strength of puretitanium can reach up to 180kg/mm2. Some steels are stronger than titaniumalloys, but the speci-fic strength (the ratio of tensile strength to density) oftitanium alloys exceeds that of high-quality steels. In addition, titaniumalloys have good heat resistance, low temperature toughness and fracturetoughness. The new titanium alloy has good heat resistance and can be used fora long time at 600℃ or higher. The titaniumheat exchanger is made of high-quality titanium tubes. In terms of physicalproperties, titanium tubes have many advantages such as light weight andsuperior mechanical properties. Titanium is strong, and the tensile strength ofpure titanium can reach up to 180kg/mm2. Some steels are stronger than titaniumalloys, but the specific strength (the ratio of tensile strength to density) oftitanium alloys exceeds that of high-quality steels. In addition, titaniumalloys have good heat resistance, low temperature toughness and fracturetoughness. The new titanium alloy has good heat resistance and can be used fora long time at 600℃ or higher.Titanium chemical properties      In terms of chemical properties, titaniumexhibits good stability and good corrosion resistance in a variety of industrial solutions. Industrial pure titanium is an excellent material forrefrigeration equipment accessories. Indust-rial pure titanium can be widelyused in organic compounds, alkaline solutions, salt solutions and other media, and it is not easy to react with it, and has excellent corrosion resistance;pure titanium has low concentration of hydro-chloricacid, sulfuric acid, nitricacid and other inorganic acids at room temperature. Good corrosion resistance; but with the increase of medium concentration and working temperature,industrial pure titanium is easy to chemically react with the above-mentionedinorganic acid, which reduces the corrosion resistance of titanium. Therefore,att-ention should be paid to the concentration and concentration of the mediumduring heat exchange. Operating temperature.     Titanium heat exchangers are not easy tolose metal ions, so they can make full use of this non-magnetic feature to be usedas heat exchangers for special purposes such as pharmaceuticals and food. Dueto the strong corrosion resistance of titanium, the heat exchanger has a longservice life and low maintenance costs during use.     Take HangzhouShenshi Energy Saving Technology Co., Ltd. as an example. Hangzhou Shenshihas focused on heat exchangers for more than 10 years. In the past five years,it has accumulated many technologies and patents in the field of heat exchangers and micro-channel reactors. HangzhouShenshi has developed Marine Condensing Coils、SwimmingPool Heat Pump、Mariculture。      ShenshiMarine condensing coils are made oftitanium with enhanced grooveline technology to achieve high efficient and highcorrosion resistance. Using sea water as cold source for providing heat/coldair, the marine AC can supply comfortable working can living condition for themarine. Figure 4 example of coaxial heat exchanger for marine AC      ShenshiShell and pipe heat exchanger isa kind of high efficiency heat exchanger which is composed of high efficient Ωstyle inner pipes and shell of baffle plastic plate(-PA6). It has the advantages of shell and tube heat exchanger and plate heat exchanger. Figure 5 Ω-type titanium tube Figure 6 Shell and pipe heat exchanger     Hangzhou Shen's titanium heat exchangerhas many advantages and is widely used in all kinds of seafood farm-ing, seawater heat exchange, salt water heat exchange, chemical industry,refrigeration, electroplating industry , central heating and other industriesand fields.

What are the main factors affecting the operation of the heat exchanger?

Whatare the main factors affecting the operation of the heat exchanger?           Since the emergence of heat exchangers inthe 20th century, heat exchangers have a history of nearly100 years. The formsof heat exchangers are becoming more and more abundant. Heat exchangers areused in factories, hotels, restaurants, officebuildings, and entertainment venues. The entertainment venueshave been widelyused. Figure 1 Chiller           Heat exchangers are used in the industrialfield. In the industrial water consumption, cooling wateraccounts for morethan 60% of the total water. However, the cooling water in the circulatingsystem, due tothe increase in water temperature, the change of water flowspeed, and the evaporation of water, Concen-tration of inorganic ions andorganic substances, cooling towers and pools exposed to sunlight, wind andrain, dust and debris, as well as equipment structure and materials, etc., areprone to a large number ofmicroorganisms. Equipment corrosion and deposits, aswell as the resulting slime, dirt and other problemsthat block pipelines, evenshut down equipment and cause economic losses. Figure 2 Blocked pipe Figure 3 Scaling on theinner wall of the pipe Figure 4 Scaling on theouter wall of the pipeline      According to observation and research, morethan 90% of ordinary shell and tube heat exchangers havevarying degrees ofscaling problems. From the heat transfer rate equation Q=KS△tm, it can be seen that themain factors that affect the heattransfer effect of the heat exchanger are: heat transfer coefficient K, heattransfer area S and average temperature difference △t.The heat transfer area S decreases, which causes theheat transfer performanceto deteriorate, and the heat transfer efficiency decreases. The averagedecrease rate can reach more than 30%. In addition to directly causing energyloss, it will also lead to a reduction in the operating load of productionequipment and affect production capacity. In addition, equipment foul-ing willalso increase fluid flow resistance, which will increase equipment powerconsumption and periodic cleaning, which also increases equipment operatingcosts.     After the heat exchanger is fouled, itsthermal resistance increases significantly. At this time, the flow of therefrigerant (or heating medium) remains unchanged, and the fluid is not easy totransfer the cold (or heat) to the working fluid side to be exchanged, and itsheat exchange efficiency will be Significantly wor-se. In this situation, if theprocess still requires the original exchange efficiency to be maintained, it is neces-sary to increase the inlet water pressure while increasing the flow rateinto the heat exchanger, which results in a double increase in energyconsumption.     Obviously, this requires very highdescaling ability of the heat exchanger equipment itself. Take the new generation of shell and tube heat exchangers developed by Hangzhou Shenshi Energy Saving Technolo-gy Co. Ltd.Shenshi's 130KW shell and tube heat exchanger is usedfor evaporators and condensers of hot and cold water units, modular units andother units; 7mm heat transfer tube upgrade, spiral baffle optimization, andmultiple Shenshi's patented distributors are used in combination, It can effectively improve the descaling ability of theheat exchanger itself, thereby improving the heat exchange efficiency of theheat exchanger. Figure 5 Shen's 130KW shell and tubeheat exchanger Figure 6 Inner tube wall Figure 7 Shenshi'spatented design-distributor    Hangzhou Shenshi's newgeneration of shell and tube heat exchangers have good performance, safe use,long service life, small size and high cost performance. They are widely usedin micro-channel heat exchanger formicro water chiller.