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We are ISO9001, CE, A2, CCS, DNV, ISO14001 , ASME U/U2, IATF16949, ROHS and PED certified, with materials and processes conforming to international standards.

Yes, we welcome client visits and technical audits. Virtual factory tours are also available upon request.

Shenshi combines in-house R&D, precision machining, and quality control to ensure high efficiency, durability, and cost-effectiveness.

Yes, we export to Asia, Europe, America, and the Middle East, providing both standard and custom designs.

Shenshi has over 20 years of manufacturing experience, exporting to more than 40 countries.

Yes, we offer OEM and ODM services for global clients, including design simulation, prototype validation, and mass production.

Our products are used in HVAC, LNG, LPG, LEG, ammonia, new energy vehicles, chemical processing, refrigeration, power generation, hydrogen systems, aerospace, aviation, data center and AI carbon capture.

Shenshi designs and produces plate, shell-and-tube, microchannel, and printed circuit heat exchangers for industrial and energy applications.

Shenshi’s factory and headquarters are located in China, equipped with advanced manufacturing and testing facilities to serve global clients.

Shenshi is a leading Chinese manufacturer specializing in plate, shell-and-tube, and microchannel heat exchangers. With over 20 years of R&D and production experience, we serve HVAC, chemical, and energy industries worldwide.

Cold storage manufacturing industry market in China       Cold storage is one of the important infrastructures in the cold chain logistics industry. In recent years, the quantity of cold storage in China has increased, but compared with the huge market demand is still insufficient. According to data from China Internet of Things, the demand for cold storage in the first half of 2018 exceeded 1.5 million square meters, up 14.9% year on year. At present, domestic cold storage demand is mainly concentrated in Beijing, Shanghai, Guangzhou and Shenzhen, as well as Fujian, Tianjin, Zhejiang, Jiangsu, Shandong, Chongqing, and Henan. (The darker the color, the greater the demand)        Cold storage, as an important tool in cold chain logistics, is related to a number of market segments. Among them, the third-party logistics enterprises have the largest demand for multi-cold storage, while the food processing enterprises have the smallest demand.        The demand for cold storage is growing day by day, and the concentrated area of the cold storage leasing market is close to the demand concentrated area. According to incomplete statistics, in the first half of 2018, the rentable area of cold storage in China exceeded 3.3 million square meters, with a year-on-year growth of 12.1%. The range of rental cold storage is mainly concentrated in Beijing, Shanghai, Guangzhou and Shenzhen, as well as Hubei, Shandong, Jiangsu, Liaoning, Shandong, and Henan. (The darker the color, the greater the demand) Through the comparison of cold storage demand heat map and cold storage rental heat map, it can be seen that the domestic cold storage supply and demand pattern has the following characteristics:        The supply and demand of cities such as Beijing, Shanghai and Guangzhou are flourishing. Fujian, Zhejiang, Guizhou, and Henan have strong demand and insufficient cold storage. These are mainly second-tier provincial capitals, which will face a new round of rapid economic development and consumption upgrading, and the cold storage market will further expand in the future.       Hubei, Hunan, Shandong and others are relatively surplus cold storage. First of all, in the cold storage business, to find the right positioning to achieve differentiation. Secondly, the cold storage surplus is not only because of less demand, but also may be because the cold storage itself can not meet the demand. The materials and analysis are from the "2018-2023 China Cold Storage Market Prospects and Investment Opportunities Research Report" released by China Institute of Commerce and Industry.

Principle of refrigeration equipment Freezing: the operation of using the low temperature source generated by refrigeration to cool the product from room temperature and then freeze it.Refrigeration: The operation of obtaining a low temperature source by means of a cooling effect resulting from a change in the physical state of the refrigerant.Types of refrigeration equipment: cold source production (refrigeration), material freezing, cooling. Refrigeration mode: piston type, screw type, centrifugal refrigeration compressor unit, absorption refrigeration unit, steam injection refrigeration unit and liquid nitrogen.Freezing mode: air cooled, impregnated and refrigerant through metal pipe, wall and material contact heat transfer and cooling device.Application:1. Freezing, refrigerating and freezing transportation of food.2. Cooling, cold storage, air-conditioned storage and cooling transportation of agricultural products and food.3. Food processing, such as freezing drying, freezing concentration and material cooling, etc.4. Air conditioning in food processing plants. Principle of refrigeration cycleMain devices: refrigeration compressor, condenser, expansion valve, evaporator. Refrigeration cycle principle: refrigerant in the low temperature low pressure liquid state when heat boiling evaporation become after low temperature low pressure steam, evaporated into gas refrigerants in the compressor, become the high temperature and high pressure gas, after the high temperature and high pressure condensate as high pressure liquid, high pressure liquid after expansion valve into low pressure low temperature, heat evaporation constitutes the refrigeration cycle of refrigerating machine again. Basic concepts and principlesRefrigeration capacity: under a certain operating conditions (i.e., a certain refrigerant evaporation temperature, condensation temperature, supercooling temperature), unit time refrigerant from the refrigerant removed heat. Also called refrigerant capacity. Under the same conditions, the refrigeration capacity of the same refrigerant is related to the size, speed and efficiency of the compressor.Direct refrigeration: in the refrigeration cycle, if the refrigerant-absorbing evaporator directly exchanges heat with the cooled object or the surrounding environment of the cooled object. It is generally used in single refrigerating equipment, such as ice cream freezing machine, small refrigerators and household refrigerators.Refrigerant: A working substance in a refrigeration unit that circulates continuously for refrigeration. The steam compression refrigeration device transfers heat through the change of refrigerant state. Refrigerant is an indispensable substance to realize artificial refrigeration.Indirect refrigeration: the use of cheap material as a medium to realize the heat exchange between the refrigeration unit and the cold consuming place or machine.Refrigerant: the refrigerant in the refrigeration device into the evaporator generated by the cold transfer to the cooled object, absorbed heat to the refrigeration device and then transferred to the refrigerant, its own re-cooling cycle.Principle of indirect evaporative refrigerationIndirect refrigeration principle: the refrigerant in the evaporator from the refrigerant to absorb cold, through the salt pump into the cold storage, and the cooling object or the medium of the workplace heat exchange absorb heat, back to the evaporator, the absorbed heat transfer to the refrigerant, its own cooling cycle. Commonly used refrigerant carrierCommonly used coolant: air, water, brine and organic water solution.Selection criteria: low freezing point, large specific heat capacity, no metal corrosion, chemical stability, low price and easy access to other factors, as a food industry for the coolant, often must have tasteless, odorless, colorless and non-toxic conditions.Although air as a load coolant has more advantages, only because of its small specific heat capacity, and as a gas to use its convective heat transfer effect is poor, so in food refrigeration or frozen processing, is used in the form of direct contact with food.Water is larger than heat, but its freezing point is high, so it can only be used as a refrigerant for making a cooling capacity above 0℃. If you want to make the coolant below 0℃, use brine or organic solution as coolant.The aqueous solution of sodium chloride, calcium chloride and magnesium chloride is usually called frozen brine. The most widely used frozen brine in the food industry is sodium chloride aqueous solution. Among the organic solution coolers, the two most representative coolers are the aqueous solution of ethylene glycol and propylene glycol.（Not the original）

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 Conditions and Features of the Heat Exchanger in Vehicle-Mounted Hydrogen Supply Systems for Fuel Cell VehiclesThe heat exchanger in a vehicle-mounted hydrogen supply system for fuel cell vehicles plays a critical role in maintaining optimal operating conditions. It utilizes a mixture of ethylene glycol and water as the heat transfer medium to regulate the temperature of hydrogen gas released from high-pressure storage bottles. During decompression, the hydrogen undergoes adiabatic expansion, which can cause its temperature to drop significantly. Affected by environmental conditions, the hydrogen’s temperature may reach as low as -40°C. The heat exchanger ensures that the hydrogen is warmed to a suitable temperature for efficient fuel cell operation, even under such extreme conditions.Microchannel heat exchangers are widely used in these systems due to their distinct advantages, which include:1. Compact Size and Lightweight Design: Microchannel heat exchangers feature a compact structure, occupying minimal space and reducing weight. This aligns with the stringent requirements for lightweight and space-efficient components in vehicle-mounted systems, enhancing overall vehicle energy efficiency.2. Safety and Reliability: Designed to withstand high-pressure and low-temperature conditions, microchannel heat exchangers ensure stable and safe operation over extended periods, minimizing the risk of system failures.3. Resistance to Hydrogen Corrosion and Embrittlement: Hydrogen gas is highly corrosive and can cause hydrogen embrittlement in metals, leading to material degradation. Microchannel heat exchangers are typically constructed with corrosion-resistant materials, such as specialized alloys or coatings, to effectively resist chemical erosion and physical damage, thereby extending service life.4. High Heat Transfer Efficiency: The microchannel design significantly increases the heat transfer surface area, enabling rapid and efficient temperature regulation of the hydrogen gas. This ensures optimal performance of the fuel cell system.Additionally, the heat exchanger must adapt to dynamic operating conditions, including vibrations, temperature fluctuations, and varying climatic environments encountered during vehicle operation. Therefore, the choice of materials, structural design, and manufacturing precision are critical to ensuring reliability under such challenging conditions.In summary, the microchannel heat exchanger in vehicle-mounted hydrogen supply systems is essential for efficient thermal management, ensuring stable hydrogen supply under extreme conditions. Its compact size, lightweight design, safety, reliability, and resistance to hydrogen corrosion and embrittlement make it a vital component in advancing the commercialization of hydrogen fuel cell vehicles.