Sale -135 ℃/-150 ℃ Industrial Freezer
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Zhejiang Heli Refrigeration Equipment Co., Ltd.
Zhejiang Heli Refrigeration Equipment Co., Ltd. is China Industrial Freezer(-135 ℃/-150 ℃ ) Manufacturer and Sale Industrial Freezer(-135 ℃/-150 ℃ ) Factory. As one of the early domestic players in ultra-low temperature refrigeration, Heli integrates R&D, manufacturing, sales, engineering, and after-sales services. The company employs 150 people, including nearly 50 in R&D and engineering, and operates a 25,000 m² facility with dedicated R&D, testing, and production lines. Driven by innovation and independent R&D, Heli has achieved over 60 technological breakthroughs and holds 40+ patents. It has also participated in key municipal science projects and contributed to national and industry standards. Heli’s product lines cover biomedical storage, lab instruments, aquatic deep-cold kitchen equipment, cold chain logistics, quick freezing systems, industrial environmental solutions, household refrigeration, and smart retail. Its solutions are widely used across biotech, research, marine, cold chain, healthcare, and consumer sectors.
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Industry Knowledge Exhibition

The Working Principle of Industrial ULT Freezers

Industrial Ultra-Low Temperature (ULT) freezers are sophisticated refrigeration systems designed to maintain extremely low temperatures, typically ranging from -40°C to -150°C. These freezers are critical in industries such as pharmaceuticals, biotechnology, and research, where precise temperature control is essential for preserving sensitive materials.

The working principle behind an industrial ULT freezer revolves around refrigeration cycles similar to those in standard freezers, but with a few key differences. The core of the system includes a compressor, evaporator, condenser, and expansion valve. The compressor circulates refrigerant gas, which absorbs heat inside the freezer, transforming from a gas to a liquid. The liquid refrigerant travels through the expansion valve, where it evaporates, absorbing even more heat from the freezer interior. This cycle continues until the desired ultra-low temperature is achieved.

To maintain such low temperatures, industrial ULT freezers often employ cascade refrigeration systems, using two or more stages of refrigeration to reach the conditions required. This allows for better efficiency and stability. Additionally, insulation and the use of advanced cooling technologies like cryogenic nitrogen or liquid nitrogen are often integrated into these freezers to maintain consistent temperatures and reduce energy consumption.

The Application of -135°C/-150°C Industrial Freezers

Industrial ULT freezers, capable of reaching temperatures as low as -135°C or even -150°C, have a variety of critical applications in various sectors. One of the primary fields of use is the pharmaceutical and biotechnology industries, where these freezers are essential for storing vaccines, biological samples, enzymes, and other temperature-sensitive materials. For instance, certain vaccines, such as those for COVID-19, require storage at ultra-low temperatures to remain viable and effective.

Another key application is in scientific research, where ULT freezers are indispensable for preserving cells, tissues, and genetic material. Researchers often need to store biological specimens at extremely low temperatures to prevent degradation, especially for long-term studies. The preservation of cryopreserved cells, embryos, and stem cells relies heavily on ULT freezers to ensure these valuable materials can be safely stored over extended periods.

Additionally, ULT freezers play a crucial role in the food industry, where they are used to freeze perishable goods at low temperatures to preserve freshness and prevent microbial growth. They are also utilized in the storage of high-value food products like seafood, meat, and ice cream, which require constant temperature monitoring to avoid spoilage.

The Importance of Industrial Stand-Up Freezers

Industrial stand-up freezers are versatile storage solutions widely used in various industries, especially for those that require long-term, large-scale storage of temperature-sensitive materials. These freezers come in upright, vertical configurations, which offer more efficient use of floor space compared to chest-style freezers. Their compact, upright design allows for better organization and easier access to stored goods.

One of the primary reasons for the importance of industrial stand-up freezers is their role in sectors like pharmaceuticals, where these units are designed to handle delicate, temperature-sensitive inventory, such as vaccines, pharmaceuticals, and research specimens. The ability to maintain ultra-low temperatures in a stable and consistent manner ensures that valuable materials, such as biological samples or medicines, are preserved and stored safely. Any fluctuation in temperature could potentially compromise the integrity of these materials, which is why reliability and accuracy are crucial for industrial stand-up freezers.

In addition to the pharmaceutical sector, stand-up freezers are also used extensively in laboratories, hospitals, and research facilities. These settings demand precise temperature control, and stand-up freezers are often equipped with alarms and monitoring systems to notify users of any temperature deviation. Furthermore, the ability to store large quantities of products in a compact space is an advantage in environments where storage capacity is limited but demand is high.