Applied research

■ Cryogenic preservation of biological samples

Species of cryogenic biological samples include blood products, stem cells, human germ cells, germplasm resources, tissue engineering materials, etc. except blood products and stem cells, the storage temperature is -196 ℃. Biological sample library related industries and equipment mainly include low temperature storage equipment, sample process equipment and supporting information management system. According to statistics, the domestic sample library purchases an average of nearly 20,000 low-temperature storage containers each year for sample storage.

Gaoxiang works closely with scientific research institutes to conduct research and development on cryogenic refrigeration technologies such as biological sample preservation, freeze-drying of pharmaceuticals and biological products, including automatic control of cryogenic storage, cryogenic medical equipment and cryogenic medical equipment, and is expected to be implemented in the near future The future is widely used in large and large biological sample library.



The continuous development of biological sample base construction

■ Freeze-drying technology for food, medicine and biological products

Freeze-dried, referred to as freeze-dried, is to freeze the water-based material into a solid state, and then make one of the sublimation of water from the solid state to gas, in order to remove moisture and save the material. Freeze-dried materials can be stored at room temperature, and stable performance, nutritional loss less.

The main application areas: freeze-dried drugs and biological products, such as antibiotics, Qian Su vegetarian, vaccines, etc .; freeze-dried foods, such as vegetables, fruits, fish,


Freeze-dried food, medicine, the output of 30% annual growth rate. At present, domestic freeze-dried machines are non-standard products, most of the plants are imitation of foreign equipment.



Freeze drying technology and its application


■ Low temperature crushing engineering technology


The ultra-low temperature technology is applied to some special fields such as medicine and foodstuff crushing, and some crushed objects are not easily crushed at room temperature, and its structural characteristics are changed by ultra-low temperature technology to achieve the purpose of crushing more easily.

The key technical point of the project is to ensure the low temperature and the dry state of the ground material (the large amount of heat generated in the grinding process will combine with the low temperature air to form the high humidity environment) during the grinding process.


The company is in the field of crushing with advanced technology and products in Zhejiang Feng Li Crushing Equipment Co., Ltd. signed a strategic cooperation agreement to carry out ultra-low temperature and crushing technical cooperation, together to create domestic cryogenic crushing engineering production, study and research base.



Ultra-low temperature crushing engineering technology


■ Including marine cryogenic deep processing of cold chain technology

Extremely diverse marine life, marine life, processing and refrigeration have different temperature and environmental requirements, and the preservation of the main determinant is the temperature.

Some specific marine organisms are using liquid nitrogen freezing technology, and liquid nitrogen due to high cost, poor convenience and other shortcomings, the application is subject to too many restrictions.


Gao Xiang is cooperating with Zhejiang Zhoufu Food Co., Ltd. and Daishan Tongli Aquatic Products Co., Ltd., a leading marine food product company, to research and develop the equipment and technology of cryogenic deep-processing cold chain complete set of marine organisms for specific temperature and environment as well as equipment such as vacuum coolers Replaces conventional liquid nitrogen refrigeration to ensure qualified, consistent low-temperature environments required for the processing and preservation of marine life foods.



Marine life cryogenic deep processing cold chain project



■ Replacing Refrigerant and Green Working Medium Technology

Refrigerant refrigerant is the blood of the refrigeration heat pump unit and plays a crucial role in the overall system. The Montreal Protocol calls for the complete phase-out of HFCs, such as refrigerants, which have a strong greenhouse effect and cause major damage to the atmospheric ozone layer by 2030. At present, China has eliminated ozone-depleting substances (ODS) CFCs and has entered a timetable for annual phase-out of HCFCS (mainly R22).


Gao Xiang is conducting an alternative study of carbon dioxide (R744, CO2). Carbon dioxide is a natural refrigerant with an ODP of 0 and a GWP of 1. It is safe, non-toxic, non-flammable and has a low critical temperature. It is a very good alternative to green refrigerants. However, the key technology of CO2 transcritical cycle is that the pressure of compressors, expanders, valves and heat exchangers is greatly increased, and high requirements are placed on the strength, wear resistance, processing precision and reliability of materials. Carrying out Green Refrigeration C02 Substitution of traditional HCFCS cold chain equipment technology research and development of great significance, if successfully developed, CO2 transcritical cycle is expected to form a system industry within 3 to 5 years and used in refrigeration and air conditioning related equipment .



Carbon dioxide refrigerant replacement technology upgrade