-80℃~-160℃ cryogenic unit
The cryogenic unit developed and produced by our company, with two or more imported compressors overlapping, to achieve a low temperature of -80 ° C ~-160 ° C, for customers who need a low temperature cold source of -80 ° C ~-160 ° C to provide a good cryogenic solution, -80 ° C ~-160 ° C cryogenic unit in many fields to replace liquid nitrogen, To provide customers with a stable cold source at the same time also created considerable economic benefits, favored by the majority of customers.
Because the cryogenic unit is applied to more industries and uses, it can not be fixed, and most of them need to be tailored according to the actual situation of the user. We might ask the following questions:
1. What is the temperature? What is the volume required?
2, what materials to deal with? How much does it weigh? Its specific heat capacity, heat of vaporization, heat of freezing?
3. How long does it take to cool or heat? Each production cycle?
4, other heat loss: reaction heat, stirring heat, circulation pump, pipeline, liquid storage tank;
Based on the answer to the question, both parties discuss an optimal solution.
In the production and construction, we all use world-renowned brand parts, such as: Valley wheel, Bizer, Danfoss, Alfa Laval, Siemens, Schneider, etc., large system adopts screw compressor, and dispenses economizer to make the system more efficient. The small system uses a semi-enclosed piston compressor. Stainless steel plate heat exchanger provides maximum heat transfer area in a compact space. Scope of application
Chemical industry: rubber crushing, low temperature grinding, rectification and purification;
Pharmaceutical: synthesis, hydrolysis, esterification, etherification and other processes requiring temperature control;
Metal treatment: low temperature quenching, low temperature assembly;
Food: tuna and other ultra-low temperature food processing and storage;
Electronics: Recycling of waste electrolyte in battery production, environmental testing of components;
Military industry: weapons storage;
Aerospace: Heat sink test of cold plates, simulation test of parts at low temperatures.
Comparison of cryogenic units with liquid nitrogen
The boiling point of liquid nitrogen at standard atmospheric pressure is -196℃, the cooling temperature is low, the system installation is simple, and the initial investment is small. Its disadvantages are: high operating cost, can not be recovered; The dependence on supply is strong, once the supply is interrupted, the production will be directly affected; Temperature control is difficult, and storage devices have potential security risks.
Cryogenic unit evaporation temperature -80℃ ~ -160℃, its advantages are: independent cooling, no loss, low operating costs, as long as ensure the supply of power and cooling water, you can ensure the reliable operation of the unit; The unit has a high degree of automation and adopts "one-button" operation, which can accurately control temperature. Simple routine maintenance is required.
It is calculated that the cost of using liquid nitrogen is 5-10 times that of using cryogenic units.
Usually between the cryogenic unit and the user's reactor, a set of cryogenic circulation system is required.
The main reasons are:
1. The thermal load of the user site is usually far away from the refrigeration room, and the load area is usually a clean, quiet, explosion-proof area. The refrigerant circulation system can separate the cryogenic unit from the load area, making the whole system more safe and reliable;
2. Usually, the cold source cools the materials in the reaction tank through the heat exchange coil in the reaction tank, and once the heat exchange coil leaks, it may pollute the material, and the refrigerant system usually uses the same substance as the material body or the solvent, so even if the leak, the possibility of pollution can be completely avoided;
3. The operator of the hot load area only needs to operate the refrigerant system according to the need of the cooling amount, which simplifies the work of the operator.
4. When the user load is too large, the load area to achieve rapid cooling or return temperature, the cryogenic unit itself refrigerant can not meet the requirements, to provide a large enough cooling capacity, there must be enough refrigerant, but at room temperature, the low temperature refrigerant becomes gaseous, the volume and pressure become large, the equipment can not withstand. The refrigerant circulation system can save the cooling capacity and load changes
When large, use refrigerant to control, so that not only safe, but also accurate temperature control, energy saving.

型號	工作溫度 （℃）	制冷方式	負(fù)載： 乙醇/二氯甲烷 （kg/小時(shí)）	制冷量（KW）	能耗（kw）	日用液氮量（升）	日用電能（度）
HY-80-6SD	-60～-80	雙 機(jī) 復(fù) 疊	15/30	1	6	1056	144
HY-80-12SD			30/60	2	12	2112	288
HY-80-30SD			75/150	5	30	5280	720
HY-80-60SD			150/300	10	60	10560	1440
HY-80-120SD			300/600	20	120	21120	2880
HY-80-240SD			600/1200	40	240	42240	5760
HY-80-600SD			1500/3000	100	600	105600	14400
HY-120-16TD	-80～-120	三 機(jī) 復(fù) 疊	24/48	2	16	2112	384
HY-120-40TD			60/120	5	40	5280	960
HY-120-80TD			120/240	10	80	10560	1920
HY-120-240TD			360/720	30	240	31680	5760
HY-120-400TD			600/1200	50	400	52800	9600
HY-140-8FD	-100～-140	單 機(jī) 復(fù) 疊	10/20	1	8	1056	192
HY-140-15FD			30/60	3	24	3168	576
HY-140-25FD			50/100	5	40	5280	960
HY-140-100FD			200/400	20	160	21120	3840