Products
Chillers
ProCool is customized ultra low temperature processing equipment. Each system is tailored to meet the specific requirement of each application, and under this special design we would provide high quality performance and reliability.
The ProCool system is particularly suited for the chemical and pharmaceutical industries, such as:
n Cooling exothermic chemical reactions
n Crystallization and precipitation processes
n Condensation of volatile vapors
n High vacuum distillation processes
The system provides various solutions covering a wide range of need:
n Base on different operate temperature; the maximum cooling capacity is 1000KW.
n Operating temperature between -30℃～-120℃
n Reciprocating and screw compressor system
Turnkey systems including storage tanks for cooling medium, circulating pumps and inter-connecting pipework
Technical Features
Reliable-cryogenic refrigeration systems require careful design and assembly to ensure reliability. Tianli’s ProCool equipment incorporates the following features to enhance the reliability:
n Select the best components available worldwide such as: Mycom Siemens, Bitzer, Danfoss…
n Mini systems employ two stages, semi-hermetic reciprocating compressor or two stage screw compressor systems.
n Benefit from electronic expansion valve, the system has more sensitive and higher precision with easy control and maintenance.
n Individual heat gases ventilation system, overpressure protect, capacity adjustment.
n Safety device such as relief valve, pressure switch provide protection in the event of abnormal operating temperature and pressure.
n Environment-friendly & economic refrigerant gases are available.
High stage- HCFC R22 optionally HFC R404A
Low stage- HFC R23 optionally R508B
n Systems assembled by qualified and certified technicians.
Efficient –At low temperature, the small temperature differences between the refrigerant and the medium being cooled necessitates highly efficient heat exchange:
n Stainless steel plate heat exchange provides an extremely surface area for heat exchange within a compact package.
n Screw compressors provide a compact alternative to reciprocating model.
Control-Continuous monitoring of the equipment performance is critical to obtaining the maximum capacity and reliability from the equipments. Tianli has developed a control system especially for ProCool system.
n Base on the proven SIEMENS system, it is possible to provide display and alarms for the critical.
n Display the essential Parameter of the system including temperature and pressure of the system and the alarm reasons.
Turnkey systems-Tianli is able to provide complete auto-running system, including:
Insulated storage tank for cooling medium equipped with level indicator.
Pumps for circulating cooling media to the process
Interconnecting pipework between the refrigeration unit and coolant tank
Interconnecting pipework between the cooling media tank and process
Circumspect Business Support
Our technicians will communicate with the customer at the beginning through the telephone or at the customer’s company.
We can provide the whole system project based on the feature of the customer’s technics.
We can arrange the customers to inspect the equipment at our factory.
Professional manufacture
The technician will confirm every design data based on the beginning Technical communication.
Engineers choose components good in capability and reliable in quality, and then perfect the project in order to improve the system’s efficiency.
Workers assemble every seriously parts according to craftwork flows.
Checkers go through every welding line to insure the quality of equipments.
Perfect service
Installation
After the equipments arrived, we send the professional engineers and technician for your install and debug locale, to insure the circulated safe and preference.
Training We supply the professional training for the workers including theories and practice. As well as the equipment maintenance, insure the equipment can run efficiently and safe in order to save the operating cost. Technology sustain
Tianli Team will supply the perfect service run true from form, we promise to give you technical consultation in 24 hours and get to the locale in 48 hours if the equipments have any problem.
FAQ
Q: The model of Cryogenic Chiller?
A: Each Cryogenic Chiller is specially designed according to customers’ requirements (operation temperature & refrigeration load). The technician will confirm the design requirements, viz. evaporation temperature and refrigeration load together with customers during the beginning Technical communication. Only both the operation temperature and refrigeration load are certain, the model of cryogenic chiller can be confirmed. (Only temperature or refrigeration load cannot confirm the model of cryogenic chiller)
Q: How about the price and delivery time?
A: Since cryogenic chillers are customer-made, their prices will be different accordingly. For delivery time, as cryogenic chillers require high system liability, all the main parts are imported, that means, the purchasing time will be comparatively long. Usually the delivery time of cryogenic chillers will be 2~5 months. Air freight is available at customers’ request for decrease the purchasing time, however the extra fee should be needed.
Q: The cooling media circulating system?
A: Usually one cooling media circulating system is needed between Cryogenic Chiller and Customers’ working vessel. There are three main reasons. First, normally the distance between the customers’ working vessel and the refrigeration plant is a bit far. Working vessel is often in anti-explosion area, Cooling media circulating system can separate Cryogenic Chiller from the refrigeration plant, which make the whole system safe and reliable. Second, the cooling media cool down the solvent inside the customs’ working vessel via heat-exchange coil. Once there’s leak in heat-exchange coil, the solvent will be polluted. While the solvent used in cooling media system is same with the solvent, therefore, this situation will be avoided. Third, it simplifies the work of the operator of Working Vessel.
Q: The working range of Cryogenic Chiller?
A: Normally, the lowest evaporation temperature of Cascade Cryogenic Chiller is -95℃. Since the heat exchange with cooling media requires temperature difference of heat transfer, which used to be 5℃, therefore, the lowest temperature of cooling media is -90℃. Meanwhile, the temperature difference of heat exchange between Cooling Media and Solvent inside the customers’ working vessel is 5℃, thus theoretically all the operation temperature above -85℃ is available for Cryogenic Chiller. What’s more, comparing with Liquid Nitrogen, the boiling point of cooling media is much higher (usually above +40℃), so only if the temperature of Solvent is lower than the boiling point of cooling media, there will not be phase change during heat exchange and will keep high efficiency. Cooling media system can provide cooling source for Working Vessels with different operation temperature. Especially for those with higher reaction temperature, according to Q=K·A·Δt, when K (heat transfer parameter) and A (heat transfer area) are certain, Δt (temperature difference of heat transfer) is in direct proportion with Q (quantity of heat exchange), that is, realize big amount heat exchange within limit heat exchange area.
Q: If the refrigeration capacity of Cryogenic Chiller is more than the refrigeration capacity which is needed for cooling down the materials, is it satisfied and enough for usage?
A: Not always. Firstly, the entire system including cooling media circulating pump, storage Vessel, pipes and valves all belong to heat headstream. The system still exists heat-consuming even though with the heat insulation. We need to consider the above two parts based on the load of the Cryogenic Chiller. Otherwise, the refrigeration capacity which is finally passed to the materials cannot meet the requirements. Additionally, even though the refrigeration capacity that Cryogenic Chiller outputs meets the requirements, since the available heat exchange area is not enough inside the customer’s working vessel, still cannot reach the requirement of heat exchange so that finally it does not meet the customers’ request either.
Q: Cryogenic Chiller & Liquid Nitrogen
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Cryogenic Chiller |
Liquid Nitrogen |
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Advantages |
n Independent refrigeration
n No wastage
n Low operation cost
n One-key operation |
n low absolute temperature
n Simple system installation
n Low invests for the first time |
|
Disadvantages |
n High invests for the first time
n Necessary daily operation and maintenance |
n High operation cost
n high dependency on supplies
n Safety trouble of storage
equipment |
Q: The temperature of Cryogenic Chiller is higher than Liquid Nitrogen, therefore, its effect is not as good as the latter?
A: Liquid Nitrogen absorb heat by using vaporization latent heat (Liquid Nitrogen changes into gaseous nitrogen after absorbing heat), therefore during the process of absorbing heat, there will be strong vaporization (especially at beginning of the cooling down process, when the difference in temperature is big). This phenomenon will make the liquid nitrogen inside coils change into both gas and liquid phase, thus the liquid nitrogen will not completely contact with heat-exchange coils and the efficiency of heat exchange is quite low. Cryogenic Chiller provides cooling source through Cooling Media system. During the refrigeration release, Cooling Media keeps to be liquid, which make best of heat exchange area of coils. Therefore, the efficiency is high and the process of refrigeration release is steady.
Q: What benefit can Cryogenic Chiller bring?
A: Comparing with the conventional Liquid Nitrogen temperature cooling down process, Cryogenic Chiller can lower the operation cost, improve the product quality and quantity. (The income of many customers can reach several ten thousands RMB per day). According to different cooling down process, character and output of products, the customer income varies. The technician can make economic analysis report based on customers’ real situation, so that the customer will have a more direct understanding of the advantages of Cryogenic Chiller.
Range of application
Pharmacy: technology needs temperature control like synthesization, hydrolyzation, esterification, etherization.
Industry: metal heat treatment
Chemical industry: rubber mashing
Food: cryogenic refrigeration system for tuna boat and food storage presertation
War industry: weaponry storage
Electronics: spare parts environment test
Aeronautics and space: spare parts environment test
Within proper temperature range, cryogenic chiller can totally substitute for liquid nitrogen |
