Description:
Medium-sized low-temperature freezer, refrigeration temperature range from -5 ℃ ~ -150 ℃, safe, reliable, rapid cooling for the liquid, widely used in petrochemical, medical, pharmaceutical, biochemical and freeze-dried, military and other high-tech industries.
Application field:
Chemical, pharmaceutical, biochemical
industry and such low temperature reaction
FEATURES:
♦ Temperature ranges from - 5 ~ - 150 degrees, can meet different
temperature
♦ Adopt environmental protection refrigerants
♦ Famous brand semi-closed piston compressor, semi-closed bipolar
piston compressor, semi-hermetic screw compressor, main brand are
BOCK. Bitzer, Copeland, Hanbell, fusheng; Plate heat exchanger, Small
volume, High efficiency
♦ Top imported cold controller(DANFOSS pressure controller, balance
valve, expansion valve, solenoid valve, filter drier, Emerson oil separator,
ALCO liquid mirror, check valve, etc.)
♦ Generator cooling water circuit use intermediate heat exchanger,
improve system reliability and safety
♦ DANFOSS electronic expansion valve, high precision control;
♦ Adopt Siemens PLC S7-200/300, LNEYA touch screen, automatic control,
temperature curve display, temperature record U disk, fault alarm;
♦ Large cooling capacity adopts semi-hermetic screw compressor,
electronic expansion valve control, high efficiency and energy saving;
♦ Offer machine installation and system test, users only need to finish
the installation of refrigerant and cooling water;
♦ Factory testing: each refrigerating unit is on load test of not less than
12 hours in the factory.
Structure design
A fully closed piping design, high efficiency plate heat exchanger used to reduce the
demand for the thermal fluid utilization while providing the system to achieve the rapid
ups and downs in temperature.
Display funcation
Displays various information on the touch screen.
Process Control Schematic diagram
High repetative of tempeature control effect
Each cycle curve slope is consistent and greatly improve the consistency of production thermostatically control environment.
Technical Parameters
Technical Parameters:
Product Name | Ultra-low Temperature Freezer | |||
Model | LD-4W | LD-6W | LD-8W | LD-12W |
Temperature Range ℃ | -80°C~ -30°C | |||
Cooling Capacity At -60°C | 6kW | 9kW | 12kW | 18kW |
5160Kcal/h | 7740Kcal/h | 10320Kcal/h | 15480Kcal/h | |
Cooling Capacity At -75°C | 4kW | 6kW | 8kW | 12kW |
3440Kcal/h | 5160Kcal/h | 6880Kcal/h | 10320Kcal/h | |
Circulation Pump | 6.6m³/h 2.5bar max | 6.6m³/h 2.5bar max | 9m³/h 2.5bar max | 15m³/h 2.5bar max |
Inlet & outlet connection size | DN-25 PN-10 | DN-25 PN-10 | DN-32 PN-10 | DN-32 PN-10 |
Water-cooled type W (cooling water at 30℃) | 10m³/h | 14m³/h | 20m³/h | 25m³/h |
Cold storage tank (optional) | 200L | 350L | 500L | 750L |
Expansion tank (standard) | 100L | 175L | 250L | 350L |
Compressor | Standard: Copeland | |||
Operation Panel | 7-inch color touch screen display, temperature curve record, data export to excel format. | |||
Control System | Standard: Single-chip microcomputer controller; Stepping control; Set temperature difference of refrigeration on & off. Optional: SIEMENS S7-200PLC & Module | |||
Closed | The whole system is a full closed circulation, there is no oil mist at high temperature and no water vapor at low temperature, pressure do not rise up when system is running. The system will supplement oil automatically at low temperature. | |||
Circulation pump | Standard: Direct type magnetic pump Optional: Increase the pipeline magnetic pump pressure in the pipeline | |||
Evaporator | Standard: Braze welding plate heat exchager (BPHE) Optional: Stainless steel tube heat exchanger | |||
Condenser | Shell and tube type water cooled condenser | |||
Intermediate heat exchanger | KAORI Plate heat exchanger | |||
Dry Filter | Emerson | |||
Drying filter core | Emerson | |||
Expansion tank | Emerson | |||
FDF | Emerson | |||
Oil separator | Emerson | |||
Pressure protector | Emerson | |||
Reservoir | Standard: RSP Optional: Emerson | |||
Sight glass | Standard: SANHUA Optional: Danfoss | |||
Refrigeration ball valve | Standard: SANHUA Optional: Danfoss | |||
Electric | Schneider AC contactor, Schneider intermediate relay | |||
Refrigerant | R404A | |||
Secondary refrigerant | Schneider AC contactor, Schneider intermediate relay | |||
Safety protection | High pressure protect; Water supply cut-off protection; Over-current protection; Leakage protection; Sequential and phase failure protection; High temperature protection; Sensor Failure protection; Liquid low level protection etc. muti-safety protection. | |||
Level Indicator | Adpot glass liquid level indication | |||
Piping material | SUS304 | |||
Expansion tank material | SUS304 | |||
Case material | Steel channel + Square tube + Cold-rolled blanking plate painting | |||
Product size | 205*145*175 | 205*145*175 | 205*145*175 | 235*145*175 |
Power | 380V 50HZ 14kW max | 380V 50HZ 18kW max | 380V 50HZ 30kW max | 380V 50HZ 43kW max |
HP | 15HP | 25HP | 35HP | 50HP |
dB | 75DB | Within80dB | ||
Weight | 950kg | 1100kg | 1400kg | 1800kg |
- 2006 Start production of refrigeration and heating system .
2008 The first generation of refrigeration and dynamic temperature control system.
2009 Developed the second generation of refrigeration and heating thermostat.
2010 Established WUXI GUANYA REFRIGERATION TECHNOLOGY CO., LTD.
2012 Single compressor having multiple circulation systems is applied SUNDI and LT series.
2014 Developed with large capacity of ultra-low temperature freezer
2016 low temperature freezer, plate freezer into the market