Water Cooled Chiller Plant LD -80℃～-30℃

-80℃～-30℃

 Technical Parameters:

Medium-sized low-temperature freezer, the water cooled chiller plant has a temperature range from -80 ℃ ~ -30℃, safe, reliable, rapid cooling for the liquid, widely used in petrochemical, medical, pharmaceutical, biochemical and freeze-dried, military and other high-tech industries.

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Model	LD-4W	LD-6W	LD-8W	LD-12W	LD-20W	LD-30W	LD-40W	LD-60W	LD-90W	LD-120W	LD-180W
Temp. range	-80°C~ -30°C
Cooling capacity	6kw	9kw	12kw	18kw	30kw	45kw	60	90kw	135kw	180kw	270kw
At -60°C Kcal/h	5160	7740	10320	15480	25800	38700	51600	77400	116100	154800	232200
Cooling capacity	4kw	6kw	8kw	12kw	20kw	30kw	40kw	60kw	90kw	120kw	180kw
At -75°C Kcal/h	3440	5160	6880	10320	17200	25800	34400	51600	77400	103200	154800
Circulation pump	6.6m³/h	6.6m³/h	9m³/h	15m³/h	25m³/h	25m³/h	25m³/h	35m³/h	35m³/h	50m³/h	65m³/h
	2.5bar	2.5bar	2.5bar	2.5bar	2.5bar	2.5bar	2.5bar	2.5bar	2.5bar	2.5bar	2.5bar
Connection size	DN-25 PN-10	DN-25 PN-10	DN-32 PN-10	DN-32 PN-10	DN-40 PN-10	DN-40 PN-10	DN-40 PN-10	DN-50 PN-10	DN-50 PN-10	DN-65 PN-10	DN-65 PN-10
Cooling water 30 DEG	10m³/h	14m³/h	20m³/h	25m³/h	35m³/h	45m³/h	65m³/h	90m³/h	120m³/h	180m³/h	250m³/h
Cool storage  tank (optional)	200L	350L	500L	750L	1000L	1200L	1500L	2200L	3000L	4000L	5000L
Expansion tank (optional)	100L	175L	250L	350L	500L	600L	750L	1000L	1350L	1800L	2200L
Compressor	Standard: Dorin semi-closed compressor				Standard: Hanbell screw compressor
					Optional: Bitzer screw compressor
Operation panel	7 inch color touch screen display input, temperature curve record.
Control system	Standard: single chip microcomputer controller, position setting to open refrigeration and close refrigeration temperature difference.
	Optional: Siemens S7 series PLC and module.
Circulation system	The whole system is fully closed system. The heat conduction medium does not absorb the water in the air and will be replenished automatically at low temperature. The system will not increase the pressure due to the high temperature in the operation.
Circulation pump	Wuxi guanya tube type centrifugal pump.
Evaporator	Standard: Brazing plate heat exchanger.
	Optional: stainless steel tube heat exchanger.
Condenser	Shell and tube type water cooled condenser.
Intermediate heat exchanger	Plate heat exchanger.
Drying filter	Emerson
Dry filter element	Emerson
Expansion valve	Emerson
Refrigeration solenoid valve	Emerson
Oil separator	Emerson
Pressure protector	Emerson
Sight glasses	Standard: Sanhua  Optional: Danfoss
Refrigeration ball valve	Schneider electric contact, schneider intermediate relay.
Electricity	R404A
Refrigerant	Standard: Sanhua  Optional: Danfoss
Secondaryrefrigerant	Ethanol, dichloromethane, heat conduction medium, etc.
Security and protection	High pressure protection, water break protection, current protection, leakage protection,  continuous and broken phase protection, high temperature protection, sensor fault alarm,  low level alarm and other multiple security protection.
Level indicator	Glass level indication.
Piping material	SUS304
Expansion tank volume	SUS304
Shell material	Channel steel + square pipe + cold rolled steel
Dimension cm	205*145 *175	205*145 *175	205*145 *175	235*145 *175	235*145 *175	350*150 *205	350*150 *205	400*180 *205	450*200 *205	450*200 *205	650*220 *235
Power supply (max)	380V 50HZ	380V 50HZ	380V 50HZ	380V 50HZ	380V 50HZ	380V 50HZ	380V 50HZ	380V 50HZ	380V 50HZ	380V 50HZ	380V 50HZ
	14kw	18kw	30kw	43kw	69kw	101kw	101kw	200kw	295kw	396kw	588kw
Noise	Within 75db		Within 80db			Within 90db
Weight	950kg	1100kg	1400kg	1800kg	2200kg	3000kg	3500kg	4000kg	5000kg	6000kg	8000kg

Maintenance for Lubrication System of Water Cooled Chiller Plant
When the chiller is below 80 ℃ ~ 30 ℃ below zero in the running system, people pay more attention to refrigerator, frozen water cycle system and electric control system, so the lubrication system is often overlooked. However, this system is also very important to the chiller. The maintenance of the chiller is indispensable, now we are going to tell you something about it.

1. Observe the normal oil surface, oil temperature and oil pressure in the daily inspection.

2. Regularly check the oil quality according to the oil change index stipulated in the frozen lubricating oil, and replace or supplement the filtered new oil.

3. Pay attention to check and adjust the end face clearance of the oil pump in the middle and overhaul, and replace the pump when necessary. The end face clearance of the pump varies from 0.03 to 0.08mm. Please refer to the assembly technical requirements and factory regulations of the pump for concrete value.

4. Regularly replace or clean the filter core, pipeline, and crankcase.

The maintenance of the lubrication system of the chiller requires techniques, which mainly involves the performance of the compressor's main engine. It is recommended to be operated by professionals to avoid unnecessary losses.


Contact Lneya for more.