Hermetic scroll compressor air-cooled water chiller unit

1.Hermetic scroll compressor 2.Dry-type shell and tube heat exchanger 3.Chilled water temperatue control

Features of unit

1.application of economizer

 Increase the supercooling degree of liquid refrigerant and improve unit refrigerating capacity

2.reliable functional components

 Adopting newly high efficiency heat exchange tube to make dry expansion evaporator and condenser with high heat transfer efficiency, so it can improve refrigerating capacity of the unit and reduce input power;

 Solenoid valves, oil separators, electric components etc are all world famous brand with high quality and long service life.

3.application of environmental friendly refrigerant

Various refrigerant can be used, like HFC404A, HFC134a and so on.

4.various secondary refrigerant can be used

 Glycol water solution, propanediol water solution, ethanol etc, or design the evaporator as an anti-corrosive one, so that Calcium chloride water solution can be used;

5.application of high efficiency oil separator

Reduce lubricant which flow in evaporator, so it can improve the heat transfer efficiency of evaporator.

6.application of injection technology

 Injecting liquid refrigerant to the compression chamber of a compressor can reduce discharge temperature efficiently.

Hermetic scroll compressors are adopted, and the main features of the compressors are listed as follows

1.A dual flexible design: to ensure that the seal between the scroll plate;

2.High energy efficiency ratio: the scroll involutes wear in rather than wear out;

3.Lower noise and vibration levels of the sound spectrum, and the soft smooth sound quality;

4.Efficient Teflon bearing;

model			LSQF 6.5EZ	LSQF 7.5EZ	LSQF 9.0EZ	LSQF 11EZ	LSQF 13EZ	LSQF 16EZ
Nominal refrigerating capacity		kW	6.5	7.5	9.1	11.3	13.2	16.1
		Kcal/h ×104	0.6	0.65	0.8	1.1	1.4	1.7
		RT	1.9	2.1	2.6	3.3	3.8	4.6
Power supply			Three phase and Four wire circuit system 380V 50Hz
Nominal input power		kW×number of compressor	4.7	5.4	7.5	7.9	9.2	11.3
compressor	type		Hermetic scroll compressor
	Start-up mode		Direct start
	quantity		1
Airside heat exchanger			Fin heat exchanger
fan	type		Low noise propeller axial-flow fan
	Wind quantity	m³/h	5500	6500	8000	4500×2	5000×2	6000×2
	Rated power	kW×number of fan	0.25×1	0.37×1	0.55×1	0.25×1	0.37×1	0.55×1
evaporator	type		Dry-type shell and tube heat exchanger
	Water quantity	t/h	1.4	1.6	2.0	2.4	2.8	3.5
	pipe diameter		2-Rp1-1/2
	Water pressure drop	kpa	40-70
	Temperature control		Chilled water temperature control
refrigerant	name		R404A
	Control method		Thermal expansion valve
	Refrigerant charge	kg	2.4	2.8	3.4	4.2	5.0	6.0
lubricant	type		POE
Overall dimension	length	mm	1500	1500	1500	1700	1700	1700
	Width	mm	800	8000	800	800	800	800
	height	mm	1780	1780	1780	1780	1780	1780
Noise level		dB(A)	62	63	63	63	64	64
weight		kg	210	230	270	300	330	400

continued

model		LSQF20 EZ	LSQF23 EDZ	LSQF27 EDZ	LSQF32 EDZ	LSQF40 EDZ
Nominal refrigerating capacity	kW	19.5	22.6	26.4	32.2	39
	Kcal/h ×104	1.7	2.0	2.3	2.8	3.4
	RT	5.6	6.5	7.6	9.2	11.2

Hermetic scroll compressor air-cooled water chiller unit