Water Cooled Screw Chiller and Heat Pump, 200kW-2400kW

The water source and ground source heat pump is designed and produced by Ruidong for heating, cooling, and heat recovery in large commercial applications. These pumps are suitable for installation in malls, office buildings, workshops, hotels, hospitals and other large-scale structures.

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Water Cooled Screw Chiller

Screw Type High Temperature Hot Water Chiller

Screw Type Low Temperature Water Cooled Chiller

Screw Type Water Source Heat Pump

Technical Parameters R134a Screw type water cooled water chiller

Unit model- RLSG			200A	240A	260A	300A	330A	360A	400A	440A
Nominal cooling capacity		kW	204	236	256	295	329	364	389	441
Input power		kW	40	46	49.7	55.5	62.7	67.8	73.1	81.5
Running current		A	74.3	85.1	90.4	98.8	112.7	124.8	132.0	146.4
Max. running current		A	99.3	114.0	122.0	134.1	151.8	165.5	177.3	197.3
Cable diameter (copper wire distance ≤ 20 meters)		mm2	3*35 2*16	3*35 2*16	3*50*2*25	3*50 2*25	3*70 2*35	3*70 2*35	3*95 2*50	3*120 2*50
Power voltage			3-380V-50Hz
Starting mode			Y-▲
Refrigerant			R134a
Refrigerant charge			41	47	51	57	66	71	78 86
Refrigerant control device			Electronic expansion valve(EXV)
Compressor	Type		Semi-hermetic screw
	Qty		1
Evaporator	Type		Shell& tube type
	Water pressure drop	kPa	70-90
	Water pipe Dia.	DN	100	100	100	100	100	100	100	100
	Water flow	m3/h	35	41	44	51	57	63	67	76
Condenser type	Type		Shell& tube type
	Water pressure drop	kPa	70-90
	Water pipe Dia.	DN	100	100	100	100	100	100	100	100
	Water flow	m3/h	41	51	55	63	71	78	84	95
Noise level		dB(A)	79.6	80.4	81.5	83.1	84.2	85.2	86.3	86.9
Unit structure			Horizontal type
Dimensions（mm）		L	3000	3000	3000	3000	3000	3000	3000	3000
		W	1350	1350	1350	1350	1450	1450	1450	1450
		H	1600	1600	1650	1650	1650	1800	1800	1800
Installation dimensions（mm）		L1	2230	2230	2230	2230	2230	2230	2230	2230
		W1	790	790	790	790	880	880	880	880
Net weight		kg	1700	1800	1850	1950	1950	2100	2250	2450
Running weight		kg	2200	2400	2550	2750	2850	3100	3350	3750
Remarks	Cooling conditions	Chilled water inlet/outlet temperature 12℃/7℃; cooling water inlet/outlet temperature 30℃/35℃;

R134a Screw type water cooled water chiller

Unit model - RLSG			500A	580A	600A	700A	800A	900A	1000A
Nominal cooling capacity		kW	505	574	596	700	813	888	1020
Input power		kW	93.4	102.1	110.9	126.3	146.3	159.4	181.5
Running current		A	171.2	186.1	201.9	229.4	272.7	291,2	330.1
Max. running current		A	225.7	246.1	267.1	304	364	393.2	443
Cable diameter (copper wire distance ≤ 20 meters)		mm2	3*120 2*50	3*150 2*70	3*150 2*70	3*185 2*95	3*185 2*95	3*240 2*120	3*240 2*120
Power voltage			3-380V-50Hz
Starting mode			Y-▲
Refrigerant			R134a
Refrigerant charge			100	109	119	136	160	178	203
Refrigerant control device			Electronic expansion valve(EXV)
Compressor	Type		Semi-hermetic screw
	Qty		1
Evaporator	Type		Shell& tube type
	Water pressure drop	kPa	70-90
	Water pipe Dia.	DN	125	125	125	150	150	150	150
	Water flow	m3/h	87	99	103	120	140	153	175
Condenser type	Type		Shell& tube type
	Water pressure drop	kPa	70-90
	Water pipe Dia.	DN	125	125	125	150	150	150	150
	Water flow	m3/h	109	123	128	151	175	191	219
Noise level		dB(A)	87.1	87.3	87.6	88.4	90.1	90.5	90.8
Unit structure			Horizontal type
Dimensions（mm）		L	3400	3400	3500	3500	3500	3500	3500
		W	1450	1600	1600	1600	1600	1600	1600
		H	1800	1800	1850	1850	1850	1950	1950
Installation dimensions（mm）		L1	2735	2735	2735	2735	2735	2735	2735
		W1	880	1300	1300	1300	1300	1300	1300
Net weight		kg	2650	2850	3100	3300	3500	3700	4300
Running weight		kg	4050	4350	4450	4700	5000	5400	6000
Remarks	Cooling conditions	Chilled water inlet/outlet temperature 12℃/7℃; cooling water inlet/outlet temperature 30℃/35℃;

R134a Screw type water cooled water chiller

Unit model -RLSG			400A	480A	520A	600A	660A	720A	800A	880A
Nominal cooling capacity		kW	408	472	512	590	658	728	778	882
Input power		kW	80	92	99.4	111	125.4	135.6	146.2	163
Running current		A	148.6	170.2	180.8	197.6	225.4	249.6	264	292.8
Max. running current		A	198.6	228.0	244.0	268.2	303.6	331.0	354.6	394.6
Power voltage			3-380V-50Hz
Starting mode			Y-▲
Refrigerant			R134a
Refrigerant charge			82	94	102	114	132	142	156	173
Refrigerant control device			Electronic expansion valve(EXV)
Compressor	Type		Semi-hermetic screw
	Qty		2
Evaporator	Type		Shell & tube type
	Water pressure drop	kPa	70-90
	Water pipe Dia.	DN	100	125	125	125	150	150	150	150
	Water flow	m3/h	70	81	88	101	113	125	134	152
Condenser type	Type		Shell & tube type
	Water pressure drop	kPa	70-90
	Water pipe Dia.	DN	100	125	125	125	150	150	150	150
	Water flow	m3/h	88	101	110	127	141	157	167	190
Noise level		dB(A)	79.6	80.4	81.5	83.1	84.2	85.2	86.3	86.9
Unit structure			Horizontal type
Dimensions（mm）		L	3650	3750	4400	4400	4500	4500	4500	4500
		W	1500	1500	1500	1500	1700	1700	1700	1700
		H	1800	1900	1900	1900	2050	2050	2050	2050
Installation dimensions（mm）		L1	2735	2735	2735	2735	2735	3435	3435	3435
		W1	1140	1140	1140	1140	1350	1350	1350	1350
Net weight		kg	3100	3750	4000	4200	4400	4800	5000	5500
Running weight		kg	4350	5050	5400	5700	5900	6300	6700	7300
Remarks	Cooling conditions	Chilled water inlet/outlet temperature 12℃/7℃; cooling water inlet/outlet temperature 30℃/35℃;

R134a Screw type water cooled water chiller

Unit model -RLSG			1000A	1160A	1200A	1400A	1600A	1800A	2000A
Nominal cooling capacity		kW	1010	1148	1192	1400	1626	1776	2040
Input power		kW	186.8	204.2	221.8	252.6	292.6	318.8	363
Running current		A	342.4	372.2	403.8	458.8	545.4	582.4	660.2
Max. running current		A	451.4	492.2	534.2	608.0	728.0	786.4	886.0
Power voltage			3-380V-50Hz
Starting mode			Y-▲
Refrigerant			R134a
Refrigerant charge			200	218	238	273	319	355	406
Refrigerant control device			Electronic expansion valve(EXV)
Compressor	Type		Semi-hermetic screw
	Qty		2
Evaporator	Type		Shell & tube type
	Water pressure drop	kPa	70-90
	Water pipe Dia.	DN	150	150	200	200	200	200	250
	Water flow	m3/h	174	197	205	241	280	305	351
Condenser type	Type		Shell & tube type
	Water pressure drop	kPa	70-90
	Water pipe Dia.	DN	150	150	200	200	200	200	250
	Water flow	m3/h	217	247	256	301	350	382	439
Noise level		dB(A)	87.1	87.3	87.6	88.4	90.1	90.5	90.8
Unit structure			Horizontal type
Dimensions (mm)		L	4500	4750	4750	4750	4750	4750	4750
		W	1700	1900	1900	1900	1900	1900	1900
		H	2050	2000	2000	2000	2000	2000	2000
Installation dimensions (mm)		L1	3435	3435	3435	3435	3435	3435	3435
		W1	1350	1350	1350	1350	1350	1350	1350
Net weight		kg	5900	6200	6600	7000	7400	8000	8700
Running weight		kg	7600	7900	8400	8800	9200	9800	10700
Remarks	Cooling conditions	Chilled water inlet/outlet temperature 12℃/7℃; cooling water inlet/outlet temperature 30℃/35℃;

Protection measures
High and low voltage protection
Anti-freezing protection
Temperature control
Power anti-phase protection
High & low pressure protection
High pressure exhaust temperature protection
Built-in motor overheating protection

Over-current protection Safety valve
Check valve
Features
Compressor a. Semi-closed dual screw design. Compressed parts are composed of two intermeshing rotors, designed to minimize vibration. The screw design leads to high efficiency and smooth air flow through the process of intake, compression and exhaust.
b. The equipment does not need to be manually lubricated.
c. The compressor's volume control system can easily perform partial load operation. The compressor can achieve 25%-100% sectional adjustment or non-sectional energy adjustment to be fully compatible with building loads.
Advantages
Moving components are only 1/4 of that of piston compressors. Vulnerable parts are minimized and the inhale and exhaust processes are smooth and continuous without pulse phenomenon. The equipment is not sensitive to wet compression and is highly resistant to strong liquid impact.
Shell and tube type heat exchanger Shell: pressure vessels are constructed form high-quality steel plate. Its manufacture and testing meets JB/T4750-2003 ‘Pressure Vessel for Refrigeration Equipment' standards. Exterior surface features flame-retardant water-proof heat-insulation and preservation materials. The evaporator baffle plate adopts PVC engineering plastic which has excellent corrosion resistance and good air impermeability to make the cooling water flow upwards and downwards along the baffle plate. This improves the heat exchange capacity of the evaporator.
The refrigerant inlet is equipped with a flow-equalizing device in order to uniformly distribute the refrigerant in the heat exchanger's copper tube. This improves the heat exchange efficiency of the whole unit.
The DAC corrugated inner grooved heat exchange tube is made from copper, improving its efficiency. The power side heat exchange capacity for refrigerant improves the cooling and heating effects of the unit.
Expansion valve The electronic expansion valve control system can reach a control accuracy up to 2600 steps. According to suction superheating and saturation pressure, combined with the electronic control system, we can precisely control the refrigerant flow, so as to ensure the unit is always in best running condition and the maximum capacity can be achieved. The adoption of highly efficient heat exchange tubes improves energy efficiency and effectiveness.

Distribution control cabinet The distribution control cabinet is composed of compressor starting equipment, a power protector and a micro-computerized controller. The micro-computerized controller can run stably and safely under a temperature range of -15℃ to 65℃. It is equipped with a RS-232 and RS-485 standard communication interface. It can receive a remote signal for starting up and shutting down.
Safety equipment High and low voltage switch, anti-freezing temperature control, lube oil heater, high-pressure exhaust check valve, replaceable filter element dry filter, piezometer, emergency stop switch, overload protector, power protector, refrigerant injector.