Name: China RD Series Refrigeration Air Dryer Manufacturers, Suppliers and Factory - RISHENG
Brand: RISHENG
SKU: 305402863

Description

Technical Parameters

Industrial Compressed Air Treatment
A Key Step Towards Efficiency and Reliability

Nowadays compressed air serves as a core power source for countless processes. However, air directly from compressors often contains moisture, oil, and particulate contaminants. If left untreated, these impurities can cause equipment corrosion, product defects, and production downtime, directly threatening efficiency and product quality. Thus, air filtration and drying are not optional but fundamental to ensuring system stability.
Providing clean, dry, compressed air is especially important in applications where moisture condenses in pipelines, leading to rust and microbial growth, and where particles abrade precision tools, increasing maintenance costs. With efficient drying systems, businesses can extend equipment lifespan, meet stringent international standards (e.g., ISO 8573-1), and pave the way for sustainable development.

product-1-1

Transforming Air Humidity into a Business Advantage

Energy Savings & Cost Reduction

Refrigerated dryers achieve a stable Pressure Dew

Point (PDP) (e.g., +3°C) through efficient refrigeration cycles and heat exchange technology. Their exceptional energy-efficient design translates directly into lower operating costs.

Energy Savings & Cost Reduction

Ensuring Superior Quality & Environmental Responsibility

Air quality directly impacts the quality of the final product. Whether the air contacts the product

directly (e.g., in food and pharmaceutical packaging) or serves as a control force, dry and clean air is the cornerstone of high-quality manufacturing.

Enhanced System Reliability & Production Efficiency

Choosing a high-quality refrigerated dryer is a critical investment in production continuity. They can guaranteed smooth production, extended equipment lifespan, simplified installation & maintenance.

How does a Refrigeration Dryer work?

A refrigerated air dryer operates on the principles of thermodynamics and heat exchange to remove moisture from compressed air. Its workflow can be broken down into two main, interconnected circuits:
the Air Circuit and the Refrigerant Circuit.

Air Circuit

1. Pre-cooler: The air-to-air heat exchanger is a pre-cooler. It pre-cools the hot, saturated, incoming air by transferring heat to cold air that is returning from the water separator.

2. Evaporator: Air is cooled down to the required dew point by transferring heat to theevaporating refrigerant.

3. Water Separator: The droplet separation occurs in a stainless steel wire mesh removing any remaining droplets suspended in the air flow.

Refrigerant Circuit

4. Compression: The compressor increases the pressure and temperature of the refrigerant, turning it into a hot, high-pressure gas
5. Condensation: Superheated gas flows into the condenser (which can be air-cooled by a fan or water-cooled). Here, the refrigerant releases
its heat to the surrounding environment (air or water) and condenses into a high-pressure liquid.
6. Expansion: The high-pressure liquid refrigerant passes through an
expansion valve (or capillary tube). This device creates a pressure drop, causing the refrigerant to rapidly cool and partially evaporate as it enters the evaporator as a low-pressure, cold liquid-gas mixture.
7. Evaporation: Cold refrigerant absorbs heat from the warm compressed air flowing on the other side and returns to the compressor to start the process again.

product-551-312

Packed 3-in-1 heat exchanger

• Larger air channels result in lower air pressure drop.

• An oversized demister separator ensures optimumcondensate separation and maintenance-free operation.

• All material in aluminum and rust free .

Zero air loss drainer

• Ensuring no air exhaust to outside and significant reductions in power consumption.

• Drainer positioned in a niche, allowing easy access without the need to remove the top panel.

Evaporating pressure regulating valve

• Features a high-capacity valve, enabling fully adjustable operation load from 0% to 100%, maintaining stable dew point performance .

• Supported by over 20 years of proven field operation. All dryers have been adjusted in the factory, and there is no need for on-site adjustment.

Compact Enclosure

• Simple disassembly, with easy access to the internal components for efficient maintenance .

Hot gas by-pass valve

• Features a high-capacity valve, enabling fully adjustable operation load from 0% to 100%, maintaining stable dew point performance .

• Supported by over 20 years of proven field operation. All dryers have been adjusted in the factory, and there is no need for on-site adjustment.

Capillary

• In refrigeration systems equipped with multiple energy regulation devices, instability and self-interference often occur. The capillary, however, provides stable flow control and, when used in combination with a hot gas by-pass valve, can precisely adapt to load variations while stabilizing the dew point.

Micro-controller

• The multifunctional display gives a digital dewpoint reading and indicates coded alarms .

• Standard volt-free contacts and an optional RS485 serial card allow remote monitoring and support if needed.

product-160-258

Scroll compressor

• Compliant scroll compressors offering energy savings of up to 20% compared to other systems . Totally resistant to liquid

refrigerant returns and with 50% fewer moving parts than other models, these compressors are extremely reliable and almost indestructible. Low vibration levels also serve to prolong their refrigeration circuit life .

Modular design

• Flexible combination of several heat exchangers

• Benefits from a universal design that integrates air-cooled and water-cooled systems within a unified basis. This significantly accelerates product delivery.

Electronic Drainer

• Fan individual electronic drain valve is installed at the bottom of each heat exchanger to ensure reliable condensate discharge and maintain stable equipment dew point.

• All drainage points are consolidated along the equipment periphery for convenient on-site piping connection and operation.

Reliable system

product-738-850

All these protection measures are aimed at ensuring that the compressor can operate under a safe and stable working condition.

Technical Specification

DRYER TYPE	Inlet flow			Inlet / outlet connections	Dimensions						Power	Power Supply V / Ph / Hz	Weight
	Inlet flow				mm			inch			Power		Weight
	m³/min	l/s	cfm		mm			inch			kW		kg	lbs
	m³/min	l/s	cfm		L	W	H	L	W	H	kW		kg	lbs
Air-cooled
RD-06A	0.6	10	22	G 3/4" FM	410	498	477	17	20	19	0.348	220/1/50	25	55
RD-09A	0.9	15	32	G 3/4" FM	410	498	477	17	20	19	0.348	220/1/50	25	55
RD-12A	1.2	20	43	G 3/4" FM	410	498	477	17	20	19	0.479	220/1/50	30	66
RD-15A	1.5	25	53	G 3/4" FM	410	498	477	17	20	19	0.479	220/1/50	30	66
RD-18A	1.8	30	64	G 3/4" FM	410	498	477	17	20	19	0.479	220/1/50	30	66
RD-24A	2.4	40	85	G 1-1/2" FM	461	498	537	19	20	22	0.798	220/1/50	50	110
RD-30A	3	50	106	G 1-1/2" FM	461	498	537	19	20	22	0.798	220/1/50	50	110
RD-36A	3.6	60	128	G 1-1/2" FM	461	498	537	19	20	22	0.798	220/1/50	55	121
RD-40A	4	67	142	G 1-1/2" FM	461	498	537	19	20	22	0.798	220/1/50	55	121
RD-60A	6.5	109	230	Rc 1-1/2"	760	595	907	30	24	36	2.20	220/1/50	78	172
RD-80A	8.8	147	311	Rc 1-1/2"	760	595	907	30	24	36	2.20	220/1/50	80	176
RD-100A	11	184	389	Rc 1-1/2"	760	595	907	30	24	36	2.20	220/1/50	85	187
RD-120A	13	217	460	Rc 2"	1008	752	1030	40	30	41	4.00	220/1/50	130	287
RD-150A	17	284	601	Rc 2"	1008	752	1030	40	30	41	4.00	220/1/50	140	309
RD-200A	23	384	813	Rc 2"	1008	752	1030	40	30	41	4.55	400/3/50	150	331
RD-250A	27	450	954	Rc 3"	818	1153	1612	33	46	64	5.35	400/3/50	250	551
RD-300A	33	550	1166	Rc 3"	818	1153	1612	33	46	64	6.80	400/3/50	260	573
RD-350A	37	617	1307	Rc 3"	818	1153	1612	33	46	64	7.95	400/3/50	270	595
RD-400A	45	750	1589	DN100	1430	1058	1710	57	42	68	8.94	400/3/50	500	1102
RD-500A	55	917	1943	DN100	1430	1058	1710	57	42	68	10.59	400/3/50	510	1124
RD-600A	65	1084	2296	DN100	1430	1058	1710	57	42	68	12.69	400/3/50	550	1213
RD-700A	73	1217	2578	DN125	1430	1058	1710	57	42	68	12.69	400/3/50	580	1279
RD-800A	80	1334	2825	DN150	1465	2046	1710	58	81	68	16.23	400/3/50	700	1543
RD-900A	90	1500	3178	DN150	1465	2046	1710	58	81	68	16.23	400/3/50	720	1587
RD-1000A	100	1667	3531	DN150	1465	2046	1710	58	81	68	20.32	400/3/50	940	2072
RD-1200A	120	2000	4238	DN150	1465	2046	1710	58	81	68	20.32	400/3/50	950	2094
RD-1500A	150	2500	5297	DN200	1466	2588	1846	58	102	73	27.25	400/3/50	1150	2535
RD-1800A	180	3000	6356	DN200	1466	2588	1846	58	102	73	32.64	400/3/50	1350	2976

Water-cooled
RD-120W	13	217	460	Rc 2"	1004	809	1030	40	32	41	3.75	220/1/50	130	287
RD-150W	17	284	601	Rc 2"	1004	809	1030	40	32	41	3.75	220/1/50	140	309
RD-200W	23	384	813	Rc 2"	1004	809	1030	40	32	41	4.30	400/3/50	150	331
RD-250W	27	450	954	Rc 3"	822	1082	1612	33	43	64	4.85	400/3/50	250	551
RD-300W	33	550	1166	Rc 3"	822	1082	1612	33	43	64	6.30	400/3/50	260	573
RD-350W	37	617	1307	Rc 3"	822	1082	1612	33	43	64	6.30	400/3/50	270	595
RD-400W	45	750	1589	DN100	1346	1059	1710	53	42	68	8.11	400/3/50	500	1102
RD-500W	55	917	1943	DN100	1346	1059	1710	53	42	68	8.11	400/3/50	510	1124
RD-600W	65	1084	2296	DN100	1346	1059	1710	53	42	68	11.86	400/3/50	550	1213
RD-700W	73	1217	2578	DN125	1346	1059	1710	53	42	68	11.86	400/3/50	580	1279
RD-800W	80	1334	2825	DN150	1400	2046	1710	56	81	68	14.57	400/3/50	700	1543
RD-900W	90	1500	3178	DN150	1400	2046	1710	56	81	68	14.57	400/3/50	720	1587
RD-1000W	100	1667	3531	DN150	1400	2046	1710	56	81	68	18.66	400/3/50	940	2072
RD-1200W	120	2000	4238	DN150	1400	2046	1710	56	81	68	18.66	400/3/50	950	2094
RD-1500W	150	2500	5297	DN200	1408	2580	1846	56	102	73	25.60	400/3/50	1150	2535
RD-1800W	180	3000	6356	DN200	1408	2580	1846	56	102	73	30.98	400/3/50	1350	2976

Notes:

Data refers to the following conditions: air FAD 20°C /1 bar(a), air inlet pressure 7 bar(g), ambient temperature 38°C, air inlet temperature 38°C, water inlet temperature 32°C.

Water cooled dryer can be made in two types which are plate-fin condenser and shell-and-tube condenser, which depends on the water quality on site.

Reliable system

Features	Air-cooled						Water-cooled
Features	RD-06A to RD-40A	RD-60A to RD-100A	RD-120A to RD-200A	RD-250A to RD-350A	RD-400A to RD-700A	RD-800A to RD-1800A	RD-120W to RD-200W	RD-250W to RD-350W	RD-400W to RD-700W	RD-800W to RD-1800W
Moisture Indicator	√	√
Digital Dew Point	Optional	Optional	√	√	√	√	√	√	√	√
On/Off Switch	√	√	√	√	√	√	√	√	√	√
Terminal for Remote Alarm Signal	Optional	Optional	√	√	√	√	√	√	√	√
Running / Alarm indication		√	√	√	√	√	√	√	√	√
Remote ON/OFF Switch			√	√	√	√	√	√	√	√
Refrigerant High Pressure gauge			√	√	√	√	√	√	√	√
Refrigerant Low Pressure gauge				√	√	√		√	√	√
Air outlet Pressure gauge					√	√			√	√
High Pressure Switch		√	√	√	√	√	√	√	√	√
Low Pressure Switch			√	√	√	√	√	√	√	√
Fan Pressure Switch		√	√	√	√	√
History of Last 5 Alarms	Optional	Optional	√	√	√	√	√	√	√	√
RS485	Optional	Optional	Optional	Optional	Optional	Optional	Optional	Optional	Optional	Optional
Hot Gas By-pass Valve		√	√	√	√	√	√	√	√	√
Zero air loss Drain	√	Optional	Optional	Optional	Optional	Optional	Optional	Optional	Optional	Optional
Electronic Drain Valve		√	√	√	√	√	√	√	√	√
SIEMENS PLC and Touch Screen (7")			Optional	Optional	Optional	Optional	Optional	Optional	Optional	Optional

Notes:

1. If you have any other requirements, please consult us for more details.

Air flow correction factors for differing working conditions
Ka)	working pressure	barg	3	4	5	6	7	8	9	10	11	12	13	14	15
	correction factors		0.67	0.77	0.86	0.93	1	1.04	1.08	1.11	1.15	1.18	1.22	1.25	1.28
Kb)	air inlet temperature	°C	35		38		40		45		50		55		60
	correction factors		1.11		1		0.92		0.76		0.69		0.56		0.46
Kc)	ambient temperature	°C	25		30		35		38		40		45		50
	correction factors		1.15		1.1		1.02		1		0.89		0.79		0.69
Kd)	cooling water temperature	°C	20		25		32		35		40		45		50
	correction factors		1.17		1.09		1		0.92		0.84		0.79		0.69