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High Round Ceiling Diffuser

A consistently popular product, Round ceiling diff […]

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Product Details

A consistently popular product, Round ceiling diffusers are effective supply units, which suit modular ceiling systems perfectly.

Having undergone a recent redesign, JIANPIN Round Ceiling Diffusers are now lighter and shallower, but the well known design has stayed the same.

Application

Consistently popular diffuser style
Aluminum construction
Removable core for easy access to ducting or volume control damper

Description

· Round ceiling diffuser suitable for ceiling supply applications for cooling, heating and isothermal conditions. Airflow patterns and throws are altered simply by rotating the inner cones in or out. Suitable for fixed or modular ceiling systems. Capable of handling high airflow rates at moderately low pressure drops and noise.

Construction

From spun aluminum, providing long term strength and durability. The airflow passages are smooth ensuring quiet and efficient airflow. The centre cone can be wound up or down to adjust the airflow and throw pattern.

Suit

Round reducing neck ,radial damper,butterfly damper

Drawing

Performance Data

Data is based on Isothermal conditions with a room height of 2.7m with the diffuser mounted flush in an unobstructed ceiling. Throws are given at a terminal velocity of 0.25m/s. Noise Ratings are based on a room absorption level of 10db.

Selection Data

Product Code	Performance Data	Units	Neck Velocity (m/s)
			3	4	5	6	7	8
RD-C	Air Flow	l/s	53	71	89	106	124	142
φ150	Noise Criteria	NC	16	23	31	34	38	42
20%	Pressure Drop	Pa	10	18	27	40	54	70
Open	Vertical Throw	m	1.4	1.8	2.2	2.4	2.8	3.2
RD-C	Air Flow	l/s	53	71	89	106	124	142
φ150	Noise Criteria	NC	＜15	24	29	32	36	40
100%	Pressure Drop	Pa	7	13	20	29	39	51
Open	Horizontal Throw	m	0.8-1.7	1.1-2.0	1.4-2.3	1.6-2.6	1.9-2.9	2.2-3.2
RD-C	Air Flow	l/s	94	126	157	189	220	251
φ200	Noise Criteria	NC	21	26	33	37	42	46
20%	Pressure Drop	Pa	7	13	20	29	40	52
Open	Vertical Throw	m	1.7	2.2	2.6	3	3.4	3.8
RD-C	Air Flow	l/s	94	126	157	189	220	251
φ200	Noise Criteria	NC	18	24	30	35	38	42
100%	Pressure Drop	Pa	5	9	15	21	29	38
Open	Horizontal Throw	m	1.0-2.0	1.4-2.4	1.7-2.8	2.0-3.2	2.4-3.6	2.8-4.0
RD-C	Air Flow	l/s	147	196	246	295	344	393
φ250	Noise Criteria	NC	22	26	35	41	46	51
20%	Pressure Drop	Pa	15	26	41	59	80	105
Open	Vertical Throw	m	2	2.4	2.8	3.4	3.8	4.2
RD-C	Air Flow	l/s	147	196	246	295	344	393
φ250	Noise Criteria	NC	19	25	32	38	42	47
100%	Pressure Drop	Pa	8	14	22	32	44	58
Open	Horizontal Throw	m	1.2-2.3	1.7-3.0	2.2-3.6	2.6-4.1	3.0-4.5	3.5-5.1
RD-C	Air Flow	l/s	212	283	354	424	495	566
φ300	Noise Criteria	NC	24	31	38	45	53	59
20%	Pressure Drop	Pa	13	23	37	53	72	94
Open	Vertical Throw	m	2.4	2.9	3.4	4	4.6	5.2
RD-C	Air Flow	l/s	212	283	354	424	495	566
φ300	Noise Criteria	NC	22	27	35	42	49	54
100%	Pressure Drop	Pa	7	13	20	29	39	52
Open	Horizontal Throw	m	1.7-3.1	2.3-3.7	2.9-4.5	3.5-5.2	3.9-5.8	4.6-6.7
RD-C	Air Flow	l/s	289	385	481	577	673	770
φ350	Noise Criteria	NC	27	35	43	51	58	65
20%	Pressure Drop	Pa	7	12	19	28	38	49
Open	Vertical Throw	m	2.7	3.3	3.9	4.8	5.6	6.2
RD-C	Air Flow	l/s	289	385	481	577	673	770
φ350	Noise Criteria	NC	23	31	38	42	54	61
100%	Pressure Drop	Pa	4	7	10	15	20	27
Open	Horizontal Throw	m	2.1-3.7	2.8-4.7	3.5-5.5	4.2-6.3	4.8-7.2	5.5-8.1