Comparison of Noise from Small Wind Turbines

Comparison of Noise from Small & Selected Medium-Size Wind Turbines
								ECN/Van der Borg		Difference
Turbine	Rotor	Swept	Rated	Tip Speed	Sound Power		Data	Projection @ 8 m/s		from
	Dia.	Area	Power	@ 8 m/s	@ 8 m/s	@ 10 m/s	Source	Low	High	High
	m	m2	kW	m/s	LWA, ref	LWA, ref		LWA	LWA	dBA
Ampair 100	0.91	0.66	0.1					64	71	8
Charging				24	na	na
Unloaded					80	86	Gipe
Air 403	1.17	1.07	0.4	80	88	91	Gipe	66	73	14
Whisper H40	2.13	3.58	0.9		85		NREL	72	79	6
BWC 850	2.44	4.67	0.85					74	81
Charging				37	82	87	Gipe			1
Unloaded				51	92	97	Gipe			11
Calorius	5	20	4.6	47	82		Risø	80	87	-5
Gaia	7	38	6.5	47	88		Risø	84	91	-3
Genvind	12.6	125	23.7	37	103		Risø	89	96	7
Kolibri	12.8	129	19.1	40	107		Risø	89	96	11
Furländer	13	133	30	33	93		TÜV	90	97	-4
Gaia	13	133	11.6	39	89		Risø	90	97	-8
Pitchwind	14	154	30		92		Pitchwind	90	97	-5
Enercon E30	30	707	200	25	95	99	Wind-consult	97	104	-9