Air Density Climate of Two Caribbean Tropical Islands and Relevance to Wind Power

Table 4

Estimated shape and scale parameters at hub height, capacity factor, energy output of turbine considered under standard air density conditions and under local site’s air density conditions, difference in energy output when the local site’s air density conditions are considered in comparison to energy output using standard air density, and lighting equivalent to this energy output difference at Piarco.

Month	𝑐 at 25 m level (ms^−1)	𝑘 at 25 m level	𝑐𝑝	𝐸25m,𝜌𝑙 (kWh)	𝐸25m,𝜌𝑠 (kWh)	𝐸25m,𝜌𝑙−𝐸25m,𝜌𝑠 (kWh)	Lighting equivalent to the difference 𝐸25m,𝜌𝑙−𝐸25m,𝜌𝑠 in terms of the number of 50 W light bulbs operating for 720 hours
January	4.44	1.54	0.21	4706.50	4480.30	−226.20	6 lights
February	4.81	1.59	0.24	5381.54	5120.80	−260.74	7 lights
March	4.94	1.63	0.25	5568.26	5284.65	−283.81	7 lights
April	5.12	1.76	0.26	5707.96	5394.30	−313.67	8 lights
May	5.04	1.75	0.25	5546.69	5231.15	−315.54	8 lights
June	4.77	1.70	0.23	5051.08	4773.04	−276.04	7 lights
July	4.12	1.57	0.18	3945.71	3732.11	−213.60	5 lights
August	3.59	1.53	0.13	2932.91	2770.69	−162.21	4 lights
September	3.61	1.60	0.12	2780.84	2623.14	−157.70	4 lights
October	3.63	1.59	0.13	2851.84	2689.69	−162.15	4 lights
November	3.70	1.57	0.14	3049.71	2880.73	−168.98	4 lights
December	4.07	1.53	0.18	3933.85	3732.14	−201.71	5 lights