The First Anemometer readings - wind speed measurement on Farm.

Now the Anemometer is working fine. Subbu discovered a small switch that had disengaged the meter. Now it is working fine after it was pushed back. Subbu and team  made an easy ladder path to climb up the tripod pole made out of Casurina poles connected with wooden steps and plank, at a height of 19 feet and says he enjoys staying over there.  Cool. 

The below are the anemometer readings that have been received from him.  The anemometer has counter measuring in xxxxx.yy where x is in kilometer and y in meters. He said he was waiting or y counter to come to zero before noting down. Then I corrected him and asked him to give two digit decimals also as it is without waiting unnecessarily.  Otherise they will become nervous. First three columns are inputs. Balance are calculated by me over excel sheet. 

 The first Anemometer readings.

Date	Time	meter Reading	Time interval in Hours	Incremental Distance Kms	Speed (KM)/ Hour	Speed Meters per Sec
01-01-2014	06:00	0	0.0	0.00
01-01-2014	17:00	343	11.0	343.00	31	9	day
01-01-2014	18:10	361	1.2	18.00	15	4	day
02-01-2014	11:00	625	16.8	264.00	16	4	night
03-01-2014	09:00	745.6	22.0	120.60	5	2	day/night
03-01-2014	11:00	793.5	2.0	47.90	24	7	day

I am not sure if I have done the calculations correctly. But common sense is saying it is reasonable. As per this measurement I am getting a wind speed comfortably above average.  3 Meters/sec is considered slow and 4 Meters/Sec is considered medium speed.  Surprisingly the internet is not having any information regarding the actual field measurements made in our part of country (or for that matter anywhere else) inspite of the fact that there is so much of hue and cry about wind energy and crores are being invested in.

The good news is that these speeds are at 19 feet height / 6 meters.  The actual windpump rotor if purchased will be at 15 meters height.

Another finding is that speeds at day time is high and night speeds are bit low. I cannot conclude anything now, but need to watch for atleast next 30 days before taking a big decision - wheather to buy a windmill or not..

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