WIND-SOLAR-HYDRO
For captive consumption applications, combination of Wind Turbines, Solar Photovoltaic and Hydro Turbines is highly recommended considering these technologies complement each other to provide Uninterruptible Power Supply without Grid Connectivity.
Wind Turbines deliver highest output during monsoon, average during summer and lowest during winter. In contrast, Solar PV delivers highest output during summer, average during winter and lowest during monsoon. Hydro Turbines deliver 24 X 7 Power from July to Dec.
Ideally, Wind Turbines must be 30-40% and balance Solar PV in a hybrid design solution. This will ensure 24x7 uninterrupted power to the load irrespective of seasonal variations. The product mix may differ for each location and shall be assessed separately for each project based on Energy Consumption Pattern.
We can design and deliver Hybrid Power Solutions from for captive consumption applications in off-grid and on-grid configurations.
SOLAR
PHOTOVOLTAIC SYSTEMS
Solar Photovoltaic Systems are designed and implemented based on site feasibility and average power consumption pattern. Available in off-grid and on-grid configurations.
For off-grid applications, we recommend maintenance-free GEL batteries upto 10KW capacity if the sites are remote and frequent maintenance is troublesome. These batteries are completely sealed and offer 8-10 years service life. Space required to install 1KW Solar PV System is 10sqm. Hence 100KW Solar PV System would require 1000sqm for installation of Solar Modules and Assembly. Each KW of Solar PV System is expected to generate 4KWH/ day as per industry standards. Life of the Solar Photovoltaic System is 20-25 years including Inverters and is 100% maintenance-free.
ON-Grid Systems are useful for applications requiring continuous power during working hours thus avoiding batteries. Factories, Educational Institutions and Offices are best examples to install ON-GRID Systems where most of the power generated by Solar PV Plant is being consumed by the load. OFF-GRID Systems are useful for applications
where the load power consumption is cyclic and erratic in nature thus requiring batteries for energy storage. Residences, Retail Outlets and Offshore Platforms are classic examples of erratic power consumption pattern which can be addressed by OFF-GRID Systems where
Grid Supply is unreliable.
HORIZONTAL AXIS
WIND TURBINES
Horizontal Axis Wind Turbines are suited for rooftop installations upto 2KW and ground installations from 3KW to 20KW capacities. Rugged in construction with best in class performance, they are not recommended in the congested urban settings due to large swept area of the turbines. They can be installed in the countryside, rural areas,
smaller towns with open spaces and isolated regions with or without grid connectivity. Most of these turbines are already operational worldwide and in India and have been performing for more than 6 years now in on-grid and off-grid configurations. Probably, one of the few turbines which produces 130% of rated power at 13m/s Wind Speed.
Maintenance Schedule
Greasing once a year
Replacement of ball bearings once in 5 years
Replacement of blades in 10 years
VERTICAL AXIS
WIND TURBINES
Vertical Axis Wind Turbines (VAWTs) available from 1KW to 10KW are best suited for integration into the tall building structures and on rooftops. These turbines deliver best performance in high turbulent conditions and varying wind directions specially on the top of tall buildings and offshore platforms. Other turbine technologies perform poorly in such conditions. It is observed that VAWTs produce 40% more energy than horizontal axis wind turbines on an yearly basis. We do not recommend installation of VAWTs on the ground since they do not offer any distinct advantage in such applications.
Maintenance Schedule
Greasing once a year
Replacement of ball bearings once in 5 years
Replacement of blades in 10 years
MICRO HYDRO
TURBINES
Micro Hydro Turbines available from 1KW to 30KW are useful in generating power in two different applications. Can generate power in hilly areas where water flows from a natural head. This is a traditional practice followed worldwide for more than a century now. We have a attached a ready reckoner chart to select the right hydro turbine for the available head and flow rate.
Hydro turbines can also be installed at Cooling Towers in Industries where natural flow of water from >15m height can be harnessed to generate power. Note that hydro turbines generate power at 60-65% efficiency compared to 15-20% for Wind Turbines and Solar PV Systems. Hence this is useful energy which can be consumed by lighting or any
critical loads nearby.
| Selection of Micro Hydro Electric Generators | |
| Hydro-electric generator capacity |
Suitable Parameters |
|
200 watt 3-4 ltr |
200 watt Water head 10-14 mtr Flow 3-4 ltrs / sec. Inlet pipe 50 mm |
| 300 Watt 3-5 ltr | 300 watt Water head 12-14 mtr Flow 3-5 ltrs / sec. Inlet pipe 50 mm |
| 500 watt 5-7 ltr | 500 watt Water head 12-18 mtr Flow 5-7 ltrs / sec. Inlet pipe 50-75 mm |
| 750 watt 5-8 ltr | 750 watt Water head 14-18 mtr Flow 5-8 ltrs / sec. Inlet pipe 75 mm |
| 1100 watt 8-10 ltr | 1100 watt Water head 16-22 mtr Flow 8-10 ltrs / sec. Inlet pipe 100 mm |
| 1100 watt 10-15 ltr | 1100 watt Water head 15- mtr Flow 10-15 ltrs / sec. Inlet pipe 125-100 mm |
| 1500 watt 8-11 ltr | 1500 watt Water head 18-25 mtr Flow 8-10ltrs / sec. Inlet pipe 125 mm |
| 1500 watt 10-15 ltr | 1500 watt Water head 15 mtr Flow 12 -18 ltrs / sec. Inlet pipe 125-150 mm |
| 3000 watt 15-19 ltr | 3000 watt Water head 25-35 mtr Flow 15-19 ltrs / sec. Inlet pipe 125-150 mm |
| 3000 watt18-30 ltr | 3000 watt Water head 18-20 mtr Flow 18-30 ltrs / sec. Inlet pipe 150 mm |
| 6000 watt 30-38 ltr | 6000 watt Water head 28-35 mtr Flow 30-38ltrs / sec. Inlet pipe 150 mm |
| 6000 watt 38-50 ltr | 6000 watt Water head 18-20 mtr Flow 38-50ltrs / sec. Inlet pipe 200 mm |
| 10KW/3 ph 40-50 ltr | 10000 watt Water head 30-38 mtr Flow 40-50 ltrs / sec. Inlet pipe 200 -250mm |
| 10KW/3 ph 50-60 ltr | 10000 watt Water head 25 - 30 mtr Flow 50-60ltrs / sec. Inlet pipe 200-250 mm |
| 12KW 3 ph 50-60 ltr | 12000 watt Water head 28-35 mtr Flow 50-60 ltrs / sec. Inlet pipe 200-250 mm |
| 15KW 3 ph 60-70 ltr | 15000 watt Water head 30-40 mtr Flow 60-70ltrs / sec. Inlet pipe 200 mm |
| 20KW 2 ph 60-80 ltr | 20000 watt Water head 30-45 mtr Flow 60-80 ltrs / sec. Inlet pipe 250 -300mm |
| 30KW 3 ph 90-120 ltr | 30000 watt Water head 38-45 mtr Flow 90-120 ltrs / sec. Inlet pipe 250-300 mm |
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