Production of Wind Mill Energy From Exhaust of A/C Plant
- Nov 26, 2013 12:00 pm GMT
- 3323 views
I am working in a building which is centrally air conditioned. I got the idea of using the exhaust wind of Air conditioning plant to rotate the turbine for producing energy. If my idea of producing electricity from windmill which can be rotated by the exhaust of A/C plant comes true, then there will be an energy revolution in the areas where there is no wind mill due to lack of constant flow of wind. To date, the wind mill works in only coastal areas and not in places away from coastal regions.
The A/C plant works for at least 12 hours and that means the the wind mill can generate energy daily for twelve hours without need of natural wind. In off duty hours if there is natural wind, the wind mill can produce energy, but for at least twelve hours the exhaust air can rotate the wings of windmill and the air can be utilised for energy production which is otherwise going waste.
This is an idea to produce energy by using the exhaust air from Air conditioner in A/C buildings which is otherwise going waste. I just want to let the world know about the utility of Air from Exhaust of Air conditioner which is going waste. By my calculations we can produce energy equal to 12-15% of the total energy consumption in a building having an A/C plant . The cost of Wind mill turbines can be recovered in three years and after that the energy is produced free of cost . In this way we can produce energy in the places far off from coastal
areas where till date no wind mill energy is working due to lack of constant flow of wind.
By implementing this technique of horizontal wind turbine we can produce 26% cost of the energy of the investment which is needed to start this project and the production is totally green , there is no carbon emission, no smoke, no pollution and we are only using the wind that otherwise is going waste all over the world.
The wind turbine is not going to effect the efficiency of the A/C plant, rather it helps the A/C plant as can be seen from the lab experiments.
1. Benefits of the exhaust air energy recovery system
The energy recovery system is designed in a way that the released waste energy from any exhaust air system is converted to useable energy. As the wind from the exhaust air is readily available and concentrated every time the exhaust air system is operating, the energy generated from the system is predictable and constant in value. With constant rotational speed of turbine, over speed control is not required as only small rotational speed fluctuation is experienced. This feature can increase the longevity of the turbine due to less fatigue experienced. Besides, wind blown by the exhausts fan has a better quality compared to natural wind. Thus, the statistical analysis of wind characteristic over a period of time is not required before deployment of the turbine. In addition to that, selection of the wind turbine for the system would be simpler because the rated speed of the turbine is based on the exhausted wind and power output generated from the system is easily predictable.
2. TABLE 1: LABORATORY TEST RESULTS :
An exhaust air energy recovery system without resulting in negative impact is designed. The performance of the( Wind turbine-)WTs are efficiently boosted by integrating with an enclosure. Diffusers mounted at an optimum angle created venture effect and the exhausted air flow was improved. Besides, common safety mishaps such as blade failure problem are eliminated with the installation of the enclosure. It could act as a protective cover to protect the entire system. -Due to the simplicity of the design, this energy recovery system is retrofit-able to any existing exhaust air system with minimum visual impact.
From the laboratory test conducted, installed WT is able to generate electricity without pulling down the original performance of the cooling tower. Instead, the cooling towers performance was enhanced as air volume flow rate to the cooling tower is raised 8.6% higher. By integrating the WT with an enclosure to the design, the WTs performance is improved where the rotational speed is raised from 463.72 rpm to 500.98 rpm. On site testing was conducted to further confirm the actual performance and reliability of this system. It was observed that the released air speed from the cooling tower increased by 0.4% more compared to the conventional cooling tower. In terms of the motors power consumption, there was no significant difference observed for both test cases (7.0~7.1 kW). The implementation of this energy recovery system is possible to conserve power consumption from the cooling tower by up to 13%. By turning what was a wasted energy to useable energy like electricity, this energy recovery system has a high market potential and fast payback period as there are numerous usages of exhaust air system globally. It can be used as supplementary power for building lightings or fed into the electricity grid for energy demand in urban buildings.