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Submitted by Mamun on
Bangladesh is a developing country and most serious challenges we faces is power crisis. What ever we forecast for demand but our calculation failed because if you produce right now 7000 megawatt, it will fulfill with in a very short time because of many development and industries are waiting for power. If power is available, we will see many new projects, industries will consume immediately. In electricity, when we save power it means we produce power. If somebody save 100 watt, another user can use that power. Therefore energy efficiency is essential in every electric product. All the develop world even India also have energy efficiency authority to motivate and regulating energy efficiency policy. Now, let’s see in which sector we can reduce use of energy and some policy to motivate the people. 1. Major energy use in industrial sector and there are inductive and non inductive load. In our country, there are no major rules or not applied properly the rules for machine use. Like many industry using motor and sometimes those motor are not efficient at all and may be it will be recondition or old enough to be an efficient motor. Most of the inductive load do not have soft starter. Even in general use of water pump, there are no standard efficient level for selecting pump. Therefore people using 2500 tk water pump and that same 1 hp pump, in good branded one will be 7500 or higher. But people choose low price one which will destroy power and less efficient. Now what we can do about it? Must have regulation for import machine, motor not old enough 3 years if recondition. Motor or machine THD level, efficient must check. Soft starter should embed in every inductive device. 2. Regarding the Electric bike. It is very good for environment but as we cannot support the energy they need it is now harmful. First of all, that DC motor china made and worse efficient. Then using very low price batteries all together it is destroying good amount of power. Now if we calculate 250000 e bike, avg battery power (4 pc battery 100 amp to 165 amp) = 4800 watt to 7920 watt, to charge up that watt 250000 bike * 6300 avg; watt = 1575 megawatt. We cannot tell everyday they empty the battery therefore it might be half 787 megawatt day. As they put charge at night time, still it is huge amount of energy and it cause sometimes transformer burst. What we can do? Ban in import and catch up those bikes. Then we have to see the result otherwise give license to them and regulate that they must use 120 watt solar pv panel, energy star rated motor and high quality charger and batteries. But still it is problem for our energy crisis time. 3. Air condition: Now on days, we are used to use of these products. It is inductive load and consumed good amount of energy. Nobody cares to reduce the temp level or efficient products. Recently, at the same price, many manufacture offering 50% less power but same BTU because they are using DC motor. Therefore high tax, high electricity unit price where higher then 3-5 kilo residential load needed. But it may not be possible due to political and public emotion purpose. But still there are no substitutes to make energy expensive then people will careful to use of energy. 4. Lighting purpose: We came to new energy saving age and using cfl bulb or tube. It will save energy sure but it cause heavy damage in environmental. Every cfl contain mercury and emit UV. UV is harmful for our skin and mercury is highly radio active poison. When any bulb damage in our room, we have to keep vacant that room and open door, windows because of mercury vapor. After that we send it outside or sale. If it is goes to river, soil it will damage the water and its poison circle will start. It affect drinking water, fish and we take water or fish and cause cancer, unborn child defect, etc. Some tube light THD level also too high which decrease gird performance. What we can do? Use LED light. It is environmental friendly, long life (50000 Hrs where cfl is 3000 to 5000 hrs), very less energy consume even one third comparing cfl. As it is still expensive, we can use certified cfl and rules and regulation for recycling cfl. Another thing is still now; customs do not have HS code or tax structure for led light, bulb or tube. Led light must have duty/ tax free access. 5. BTS for mobile operator: Bangladesh has rapidly expanding mobile uses and according to that base transmission station also need. Now, 25000 over BTS running and more 7000 or more coming within 2 years. For mobile company, energy unit rate must have different category (high). Every BTS they use 2 pc 1 ton air conditioner which run round the clock. Now, if we calculate everyday 18 hrs air condition running this means 32.4 kilo only air condition. 32.4 times 25000 = 810000 kilo everyday 810 megawatt everyday. What is the solution: They have big investment and they can easily put solar / wind/ combined hybrid power generation system. If one BTS investment is near one core, they can easily put 5 to 10 % extra investment to do solar/wind/ hybrid power generation solution. 6. IPS: Most popular device in our urban area. Due to lack of electricity supply, these products become popular. But it is not efficiency products. As normal theory, when power convert, it cause some loss, main focus is minimizing the loss as much as possible. But our IPS, now making almost every technician in the every corner of the road. Therefore it design efficiency is very less. Then comes to parts, most of the parts are not standards because of cost minimizing. Transformer core, wire is very poor and it cause loss of current. If we calculate 20 % power waste in IPS, it is really significant amount where everyday we are using this product and use of this products also increasing. What can do? Firstly, IPS must have some certificate/ compliance rules. Additionally, certain amount of load can put in solar pv. This will benefit supply side and demand side both. Above all the circumstances, we find we must need energy efficient regularity authority and authority like energy star (who tested and give certificate for energy efficient products).