*Light-Emitting Diodes and Photodetectors - Advances and Future Directions*


#### **Table 7.** *Energy saving.*

### *3.4.1.3 Saving in maintenance cost*

**Table 8** indicates the maintenance cost saving [10] (in terms of light fixture) such as lamp, manpower, crane, etc. for 50 years' operation of the proposed automation lighting system and the conventional system.

*3.4.2.3 Total saving analysis*

\$1171.19/km/Year (Eq. (3)).

**3.5 Summary and conclusion**

*3.4.3 Discussion*

**Table 11.**

**41**

*Net saving analysis in 50 years.*

**Table 9.**

**Table 10.** *Saving in pollution.*

*Natural gas sales opportunity.*

**Table 11** summaries the calculations in direct and indirect savings. It is obvious

**S. No Description With Controller Without controller** 1 Annual Power consumption (kWh) 4498.63 32,850

**S. No Description With Controller Without Controller** 1 Annual Power Consumption (kWh) 4498.625 32,850 2 Power Consumption in 50 years (kWh) 224931.25 1,642,500

2 Reduction in Power Consumption (kWh) 28351.38 3 Annual Natural Gas Sale Opportunity \$1587.68 d **Natural Gas Sale Opportunity in 50 years \$79,383.85**

*Economic Applications for LED Lights in Industrial Sectors*

*DOI: http://dx.doi.org/10.5772/intechopen.95412*

3 Annual Saving in Pollution \$1694.2752 **e Saving in Pollution in 50 years \$84,713.76**

To sum up, huge amount of money can be saved if such technique is implemented. In case that this system is applied to only 100 km road, total annual saving becomes about \$117,119.24; total saving in 50 years becomes \$5,855,961.75. It means that such system saves huge amount of energy and hence expenditure saving that can be utilized in other projects' investment. From is discussion, it is also possible to calculates the "Saving Norm" for the proposed system to be

This Section provided automation design for the illumination system for low traffic roads in order to solve the problem of operating the road not only economically but also safely. Image recognition techniques was used based on identification

**a Initial Investment \$ 26,770.28 b Saving in Energy \$ 75,131.14 c Saving in Maintenance \$ 21,780.00 d Saving in Natural Gas \$ 79,383.85 e Saving in Pollution \$ 84,713.76 F Total Saving Cost \$234,238.47 f Total Saving in 50 years \$ 234,238.47**

that total saving for only 4 km road in 50 years is \$ 234,238.47.

## *3.4.2 Indirect benefits*

In indirect saving, two benefits of implementing the lighting system will be drawn into attention [10].
