Physics Project

Current situation on energy conservation at JLP 

A possible alternative energy could be solar energy. Solar energy is energy converted from sunlight, this energy could be used for electricity. Cleantech Park has done quite a number of things to conserve energy, 3 such examples would be using motion sensors, LED light bulbs and natural ventilation. Motion sensors help save electricity by turning off energy consuming devices such as lamps when no one is around, this would be extremely useful at Jurong Lake Park because around evening 7pm when the lamps are turned on, certain parts of Jurong Lake Park would be crowded whereas another part of Jurong Lake Park would be deserted, by using motion sensors, energy will not have to be spent unnecessarily. LED light bulbs have a considerably low wattage compared to the cheaper alternative - halogen light bulbs, the halogen light bulb may be cheaper in the short term but LED light bulbs would be a wiser choice as they use lesser energy and have a much longer lifespan than their competitor, Jurong Lake Park would benefit greatly by using LED light bulbs as the park covers a large area with quite a number of lamps scattered around the park, by using LED light bulbs, it will be cost efficient in the long term as it consumes lesser electricity which will lead to a cheaper electricity bill and the bulbs would not need to be replaced as often as halogen bulbs. Natural ventilation helps cool a building without using things such as air-conditioner, this could help lower their electricity bill. 

An example of how motion sensors function 

LED bulbs vs Halogen Bulbs

A simple diagram of how natural ventilation works 

Design of park lamps for maximising visibility 

Some lamps in Cleantech Park have solar panels placed above them, these solar panels will convert light energy to electricity during the day and when it gets dark the lamps will utilise this energy. Most lamps have a shade above them to reflect the light to the ground, without the shade, light will shine in every direction which leaves only a small amount of light shining to the ground. 

Credits

Xin Ru and Irfa: Write up for part A

Yong Xuan and Alyssa: Write up for part B