To: Miss Norhafiza Bt Mohamad
From: Ruhidayu Bt Mohd Yusof
Date: 11 May 2014
Salam,
For this week, costing will be calculated. The costing is includes:
- material cost (i.e: LED tube light, fluorescent tube light)
- power cost every year
- total lamp faulty
- total lamp from level 1 - level 4
LED Tube Light
Material Cost
The price for 1 pcs LED tube light is RM40. The LED tube light as shown below:
 |
| LED tube light Type 1 |
On FYP 1, the price is RM 60. But it is different type of LED tube light. The type as shown below:
 |
| LED tube light Type 2 |
However, LED tube light Type 1 is more suitable to the areas at female hostel UniKL BMI. The certain areas are corridor, wash room, dry room, and toilet. Therefore, the material cost is RM40 per tube light.
Power Cost
Regarding to power cost at day 14, the total power cost is RM 1.710983. Therefore, the power cost per day is RM 0.122213071 per day.
Power cost per month:
RM 0.122213071 x 30 = RM 3.66639213
Power cost per year:
RM 3.66639213 x 12 = RM 43.99670556
Therefore, this is the total power cost per year for 1 pcs LED tube light.
Total Lamp Faulty
Average for per year for lamps faulty is 83 pcs tube light.
Therefore, the cost for lamps faulty is:
83 x RM 40 = RM 3 320
Total Lamp from Level 1 - Level 4
 |
| Total lamp for every level |
The total lamp for every level is 42. Therefore, the total lamp from level 1 until level 4 is:
42 x 4 = 168 pcs tube light
For the first year, LED tube light should take the 168 pcs tube light costing. This is due to change the fluorescent tube light to LED tube light.Therefore, the costing is:
168 x RM 40 = RM 6 720
Total Cost
For the first year, 168 pcs tube light costing should be includes in material cost. Therefore, calculation for material as shown below:
RM 6 730 + RM 3 320 = RM 10 040
Power cost for 168 tube light per year:
168 x RM 43.99670556 = RM 7 391.446534
The total cost for first year is:
RM 10 040 + RM 7 391.446534 = RM 17 431.44653
The total cost for second year is:
RM 17 431.44653 - RM 6 720 = RM 10 711.44653
For the second year, 168 pcs tube light costing is not include. Similar to third, fourth and fifth year.
Fluorescent Tube Light
Material Cost
The material cost for fluorescent is RM5 per tube light.
 |
| OSRAM Brand |
Power Cost
Regarding to power cost at day 14, the total power cost is RM 4.9013876. Therefore, power cost per day is RM 0.350099114 per day.
Power cost per month:
RM 0.350099114 x 30 = RM 10.50297343
Power cost per year:
RM 10.50297343 x 12 = RM 126.0356811
Therefore, this is total power cost per year for 1 pcs fluorescent tube light.
Total Lamp Faulty
Average for per year for lamps faulty is 83 pcs tube light.
Therefore, the cost for lamps faulty is:
83 x RM 5 = RM 415
However, regarding to Encik Wan Remeli, everytime maintenance repair the lamps, the starter also will be change. Therefore, the lamp faulty costing should be add with starter costing. Starter costing is:
83 x RM 1.5 = 124.5
Total costing for lamp faulty is:
RM 415 + RM 124.5 = RM 539.5
Total Cost
Power cost for 168 pcs fluorescent tube light per year is:
RM 126.0356811 x 168 = RM 21 173.99442
Total cost for lamp faulty is RM 539.5 per year.
Total cost for fluorescent tube light per year is:
RM 21 173.99442 + RM 539.5 = RM 21 173.49442
Therefore, this is the total cost per year by using fluorescent tube light.
Comparison
 |
| Expenditure |
Table above shows the comparison expenditure for fluorescent and LED tube light for 5 years. By using a LED tube light, BMI is able to save RM 11 020. 04789 per year. Only for the first year, BMI should invest more to material cost to replace the fluorescent tube light to LED tube light.
Even it is a small amount, but it still able to reduce electricity bill on BMI.
P/s: Presentation is coming soon.
