Sustainability-Far Eastern New Century

		Energy Conservation（TJ）	GHG Emission Avoided（tCO₂e）
		Energy Conservation（TJ）	Category 1	Category 2
Project	Improvement on Production Process	57	119	7,673
	Improvement on Equipment	570	0	88,605
	Energy Management	127	0	17,651
Business	Petrochemical	14	0	2,011
	Polyester	531	119	77,775
	Textile	209	0	34,143
Total		754	119	113,929

Note:
1. The estimate of energy efficiency is compared against the energy consumption with original production process and equipment prior to project implementation.

2. The calculation of calorific value is based on the factors of calorific value from all production sites.

3. GHG emission factors: GHG emission factors in Taiwan are based on “GHG Emission Factors” version 6.0.4 from Bureau of Energy, MOEA and Environmental Protection Administration. The GHG emission factor is 0.502 t-CO₂e/1000 kWh for electricity and 3.02468 t-CO₂e/t for heavy crude. Calculation of GHG emission factors for electricity in Mainland China is based on the local electrical grid and calculated at 0.7035 tCO₂e/1000 kWh.

4. Natural gas is the source of category 1 (scope 1) emission and purchased power for category 2 (scope 2) emission.

5. GHGs include CO₂, CH₄, N₂O, PFCs, HFCs, SF₆ and NF₃.

	2019	2020	2021
Actual Investment (NT$1,000)	127,361	61,959	268,365
Savings (NT$1,000)	50,078	40,958	85,467
Energy Conservation (TJ)	498	557	754
GHG Emissions Avoided (tCO₂e)	74,151	78,955	114,048

Production Site	Project	Detail	Performance
OPTC Plant 2	Heat recovery project from condensate with addition to slurry preheater	A heat exchanger is added to the preheating stage during production to recuperate residual heat from the condensate on the exterior of the preheater, increase the slurry temperature and reduce the consumption of high pressure stream in the downstream preheater, which will in turn reduce the loading of the boiler and natural gas consumption.	The project reduces 39,200T/h of high-pressure steam, approximately NT$28.5 million in costs and 4,730 tCO₂e of carbon emission per year.
OPTC Plant 2	Water pump modification project at the cooling tower	Cause and effect analysis and data collected from ultrasonic flowmeters show that the total flow of cooling water exceeds the design capacity, and therefore indicating the possibility of energy conservation. To reduce electricity consumption, hydraulic and energy calculations were performed with improvements to be conducted in 3 phases, including adjusting the outlet valve of the pump, trimming the pump impeller and using an energy efficient pump.	The project reduces 10,848,800 kWh of electricity consumption, approximately NT$69.757 million in costs and 4,595 tCO₂e in carbon emission per year. The energy saving rate reached 39.7%.
OPSC	Ceramic coating project for efficiency improvement at water cooling pump	Water cooling pump is a critical link in the cooling water circulation system at the plant. Its high flow is powered by high energy consumption. Long-term wear and tear and internal erosion created cavitation damages which lowered the efficiency. Therefore, an anti-erosion ceramic coating is applied to the pump. The ceramic material is highly adhesive, chemical resistant and hard. Coating the impeller and volute of the pump with this material will improve its efficiency, repair the rugged surface, ensure hydraulic stability, conserve energy and prolong the equipment life cycle.	Two pumps were modified in June and December 2021 for this project. Without adjusting the water flow and hydraulic head, the efficiency has been improved by 3.7%. The project reduces 92 kWh of electricity per hour, approximately NT$2.236 million in costs and 289 tCO₂e in carbon emission per year.

Production Site

Project

Detail

Performance

FEDZ

Stenter cooling project

The average temperature of a textile stenter could reach 69°C during operation. Without cotton insulation, the heat emitted from the machine would elevate the room temperature throughout the entire plant. Therefore, carbon fiber and aluminum silicate insulations are installed on the top of the stenter and the vent duct is wrapped with aluminum sheet as well as aluminum silicate insulation. The insulation has the benefit of maintaining the temperature increase inside the machine from natural gas combustion, preventing heat loss while reducing the temperature of the conduits to 28.2°C, which is close to the ambient temperature of 26.9°C. The temperature decreased by 80% compared to the previous room temperature within the plant.

The project reduces 24,575m³ of natural gas consumption, approximately NT$360,000 in costs and 53 tCO₂e of carbon emission per year.

OTIZ

Drying area improvement project at impregnation line

Discussions were conducted with suppliers regarding actual production conditions and the structure above the drying area for the impregnation line. The plan is to enclose the roller at this location. The plan to add the fume hood, oil-water separator, vent duct and exhaust vent was canceled. The aluminum plated insulator will be added, and the loop around the roller will be supported partially through the exhaust fan. While reducing the fuel consumption during production, the project also eliminates accumulation of combustible debris at the exhaust fan and conduits, hence clearing fire hazards.

Challenges: The structure of the drying area is quite unusual, and the area presents potential fire hazards.

Project highlight: The project eliminates fire hazards, conserves natural gas and increases convenience during operation. Overall, it improves the operation and management of 5S workplace.

Post-improvement: The project reduces unit consumption of natural gas from 245 m³/metric ton to 230 m³/metric ton. Based on the annual production, the project reduces NT$1.5 million dollars in costs and 1,093 tCO₂e in carbon emission per year.