**10. Conclusions**

98 Energy Efficiency – The Innovative Ways for Smart Energy, the Future Towards Modern Utilities

practices.

**Table 3.** Estimate annual energy saving

*Case Study 3: JG Container Sdn Bhd* 

of USD100,000. Table 4 shows the estimate annual saving from the implemented measure

 Energy Cost Measure Investment Saving GJ/yr Investment (USD) Saving (USD 1 Use of low pressure steam Low cost 2665 21000 27000 2 Pressure reduction valve for distillation Low cost 6504 9300 40800 3 Insulation improvement Low cost 10789 16000 68000 4 Steam trap maintenance Low cost 4395 25000 26000 5 Condensate recovery Low cost 2943 39000 24000 6 Temperature Control Low cost 1896 8000 11500 7 Steam ejector replacement Low cost 5188 15000 32000

This company had commenced operation in Malaysia since1970 and total energy costs representing 20% of it turnover. By applying energy efficiency practices 57,300 GJ annual energy saves from the new furnace and 2,800 GJ/annum from improvements in two annealing lehr, saving in fuel cost of more than 33% from heat recovery system for the glass furnace. It is found that by total investment of USD2.5 million made a saving of USD0.6

Energy saving measure Investment (USD) Fuel Saving (%) Payback (year)

million per year. Table 6 shows the energy efficient measure and the saving affected.

1 Rebuilding furnace 2.3 million 33 4 2 Modification of one annealing lehr 17000 42 1 3 Natural gas-powered lehr 133000 67 6.5 4 Water recycle 6000 25 1

Total 2.5 miilion

Saves USD180,000 on annual energy costs, saves 37,000 GJ in fossil fuels and decreases CO2 emissions by nearly 3,000 tonnes each year. Following an energy audit, HeveaBoard, a particleboard manufacturer, replaced its fuel oil fired thermal heater with a wood dust fired thermal oil heater. This allowed the company to capitalize on a cheap source of energy, namely the excessive wood waste left over from production. HeveaBoard also engaged the services of an Energy Service Company (ESCO) to install the system which guarantees

A manufacturer of canned food based in Sarawak recorded an annual turnover of USD1.4 million in 2002 and found ways to slash its operating costs. The company identified the best

**Table 4.** Investment and saving for JG Container Sdn Bhd (Malaysia)

results and payment based on energy savings achieved.

*Case Study 5: Globalmas Sdn. Bhd. (Malaysia)* 

*Case Study 4: HeveaBoard Bhd (Malaysia)* 

TOTAL 34380 133300 229300

Energy efficiency has become one of the main tasks in energy management. Technical systems and solutions that can save energy and keep the costs down gain an importance decision. At present in buildings, equipment like air-condition, pumps and lighting had consumed high amounts of energy. A small adjustment through energy practices and energy audit can lead to a significant reduced of energy used. It is found that the available commercial tool for analyzing energy consumption and implements energy conserving measures could be a solution to minimize energy utilization. Practices of energy audit and energy efficiency activities in industries had shown a potential saving. An improvement of energy efficiency in building will be among the top priorities in the energy management worldwide together with the implementation of ISO and related standard.
