Regulations on Industrial Energy Efficiency (Circular 02/2014 / TT-BCT)
This regulation defines the economic and efficient energy use in general industrial processes and management and solutions for the chemical industry. It also specifies Specific Energy Consumption for select industries.
ECONOMICAL AND EFFICIENT USE OF ENERGY IN GENERAL PROCESSES
General Requirements
The energy audit shall be implemented according to the procedures prescribed in Appendix IV of Circular No. 09/2012/TT-BCT dated April 20, 2012.
ECONOMICAL AND EFFICIENT USE OF ENERGY IN COMBUSTION PROCESSES
- The efficiency of the combustion processes must be controlled. Excess air recommendations: CO2 = 14,5 - 15 %, O2 = 2 – 3 %.
- Requirements pertaining to solid fuels (coal):
a) Determine optimal sizes for various types of incinerators: comply with Section 1.1 Appendix II of this Circular;
b) Ensure optimal moisture: comply with Section 1.1 Appendix II of this Circular;
c) Ensure homogeneity of fuels: comply with Section 1.1 Appendix II of this Circular.
ECONOMICAL AND EFFICIENT USE OF ENERGY IN HEAT SUPPLY SYSTEM AND COOLING SYSTEM
- Economical and efficient use of energy in heat supply system must satisfy the following requirements:
a) The thermal efficiency of industrial boilers: = 70% (coal combustion), 80% (oil and gas combustion).
b) Pressure loss in gas transporting pipelines < 3 bars.
c) Heat loss rate in transporting pipelines < 5%.
d) A pipeline system ensuring dilation, condensate discharge and no steam leak.
e) A steam distributing system in accordance with Section 2 Appendix II of this Circular.
- Minimum coefficient of performance (COP) of cooling system as prescribed in Section 2.2 of Circular No. 15/2013/TT-BXD dated September 26, 2013 of the Minister of Construction.
MAKING USE OF HEAT WASTE FROM SYSTEM OF COMBUSTION, HEAT SUPPLY AND HEAT TRANSFER
- Quantity of heat waste and potential application: comply with Section 3 Appendix II of this Circular.
ECONOMICAL AND EFFICIENT USE OF ENERGY IN AIR CONDITIONING SYSTEM AND HOT WATER SUPPLY
- Economical and efficient use of energy in air conditioning system and hot water supply shall comply with Section 2.2 of Circular No. 15/2013/TT-BXD
POWER LOSS PROTECTION
- Performance transformer must be between 85% -95%.
- Manage reasonable electrical load: comply with Section 4.2 Appendix II of this Circular.
ECONOMICAL AND EFFICIENT USE OF ENERGY IN ELECTRICAL ENGINES
-. Engines with the following features shall be considered replacing:
a) The engine operates at partial load that is below 60-70% of the rated capacity;
b) The engine operates at the rated capacity but it uses adjustable valve or wind leaf with aperture below 60-70% at the output;
c) The engine operates overload in some periods of significant operation;
d) The engine has been used for beyond its allowed service life without overhaul;
e) The engine is used with a significant power change during use but have not used the inverter;
g) Low-performance engine;
h) The engine of which speed is adjusted with rotor resistance.
Solutions for economical and efficient use of energy in engines
- Maintain a voltage supply with a maximum fluctuation range of 5% over the nominal value.
- Minimize phase unbalance within 1% to avoid reduced engine performance.
- Ensure that the engine load is greater than 60%.
LIGHTING TECHNOLOGY AND MANAGEMENT IN PLANTS AND OFFICES OF ENTERPRISES
- Regarding offices: apply technical standards prescribed in Section 2.3 of Circular No. 15/2013/TT-BXD
- Regarding plants: apply Vietnam’s Standards 7114:2002 (2008) for lighting system inside the buildings.
ECONOMICAL AND EFFICIENT USE OF ENERGY IN COMPRESSED AIR SYSTEM
- Using the best air compressors suitable for the requirements of the system. Criteria for selecting air compressors: comply with Section 6.1 Appendix II of this Circular. Minimize losses during compressed air supply to the technology equipment.
ENERGY-CONSUMPTION RATES AND REQUIREMENTS FOR ECONOMICAL AND EFFICIENT USE OF ENERGY IN INDUSTRIES
IMPROVEMENTS IN ENERGY EFFICIENCY IN CHEMICAL INDUSTRY
Specific energy consumption and improvements in energy efficiency in chemical industry
1. Raw rubber production sector.
a) Levels of energy consumption (refer to Section 1.1 of Appendix IV):
- For producers with a capacity of less than 5,000 metric tons per year: 44 kOE per tonne (commercial products);
- For producers with a capacity of between 5,000 metric tons and 10,000 metric tons per year: 36 kOE per tonne (commercial products);
- For producers with a capacity of 10,000 metric tons or more per year: 28 kOE per tonne (commercial products);
b) Improvements in energy efficiency:
- For producers having consumption level higher than rated level: carry out solutions for economical and efficient use of energy;
- For producers having consumption level equal to rated level or lower : keep maintaining and improving technology.
2. NPK fertilizer production sector
a) Levels of energy consumption (refer to Section 1.2 of Appendix IV)
- For producers with a capacity of less than 4,000 metric tons per year: 14.8 kOE per tonne (commercial products);
- For producers with a capacity of between 4,000 metric tons and 9,000 metric tons per year: 16.8 kOE per tonne (commercial products);
- For producers with a capacity of 9,000 metric tons or more per year: 19.7 kOE per tonne (commercial products);
b) Improvements in energy efficiency:
- For producers having consumption level higher than rated level : carry out solutions for economical and efficient use of energy;
- For producers having consumption level equal to rated level or lower: keep maintaining and improving technology.
3. Water paint production sector
a) Levels of energy consumption (refer to Section 1.3 of Appendix IV):
- Average level of energy consumption: 12.1 kOE per tonne (commercial products).
b) Improvements in energy efficiency:
- For producers having consumption level higher than rated level: carry out solutions for economical and efficient use of energy;
- For producers having consumption level equal to rated level or lower: keep maintaining and improving technology.
4. Solvent paint production sector
a) Levels of energy consumption (refer to Section 1.4 of Appendix IV):
- Average level of energy consumption: 17.7 kOE per tonne (commercial products).
b) Improvements in energy efficiency:
- For producers having consumption level higher than rated level: carry out solutions for economical and efficient use of energy;
- For producers having consumption level higher than rate level: keep maintaining and improving technology.
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