Requirements on Designated Factory
The Royal Decree on Designated Factory 1997 (B.E.2540) became in force since 17th July 1997 had determined the factory of which its feature is a single or multiple factories under one housing registration number and having different energy consumption at each year of its being effective to qualify as a “ Designated Factory”.
The factories would become the designated factories by this Royal Decree as follows:
1. The factories to be designated since 17th July 1997 are such as: any factory getting approval from power distributor to use a power meter; or to install the transformer for one or several sets in total of over 10,000 kW or 11,1750 kVA; or using electricity from the distributor system; or heat from steam of the distributor; or depleted energy from energy supplier or of self-generation, either one of such those or the overall, since 1st January up to 31st December of the previous year and having of total energy consumption in term of electricity equivalent to over 200 TJ.
2. The factories to be designated since 17th July 1998 are such as: any factory as stated above in 1 of which sizing at 3,000 kW up to < 10,000 kW; or 3,350 kVA up to < 11,750 kVA; or having total energy consumption in term of electricity equivalent from 60 TJ. up to < 200 TJ.
3. The factories to be designated since 17th July 1999 are such as: any factory as stated above in 1. of which sizing at 2000 kW up to < 3000kW: or at 2,350kVA up to < 3,530 kVA; or having a total energy consumption in term of electricity equivalent from 40 TJ. up to < 60 TJ.
4. The factories to be designated since 17th July 2000 are such as: any factory as stated above in 1 of which sizing at 1,000 kW up to < 2,000 kW or 1,175 kVA up to < 2,350kVA or having energy consumption in term of electricity equivalent from 20 TJ. up to < 40 TJ.
Criteria on Calculating an Energy Consumption in Unit of MJ
1. In case of electricity, calculate an electricity consumption in unit of kWh then multiply by 3.60.
2. In case of heat from steam, calculate a heat from steam in term of electricity equivalent by the following formula
Es = (hs – hw) * S * eff
Es is a heat from steam in term of electricity equivalent in unit of MJ/yr
hs is an Enthalpy of steam in use in unit of MJ/t from a normal steam table
hw is an Enthalpy of water at 27 degree Celsius and an atmospheric pressure to be used is 113 MJ/t
S is steam consumption in unit of t/yr read from a steam measuring meter of that designated factory
eff is an efficiency of heat conversion to electricity equivalent, a value to be used is 0.45
3. In case of other depleted energy, calculate a heat from other depleted energy in term of electricity equivalent by the following formula
Ef = F * HHV * eff
Ef is a heat from depleted energy in term of electricity equivalent in unit of MJ/yr
F is a depleted energy consumption in unit of weight or volume per year
HHV is a HHV, Higher Heating Value, of a depleted energy used in unit of MJ per unit of weight or volume.
eff is an efficiency of heat conversion to electricity equivalent, and a value to be used here is 0.45
In case of unavailable HHV from energy supplier, use an average HHV given by DEDE.
The Depleted Energy defined by the ECP Act means energy derived from coal, oil shell, oil sand, crude oil, fuels, natural gas and nuclear, etc.
Any factory wishes DEDE to investigate whether or not that factory is designated can request by filling-in its detail in a form: Form of Energy Consumption Data for Investigation of Being Regulated as a Designated Factory then submit by mail post to:
The Director of BERC, DEDE
17 Rama 1 Rd., RuangMuang, Pathumwan District, Bangkok 10330
or by FAX at +662 223 1151