| Author | Adil, Muhammad Amjad |
| Call Number | AIT RSPR no. ET-89-11 |
| Subject(s) | Energy conservation
|
| Note | A research study (12 credits) submitted in partial fulfillment of
the requirements for the Degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | This report presents tl1e results of a study on energy
consumption and conservation opportunities in M/s Usha Siam Steel
Industries Limited.
An energy audit, limited to the normal quasi-steady state
operation of the major energy producers and users is conducted.
First and second law thermodynamic analysis are conducted and
energy conservation opportunities estimated.
Major losses in Thermax and furnace is found through f1ue
gas analysis. Reducing t h e excess air in Thermax from 125 9<> to
25 % Can save about 29 , 500 Baht/annum. Thermax can be operated at
its best efficiency by adjusting the heat transfer oil flow rate
at 4R,500 kg/ h r a nd its temperature At outlet and inlet of
Thermax At 161 .8c and 148 .2c respectively. Preheating the
furnace combustion air by recovering heat from its flue gas can
save abo11 t 660 , 000 Baht /year.
In all otl1er processes, surface heat loss is found to be
quite high as no proper insulation is provided on various process
tanks. Improving insulating on lend bath and zinc bath, alone can
save 350,000 and 250,000 Baht/annum respectively.
For chillers and electrical motors , some energy conservation
opportunities are identified and suggestions are proposed for
their operation and maintenance.
An overall saving of 2 million Baht/annum is estimated if
all the above suggestions are implemented.
Feasibility report of electricity production and
cogeneration is prepared. Self generation of electricity for base
load management can save 3.36 million Baht/annum by compensating
for the electricity power out ages. Cogeneration option would give
steam saving of 2.84 million Bah t/annum in addition to the above
figures.
Sensitivity analysis shows that for electricity production,
diesel power plant operating with heavy fuel oil required for
critical loads is suitable as it gives net yearly savings of 3
million Baht/annum. For minimum and average base loads, no
significant increase in yearly savings is found.
Cogeneration option has comparatively more yearly savings
( 9% ) for average has load of the company as compared to the
critical 1oad where savings are 5. 8 5 mi11ion Baht/ annum. |
| Year | 1989 |
| Type | Research Study Project Report (RSPR) |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Energy Technology (ET) |
| Chairperson(s) | Mohanty, B.
|
| Examination Committee(s) | Lapillonne, Bruno ;Mora, Jean-Claude ;Bo, Khin
|
| Scholarship Donor(s) | Government of Norway |
| Degree | Research Studies Project Report (M. Eng.) - Asian Institute of Technology, 1989 |