Abstract
The objective of this study is to conduct a field survey, including data collection and measurements to study the potential of energy conservation measure of Rerm-Udom sugar factory in Udon Thani. The boiler efficiency is measured and calculated using the indirect method. The results of this study show that the most significant loss of the boilers is heat loss due to exhaust gas, which is 17.2%, while the rest heat loss is around 2%. The proposed energy conservation measure to improve the performance of the boiler is to install the economizer, which helps to increase the boiler efficiency for 1.5% and helps to produce additional electricity for 2,362,800 kWh per year or 7,088,400 Baht per year. The investment cost of the economizer is 7,200,000 Baht and the maintenance cost is around 1,000,000 Baht per year. Therefore, the payback period of the energy conservation measure is 1.2 years.
Highlights
The Department of Alternative Energy Development and Efficiency (DEDE) reports that sugar cane harvested in Thailand was 7.8 Mtons/year, equivalent to electrical energy 6,717 GWh/year [1]
After calculating heat loss using Equation 2-6, it is found that significant loss of the boilers is heat loss due to exhaust gas (L1) with 17.2% and temperature, and flue gas is 196°C that is very high
This study aims to investigate the method to improve the boiler efficiency in Rerm-Udom sugar factory in Udon Thani
Summary
There is a large amount of biomass energy from agricultural waste after harvesting. The Department of Alternative Energy Development and Efficiency (DEDE) reports that sugar cane harvested in Thailand was 7.8 Mtons/year, equivalent to electrical energy 6,717 GWh/year [1]. Thailand Alternative Energy Development Plan (AEDP2015) indicates that the share of renewable energy in electricity generation is 9.9% in the year 2014, and the target of the use of renewable energy is 30% in the year 2035 [2]. Thailand Power Development Plan (PDP2018) plans to increase electricity generation capacity from biomass powerplant for 520 MW. Bagasse, which is a waste of sugar production is used as biomass energy for steam generation in two boilers, which both capacities are 200 Ton/hr.
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