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Case Studies

Cogeneration / CHP : Lime Chemicals Plant

Installation Information
Industry Type	Lime Chemicals
Location	Poanta Sahib, Himachal Pradesh. India
Installed & Commissioned	December 2005
Power Utilization Scheme	Synchronized with Plant Grid

Brief Scheme

Operating Data
	Before the Turbine Installation	After the Turbine Installation
Boiler Steam Generation	6 TPH @ 10 bar Dry Saturated	6 TPH @ 32 bar 320^oC
Boiler Fuel	Biomass	Biomass
Grid Power Consumption	350 kWh	25 kWh
Turbine Power Generation	0 kWh	325 kWh
Total Power Consumption	350 kWh	350 kWh
Cost of Power from Grid	Rs. 5.50 / kWh \| 0.125 $/kWh	Rs. 5.50 / kWh\| 0.125 $/kWh
Operation days per annum	300 days	300 days
Cost of Power Drawn per annum	Rs. 138.60 Lakhs \| 315,000 $	Rs. 9.90 Lakhs \| 22,500 $
Gross Savings Per annum	Rs. 128.70 Lakhs \| 292,500 $
No of Turbine Operators	Nil (virtually unmanned operation)
Maintenance Cost per Annum	Rs. 2.25 Lakhs \| 5,113 $
Cost of Additional Fuel for Power Generation	Rs. 29.72 Lakhs \| 67,546 $
Total Operation & Maintenance	Rs. 31.97 \| 72,659 $
Net Savings per Annum	Rs. 96.73 Lakhs \| 219,841 $
% Power Cost Saving	92.86 %

Notes:

	The Turbine Generator is incorporated with TurboSmart^TM Turbine Controller. This makes it possible to operate the turbine virtually unmanned. The Boiler Operator himself can attend the Turbine once in a hour for general observation and log sheet entry.
	Additional Fuel Cost is calculated considering cost of Steam Generation as Rs. 1000 per Ton of Steam (22.73 $ / Ton of Steam)
	Calculations are simplified and does not take into account cost of finance and depreciation benefit for ease of understanding. Please consult Biogreen for detailed working for your specific application.
	This turbine was installed in 2005 and has already paid back the investment. The calculations above are done with present costs.

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