10-04-2017, 09:27 PM
SUPEREFFICIENT CO-GENERATION SYSTEMS
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NEED FOR COGENERATION
Captive Cogeneration
Cogeneration involving simultaneous generation of multiple useful energy sources viz. power, heat, refrigeration / cooling, water recycling, Evaporation and Drying.
a)To reduce power and other energy costs.
b)To improve productivity and reduce costs of production through reliable uninterrupted availability of quality power from Cogeneration plant.
c)Cogeneration system helps to locate manufacturing facility in remote low cost areas.
d)Improves energy efficiency, and reduces CO2emissions therefore it supports sustainable development initiatives.
e)The system collects carbon credits which can be traded to earn revenue.
f)Due to uninterrupted power supply it improves working conditionsof employees raising their motivation. This indirectly benefits in higher and better quality production.
g)Cogeneration System saves water consumption & water costs.
h)Improves brand image and social standing.
Distributed Cogeneration
It is now worldwide trend to take recourse to Distributed Generation in preference to the large interconnected networks.
This concept called Distributed Cogeneration Systems (DCS) has gained tremendous importance world wide and particularly in North America and Europe due to following reasons.
1)DCS enables multiple sources of revenue earnings e.g. in addition to power the project can sell steam, refrigeration, recycled water, desalinated water etc.
2)Multiple sources of revenue are vitally important for power projects particularly operating on costly petroleum fuels. In DCS cost of fuel gets distributed on all these energies making the tariff of each of these energies more reasonable and therefore attractive for the purchaser.
3)Biomass based cogeneration projects are renewable energy projects. Biomass based cogeneration systems reduce NOxemissions due to reduced flame temperatures in boilers.
4)All cogeneration projects are classified under sustainable development initiatives , as they help reduce CO2emissions and earn carbon credits. Trading of carbon credit is going to be a real phenomenon in very near future. These projects being clean energy initiatives, help restore already offbalanced ecological equilibrium.
5)Cogeneration projects are also water saving projects. This is because heat from exhaust steam of steam turbine is not directly rejected in cooling tower but it is either sold to consumers or used for driving Ammonia Absorption Refrigeration Plant (AARP) which in turn can drive Cold Storages, Ice plants, AARP has one unique feature that it can be aircooled and therefore the feasibility and location of the project doesn t critically depend on availability of water.