The Science of Co-Managing Energy and the Environment – Profitably

Cogeneration

Engineering Your Energy

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What is Cogeneration ? Known by many names.

! Cogeneration is simply using one energy source to produce two (2) separate forms of energy on site. In a correctly designed application, one of these forms of energy may be considered “free”, since it is a by- product of the production of the primary energy form. Efficiency may approach 75%+ vs. 30% for utilities.

What is Cogeneration ? Known by many names. continued

! Trigeneration is the simultaneous production of power/electricity, hot water/ steam and chilled water from one fuel on site. It is a cogeneration site that has added adsorption chillers for producing chilled water for A/C, etc. efficiency can reach or exceed 90% vs. 30% for utilities.

! District Energy System - (DES)

! Combined Heating and Power – (CHP)

Benefits of Cogeneration and Renewable Energy

!  Significant Saving All cost can be paid from future energy expenses

!  Long Term Stable Energy Cost

!  Environmentally Friendly

! Increased Homeland Security ….Blackout Proof

Typical Conversion Efficiency = 30%

Conversion Typical Efficiency (trigen) = 80% +

100% Fuel

Less than 20% Lost in Waste Heat

+80% Efficient Power

Excess Power Purchased by

Utility ($)

Engine Operating at 45% Waste Heat

Recovery 30%

Recovered for

Electrical Generation

Heat Energy for Cooling / Heating / Hot Water