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Published byPaula Jackson Modified over 8 years ago
By Mark Foley
Combined Heat and Power is the generation of electricity and usable heat simultaneously from the same fuel input. Electricity primarily used on-site, but can be sold back to grid. Thermal energy used for heating/cooling or process applications
Large Scale Small Scale Micro
Generation of electricity while using heat produced. Higher efficiency Use of waste or byproduct fuel On-site electric generation avoids distribution costs (7%) Increased reliability and power quality
Must be Simultaneous Demand for Heat & Electricity Large Capital & Maintenance costs. Require back up of power and heat Noise from CHP units
Gas Turbine Steam Boiler/ Steam Turbine
Spark Ignition up to 4 MW Compression Ignition – 15 MW Exhaust Gases around 400°C Water or Lubricating oil Systems (70 -80°C) Ratio of 2:1 Spark Ignition Compression Engine Stirling Engine →
Summary of Prime Movers Electrical Output (Mwe) Typical Fuels Primary Energy Savings (%) Gas Turbine0.5 >FlexibleUp to 30 Steam Turbine0.5 >Flexible5 to 20 Spark IgnitionUp to 4GasUp to 30 Compression Ignition 2 to 15 Gas/ Heavy Fuel Oil Up to 30 Micro Turbines Up to 50 Kwe GasUp to 30 Sterling Engines 1 to 25 Kwe FlexibleUp to 20
Base load of Heat & Power exceeding 4000 hours yearly Base Electrical Load Base Heating Load Hotels Nursing/Residential Homes University Campuses
CHP can help deliver the green agenda Development of more efficient technologies Buildings & Industries can reduce carbon footprint Still a large capital cost
Design of CHP system for the buildings use. Reducing CO 2 emissions from buildings. Task for BSE to design and produce these types of efficient systems.
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