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 Steam Boiler/ Steam Turbine • Gas Turbine Compression Engine Spark Ignition 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 Stirling Engine → Summary of Prime Movers Electrical Output (Mwe) Typical Fuels Primary Energy Savings (%) Gas Turbine 0.5 > Flexible Up to 30 Steam Turbine 0.5 > Flexible 5 to 20 Spark Ignition Up to 4 Gas Up to 30 Compression Ignition Gas/ Heavy 2 to 15 Up to 30 Fuel Oil Up to 50 Micro Turbines Kwe 1 to 25 Sterling Engines Kwe Gas Up to 30 Flexible Up 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 CO2 emissions from buildings. Task for BSE to design and produce these types of efficient systems. Questions?