Trigeneration or combined Heat Power and Chilling (CHPC)

Trigeneration or combined Heat Power and Chilling (CHPC)

Trigeneration (CHPC) is the simultaneous process of cooling, heating and power generation from only one fuel input. Trigeneration provides a third form of energy: cooling energy in addition to heat and power. Trigeneration systems – are typically a combination of cogeneration plants and chillers to produce electricity, heat and cooling energy in one process. Waste heat is thereby converted tochilled water, either by absorption or adsorption chiller technology. The by-product is waste heat, which is then directed to boiler and absorption chillers for cooling, hot water etc. Trigeneration is the process by which some of the heat produced by a Cogeneration plant is used to generate chilled water for air conditioning.

CHPC systems consist of a power system which can be an internal combustion engine driven by afossil fuel or biofuel driven systems coupled to a generator which produces electricity. A heat recovery system recovers heatfrom the power system and exhaust gases to be used for heating applications.

Typical Diagram of Trigeneration Plant - Heat + Power + Chilled Water

Benefits of Trigeneration Application (CHPC)

  • Payback period on trigeneration integration in industrial applications to very less.
  • Using captive generation from gas-based trigeneration instead of electricity buffers industrial consumers against unforeseen spikes in electricity cost. As a relatively independent energy source, it can provide a reliable level of back-up power especially in critical applications, such as hospitals, Industrial and commercial applications.
  • Using natural gas replaces dependence on coal, while nullifying the need for additional energy inputs for heat and cooling generation. Trigeneration systems can hence reduce an establishment’s greenhouse gas emissions by up to 50%
  • Trigeneration plants enable up to 80% of primary energy to reach end use, as opposed to only 25% in conventional power plants. And, producing electricity on-site minimizes transmission losses from grid-sourced electricity.
  • Absorption chillers commonly use water or ammonia as a refrigerant, making trigeneration-based cooling a zero Ozone Depleting Potential and Global Warming Potential system.

Utilities Generated from Waste Heat

Exhaust / Flue Gas
  • Steam up to 16 Bars (g) Pressure
  • Chilled Water for Standard & Precision Air-Conditioning
  • Chilled water up to -10°C for the Process cooling
  • Steam up to 16 Bars (g) Pressure
  • Chilled Brine / Liquid Ammonia for Sub zero Temperature Process requirements
  • Hot Air up to 5000°C for Drying & Heating
  • Steam up to 16 Bars (g) Pressure
  • Hot Oil / Thermic Fluid for Heating & Drying Applications
  • Hot Water for Industrial Use or for Air-Conditioning
Jacket Water Heat
  • Chilled Water for Standard & Precision Air-Conditioning
  • Chilled water up to 10°C for Process Cooling
  • Hot water up to 850°C for Process & Air-Conditioning
  • Hot Air up to 750°C