Combined Heat & Power (Cogeneration)
The file (313 KB) will cover the following topics:
Combined Heat & Power (Cogeneration)
Combined Heat and Power (CHP) is the simultaneous generation of electricity and steam (or heat) in a single power plant. It has been long used by industries and municipalities that need process steam or heat as well as electricity. CHP or cogeneration is not usually used by large utilities which tend to produce electricity only. It is advisable only for industries and municipalities if they can produce electricity cheaper or more conveniently; otherwise, buy from the utility instead.
In theory, CHP provides the most efficient use of energy resources, often utilizing up to 90% of the heat energy of the fossil fuel. In practice, while the efficiency of entire process is recognized, its application has been limited.
Topics – Combined Heat & Power
- Combined Heat & Power, Its Uses and History
- Basic Principle of Combined Heat & Power (CHP)
- CHP or Cogeneration Plant Efficiency
- Efficiency of Separate Generation
- Types of Cogeneration Cycles
- Other CHP Technologies
- Opportunities for CHP
- Cost of CHP (Capital, O&M, Levelized)
- Applicability, Advantages, Disadvantages
- Environmental Impact & Risks
Price: 6 USD
3 Responses to “Combined Heat & Power (Cogeneration)”
Leave a Reply
March 12th, 2009 at 9:32 pm
Glad there’s info here about CHP. I’m associated with Recycled Energy Development, the leading firm on this issue, and according to DOE and EPA estimates, CHP and other forms of energy recycling can slash U.S. greenhouse emissions by 20%. That’s as much as if we removed every passenger vehicle from the road. We should be doing much more of this.
March 13th, 2009 at 9:43 am
Hi Miggs!
Thank you for the comment. I fully agree with you that recovering waste heat after the power generation cycle is one of the most effective and economical way of using scarce fossil energy and also reducing at the same time greenhouse gas emissions throughout the world.
For instance, a piston (reciprocating) diesel engine utilized for power generation would have a stand alone thermal efficiency of 36% while rejecting 64% as waste heat. Please refer to the above article for potential heat recovery of other power generation systems.
Combining with waste heat recovery systems, the CHP efficiency would increase to around 80-90%, or almost double the original stand alone efficiency of 36%, thus reducing potential greenhouse gas emission (expressed in kg CO2/kWh gross generation) by half also.
Considering that piston engines constitute anywhere from 10-20% of global power generation, the weighted effect of CHP diesel engines and other generation technologies will surely reach the 20% reduction in greenhouse gas emissions you have estimated.
An example of CHP is in power generation and space heating applications in tenement houses, offices, hospitals and schools.
I am glad that your company is a leading provider in the US and possibly in other countries worldwide. Cheers…. Admin – Marcial
November 25th, 2009 at 8:16 am
[...] http://energytechnologyexpert.com/about-energy/combined-heat-power-cogeneration/ [...]