Energy Savings from Large Scale CHP CHP saves energy by using the rejected heat from power production for heating, which is a significant component of building energy use, comprising 46% of the site energy used by buildings in the US. A number of American district steam systems obtain part of their heat supply from CHP, but high steam pressures limit cogenerated power. A prior paper, presented at the World Energy Engineering Congress, described a new public domain technology, for recycling reject heat from power plants that increases the amount of cogenerated power and simplifies piping. This paper describes techniques of mining publicly available data to estimate the potential savings from using this heat. In the base case, energy savings of about 0.32 million barrels of oil per day and CO2 savings of about 38 million tons per year were obtained.
Results for New England, a pipeline-constrained area, are natural gas savings of 14% of the pipeline capacity, and CO2 savings of 7.6 million tons
of CO2 per year. In the 9 states under the Regional Greenhouse Gas
Initiative, CO2 savings were 17.8% of the current cap. The results of varying various parameters are also given.
Robert Timmerman, P.E., C.E.M., LEED AP
R W Timmermam & Associates
Mr. Robert Timmerman holds Bachelor’s and Master’s degrees in Mechanical Engineering from Cornell University, is a Registered Professional Engineer in Pennsylvania by examination, and is Registered in Massachusetts and New Jersey. He is a Certified Energy Manager, and has done independent research in energy conservation, district heating and cooling, and combined heat and power. He holds several patents on district heating and combined heat and power technology.
Mr. Timmerman’s projects include: