Development of a CHP/DH system for the new town of Parand: An opportunity to mitigate global warming in Middle East

As a result of the worldwide concern about global warming, projects that target reduction of greenhouse gas emissions have gained a lot of interest. The idea of this paper is to recover exhaust hot gases of an existing gas turbine power plant to meet dynamic thermal energy requirements of a residential area (the new town of Parand) situated in the suburb of Tehran, and also use the rest of the heat source potential to feed a steam turbine cycle. In close proximity to this town, there are two GT plants: Parand (954 MWe) and Rudeshur (790 MWe). For handling the CHP/STC/DH plant, two methods are considered along with thermal load following operation strategy: maximum power generation (MPG) and minimum fuel consumption (MFC). Then, the alternatives are compared in terms of annual PES, CO2 abatement and NPV. For the best design from environmental viewpoint (Parand CHP-B), PES, CO2 abatement and NPV are calculated to be 27.31%, 2.56 million tons and 1491 million dollar, respectively.