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Bước 2 và 3 thường đòi hỏi cách tiếp cận quảng cáo-hoc theo đặc điểm của mỗi trang web cụ thể. Vì vậy, một phương pháp luận nói chung là không áp dụng cho các hoạt động như vậy. 7.2.4.2 Nghiên cứu khả thi sơ bộ phương pháp tiếp cận AGA Manual-GKCO Consultants (1982) đã phát triển một tính khả thi đồng phát (kỹ thuật và kinh tế) đánh giá | 172 Energy Management Handbook data confirm selected alternative and finally size the plant equipment and systems to match the application. Step 3. Design Documentation. This includes the preparation of project flow charts piping and instrument diagrams general arrangement drawings equipment layouts process interface layouts building structural and foundation drawings electrical diagrams and specifying an energy management system if required. Several methodologies and manuals have been developed to carry out Step 1 i.e. screening analysis and preliminary feasibility studies. Some of them are briefly discussed in the next sections. Steps 2 and 3 usually require ad-hoc approaches according to the characteristics of each particular site. Therefore a general methodology is not applicable for such activities. 7.2.4.2 Preliminary Feasibility Study Approaches AGA Manual GKCO Consultants 1982 developed a cogeneration feasibility technical and economical evaluation manual for the American Gas Association AGA. It contains a Cogeneration Conceptual Design Guide that provides guidelines for the development of plant designs. It specifies the following steps to conduct the site feasibility study a Select the type of prime mover or cycle piston engine gas turbine or steam turbine b Determine the total installed capacity c Determine the size and number of prime movers d Determine the required standby capacity. According to its authors the approach taken in the manual is to develop the minimal amount of information required for the feasibility analysis deferring more rigorous and comprehensive analyses to the actual concept study. The approach includes the discussion of the following Design options or design criteria to determine 1 the size and 2 the operation mode of the CHP system. Isolated Operation Electric Load Following The facility is independent of the electric utility grid and is required to produce all power required on-site and to provide all required reserves for .
