tailieunhanh - GasTurbine Engineering HandbookSecond Edition phần 3

Việc bổ sung một intercooler một chu kỳ tái tạo tua-bin khí làm tăng hiệu suất nhiệt của chu kỳ và làm việc ra bởi vì một phần lớn hơn của nhiệt cần thiết cho quá trình c-3 trong Hình 2-7 có thể được lấy từ tuabin nóng liên tục đối với bán kính đầu vào cảm ứng. Phân phối prewhirl được thể hiện trong hình 6-13. V 1 | Performance and Mechanical Standards 149 ASME Performance Test Code on Overall Plant Performance ASME PTC 46 1996 This code is written to establish the overall plant performance. Power plants which produce secondary energy output such as cogeneration facilities are included within the scope of this code. For cogeneration facilities there is no requirement for a minimum percentage of the facility output to be in the form of electricity however the guiding principles measurement methods and calculation procedures are predicated on electricity being the primary output. As a result a test of a facility with a low proportion of electric output may not be capable of meeting the expected test uncertainties of this code. This code provides explicit procedures for the determination of power plant thermal performance and electrical output. Test results provide a measure of the performance of a power plant or thermal island at a specified cycle configuration operating disposition and or fixed power level and at a unique set of base reference conditions. Test results can then be used as defined by a contract for the basis of determination of fulfillment of contract guarantees. Test results can also be used by a plant owner for either comparison to a design number or to trend performance changes over time of the overall plant. The results of a test conducted in accordance with this code will not provide a basis for comparing the thermoeconomic effectiveness of different plant design. Power plants are comprised of many equipment components. Test data required by this code may also provide limited performance information for some of this equipment however this code was not designed to facilitate simultaneous code level testing of individual equipment. ASME PTCs which address testing of major power plant equipment provide a determination of the individual equipment isolated from the rest of the system. PTC 46 has been designed to determine the performance of the entire heat-cycle