Air-Cooled Steam Condensers Performance Test Codes A N A M E R I C A N N A T I O N A L S T A N D A R D ASME PTC ASME. ASMEPTCRAir-Cooled Steam Condensers-This Code provides test methods for conducting and reporting thermal performance characteristics of. ASME PTC (R) Air-Cooled Steam Condensers This Code provides test methods for conducting and reporting thermal performance.
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Repeat Steps 8 and 9 axme inlet air dry-bulbtemperature. It is the constant component of thetotal measurement error delta. Therefore, the values have been read asje thecurves rather than calculated. Sequentially decrement each value of a testparameter by the increment defined in Step 4.
For a validtest run, variations in test conditions shall be within thefollowing limits: Alarge national Committee was convened the following year that was comprised of experts frommanufacturing, utility-owners, test agency, academia, and consultants in the field.
ASME PTC 30.1-2007.pdf
The parame-ter can be determined by measurement with a singleinstrument, by the average of several measurements ofthe same physical quantity, or by computation frommeasurements of other physical quantities.
The involved parties shall mutually agree onthe location of 3.01 measurement point. Measurement points shall be generally in the outerhalf of the fan radius, on the side nearest to the closestACC perimeter wall and 1 m from the outer fandiameter. Therefore, an assumed value unless otherwise specified by the vendor of 0.
ASME PTC 空气冷却蒸汽冷凝剂 – MBA智库文档
ASME Performance Test Codes provide test procedures that yield results of the highest level of accuracy consistent with the best engineering knowledge and practice currently available. Satisfactory instruments include venturi meters, orifice meters, and flow nozzles. 301.
Also called condensate forwarding pump. Deviations from the methods stated in this Code are acceptable only if it can be demonstrated to the test parties that the deviations provide equal or lower uncer- tainty in the calculated test result.
ASME PTC (R) – Air-Cooled Steam Condensers
Dooley, Alstom Power Asmd. It should be noted that the purpose of a post-test uncertainty analysis is to determine the uncertaintyof the final test results.
The following material along with the accompanying charts and tables show a worked example based on design information and field test data provided by a vendor for an actual case. This standard is also available to be included in Standards Subscriptions.
An alternative arrangement is to locate the tempera-ture instruments around the perimeter of the ACC.
This paragraph provides guidelines on theallowable deviations in operating conditions from thereference condition. For example, if the guarantee case is based on a turbine valves wide-open VWO condition with a prescribed extraction flow, then testing should take place at that condition.
See Nonmandatory Appendix I. When CFD studies are con- ducted before the plant operates but after the ACC design arrangement is established, the simulation can determine the minimal number of temperature sensors that can be utilized in a performance-monitoring pro- gram.
ASME procedures provide for reconsideration of any interpretation when or if additional information that might affect an interpretation is available.
Records indicating the most recent calibration of each instrument shall be made avail- able upon request. When the infor- 33 mation is provided in graphical or tabular form, the range of applicability is usually visually implicit in the extent of the curves or the range of values listed in the table.
A test shall be consid-ered an ASME Code Test only if the test procedurescomply with those stipulated in this Code and the post-test uncertainty analysis results are in accordance withsubsection This steam flow capability may be alternatively expressed as a deviation from design flow capability, a deviation ame design turbine backpressure, or as the absolute value of the steam tur- bine backpressure.
The measurement points shall be located downstreamfrom the fan discharge plane, within the air stream, asnear to the fan deck elevation as practical. Air bleeds, 3.1 required, shall not be continuous, but only intermittent. The curves of Fig. Exhaust steam quality 0. Methods necessary to quantify the effects on test results shall be determined by mutual agreement.
It is inherent in the ACC per-formance curves that if the performance at the designcase is met then performance at the 301. stringent caseswill also be met. Historical trending can be handled differently than acceptance testing asem less emphasis is placed on the actual measurement accuracy.
For asmw and safety reasons,fan power is typically measured at the output of themotor control center MCC. These machines areessentially enormous radiators served by a multiplicity of fans that, compared to water-cooledcondensers, are relatively expensive and generally exhibit a poorer performance.
Permissible adjustments during test runs are those required to correct malfunctioning controls, maintain equipment in safe operation, or to maintain plant stabil- ity. The ACC performance curves shall show the ptf guarantee case and shall indicate the performancerequired for that case.
It is typically not supplied nor tested as part of the ACC.