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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If these locations are not accessible, due to the design of the ACC, then other locations shall be selected and agreed upon. The useof a data acquisition system is recommended. Numerical constants usedin the equations and examples in the Code, unless other-wise specified, are based on SI Units. Figure K shows a larger view of the velocity field, indicating the effect that the wind wall has in modifying the fan inlet flow distribution.
Also called margin or allow- ance, and not further considered in this Code. Specific design conditions are denoted in the figure. Observations during preliminary test runsshould be carried through to the calculation of resultsas an overall check of procedure, layout, and organiza-tion. If isolation is not possible, then adjustment of the measured temper- ature utilizing energy balance with either measurement or estimate of the flow and temperature shall be required.
In that case the temperature shall be adjusted for thepump work.
tpc Adjustments are only permitted provided that thedeviation and stability criteria of para. Note that the pressure in the condensate tank is not the same as the condenser pressure, due to pres- sure drop in the steam duct and equalization line.
ASME PTC 空气冷却蒸汽冷凝剂 – MBA智库文档
Published 300.1 Jan View Download Gerhart, Lawrence Technological University vii F. This Code addresses test uncertainty in the following four sections: The Committee welcomes proposals for revisions to this Code. The estimated values of the testparameters form the base case. For any other guarantee case, the performance curves are expected to show that the ACC performance is equal to or better than the requirements of the case.
This standard is not included in any packages. ASME Codes are developed and maintained with the intent to represent the consensus of concerned interests. Bannister, Member Emeritus, ConsultantJ.
Calculate the ACC capability using the data reduction pro- gram in Step 1 with the incremented value of each individual asmd parameter and all other parameters set to their base values. The casing is defined as a surface, as shown in the lower part of Fig.
Furthermore, high wind velocities can lead to warm air recirculation, causing an additional degrada- tion of ACC performance.
This steam flow capability may be alternatively expressed as a deviation from design flow capability, a deviation from design turbine backpressure, or as the absolute value of the steam tur- bine backpressure.
ASME PTC 30.1-2007.pdf
The ACC shall be in normaloperation during the test run. The following information is based on that document and is included here foremphasis and for the convenience of the as,e of the Code.
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. It is the constant component of thetotal measurement error delta.
The review shall includea post-test uncertainty analysis for evaluation of devia-tions from ideal of the following, and the effects of thesedeviations on the test results: Pgc test coordinator may extend or terminate the test if the requirements are www. At a minimum, 20 pipe diameters of undisturbed,straight pipe length upstream and four pipe diametersdownstream of the flow measurement device shall beprovided.
The resultwill be a set of values of ACC capability includ-ing the change caused by each test parametersperturbation. The calibration range shall cover the Reynolds number expected for the pipe at the design flow. Ifrequired, dissolved oxygen shall be measured in accor-dance with Nonmandatory Appendix F. The involved parties shall mutually agree onthe location of this measurement point.
The application of uncertainties to adjust test results is not part of this Code; the test results themselves pro- vide the best indication of actual performance.
Operating conditions must be asconstant as practical before the test run begins and shallbe maintained throughout asne test run in order to mini-mize the associated random uncertainty.
Instrument calibration shall be conducted in advance of the test. The method and results of this correction shall be mutually agreed between the parties and xsme into account in the fan motor input power measurement. Only ACC pressure and inlet air dry-bulb temperature have spatial components. The duration of 2 days ensures thata sufficient variation of uncontrolled asje, suchas wind speed and direction, within the limits of theCode are encountered.
This Codeaddresses test uncertainty in the following four sections: Measurement points shall be generally in the outer half of the fan radius, on the side nearest to the closest ACC perimeter wall and 1 m from the outer fan diameter. Connecting plate Flow 1 in.