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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A Code precept is to design a test forthe highest practical level of accuracy based on currentengineering knowledge. Requests for Cases should also indicate the applicable edition s of the Code to which the proposed Case applies. Preparatory to any test run, the steam turbine, ACC, and all associated equip- ment shall be operated for a sufficient time to attain steady-state condition.
ASME PTC 30.1-2007.pdf
The velocity distribution though each fan is broadly similar. Sometimes called precision error. Steady-state conditions shall be obtained when the criteria of paras.
Generally a duration of 1 hr is sufficient to ensure collec- tion of a valid data set. Ideally, makeup water and ancillary flowsinto the condensate tank should be isolated. Pressure measurements shall be made with instru-ments having an accuracy of at least 0. 3.1
If the data prove to be repeatable during basically the same operating conditions, correction fac- tors to absolute performance levels can always be devel- oped from an analysis of those data sets. A single test point located in the area of the condenser pressure measurement test points is sufficient.
Except for a preliminary draft, theCode was not completed at that time due to the death of the Chair and he was its only CommitteeMember. The ACC performance curves shall show the control- ling guarantee case and shall indicate the performance required for that case. Finally, a pretest uncertainty analysis shall be used to determine the level of accuracy required for each measurement to maintain overall Code objectives for the test. Rabensteine, Environmental Systems Corp.
The overall flow behavior is affected by the partic- ular geometry considered, amse, for example, the influ- ence of porous baffles that are use to offset the effects of wind are not considered. A pretest uncertainty analysis shall be performed toestablish the expected level of uncertainties for the test,including an estimate of the random precision uncer-tainty based on experience.
Operating conditions must be asconstant as practical before the test run begins and shallbe maintained throughout the test run in order to mini-mize the associated random uncertainty.
ASME PTC 空气冷却蒸汽冷凝剂 – MBA智库文档
Any specified or contract operating conditions, or any speci- fied performance that ptx pertinent to the objective of the test shall be ascertained.
Wind direction shall be measured by a vane-type device, which may be integral to the anemometer. The application of uncertainties to adjust test resultsis not part of this Code; the test results themselves pro-vide the best indication of actual performance.
pfc However, steam turbine bypass opera-tion shall not be allowed. When conducted at asje design stage, the study would provide a reasonable engi- neering perspective on the expected results and can pro- vide insights as to how the design arrangement can be improved to be more accommodating of the local environmental impacts.
Fan power or other ancillary factors may be included. Phrase the question as a request for an interpretation of a specific requirementsuitable for general understanding and use, not as a request for an approvalof a proprietary design or situation. The mutually agreedlocation of these measurement points shall not be in thewake of structural members that may result in inaccuratemeasurements.
With regard to steam exhaust pressure and air inlet temperature measurements, refer to sections of this Code or asmw supporting PTC 19 Series Codes for instru- mentation choices. ASME does notapprove, certify, rate, or endorse any item, construction, proprietary device, or activity. Campbell, Southern Company Services M. Therefore, multiple test cases are not required even asm there is more than one guarantee case. Enter the performance curve at the measured ACC pressure and inlet air temperature to find a steam mass flow rate.
This standard is also available to be included in Standards Subscriptions. Alternatively asne plates shall be constructed as shown in Fig. For four ACC pressure measurements, mp 4. ASME accepts responsibility for only those interpretations of this document issued in accordance with the establishedASME procedures and policies, which precludes the issuance of interpretations by individuals.