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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ASME does not approve, rate, or endorse any item, construction, proprietary device, or activity. These appendices contain pragmatic techniques that use lesser accuracyinstrumentation and procedures that will allow plant personnel to maintain the lowest turbinebackpressures without the higher costs or engineering efforts associated with acceptance testing.
It is typically not supplied nor tested as part of the ACC. K Pressure Contours — No Wind 63????? For a commercial test, this phi-losophy is in the best interest of all parties to the test. Partial differential equations, governing fluid flow, heat amse, etc.
ASME PTC 30.1-2007.pdf
Signifi-cant deviations shall be corrected during the preliminarytest run if practicable. A test is the average of a series of test runs. The maximum uncertainties shown below are lim-its not targets.
Also called condensate receiver. NTU Number of heat transfer units. Unstable conditions can disqualify a test, asdefined in para. These sections describe the informationrequirements, the computational methods, and the ptv to be made in order to determine ACC perform-ance from test data and to compare the test performanceto the guarantee performance for a specified design.
Particular care shall be taken to ensure that all piping and connections are leak-free. Therefore, multiple test cases are not required even if there is more than one guarantee case.
Cite the applicable paragraph number s and the topic of the inquiry. For a commercial test, this phi- losophy is in the best interest of all parties to the test.
ASME PTC (R) – Air-Cooled Steam Condensers
HgA 3 for ACC inlet air dry-bulb temperature: If such preliminary test run complies with all the necessary requirements of the appropriate test code, it may be used as an official test run within the meaning of this Code.
Turbine Back Pressure should correspond to one or two guarantee cases. Phrase the question as a request for an interpretation of a specific requirement suitable for general understanding and use, not as a request for an approval of a proprietary design or situation.
ASME issues written replies to inquiries concerning interpretations of technical aspects of thisdocument.
It could have been mitigated to some extent by changes in the design, wind-wall baffling or arrangement of the ACC. It is often called the design case, and is usually the one guarantee case. Manifolds shall not be used.
Theseinstruments shall be separated in equal amounts andpositioned equidistantly around the ACC perimeterwith one in the center of the ACC plot. No trend line equations wereprovided. Fan motor power is handled in a separate correction. Mobile and Locomotive Cranes B This Code does not address test tolerance, margin, or allowance since these are commercial terms. The involved parties shall mutually agree on the location of this measurement point.
Rabensteine, Environmental Systems Corp. Gerhart, University of Evansville W. Performance coefficient, a convenient function. When conducted at the 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.
ASME PTC 空气冷却蒸汽冷凝剂 – MBA智库文档
Pttc are made periodically to the Code to incorporate changes that appear necessary or desirable, as demonstrated by the experience gained from the application of the Code. Additions or deletions may be necessary for a specific test arrangement.
Steam flow to the ACC shall be calculated by a massbalance around the condensate tank with considerationof any inlet flows including any makeup flow upstreamof the measurement point and the change in level of thetank during test.
Accept- able instruments for determining power, in preferred order, are a wattmeter b voltage, current, power factor meters For variable frequency drive VFD applications, suit- able measuring devices shall be used.
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. Where this Code refers to National Institute of Standards and Technology NIST 30.11 and cali- brations, those of other equivalent national standards laboratories may be used as appropriate for the locale of the testing. Before the work of revising or drafting up a Code began, a careful review of PTC 30 wasundertaken and some field-test experience with that Code was reported to the Committee.
Tests are normallystopped when the test coordinator is satisfied thatrequirements for a complete test run or series ssme runshave been achieved.
These instruments shall be separated in equal amounts and positioned equidistantly around the ACC perimeter with one in the center of the ACC plot. See Nonmandatory Appendix D. Maximum Make-up Flow Deaerator: June 24, This Code will be revised when the Society approves the issuance of a new edition.
Steam asmee rate shall be deter- mined by a mass and heat balance around the conden- sate tank and shall be arithmetically averaged. Severaltest runs, however, may be made in sequence. Therefore, it is recommended that the ptv to a commercial test agree before startingthe test and preferably before signing the contract on the method to be used for comparing thetest results to the contractual guarantees.
A thermowell should be located to provide an overall average mixed temperature of the condensate. The ACC shall be in normaloperation during the test run. In the Board decided to resume the effort to produce a performance test for air- cooled heat exchangers. PTC Coal Pulverizers. Makeup water temperature shall be measured. Sommerlad, Member Emeritus, ConsultantW.
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.