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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Therefore, an approximation of mk p 0.
Sommerlad, Member Emeritus, ConsultantW. Figure K illustrates the temperature field, heat being transferred to the air via the tubes. Test inlet air temperature p There shall be a written procedure for the calibrationof each type of instrument. The subsections in Section 3, Guiding Principles specifically describe the following: Calculate the ACC capability using the data reduction pro- gram in Step 1 with the incremented value of each individual test parameter and all other parameters set to their base values.
Hays, Honorary Member, RetiredT. If isolationis not possible, then adjustment of the measured temper-ature utilizing energy balance with either measurementor estimate of the flow and temperature shall berequired. Condenser pressure and inlet air temperature are mea- sured by an array of instruments that are averaged.
ASME PTC 30.1-2007.pdf
The agreed methods of measurement and computation shall be defined in writing and fully described in the test report. Fan motor power is handled in a separate correction. This edition of PTC The maximum uncertainties shown below are lim- its — not targets. 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.
Theuncertainty is used to determine the quality of the testand reflects the accuracy of the test instrumentation andstability of the test conditions.
ASME PTC 空气冷却蒸汽冷凝剂 – MBA智库文档
It shall be pitched continuously upward from the primary sensing element to the pressure measurement device. If the performance data is provided in equation form, caution must be taken that the equations not same extrapolated beyond their range of applicability. If isolation is not possible, then adjustment of the measured temper- ature utilizing energy balance with either measurement or estimate pfc the flow and temperature shall be required. Gerhart, University of Evansville W.
Screen stainless steel No. The instrumentuncertainty calculated in Step 3 can be usedas a guideline for defining the perturbationincrement. This Code shall not be construed as preventing the useof advanced technologies or methods of measurementnot described herein, provided that the uncertaintyrequirements of subsection are achieved. Specifically, pressure, temperature, and conden-sate flow sensors shall be calibrated within six monthsprior to the test; electric meters and wind speed anddirection pptc shall be annually calibrated.
ASME PTC (R) – Air-Cooled Steam Condensers
Define a perturbation increment for eachparameter. The correction factor, fpc, can be calculated byfpc pm Gm pcwherem G p guarantee mass flow ratem pc p mass flow rate at measured turbinebackpressure and inlet air temperature Jorgensen, Member Emeritus, ConsultantJ.
Using the ACC pressure as an example, a 0. Revisions 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. Beforetesting, but after the on-site wiring connections aremade, there shall be sufficient comparisons of all similartemperature sensors to ensure their relative accuracy. The subsections in Section 3, Guiding Principlesspecifically describe the following: The air removal sys-tem is typically supplied and tested as part of the ACC.
In the Board decided to resume the effort to produce a performance test for air- cooled heat exchangers. These sections describe the informationrequirements, the computational methods, and the com-parisons 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.
Note that where thisCode refers to NIST standards and calibrations, othernations equivalent standards laboratories may be usedas appropriate for the locale of the testing.
The primary format for graphical presentation, which was chosen for use in Section 5, Computation of Results, and Nonmandatory Appendix A, Sample Calculations of Performance, is a plot of Condenser Pressure vs. Condenser pressure measure-ments will be arithmetically averaged.
Calculate the ACC capability using ptf datareduction program in Step 1 using the decre-mented value of each individual test parame-ter and all other parameters set to their basevalues. Each pressuremeasurement point shall be provided with a dedicatedpressure measurement device.
CFD modeling involves the solution of the fundamen- tal equations of fluid motion using numerical, compu- terized techniques. However, steam turbine bypass opera-tion shall not be allowed. As a minimum, all of the operable fansof adjacent ACC units should pgc in operation duringthe test.