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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Particular care shall be taken to ensure that all piping and connections are leak-free. 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.
Asme ptc 30 1 pdf – ptc 30 1 pdf Asme ptc 30 Note that the pressure in the condensate tankis not the same as the condenser pressure, due to pres-sure drop in the steam duct and equalization line. Hennon, Clean Air D. At a minimum, 20 pipe diameters of undisturbed,straight pipe length upstream and four pipe diametersdownstream of the flow measurement device shall beprovided.
If these locations are not accessible, due to the design of the ACC, then other locations shall be selected and agreed upon. Maximum Make-up Flow Deaerator: At least one inlet dry-bulb temperature measuringpoint per fan shall be selected, with a minimum of 12total inlet dry-bulb temperature-measuring points perunit.
Use of an ultrasonic flowmeter will likely result in a greater uncertainty for thecondensate flow measurement as compared to an inlineflow element. For other power distribu- tion schemes, best efforts shall be made to select a mea- surement location to minimize corrections between the location of power measurement and the location of power guarantee.
Backfitting an existing system for the required measurements can be very expensive and time-consuming at best, and virtu- ally impossible at worst. Consult the guiding principles, particularly para.
ASME PTC 30.1-2007.pdf
The condensate temperature should be equal or greater than the guaranteed value. Measured performance test values of steam turbine exhaust pressure may be differ- ent from the design value.
These sections describe the information requirements, 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 performance to the guarantee performance for a specified design. Figure K gives an overall view and shows the wind walls, the steam ducts leading from the turbine, and some external structure.
Typical adjust- ments prior to tests are those required to correct malfunc- tioning controls or instrumentation or to optimize plant performance for current operating conditions. The review shall include a post-test uncertainty analysis for evaluation of devia- tions from ideal of the following, and the effects of these deviations on the test results: For a commercial test, this phi- losophy is in the best interest of all parties to the test.
Estimates of systematic and random errorfor each of the proposed test measurements shall beused to help determine the number and quality of testinstruments required for compliance with Code or con-tract specifications.
ASME PTC (R) – Air-Cooled Steam Condensers
Four-wire RTDs shallbe used. Manual readings using local instrumenta- pgc, although not recommended, are an alternative. Use of an ultrasonic flow meter will likely result in a greater uncertainty for the condensate flow measurement as compared to an inline flow element. No part of this document may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher.
Therefore, an assumed value unless otherwise specified by the vendor of 0. The equations, however, might be inadvertently used with values beyond their limits of validity.
NTU Number of heat transfer units. Alternatively an ultrasonic flow meter may be uti- lized. At the request and cost of the requesting party, a post-test calibration may be performed. If the post-test uncertainty isgreater than 4.
The overall uncertainty in the ACC capability for the test series is: Calculate the design value of the steam quality of the Steam Turbine exhaust steam by: Backfitting anexisting system for the required measurements can bevery expensive and time-consuming at best, and virtu-ally impossible at worst.
The instrument uncertainty calculated in Step 3 can be used as a guideline for defining the perturbation increment.
This is the value by which each parameter can be changed to create a small change in the calculated result. All technical inquiries must be submitted in writing to the staff secretary. Furthermore, high wind velocities can lead towarm air recirculation, causing an additional degrada-tion of ACC performance. Inlet air temperature, C 9.
The performance curves shall depictoperation with all fans running at full speed.