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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These effectson ACC performance may not be captured by a Codetest but should instead be considered in the design ortaken into account as a reduced asms expecta-tion, as discussed in Nonmandatory Appendix K.
This may include a situation where full electrical load cannot be attained or a case where a steam host is unavailable to accept process steam. Information as to whether or not technical inquiries are issued to this code or standard is shown on the copyright page.
First, the fan motor power measured under test conditions, WT, is corrected for ambient conditions, spe- cifically atmospheric pressure and air temperature, if they are different from design conditions. Instrument calibration shall be conducted in advance of the test.
In this manner, inconsistencies associ- ated with the test execution, communications, procedure adherence, and test schedule can be greatly diminished. Ideally, makeup water and ancillary flowsinto the condensate tank should be isolated.
Data review should start at the beginning ofthe test, providing an opportunity for immediate discov-ery of possible errors in instruments, procedures, or mea-surement methods. Users of a code or standard are expresslyadvised that determination of the validity of any such patent rights, and the risk of infringement of such rights, isentirely their own responsibility.
A decision that significantly characterizes an ACC monitoring program is whether to observe periodically, continuously, or both. Each pressuremeasurement point shall be provided with a dedicatedpressure measurement device.
But it was infrequently used due to the difficulty of measuring the airflow through the equipment and other aspects of its application to the great variety of exchangers that existed and the minimal acceptance testing that was traditionally specified in the general heat exchanger industry. Partial differential equations, governing fluid flow, heat transfer, etc.
ASME PTC 空气冷却蒸汽冷凝剂 – MBA智库文档
Switching from automatic to manual control andadjusting operating limits or set points of instrumentsor equipment should be avoided during a test run. To provide an overall averaged measurement, thereshall be at least four measurement points per turbineexhaust. A ther-mowell should be suitably located to accurately measurethis temperature. The measured test steam flow is obtained from Table A A typical CFD model study follows.
They were being applied however in order to conserve water resources; to allow a particular plant to be located in water scarce regions; to reduce the aquatic and airborne environmental effects often associated with once-through or phc cooling towers; and to bring projects to completion quickly without having to address restrictive regulations related to any as,e use of cooling waters.
A formal data sheet ;tc be constructed so no readings are overlooked. ASME does not take any position with respect to the validity of any patent rights asserted asms connection with anyitems mentioned in this document, and does not undertake to insure anyone utilizing a standard against liability forinfringement of any applicable letters patent, nor assumes any such liability.
ASME PTC 30.1-2007.pdf
In this case, the loss in performance would vary with the particular ACC geometry, wind speed, and direction. In the Board decided to resume the effort to produce a performance test for air-cooled heat exchangers. The following discussion describes the considera- tions of the performance monitoring tests 3.1 air-cooled steam condensers. The instrument uncertainty calculated in Step 3 can be used as a guideline for defining the perturbation increment.
ASME PTC (R) – Air-Cooled Steam Condensers
Calculate total systematic standard deviation for ACC pressure by: Subsequently a committee was formed and developed an appropriate Code after several years. An example of an acceptable data sheet is in Nonmandatory Appendix G.
This will include the systematic standard deviation of all devices used to convert the parameter mea- 3.1 to an input value for the calculation spreadsheet. Makeup water is typi- cally assumed to be saturated with oxygen. The calibration range shall cover theReynolds number expected for the pipe at the designflow. Beforetesting, but after the on-site wiring connections aremade, 301 shall be sufficient comparisons of all similartemperature sensors to ensure their relative accuracy.
These instruments shall be separated in equal amounts and positioned equidistantly around the ACC perimeter with one in the center of the ACC plot. For the Stable Period case, the measuredcondensate flow p The request for interpretation should be clear and unambiguous.
This Code provides test methods for conducting and reporting thermal performance characteristics of mechanical draft air-cooled steam condensers ACC operating under asmd conditions.
The general approach is to incorporate the dimensions of the required geometry into the CFD model. All parties to the test may conduct reasonable preliminary test runs as necessary. Also called condensate forwarding pump. Turbine Back Pressure should correspond to one or two guarantee cases.
The total uncertainty for the series of test runs is calculated by: For additional details,see Nonmandatory Appendix K. Recognizing, however, the importance ofminimal turbine exhaust pressure on plant generation, the Committee also featured twoAppendices of the Code that address both methods of Performance Monitoring and RoutinePerformance Testing.
It also pro-vides guidelines for monitoring thermal performanceand conducting routine tests. Surfaces above the fans and connecting the bottom of the tubed regions have been inserted, so that air can only flow through the tube banks.