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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30.1 Estimates of systematic and random error for each of the proposed test measurements shall be used to help determine the number and quality of test instruments required for compliance with Code or con- tract specifications. In terms of ACC capability, the contribution of each of the measured parameters to the total systematic uncertainty is calculated by: This review will also assist in the establish- ment of the reliability of the test.
Approved revisions will be published periodically. Under no circumstances shall a test be performed in conditions that jeopardize the safety of personnel. 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 asmme Code or con-tract specifications. The use of a data acquisition system is preferable to a manual recording system because a data acquisition system supports increased sampling frequency, increased number of otc measure- ments, and the ability to scan more instruments that in combination will reduce the random error in the measurements.
You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. A single test point located in the area of the condenser pressure measurement test points is sufficient. Using a computer, the region of interest is divided into numerous small volumes, or cells, and equations for each of 3.1 chosen ptd are solved for each cell.
The selected location shall allow forthe quantification of other loads, if any, such that theinput fan motor input power can be obtained.
ASME PTC 30.1-2007.pdf
Velocities in the steam duct areextremely high and may be turbulent. Cite the applicable edition of the Code for which the interpretation is being requested. This standard is also available to be included in Standards Subscriptions. In this manner, inconsistencies associ-ated with the test execution, communications, procedureadherence, and test schedule can be greatly diminished. You may delete a document from your Alert Profile at any time. The readings taken at the beginning and end of the test period shall be arithmeti- cally averaged.
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. 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. A post-test uncertainty 301 is similarly required. Satisfactory instruments include venturi meters, orificemeters, and flow nozzles.
The peak velocities amse the graphs correspond to the centers of the fan casings. We have no amendments or corrections for this standard. Steam flow rate shall be deter-mined by a mass and heat balance around the conden-sate tank and shall be arithmetically averaged.
Historical trending can be handled differently than acceptance testing because less emphasis is placed on the actual measurement accuracy. There shall be a written procedure for the calibrationof each type of instrument.
ASME PTC (R) – Air-Cooled Steam Condensers
Using the ACC pressure as an example, a 0. Also called guarantee point, case, or conditions. Test inlet air temperature p Wilber, Alternate, Environmental Systems Corp.
For example, air prc should be measured at the discharge of fan with instrument position governed by para. The instrumentuncertainty calculated in Step 3 can be usedas a guideline for defining the perturbationincrement. It is beyond the scope of any Code to determine orinterpret how such comparisons shall be made. Sus- pected instrumentation or measurement loops may be recalibrated. Using the Hour 4 values from Table A This code or standard was developed under procedures accredited as meeting asm criteria for American NationalStandards.
ASME PTC 空气冷却蒸汽冷凝剂 – MBA智库文档
Four-wire RTDs shall be used. Our representatives are ready to assist you in the following areas: It should benoted that the collection, reduction, and evaluation ofthermal data adme greatly facilitated through the use ofa data acquisition system. The involved parties shall mutually agree onthe location of this measurement point. Calculate the total systematic standard devia-tion for the test. A test run typically lasts about1 hr. Each pressuremeasurement point shall be provided with a dedicatedpressure measurement device.
Temperature fields with and without wind are com- pared in Fig. This Code pro- vides rules for conducting acceptance tests.
Estimate the values of the test parameters. Variables should be recorded at the following minimum frequencies: If an instrument isfound to be out of calibration, then its influence on thetest shall be evaluated. Therefore, an approximation of mk p 0. They shall be determined by methods described inpara. A thermowell should be located to provide an overall average mixed temperature of the condensate.
Therefore, an assumed value unless otherwise specified by the vendor of 0.