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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Tests may be conducted in light rain, sleet, or snow, provided that the variation in test parameters are stable and the test conditions conform to the following limitations.
Plumley, Plumley Associate R. Also called condensate receiver. Achievement of the required accuracy for each mea- sured parameter is the single most important criterion in selection of an appropriate method of measurement. Using steam tables ame equivalent software, determine the specific enthalpy and specific entropy of the low pressure steam turbine exhaust steam at the test conditions for satu- rated xsme and saturated steam, respectively.
Piping shall be routed by the most direct practical manner. The illustra- tive example that follows is based on the values averaged for Hour 4 5: They were being applied however 301. 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 wet cooling towers; and to bring projects to completion quickly without having to address restrictive regulations related to any future use of cooling waters.
For informational and diagnostic purposes, otc any implied bearing or impact to the test and its results, ambient air dry-bulb temperature measurements may be taken.
Readings shall be taken at six positions 30 degapart around the circumference of the pipe. ASME Codes are developed and maintained with the intent to represent the consensusof concerned interests.
ASME PTC 空气冷却蒸汽冷凝剂 – MBA智库文档
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. Where this Code refers to National Institute of Standards and Technology NIST standards and cali- brations, those of other equivalent national standards laboratories may be used as prc for the locale of the testing. Already Subscribed to this document. When CFD studies are con- ducted before the plant operates but after the ACC design arrangement is established, the simulation can determine the minimal number of temperature sensors that can be utilized in a performance-monitoring pro- gram.
Only steady-state operation within the limitations of the Code as delineated in sub- section will be permitted. Before testing, but after the on-site wiring connections are made, there shall be sufficient comparisons of all similar temperature sensors to ensure their relative accuracy.
ASME PTC (R) – Air-Cooled Steam Condensers
These instruments shall be hung 1 m below the top of the air inlet opening. A single test point located in the area of the condenser pressure measurement test points is sufficient. At the request and cost of the requesting party, a post- test calibration may be performed. Requests that are not in this format will be rewritten in this format by the Committee priorto being answered, which may inadvertently change the intent of the original request.
ASME PTC 30.1-2007.pdf
The diverted steam is not con- densed in the ACC, and the condensate may or may not be returned to the condensate tank. Generally a duration of 1 hr is sufficient to ensure collec-tion of a valid data set. The diverted steam is not con-densed in the ACC, and the condensate may or may notbe returned to the condensate tank. Underno circumstances shall a test be performed in conditionsthat jeopardize the safety of personnel. Normal cogeneration steam loads shall be allowed during the test.
Not all instruments ortechniques described in this section are applicable toevery ACC test program.
HgA to 9 in. PTC Coal Pulverizers. It may be a flange or a landing amse for a weld. In terms of ACC capability,the contribution of each of the measuredparameters to the total systematic uncertaintyis calculated by: The designconditions including steam mass flow rate, steam tur-bine backpressure, steam quality, fan motor input power,atmospheric pressure, and inlet air dry bulb temperatureshall be printed on the curves.
Thebasket tips shall be constructed as shown in Fig. The walkwayor fan bridge is a suggested location.
Approved revisions will be published periodically. The following section describes a setof performance curves and illustrates how they are tobe interpreted. Four-wire RTDs shallbe used.
Manifolds shall not beused. Test variables of a secondary nature, such as windspeed and direction devices, need not be calibrated10against a reference standard, but may instead be cali-brated against other calibrated instruments or transferstandards or can be checked in place with two or moreinstruments at the same location measuring the samevariable.
Screen stainless steel No. The parame- ter can be determined by measurement with a single instrument, by the average of several measurements of the same physical quantity, or by computation from measurements of other physical quantities. Calibrations should encompass the expected measurement range and be comprised of at least two points more than the order of any calibration curve fit.
A formal data sheet should be constructed so no readings are overlooked. ASME issues written replies to inquiries concerning interpretations of technical aspects of this document. These are concepts thatmust be addressed prior to the construction of the ACC,as they will impact the test philosophy and method. Asme ptc 22 power pdf – ptc 22 power pdf If Pump then pump horsepower should replace minimum steam flow by seller.
A post-test uncertainty analysis is similarly required. Interpretations can only be rendered in response to a written request sent to the Secretary of the PTC This Code also provides procedures for assessing compliance to specified dissolved oxygen and specified condensate temperature. Inaddition, the uncertainty of Code tests that determinethe condensate temperature shall be less than 0. Forpretest uncertainty analysis, use the designvalue for condensate flow, fan power, andatmospheric pressure.
A ther- mowell should be suitably located to accurately measure this temperature. Absolute pressure transducers are required. After the corrections have been incorporated, and the incremental changes in the pressure, for exam- ple, correspond to operational changes in the pressure of the ACC, the retrieved information can be used to start an historical file on the ACC performance parame- ters.