27.220 热回收、绝热 标准查询与下载



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The major contribution of this practice is that it enables a measurement of the real-time energy loss or gain through a chosen surface of an existing process insulation with minimal disturbance to the heat flux through the insulating body. The primary use of this practice will be for the in-situ estimation of thermal transport properties of industrial insulation such as used on pipes, tanks, ovens, and boilers, operating under normal process conditions. Errors attributable to heat flow measurements over a small area or short term testing can be misleading and this practice is intended to minimize such errors. Insulation processes with large temperature differences across the insulation are best suited to HFT measurements because modest changes in ambient conditions have but minimal effects on HFT output. While it would be ideal for the HFT and attachment system to have zero thermal resistance, this factor is insignificant to the measured result if kept to 5 % or less of the resistance of the insulating section being tested.1.1 This practice covers the in-situ measurement of heat flux through industrial thermal insulation using a heat flux transducer (HFT). 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.3 This practice estimates the thermal transport properties of thermal insulation materials in-situ in field applications under pseudo steady-state conditions. It is not intended that this practice should be used as a substitute for more precise laboratory procedures such as Test Methods C177, C335, or C518. 1.4 This practice is limited by the relatively small area that can be covered by an HFT and by the transient effects of environmental conditions. 1.5 Temperature limitations shall be as specified by the manufacturer of the HFT. 1.6 While accurate values of heat flux are highly dependent upon proper calibrations under the conditions of use, it is acceptable to use the calibrations provided by the manufacturer of the HFT for comparative work between similar materials, aging, or other conditions of use. Note 18212;Further information may be found in the literature (1-6). 1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Practice for In-Situ Measurements of Heat Flux in Industrial Thermal Insulation Using Heat Flux Transducers

ICS
27.220
CCS
Q25
发布
2010
实施

1.1 This specification covers the composition, dimensions, and physical properties of metal-mesh covered mineral fiber (rock, slag, or glass) blanket and blanket-type pipe insulation (typically on 24 in. (610 mm) diameters or larger) for use on cooled surfaces at temperatures operating below ambient to 0°F (−18°C) and on heated surfaces operating at temperatures up to 1200°F (649°C). Specific applications outside the actual use temperatures shall be agreed upon between the manufacturer and purchaser. 1.2 For satisfactory performance, properly installed protective vapor retarders or barriers shall be used on below ambient temperature applications to reduce movement of moisture/water vapor through or around the insulation towards the colder surface. Failure to use a vapor retarder can lead to insulation and system damage. Refer to Practice C921 to aid material selection. Although vapor retarder properties are not part of this specification, properties required in Specification C1136 are pertinent to applications or performance. 1.3 The orientation of the fibers within the blanket is primarily parallel to the heated surface. This specification does not cover fabricated pipe and tank wrap insulation where the insulation has been cut and fabricated to provide fiber orientation that is perpendicular to the heated surface. 1.4 This standard does not purport to provide the performance requirements of hourly-rated fire systems. Consult the manufacturer for the appropriate system. 1.5 See Supplementary Requirements for modifications to sections in this standard only when specified by purchaser in the contract or order from the U.S. Military specifications utilized by the U.S. Department of Defense, Department of the Navy, and the Naval Systems Command. 1.6 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory requirements prior to use.

Standard Specification for Mineral Fiber Blanket Insulation and Blanket-Type Pipe Insulation (Metal-Mesh Covered) (Industrial Type)

ICS
27.220
CCS
Q25
发布
2010
实施

The purpose of this practice is to ensure satisfactory fit on standard sizes, to accommodate radial expansion of pipes and tubes which are heated after being insulated, and to minimize the number of insulation sizes and thicknesses to be manufactured and stocked. While it is possible to manufacturer insulation to these recommended dimensions, exercise care in attempting to nest layers of different materials, or layers supplied by different manufacturers. Individual manufacturing processes will operate at slightly different tolerances. While the product will fit the pipe, it is possible that it will not readily nest as the outer layer between the different materials, or with a different manufacturer, and possibly the same manufacturer. Exercise care to determine these differences before specifying or ordering nesting sizes. The wide range of outer diameter dimensional tolerances will prevent many pipe and tube insulations from nesting for staggered joints or double layered applications, or both unless specified when ordered from the manufacturer, distributor, or fabricator. 4.4 Dimensions in accordance with this practice do not necessarily permit application of one thickness of pipe insulation over another (Nesting or Simplified Dimensional System) to obtain total thicknesses greater than those manufactured as single layer, or for multilayer application when desired.1.1 This practice is intended as a dimensional standard for preformed thermal insulation for pipes and tubing. 1.2 This practice covers insulation supplied in cylindrical sections and lists recommended single layer inner and outer diameters of insulation having nominal wall thicknesses from ½ to 5 in. (13 to 127 mm) to fit over standard sizes of pipe and tubing. 1.3 The values stated in inch-pound units are to be regarded as the standard. The values stated in SI units are provided for information only. 1.4 This standard does not purport to address the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Practice for Inner and Outer Diameters of Thermal Insulation for Nominal Sizes of Pipe and Tubing

ICS
27.220
CCS
Q25
发布
2010
实施

This standard applies to insulation work on industrial installations. These comprise production and distribution installations in industry and in technical building equipment, e.g. appliances, vessels columns, tanks, steam generators, pipe systems, heating, ventilation, air-conditioning, and hot and cold water installations. Where fire protection requirements exist, the appropriate standards (see clause 2) or building inspectorate approvals shall be heeded. This standard does not apply to insulation work on the building envelope, internal partitions and false ceilings, or to marine and automobile construction or the controlled area of nuclear power plants.

Insulation work on industrial installations and building equipment - Execution of thermal and cold insulations

ICS
27.220
CCS
Q25
发布
2008-03
实施

1.1 This specification covers the types, physical properties, and dimensions of cellular polypropylene intended for use as thermal insulation for temperatures from - 150 to + 240°F (-101 to + 116°C). 1.2 The use of thermal insulation materials covered by this specification is regulated by codes that, when adopted by an authority having jurisdiction, address fire properties for specific applications. Note 18212;Both fire properties and specific fire-test-response characteristics may be addressed by specifications, where codes or government regulations do not apply. 1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are mathematical conversions to SI units that provided for information only and are not considered standard. 1.4 The physical properties addressed by this specification are impacted by end use conditions. For design purposes, obtain physical properties from the manufacturer. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Specification for Cellular Polypropylene Thermal Insulation

ICS
27.220
CCS
Q25
发布
2008
实施

1.1 This specification covers two grades of extruded preformed flexible cellular polyolefin thermal insulation. Grade 1 is for operating temperatures from -150F to 200F (-101C to 93C). Grade 2 is for operating temperatures from -297F to 250F (-182C to 121C). For specific applications, the actual temperature limit shall be agreed upon between the manufacturer and the purchaser.1.2 The use of thermal insulation materials covered by this specification are governed by codes and standards that address fire performance. Contact manufacturer for specific performance of product at the intended use thickness.1.3 This specification covers the physical properties of preformed flexible cellular polyolefin thermal insulation, which have been deemed mandatory for thermal design. Physical properties such as density and coefficient of thermal expansion (CTE) have been deemed nonmandatory for thermal design. Nonmandatory physical properties have been included in for information purposes only.1.4 The values stated in inch-pound units are to be regarded as the standard. The metric unit equivalents of inch-pound units, given in parentheses, are approximate.1.5 The following safety hazards caveat pertains only to the test methods portion, Section , of this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Specification for Extruded Preformed Flexible Cellular Polyolefin Thermal Insulation in Sheet and Tubular Form

ICS
27.220
CCS
发布
2007-11-15
实施

This International Standard defines the use of the heat flow meter method (see 2.2.2) to measure the steady-state heat transfer through flat slab specimens and the calculation of the heat transfer properties of specimens. This is a secondary or relative method since the ratio of the thermal resistance of the specimen (S) to that of a standard specimen (S) is measured .

Thermal insulation -- Determination of steady-state thermal resistance and related properties -- Heat flow meter apparatus

ICS
27.220
CCS
发布
2007-06-05
实施

Standard Practice for In-Situ Measurements of Heat Flux in Industrial Thermal Insulation Using Heat Flux Transducers

ICS
27.220
CCS
发布
2007-05-01
实施

The document deals with insulation work on production and distribution equipment in industrial buildings and on household installations, e. g. appliances, containers, towers, tanks, steam generators, pipelines, heating plant, ventilation and air-conditioning plant as well as hot and cold water installations.

Insulation work on industrial installations and building equipment - Execution of thermal and cold insulations

ICS
27.220
CCS
P04;Q25
发布
2007-03
实施

이 규격은 주택 등의 난방(냉방) 또는 급탕 배관에 사용하는 공장에서 피복재를 입힌 소구

Method of testing to determine the thermal properties of insulated heating tubes (hot water circulation procedure)

ICS
27.220
CCS
Q77
发布
2006-11-03
实施
2006-11-03

Thermal insulation-Determination of steady-state thermal resistance and related properties-Guarded hot plate apparatus

ICS
27.220
CCS
发布
2006-10-27
实施

Thermal insulation-Moisture effects on heat transfer-Determination of thermal transmissivity of a moist material

ICS
27.220
CCS
发布
2006-10-27
实施

Thermal insulation-Determination of steady-state thermal resistance and related properties-Heat flow meter apparatus

ICS
27.220
CCS
发布
2006-10-27
实施

Thermal insulation-Moisture effects on heat transfer-Determination of thermal transmissivity of a moist material

ICS
27.220
CCS
发布
2006-10-27
实施

Thermal insulation-Determination of steady-state thermaltransmission properties of thermal insulation for circular pipes

ICS
27.220
CCS
发布
2006-10-27
实施

Thermal insulation-Determination of steady-state thermal resistance and related properties-Guarded hot plate apparatus

ICS
27.220
CCS
发布
2006-10-27
实施

규격은 평판 슬래브 시험편을 통과하는 정상 상태 열전달을 측정하는 보호 열판법의사용을

Thermal insulation-Determination of steady-state thermal resistance and related properties-Guarded hot plate apparatus

ICS
27.220
CCS
N11
发布
2006-10-27
实施
2006-10-27

이 규격은 정상 상태 수분 조건, 즉 수분의 이동에 의해 영향을 받지 않는 조건하에서 함

Thermal insulation-Moisture effects on heat transfer-Determination of thermal transmissivity of a moist material

ICS
27.220
CCS
P31
发布
2006-10-27
实施
2006-10-27

Thermal insulation-Determination of steady-state thermal resistance and related properties-Heat flow meter apparatus

ICS
27.220
CCS
发布
2006-10-27
实施

Thermal insulation-Determination of steady-state thermaltransmission properties of thermal insulation for circular pipes

ICS
27.220
CCS
发布
2006-10-27
实施



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