ASTM-C740 Standard Guide for Evacuated Reflective Insulation In Cryogenic Service

ASTM-C740 - 2013 R19 EDITION - CURRENT
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Standard Guide for Evacuated Reflective Insulation In Cryogenic Service
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Scope

1.1 This practice describes the use of insulations that are characterized by the use of thermal radiation shields positioned perpendicular to the flow of heat. These are commonly referred to as high-performance insulations (HPI), multilayer insulations (MLI), or super insulations (SI) by the industry.

1.2 The practice covers the use of these insulation constructions where the warm boundary temperatures are below 350K.

1.3 Insulations of this construction are typically used when a thermal conductivity of less than 0.00087 W/m[dot]K (0.0005 Btu[dot]ft./h[dot]ft[dot]°F) is required.

1.4 Insulations of this construction are used in a vacuum environment.

1.5 This practice describes the performance considerations, typical applications, manufacturing methods, material specification, and safety considerations in the use of these insulations in cryogenic service.

1.6 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

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. For specific safety hazards see Section 8.

Keywords

cryogenic insulation; insulation; multilayer insulation; radiation; radiation shields; reflective insulation; super insulation; vacuum insulation; ICS Number Code 27.200 (Refrigerating technology)

To find similar documents by ASTM Volume:

04.06 (Thermal Insulation; Building and Environmental Acoustics)

To find similar documents by classification:

27.200 (Refrigerating technology Air-conditioners, see 23.120 Refrigerants, see 71.100.45 Household refrigerating appliances, see 97.040.30 Commercial refrigerating appliances, see 97.130.20)

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Document Number

ASTM-C0740_C0740M-13R19

Revision Level

2013 R19 EDITION

Status

Current

Modification Type

Revision

Publication Date

Sept. 1, 2019

Document Type

Practice

Page Count

19 pages

Committee Number

C16.21