ASTM C680-03

Standard Practice for Estimate of the Heat Gain or Loss and the Surface Temperatures of Insulated Flat, Cylindrical, and Spherical Systems by Use of Computer Programs

SCOPE
1.1 This practice provides the algorithms and calculation methodologies for predicting the heat loss or gain and surface temperatures of certain thermal insulation systems that can attain one dimensional, steady- or quasi-steady-state heat transfer conditions in field operations.
1.2 This practice is based on the assumption that the thermal insulation systems can be well defined in rectangular, cylindrical or spherical coordinate systems and that the insulation systems are composed of homogeneous, uniformly dimensioned materials that reduce heat flow between two different temperature conditions.
1.3 Qualified personnel familiar with insulation-systems design and analysis should resolve the applicability of the methodologies to real systems. The range and quality of the physical and thermal property data of the materials comprising the thermal insulation system limit the calculation accuracy.
1.4 The computer program that can be generated from the algorithms and computational methodologies defined in this practice is described in Section 7 of this practice. The computer program is intended for flat slab, pipe and hollow sphere insulation systems. An executable version of a program based on this standard may be obtained from ASTM.
1.5 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.6 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.

General Information

• Status: Historical
• Publication Date: 09-May-2003
• Technical Committee: C16 - Thermal Insulation
• Drafting Committee: C16.30 - Thermal Measurement

Relations

• Replaces: ASTM C680-89(2002) - Standard Practice for Determination of Heat Gain or Loss and the Surface Temperatures of Insulated Pipe and Equipment Systems by the Use of a Computer Program
• Effective Date: 10-May-2003
• Replaced By: ASTM C680-03e1 - Standard Practice for Estimate of the Heat Gain or Loss and the Surface Temperatures of Insulated Flat, Cylindrical, and Spherical Systems by Use of Computer Programs
• Effective Date: 10-May-2003
• Referred By: ASTM C547-22a - Standard Specification for Mineral Fiber Pipe Insulation
• Effective Date: 10-May-2003
• Referred By: ASTM C553-13(2019) - Standard Specification for Mineral Fiber Blanket Thermal Insulation for Commercial and Industrial Applications
• Effective Date: 10-May-2003
• Referred By: ASTM C1371-15(2022) - Standard Test Method for Determination of Emittance of Materials Near Room Temperature Using Portable Emissometers
• Effective Date: 10-May-2003
• Referred By: ASTM C1696-20 - Standard Guide for Industrial Thermal Insulation Systems
• Effective Date: 10-May-2003
• Referred By: ASTM C1057-22 - Standard Practice for Determination of Skin Contact Temperature from Heated Surfaces Using a Mathematical Model and Thermesthesiometer
• Effective Date: 10-May-2003
• Referred By: ASTM F3319-20 - Standard Specification for Selection and Application of Field-Installed Cryogenic Pipe and Equipment Insulation Systems on Liquefied Natural Gas (LNG)-Fueled Ships
• Effective Date: 10-May-2003
• Referred By: ASTM C592-22a - Standard Specification for Mineral Fiber Blanket Insulation and Blanket-Type Pipe Insulation (Metal-Mesh Covered) (Industrial Type)
• Effective Date: 10-May-2003
• Referred By: ASTM F683-23 - Standard Practice for Selection and Application of Thermal Insulation for Piping and Machinery
• Effective Date: 10-May-2003
• Referred By: ASTM C892-19 - Standard Specification for High-Temperature Fiber Blanket Thermal Insulation
• Effective Date: 10-May-2003
• Referred By: ASTM C1045-19 - Standard Practice for Calculating Thermal Transmission Properties Under Steady-State Conditions
• Effective Date: 10-May-2003
• Referred By: ASTM C1393-19 - Standard Specification for Perpendicularly Oriented Mineral Fiber Roll and Sheet Thermal Insulation for Pipes and Tanks
• Effective Date: 10-May-2003
• Referred By: ASTM C1055-20 - Standard Guide for Heated System Surface Conditions that Produce Contact Burn Injuries
• Effective Date: 10-May-2003
• Referred By: ASTM C1774-13(2019) - Standard Guide for Thermal Performance Testing of Cryogenic Insulation Systems
• Effective Date: 10-May-2003

Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: C 680 – 03
Standard Practice for
Estimate of the Heat Gain or Loss and the Surface
Temperatures of Insulated Flat, Cylindrical, and Spherical
1
Systems by Use of Computer Programs
This standard is issued under the fixed designation C 680; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope C 168 Terminology Relating to Thermal Insulating Materi-
2
als
1.1 This practice provides the algorithms and calculation
C 177 Test Method for Steady-State Heat Flux Measure-
methodologies for predicting the heat loss or gain and surface
ments and Thermal Transmission Properties by Means of
temperatures of certain thermal insulation systems that can
2
the Guarded Hot Plate Apparatus
attain one dimensional, steady- or quasi-steady-state heat
C 335 Test Method for Steady-State Heat Transfer Proper-
transfer conditions in field operations.
2
ties of Horizontal Pipe Insulation
1.2 This practice is based on the assumption that the thermal
C 518 Test Method for Steady-State Heat Flux Measure-
insulation systems can be well defined in rectangular, cylindri-
ments and Thermal Transmission Properties by Means of
cal or spherical coordinate systems and that the insulation
2
the Heat Flow Meter Apparatus
systems are composed of homogeneous, uniformly dimen-
C 585 Practice for Inner and Outer Diameters of Rigid
sioned materials that reduce heat flow between two different
Thermal Insulation for Nominal Sizes of Pipe and Tubing
temperature conditions.
2
(NPS System)
1.3 Qualified personnel familiar with insulation-systems
C 1055 Guide for Heated System Surface Conditions That
design and analysis should resolve the applicability of the
2
Produce Contact Burn Injuries
methodologies to real systems. The range and quality of the
C 1057 Practice for Determination of Skin Contact Tem-
physical and thermal property data of the materials comprising
perature from Heated Surfaces Using a Mathematical
the thermal insulation system limit the calculation accuracy.
2
Model and Thermesthesiometer
1.4 The computer program that can be generated from the
algorithms and computational methodologies defined in this
3. Terminology
practice is described in Section 7 of this practice. The computer
3.1 Definitions—For definitions of terms used in this prac-
program is intended for flat slab, pipe and hollow sphere
tice, refer to Terminology C 168.
insulation systems. An executable version of a program based
3.1.1 thermal insulation system—for this practice, a thermal
on this standard may be obtained from ASTM.
insulation system is a system comprised of a single layer or
1.5 The values stated in inch-pound units are to be regarded
layers of homogeneous, uniformly dimensioned material(s)
as the standard. The values given in parentheses are for
intended for reduction of heat transfer between two different
information only.
temperature conditions. Heat transfer in the system is steady-
1.6 This standard does not purport to address all of the
state. Heat flow for a flat system is normal to the flat surface,
safety concerns, if any, associated with its use. It is the
and heat flow for cylindrical and spherical systems is radial.
responsibility of the user of this standard to establish appro-
3.2 Symbols—The following symbols are used in the devel-
priate safety and health practices and determine the applica-
opment of the equations for this practice. Other symbols will
bility of regulatory limitations prior to use.
be introduced and defined in the detailed description of the
2. Referenced Documents development.
2.1 ASTM Standards:
where:
2 2
h = surface conductance, Btu/(h·ft ·°F) (W/(m ·K)) h at
i
inside surface; h at outside surface
1
o
This practice is under the jurisdiction of ASTM Committee C16 on Thermal
Insulation and is the direct responsibility of Subcommittee C16.30 on Thermal
Measurements.
Current edition approved May 10, 2003. Published July 2003. Originally
e1 2
approved in 1971. Last previous edition approved in 1995 as C 680 - 89 (1995) . Annual Book of ASTM Standards, Vol 04.06.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
C680–03
2
5. Significance and Use
k = apparent thermal conductivity, Btu·in./(h·ft ·°F) (W/
(m·K))
5.1 Manufacturers of thermal insulation express the perfor-
k = effective thermal conductivity over a prescribed tem-
e
...