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

SCOPE
1.1 The computer programs included in this practice provide a calculational procedure for predicting the heat loss or gain and surface temperatures of insulated pipe or equipment systems. This procedure is based upon an assumption of a uniform insulation system structure, that is, a straight run of pipe or flat wall section insulated with a uniform density insulation. Questions of applicability to real systems should be resolved by qualified personnel familiar with insulation systems design and analysis. In addition to applicability, calculational accuracy is also limited by the range and quality of the physical property data for the insulation materials and systems.
1.2 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: 26-Jan-1989
• ICS: 27.220 - Heat recovery. Thermal insulation
• Technical Committee: C16 - Thermal Insulation
• Drafting Committee: C16.30 - Thermal Measurement

Relations

• Replaces: ASTM C680-89(1995)e1 - 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: 27-Jan-1989
• Replaced By: 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
• 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: 27-Jan-1989
• Referred By: ASTM C1045-19 - Standard Practice for Calculating Thermal Transmission Properties Under Steady-State Conditions
• Effective Date: 27-Jan-1989
• Referred By: ASTM F683-23 - Standard Practice for Selection and Application of Thermal Insulation for Piping and Machinery
• Effective Date: 27-Jan-1989
• Referred By: ASTM C1696-20 - Standard Guide for Industrial Thermal Insulation Systems
• Effective Date: 27-Jan-1989
• Referred By: ASTM C553-13(2019) - Standard Specification for Mineral Fiber Blanket Thermal Insulation for Commercial and Industrial Applications
• Effective Date: 27-Jan-1989
• Referred By: ASTM C547-22a - Standard Specification for Mineral Fiber Pipe Insulation
• Effective Date: 27-Jan-1989
• Referred By: ASTM C612-14(2019) - Standard Specification for Mineral Fiber Block and Board Thermal Insulation
• Effective Date: 27-Jan-1989
• Referred By: ASTM C1393-19 - Standard Specification for Perpendicularly Oriented Mineral Fiber Roll and Sheet Thermal Insulation for Pipes and Tanks
• Effective Date: 27-Jan-1989
• Referred By: ASTM C1129-17 - Standard Practice for Estimation of Heat Savings by Adding Thermal Insulation to Bare Valves and Flanges
• Effective Date: 27-Jan-1989
• Referred By: ASTM C1371-15(2022) - Standard Test Method for Determination of Emittance of Materials Near Room Temperature Using Portable Emissometers
• Effective Date: 27-Jan-1989
• Referred By: ASTM C1057-22 - Standard Practice for Determination of Skin Contact Temperature from Heated Surfaces Using a Mathematical Model and Thermesthesiometer
• Effective Date: 27-Jan-1989
• Referred By: ASTM C892-19 - Standard Specification for High-Temperature Fiber Blanket Thermal Insulation
• Effective Date: 27-Jan-1989
• Referred By: ASTM C335/C335M-23 - Standard Test Method for Steady-State Heat Transfer Properties of Pipe Insulation
• Effective Date: 27-Jan-1989

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 – 89 (Reapproved 2002)
Standard Practice for
Determination of Heat Gain or Loss and the Surface
Temperatures of Insulated Pipe and Equipment Systems by
1
the Use of a Computer Program
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 X3.5 Flow Chart Symbols and Their Usage in Information
4
Processing
1.1 The computer programs included in this practice pro-
4
X3.9 Standard for Fortran Programming Language
vide a calculational procedure for predicting the heat loss or
gain and surface temperatures of insulated pipe or equipment
3. Terminology
systems. This procedure is based upon an assumption of a
3.1 Definitions—For definitions of terms used in this prac-
uniform insulation system structure, that is, a straight run of
tice, refer to Terminology C 168.
pipe or flat wall section insulated with a uniform density
3.2 Symbols:Symbols—The following symbols are used in
insulation. Questions of applicability to real systems should be
the development of the equations for this practice. Other
resolved by qualified personnel familiar with insulation sys-
symbols will be introduced and defined in the detailed descrip-
tems design and analysis. In addition to applicability, calcula-
tion of the development.
tional accuracy is also limited by the range and quality of the
physical property data for the insulation materials and systems.
where:
1.2 This standard does not purport to address all of the 2 2
h = surface coefficient, Btu/(h·ft ·°F) (W/(m ·K))
2
safety concerns, if any, associated with its use. It is the
k = thermal conductivity, Btu·in./(h·ft ·°F)(W/(m·K))
responsibility of the user of this standard to establish appro-
k = constant equivalent thermal conductivity introduced
a
2
priate safety and health practices and determine the applica-
by the Kirchhoff transformation, Btu·in./(h·ft ·F)
bility of regulatory limitations prior to use.
(W/(m·K))
Q = total time rate of heat flow, Btu/h (W)
t
2. Referenced Documents
Q = time rate of heat flow per unit length, Btu/h·ft (W/m)
l
2
2.1 ASTM Standards:
q = time rate of heat flow per unit area, Btu/(h·ft )
2 2
C 168 Terminology Relating to Thermal Insulation (W/m )
2 2
C 177 Test Method for Steady-State Heat Flux Measure- R = thermal resistance, (°F·h·ft )/Btu (K·m /W)
r = radius, in. (m)
ments and Thermal Transmission Properties by Means of
2
t = local temperature, °F (K)
the Guarded Hot Plate Apparatus
t = temperature of inner surface of the insulation, °F (K)
i
C 335 Test Method for Steady-State Heat Transfer Proper-
2
t = temperature of ambient fluid and surroundings, °F
a
ties of Horizontal Pipe Insulation
(K)
C 518 Test Method for Steady-State Heat Flux Measure-
x = distance in direction of heat flow (thickness), in. (m)
ments and Thermal Transmission Properties by Means of
2
the Heat Flow Meter Apparatus
C 585 Practice for Inner and Outer Diameters of Rigid
4. Summary of Practice
Thermal Insulation for Nominal Sizes of Pipe and Tubing
2 4.1 The procedures used in this practice are based upon
(NPS System)
standard steady-state heat transfer theory as outlined in text-
E 691 Practice for Conducting an Interlaboratory Study to
3 books and handbooks. The computer program combines the
Determine the Precision of a Test Method
functions of data input, analysis, and data output into an
2.2 ANSI Standards:
easy-to-use, interactive computer program. By making the
program interactive, little operator training is needed to per-
1
This practice is under the jurisdiction of ASTM Committee C16 on Thermal
form fast, accurate calculations.
Insulation and is the direct responsibility of Subcommittee C16.30 on Thermal
4.2 The operation of the computer program follows the
Measurement.
Current edition approved Jan. 27, 1989. Published May 1989. Originally
e1
published as C 680 – 71. Last previous edition C 680 – 82 .
2 4
Annual Book of ASTM Standards, Vol 04.06. Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
3
Annual Book of ASTM Standards, Vol 14.02. 4th Floor, New York, NY 10036.
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.
C 680 – 89 (2002)
procedure listed below: this change is generally continuous and can be mathematically
4.2.1 Data Input—The computer requests and th
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