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For Insulated piping, differences in heat loss (horizontal vs. For a bare pipe in still air, vertical piping will typically have lower heat losses (by 5% or less) than horizontal piping of the same diameter. 3E Plus® available at For piping systems, orientation has a minimal effect except for bare pipe at low wind speeds.
#Building estimate for ductwork software
Other orientations, geometries and base materials are certainly encountered as well and these may be analyzed with available software (e.g. It should be noted that the horizontal pipe calculator and the vertical flat surface calculator were developed to be representative of applications typical for mechanical insulation.
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Energy Calculator for Horizontal Piping.Calculated results are given over a range of insulation types and thicknesses and include 1) surface temperature, 2) heat flow, 3) annual cost of fuel, 4) payback period, 5) annualized rate of return, and 6) annual CO 2 emissions. Information concerning a hypothetical insulation system (e.g., the length of run, pipe size, operating temperature, ambient temperature and wind speed, insulation material and surface emittance of a proposed insulation system) may be input by the user. The Pipe Calculator estimates the heat flows through horizontal steel piping. Energy Calculator for Equipment (Vertical Flat Surfaces).Information concerning a hypothetical insulation system (e.g., the area, operating temperature, ambient temperature, wind speed, insulation material and surface emittance of a proposed insulation system) may be input by the user. The Equipment Calculator estimates the heat flows through a vertical flat steel surface (typical of the sides of a large steel tank containing a heated or cooled fluid). Users are encouraged to review the Scope and Significance and Use sections of this standard. The ASTM C 680 Standard is routinely used 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. The algorithms used in these energy calculators are based on the calculation methodologies outlined in ASTM C 680 Standard Practice for Estimate of the Heat Gain or Heat Loss and the Surface Temperatures of Insulated Flat, Cylindrical, and Spherical Systems by use of Computer Programs. These calculators estimate the performance of an insulated system given the operating temperature, the ambient temperature, and other details about the system. Condensation Control Calculator for Horizontal PipeĮnergy Loss, Emission Reduction, Surface Temperature, and Annual Return CalculatorsĪs an aid to understanding the relationships between energy, economics, and emissions for insulated systems, simple calculators have been developed for equipment (vertical flat surfaces), and horizontal pipe applications.The table below identifies the ASTM specification and the material type and/or grade utilized in the calculator. Thermal conductivity data for the materials included in the calculator were taken from the appropriate ASTM material specification. Also note that some materials are not available in all of the sizes and thicknesses covered by these calculators and some are available in sizes and thicknesses not listed. The list is not exhaustive and other materials are available. The insulation materials included in this calculator were selected to be representative of some of the materials commonly used in the industry. Input data includes the operating temperature, the ambient conditions (temperature, relative humidity, and wind speed) and details about the insulation system (material and jacketing). This calculator estimates the thickness of insulation required to avoid condensation on the outer surface of an insulated horizontal steel pipe. Condensation Control Calculator – Horizontal Pipe