{"id":9263,"date":"2020-12-21T18:05:13","date_gmt":"2020-12-21T18:05:13","guid":{"rendered":"https:\/\/insulation.org\/?page_id=9263"},"modified":"2024-12-18T19:06:44","modified_gmt":"2024-12-18T19:06:44","slug":"simple-calculators","status":"publish","type":"page","link":"https:\/\/insulation.org\/training-tools\/designguide\/simple-calculators\/","title":{"rendered":"Simple Calculators"},"content":{"rendered":"<div id=\"pl-9263\"  class=\"panel-layout\" ><div id=\"pg-9263-0\"  class=\"panel-grid panel-no-style\" ><div id=\"pgc-9263-0-0\"  class=\"panel-grid-cell\" ><div id=\"panel-9263-0-0-0\" class=\"so-panel widget widget_sow-editor panel-first-child panel-last-child\" data-index=\"0\" ><div\n\t\t\t\n\t\t\tclass=\"so-widget-sow-editor so-widget-sow-editor-base\"\n\t\t\t\n\t\t>\n<div class=\"siteorigin-widget-tinymce textwidget\">\n\t<div class=\"region region-content\">\n<div id=\"block-system-main\" class=\"block block-system clearfix\">\n<div class=\"content\">\n<article id=\"node-417\" class=\"node node-systems-and-specifications clearfix\">\n<div class=\"node-main-content full-width\">\n<header><\/header>\n<div class=\"content\" style=\"clear: both;\">\n<div class=\"field field-name-field-author field-type-text-long field-label-hidden\">\n<div class=\"field-items\">\n<h2 class=\"field-item even\"><span style=\"color: #008000;\">Simple Insulation Calculators<\/span><\/h2>\n<ul>\n<li><a href=\"#calculator-1\">Condensation Control Calculator \u2013 Horizontal Pipe<\/a><\/li>\n<li><a href=\"#calculator-2\">Energy Loss for Horizontal Piping and Equipment (Vertical Flat Surfaces),\u00a0 and Annual Return Calculators<\/a><\/li>\n<li><a href=\"#calculator-3\">Financial Returns and Emissions Reduction Calculator<\/a><\/li>\n<li><a href=\"#calculator-4\">Estimate Time to Freezing for Fluid in an Insulated Pipe<\/a><\/li>\n<li><a href=\"#calculator-5\">Personnel Protection (Controlling Surface Temperature) for Horizontal Piping<\/a><\/li>\n<li><a href=\"#calculator-6\">Temperature Drop for Air in an Insulated Duct or Fluid in an Insulated Pipe Calculators<\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div class=\"field field-name-body field-type-text-with-summary field-label-hidden\">\n<div class=\"field-items\">\n<div class=\"field-item even\">\n<h2 id=\"calculator-1\">Condensation Control Calculator \u2013 Horizontal Pipe<\/h2>\n<p>This calculator estimates the thickness of insulation required to avoid condensation on the outer surface of an insulated horizontal steel pipe. Input data includes the operating temperature, ambient conditions (temperature, relative humidity, and wind speed) and details about the insulation system (material and jacketing).<\/p>\n<p>The insulation materials included in this calculator were selected to be representative of some of the materials commonly used in the industry. The list is not exhaustive, and other materials are available. Also note that some materials are not available in all the sizes and thicknesses covered by these calculators, and some are available in sizes and thicknesses not listed.<\/p>\n<p>Thermal conductivity data for the materials included in the calculator were taken from the appropriate ASTM material specification. Table 1 identifies the materials and the ASTM standards (type and\/or grade indicated) utilized in the calculator.<\/p>\n<p>Table 1. Materials and ASTM Standards Used in Condensation Control Calculator<\/p>\n<table class=\"table table-bordered\">\n<tbody>\n<tr>\n<th>Material<\/th>\n<th>Insulation Standard<\/th>\n<\/tr>\n<tr>\n<td>Cellular Glass<\/td>\n<td>ASTM C 552 Type II<\/td>\n<\/tr>\n<tr>\n<td>Elastomeric<\/td>\n<td>ASTM C 534 Type I, Gr 1<\/td>\n<\/tr>\n<tr>\n<td>Fiberglass<\/td>\n<td>ASTM C 547 Type I<\/td>\n<\/tr>\n<tr>\n<td>Flexible Aerogel<\/td>\n<td>ASTM C 1728 Type I, Gr 1B<\/td>\n<\/tr>\n<tr>\n<td>Mineral Wool<\/td>\n<td>ASTM C 547 Types II &amp; III<\/td>\n<\/tr>\n<tr>\n<td>Phenolic<\/td>\n<td>ASTM C 1126 Type III<\/td>\n<\/tr>\n<tr>\n<td>Polyethylene<\/td>\n<td>ASTM C 1427 Type I, Gr1<\/td>\n<\/tr>\n<tr>\n<td>Polyisocyanurate<\/td>\n<td>ASTM C 591 Type IV<\/td>\n<\/tr>\n<tr>\n<td>Polystyrene<\/td>\n<td>ASTM C 578 Type XIII<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li><strong>\u00a0\u00a0<a href=\"\/training-tools\/designguide\/simple-calculators\/condensation-control-calculator-for-horizontal-pipe\/\" target=\"_blank\" rel=\"noopener\">Condensation Control Calculator for Horizontal Pipe<\/a><\/strong><\/li>\n<\/ul>\n<h2 id=\"calculator-2\">Energy Loss, Emission Reduction, Surface Temperature, and Annual Return Calculators<\/h2>\n<p>As 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. These calculators estimate the performance of an insulated system given the operating temperature, ambient temperature, and other details about the system.<\/p>\n<p>The algorithms used in these energy calculators are based on the calculation methodologies outlined in ASTM C680 \u2013\u00a0Standard 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. The ASTM C680 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-state, or quasi-steady-state heat transfer conditions in field operations. Users are encouraged to review the Scope and Significance and Use sections of the standard.<\/p>\n<p>The\u00a0<strong>Equipment Calculator<\/strong>\u00a0estimates the heat flows through a vertical flat steel surface (typical of the sides of a large steel tank containing a heated or cooled fluid). Information concerning a hypothetical insulation system (e.g., the area, operating temperature, ambient temperature and wind speed, insulation material, and surface emittance) may be input by the user. Calculated results are given over a range of insulation types and thicknesses. These include: 1) surface temperature, 2)\u00a0heat flow, 3) annual cost of fuel, 4) payback period, 5) annualized rate of return, and 6) annual CO<sub>2<\/sub>\u00a0emissions.<\/p>\n<ul>\n<li><strong><i class=\"fa fa-calculator xls\" title=\"MIDG Calculator\" aria-hidden=\"true\"><\/i>\u00a0\u00a0<a href=\"\/training-tools\/designguide\/simple-calculators\/energy-calculator-for-equipment-vertical-flat-surfaces\/\" target=\"_blank\" rel=\"noopener\">Energy Calculator for Equipment (Vertical Flat Surfaces)<\/a><\/strong><\/li>\n<\/ul>\n<p>The\u00a0<strong>Pipe Calculator<\/strong>\u00a0estimates the heat flows through horizontal steel piping. 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) may be input by the user. 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)\u00a0annual CO<sub>2<\/sub>\u00a0emissions.<\/p>\n<ul>\n<li><strong><i class=\"fa fa-calculator xls\" title=\"MIDG Calculator\" aria-hidden=\"true\"><\/i>\u00a0\u00a0<a href=\"\/training-tools\/designguide\/simple-calculators\/energy-calculator-for-horizontal-piping\/\" target=\"_blank\" rel=\"noopener\">Energy Calculator for Horizontal Piping<\/a><\/strong><\/li>\n<\/ul>\n<p>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. Other orientations, geometries, and base materials are certainly encountered as well; and these may be analyzed with available software (e.g., 3E Plus\u00ae, available at\u00a0<em><a href=\"http:\/\/www.pipeinsulation.org\/\">www.pipeinsulation.org<\/a><\/em>).<\/p>\n<p>For piping systems, orientation has a minimal effect, except for bare pipe at low wind speeds. For a bare pipe in still air, vertical piping will typically have lower heat losses (5% or lower) than horizontal piping of the same diameter. For insulated piping, differences in heat loss (horizontal compared to vertical) will be minimal (lower than 1%).<\/p>\n<p>Flat horizontal surfaces in still air (e.g., the tops of heated tanks) will have higher heat losses than vertical surfaces, while horizontal surfaces with heat flow down (e.g., the bottoms of heated tanks) will have lower heat losses than vertical surfaces. Again, the differences are minimal for insulated surfaces and surfaces with moving air.<\/p>\n<p>The insulation materials included in these calculators were selected to be representative of some of the materials commonly used in the industry. As with the Condensation Control Calculator, the list is not exhaustive, and other materials are available. 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.<\/p>\n<p>Thermal conductivity data for the materials included in the calculators were taken from the appropriate ASTM material specification. Table 2 identifies the materials and the ASTM standards (type and\/or grade indicated) utilized in the calculators.<\/p>\n<p>Table 2. Materials and ASTM Standards in Energy Calculators<\/p>\n<table class=\"table table-bordered\">\n<tbody>\n<tr>\n<th>Material<\/th>\n<th>Board Insulation Standard<\/th>\n<th>Pipe Insulation Standard<\/th>\n<\/tr>\n<tr>\n<td>Calcium Silicate<\/td>\n<td>ASTM C533 Type I<\/td>\n<td>ASTM C533 Type I<\/td>\n<\/tr>\n<tr>\n<td>Cellular Glass<\/td>\n<td>ASTM C552 Type I<\/td>\n<td>ASTM C552 Type II<\/td>\n<\/tr>\n<tr>\n<td>Elastomeric<\/td>\n<td>ASTM C534 Type II, Gr 1<\/td>\n<td>ASTM C 534 Type I, Gr 1<\/td>\n<\/tr>\n<tr>\n<td>Fiberglass<\/td>\n<td>ASTM C 612 Type IB<\/td>\n<td>ASTM C547 Type I<\/td>\n<\/tr>\n<tr>\n<td>Mineral Wool<\/td>\n<td>ASTM C612 Type IV B<\/td>\n<td>ASTM C547 Type II<\/td>\n<\/tr>\n<tr>\n<td>Polyisocyanurate<\/td>\n<td>ASTM C591 Type IV<\/td>\n<td>ASTM C592 Type IV<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Cost estimates for the insulation systems are provided based on industry sources and are for illustrative purposes only. These cost estimates are based on single-layer installations with an aluminum jacketing finish. It should be noted that with some insulation systems and applications, the use of an aluminum jacket finish may not be required. The calculations assume unobstructed and reasonable access for the installation; no allowance for fittings, hangers, or penetrations; and no additional vapor retarders or sealants. Actual costs will vary, depending on local labor rates, productivity, complexity and geographic location of the project, actual insulation system, and a multitude of other factors. A cost multiplier is provided to aid in adjusting these costs for specific insulation systems and conditions.<\/p>\n<h2 id=\"calculator-3\">Financial Returns - Considerations Calculator<\/h2>\n<p>This calculator was developed to provide a convenient way to estimate the financial returns related to return on investments (ROI) in mechanical insulation: simple payback in years, internal rate of return (IRR), net present value (NPV), and annual and cumulative cash flow. It can be used for a total mechanical insulation project or for a small mechanical insulation investment such as insulating a valve or replacing a section of insulation.<\/p>\n<ul>\n<li><strong><i class=\"fa fa-calculator xls\" title=\"MIDG Calculator\" aria-hidden=\"true\"><\/i>\u00a0\u00a0<a href=\"\/training-tools\/designguide\/simple-calculators\/mechanical-insulation-financial-calculator\/\" target=\"_blank\" rel=\"noopener\">Mechanical Insulation Financial Calculator<\/a><\/strong><\/li>\n<\/ul>\n<h2 id=\"calculator-4\">Estimate Time to Freezing for Water in an Insulated Pipe<\/h2>\n<p>This calculator estimates the time for a long, fluid-filled pipe (no flow) to reach the freezing temperature.<\/p>\n<p>It is important to recognize that insulation retards heat flow; it does not stop it completely. If the surrounding air temperature remains low enough for an extended period, insulation cannot prevent freezing of still water or water flowing at a rate insufficient for the available heat content to offset heat loss. Well-insulated pipes, however, may greatly extend the time to freezing.<\/p>\n<ul>\n<li><strong><i class=\"fa fa-calculator xls\" title=\"MIDG Calculator\" aria-hidden=\"true\"><\/i>\u00a0\u00a0<a href=\"\/training-tools\/designguide\/simple-calculators\/estimate-time-to-freezing-for-water-in-an-insulated-pipe-calculator\/\" target=\"_blank\" rel=\"noopener\">Estimate Time to Freezing for Water in an Insulated Pipe Calculator<\/a><\/strong><\/li>\n<\/ul>\n<h2 id=\"calculator-5\">Personnel Protection Calculator for Horizontal Piping<\/h2>\n<p>This calculator estimates the maximum contact exposure time on the outer surface of a horizontal pipe insulation system based on the potential for contact burn injuries. Input requirements include the pipe size, operating temperature, ambient temperature and wind speed, and details about the insulation system (material and jacketing).<\/p>\n<p>The maximum contact exposure times are estimated using the procedures outlined in ASTM C1055-03 (Reapproved 2009)\u00a0\u2013 Standard Guide for Heated System Surface Conditions that Produce Contact Burn Injuries. This guide establishes a means by which the engineer, designer, or operator can determine the acceptable surface temperature of a system where contact may be made with a heated surface. The procedure requires the user to make several decisions. Careful documentation of the rational for each decision, and the intermediate result, is an important part of the evaluation process.<\/p>\n<p>For the purposes of this calculator, the maximum contact exposure times are based on an acceptable injury level of first-degree burns (reversible epidermal injury, or the limit represented by the lower \"Threshold B\" curve shown in Figure 1 of the standard). Acceptable contact times will depend on the application. Clearly, quite different contact times may be justified for cases as diverse as those involving infants and domestic appliances compared with experienced adults operating industrial equipment. Where no available standards for these times are prescribed, the standard recommends the following, based on a survey of the medical literature:<\/p>\n<ul>\n<li><strong>Industrial Process: <\/strong>5 seconds<\/li>\n<li><strong>Consumer Items: <\/strong>60 seconds<\/li>\n<\/ul>\n<p>As with the other calculators, the insulation materials included in this calculator were selected to be representative of some of the materials commonly used in the industry. The list is not inclusive of all materials and types, and others are available. Also note that some materials are not available in all the sizes and thicknesses covered by this calculator, and some are available in sizes and thicknesses not listed.<\/p>\n<p>Thermal conductivity data for the materials included in the calculator were taken from the appropriate ASTM material specification. Table 3 identifies the materials and the ASTM standards (type and\/or grade indicated) utilized in the calculator.<\/p>\n<p>Table 3. Materials and ASTM Standards Used in Personnel Protection Calculator<\/p>\n<table class=\"table table-bordered\">\n<tbody>\n<tr>\n<th>Material<\/th>\n<th>Insulation Standard<\/th>\n<\/tr>\n<tr>\n<td>Calcium Silicate<\/td>\n<td>ASTM C533 Type1<\/td>\n<\/tr>\n<tr>\n<td>Cellular Glass<\/td>\n<td>ASTM C552 Type I<\/td>\n<\/tr>\n<tr>\n<td>Elastomeric<\/td>\n<td>ASTM C534 Type II, Gr 1<\/td>\n<\/tr>\n<tr>\n<td>Fiberglass<\/td>\n<td>ASTM C612 Type IB<\/td>\n<\/tr>\n<tr>\n<td>Mineral Wool<\/td>\n<td>ASTM C612 Type IVB<\/td>\n<\/tr>\n<tr>\n<td>Polyethylene<\/td>\n<td>ASTM C1427 Type II, Gr 1<\/td>\n<\/tr>\n<tr>\n<td>Polyisocyanurate<\/td>\n<td>ASTM C591 Type IV<\/td>\n<\/tr>\n<tr>\n<td>Polystyrene<\/td>\n<td>ASTM C578 Type XIII<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul class=\"top\">\n<li><strong><i class=\"fa fa-calculator xls\" title=\"MIDG Calculator\" aria-hidden=\"true\"><\/i>\u00a0\u00a0<a href=\"\/training-tools\/designguide\/simple-calculators\/personnel-protection-calculator-for-horizontal-piping\/\" target=\"_blank\" rel=\"noopener\">Personnel Protection Calculator for Horizontal Piping<\/a><\/strong><\/li>\n<\/ul>\n<h2 id=\"calculator-6\">Temperature Drop for Air in an Insulated Duct or Fluid in an Insulated Pipe Calculators<\/h2>\n<p>These calculators estimate the temperature drop (or rise) of air flowing in a duct or fluid flowing in a pipe.<\/p>\n<p>An example of their application is in the use of insulation to minimize temperature change (either drop or rise) of a process fluid from one location to another\u2014e.g., a hot fluid flowing down a pipe.<\/p>\n<ul>\n<li class=\"bottom\"><strong><i class=\"fa fa-calculator xls\" title=\"MIDG Calculator\" aria-hidden=\"true\"><\/i>\u00a0\u00a0<a href=\"\/training-tools\/designguide\/simple-calculators\/temperature-drop-calculator-for-air-ducts\/\" target=\"_blank\" rel=\"noopener\">Temperature Drop Calculator for Air Ducts<\/a><\/strong><\/li>\n<li><strong><i class=\"fa fa-calculator xls\" title=\"MIDG Calculator\" aria-hidden=\"true\"><\/i>\u00a0\u00a0<a href=\"\/training-tools\/designguide\/simple-calculators\/temperature-drop-calculator-for-hydronic-piping\/\" target=\"_blank\" rel=\"noopener\">Temperature Drop Calculator for Hydronic Piping<\/a><\/strong><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"field field-name-field-topics field-type-taxonomy-term-reference field-label-inline clearfix\"><\/div>\n<\/div>\n<\/div>\n<\/article>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Simple Insulation Calculators Condensation Control Calculator \u2013 Horizontal Pipe Energy Loss for Horizontal Piping and Equipment (Vertical Flat Surfaces),\u00a0 and Annual Return Calculators Financial Returns and Emissions Reduction Calculator Estimate Time to Freezing for Fluid in an Insulated Pipe Personnel Protection (Controlling Surface Temperature) for Horizontal Piping Temperature Drop for Air in an Insulated Duct<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":9256,"menu_order":8,"comment_status":"closed","ping_status":"closed","template":"template-midg.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-9263","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.0 (Yoast SEO v24.0) - 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