{"id":100059,"date":"2026-02-15T20:09:52","date_gmt":"2026-02-15T20:09:52","guid":{"rendered":"https:\/\/vibromera.eu\/?post_type=calculator&#038;p=100059"},"modified":"2026-07-11T23:27:08","modified_gmt":"2026-07-11T23:27:08","slug":"compressed-air-consumption","status":"publish","type":"calculator","link":"https:\/\/vibromera.eu\/tr\/calculators\/compressed-air-consumption\/","title":{"rendered":"Compressed-Air Same-Basis Flow Aggregation | No FAD Sizing"},"content":{"rendered":"\r\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"WebApplication\",\"name\":\"Compressed-Air Same-Basis Flow Aggregation\",\"description\":\"Aggregate sourced end-use free-air flows into a duty-weighted arithmetic average and an all-listed simultaneous sum, with separately supplied measured leakage.\",\"url\":\"https:\/\/vibromera.eu\/calculators\/compressed-air-consumption\/\",\"applicationCategory\":\"Engineering Calculator\",\"operatingSystem\":\"Any\",\"offers\":{\"@type\":\"Offer\",\"price\":\"0\",\"priceCurrency\":\"EUR\"},\"creator\":{\"@type\":\"Organization\",\"name\":\"Vibromera\",\"url\":\"https:\/\/vibromera.eu\/\"},\"dateModified\":\"2026-07-12\",\"inLanguage\":\"en\",\"isAccessibleForFree\":true}<\/script>\r\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Is the duty-weighted sum the required compressor FAD?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. It is only a time-average arithmetic sum. Compressor capacity also depends on the measured demand profile, peaks, pressure, storage, controls, treatment losses and redundancy.\"}},{\"@type\":\"Question\",\"name\":\"Can L\/min and CFM values be added directly?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Only after exact conversion and confirmation that they refer to the same reference conditions. This page requires one declared unit and basis for every row.\"}},{\"@type\":\"Question\",\"name\":\"Why is leakage entered as flow instead of a percentage?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Leakage is a separate demand constituent. A measured or otherwise justified same-basis flow avoids applying an arbitrary percentage to tool demand.\"}}]}<\/script>\r\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/vibromera.eu\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Calculators\",\"item\":\"https:\/\/vibromera.eu\/calculators\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Compressed-Air Flow Aggregation\",\"item\":\"https:\/\/vibromera.eu\/calculators\/compressed-air-consumption\/\"}]}<\/script>\r\n<link rel=\"preconnect\" 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var(--vc-border);border-radius:6px;background:transparent;font-family:var(--vc-font);font-size:13px;font-weight:500;color:var(--vc-accent);cursor:pointer;transition:all .15s}.vc-add-btn:hover{background:var(--vc-accent-light);border-color:var(--vc-accent)}\r\n.vc-rm-btn{padding:8px;border:none;background:transparent;color:var(--vc-red);cursor:pointer;font-size:18px;line-height:1;border-radius:4px;transition:background .15s}.vc-rm-btn:hover{background:var(--vc-red-light)}\r\n@media print{.vc-section-body{max-height:none!important}.vc-faq-a{max-height:none!important}.vc-results{max-height:none!important;padding:24px!important}.vc-copy-btn,.vc-section-chevron,.vc-faq-chevron,.vc-presets,.vc-promo,.vc-add-btn,.vc-rm-btn{display:none!important}}\r\n<\/style>\r\n<div class=\"vc-calculator\" id=\"vc-air\"><header class=\"vc-header\"><p class=\"vc-header-eyebrow\">Same-reference arithmetic only<\/p><h1 class=\"vc-header-title\">Compressed-Air Flow Aggregation<\/h1><p class=\"vc-header-subtitle\">Sum explicit end-use free-air flows on one declared reference basis. The duty-weighted value is a time-average estimate; the all-listed sum is a simple coincidence envelope. Neither is a compressor-sizing verdict.<\/p><div class=\"vc-badges\"><span class=\"vc-badge\">Strict rows<\/span><span class=\"vc-badge\">Measured leak flow<\/span><span class=\"vc-badge\">No FAD sizing claim<\/span><\/div><\/header>\r\n<div class=\"vc-card\"><form class=\"vc-form\" id=\"vc-form\" autocomplete=\"off\"><div class=\"vc-form-grid\"><div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-unit\">Common flow unit<\/label><select class=\"vc-select\" id=\"vc-unit\"><option value=\"lmin\">L\/min<\/option><option value=\"m3h\">m\u00b3\/h<\/option><option value=\"cfm\">ft\u00b3\/min (CFM)<\/option><\/select><\/div><div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-basis\">Flow reference basis \/ source<\/label><input class=\"vc-input\" type=\"text\" id=\"vc-basis\" maxlength=\"180\" placeholder=\"e.g. manufacturer free-air data at stated conditions\"><\/div><div class=\"vc-field vc-field-full\"><label class=\"vc-label\" for=\"vc-rows\">End uses: name; source flow; duty fraction <span class=\"vc-label-hint\">(one per line)<\/span><\/label><textarea class=\"vc-input\" id=\"vc-rows\" rows=\"8\" spellcheck=\"false\" placeholder=\"Tool A;100;0.25&#10;Tool B;200;0.5\"><\/textarea><p style=\"margin:.5rem 0 0;color:var(--vc-ink-secondary)\">Semicolon columns permit decimal commas. Duty fraction is 0\u20261 and produces only a time-average contribution.<\/p><\/div><div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-leak\">Measured\/justified leakage flow <span class=\"vc-label-hint\">(same unit and basis; enter 0 only if justified)<\/span><\/label><input class=\"vc-input\" type=\"text\" id=\"vc-leak\" inputmode=\"decimal\"><\/div><\/div><p id=\"vc-error\" role=\"alert\" style=\"margin:.75rem 0 0;color:#b42318\"><\/p><div class=\"vc-warning-box\"><p style=\"margin:0\"><strong>Comparable-flow gate:<\/strong> every q\u1d62 and leak value must be free-air\/reference volume on the same pressure, temperature, humidity and unit basis. Do not add actual compressed volume, normal volume, standard volume and manufacturer FAD values unless their definitions are reconciled.<\/p><\/div><\/form>\r\n<div class=\"vc-results\" id=\"vc-results\"><div class=\"vc-results-head\"><h2 class=\"vc-results-title\">Flow arithmetic<\/h2><button type=\"button\" class=\"vc-copy-btn\" id=\"vc-copy-btn\">Copy<\/button><\/div><div class=\"vc-result-grid\"><div class=\"vc-rcard vc-rcard-primary\"><div class=\"vc-rcard-label\">Duty-weighted average plus leakage<\/div><div class=\"vc-rcard-value\" id=\"vc-r-average\">\u2014<\/div><\/div><div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Duty-weighted end uses \u03a3(q\u1d62d\u1d62)<\/div><div class=\"vc-rcard-value\" id=\"vc-r-duty\">\u2014<\/div><\/div><div class=\"vc-rcard\"><div class=\"vc-rcard-label\">All listed source flows plus leakage<\/div><div class=\"vc-rcard-value\" id=\"vc-r-all\">\u2014<\/div><\/div><div class=\"vc-rcard\"><div class=\"vc-rcard-label\">All listed end-use flows \u03a3q\u1d62<\/div><div class=\"vc-rcard-value\" id=\"vc-r-sum\">\u2014<\/div><\/div><div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Explicit leakage flow<\/div><div class=\"vc-rcard-value\" id=\"vc-r-leak\">\u2014<\/div><\/div><div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Valid end uses<\/div><div class=\"vc-rcard-value\" id=\"vc-r-count\">\u2014<\/div><\/div><\/div><p id=\"vc-r-note\" style=\"margin:0;color:var(--vc-ink-secondary)\"><\/p><\/div><\/div>\r\n<div class=\"vc-section vc-open\"><button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"true\"><span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\ud83d\udcd8<\/span><span class=\"vc-section-title\">Meaning, ISO scope and sizing boundary<\/span><\/span><\/button><div class=\"vc-section-body\"><div class=\"vc-section-inner vc-theory\"><h3>Two different sums<\/h3><div class=\"vc-formula-box\">Q<sub>avg,arith<\/sub>=\u03a3(q\u1d62d\u1d62)+Q<sub>leak<\/sub>; &nbsp; Q<sub>all-listed<\/sub>=\u03a3q\u1d62+Q<sub>leak<\/sub><\/div><p>The first is an arithmetic time average if each duty fraction is valid over the same interval. It loses event timing and cannot predict a peak. The second assumes every listed source flow occurs together; it is not a statistical diversity calculation. Purge, drains, artificial demand and other losses must be explicit rows or otherwise measured.<\/p><h3>FAD and reference conditions<\/h3><p><a href=\"https:\/\/www.iso.org\/standard\/44769.html\" target=\"_blank\" rel=\"noopener\">ISO 1217:2009 with Amendment 1:2016<\/a> is the published displacement-compressor acceptance-test standard for volume flow and power, confirmed in 2021 and now under revision. A compressor&#8217;s stated performance must be compared on its applicable test\/reference basis; this page does not reproduce the standard or certify FAD.<\/p><p>The <a href=\"https:\/\/www.cagi.org\/assets\/documents\/pdfs\/handbook\/Chapter_4_handbook_Final2021.pdf\" target=\"_blank\" rel=\"noopener\">CAGI Compressed Air System Design guide<\/a> stresses that end-use and compressor capacity are commonly stated as free-air volume and that demand dynamics, storage and capacity control are central to design. The <a href=\"https:\/\/www.energy.gov\/sites\/prod\/files\/2015\/01\/f19\/UMPChapter22-compressed-air-evaluation.pdf\" target=\"_blank\" rel=\"noopener\">US DOE compressed-air evaluation protocol<\/a> develops load profiles from measurements and quantifies leakage separately.<\/p><div class=\"vc-warning-box\"><p style=\"margin:0\"><strong>Not compressor sizing:<\/strong> verify measured time-resolved demand\/peaks, required pressure at each point after losses, air quality\/dryers and purge, receiver\/header storage, compressor control and turndown, unloaded energy, duty rating, ambient\/altitude, redundancy, future change, leakage program and manufacturer performance at the same reference conditions.<\/p><\/div><\/div><\/div><\/div>\r\n<div class=\"vc-section\"><button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"false\"><span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\u2753<\/span><span class=\"vc-section-title\">Frequently Asked Questions<\/span><\/span><\/button><div class=\"vc-section-body\"><div class=\"vc-section-inner\"><div class=\"vc-faq-list\" id=\"vc-faq-list\"><\/div><\/div><\/div><\/div><footer class=\"vc-footer\"><p>\u00a9 2024\u20132026 <a href=\"https:\/\/vibromera.eu\/\">Vibromera<\/a><\/p><p>Same-basis flow aggregation only; no compressor capacity recommendation. Scientific review: July 2026.<\/p><\/footer><\/div>\r\n<script>(function(){'use strict';function $(i){return document.getElementById(i)}function nonneg(raw){var s=String(raw).trim().replace(\/\\s+\/g,'');if(!\/^[+]?(?:\\d+(?:[.,]\\d*)?|[.,]\\d+)$\/.test(s))return NaN;var n=Number(s.replace(',','.'));return Number.isFinite(n)&&n>=0?n:NaN}function positive(raw){var n=nonneg(raw);return n>0?n:NaN}function f(n){return n.toFixed(9).replace(\/(\\.\\d*?)0+$\/,'$1').replace(\/\\.$\/,'')}function parse(){var lines=$('vc-rows').value.split(\/\\r?\\n\/),rows=[];for(var i=0;i<lines.length;i++){if(!lines[i].trim())continue;var c=lines[i].split(';');if(c.length!==3)return{error:'Line '+(i+1)+': expected name; flow; duty fraction.'};var name=c[0].trim(),q=positive(c[1]),d=nonneg(c[2]);if(!name)return{error:'Line '+(i+1)+': equipment name is required.'};if(!Number.isFinite(q))return{error:'Line '+(i+1)+': source flow must be a positive finite number.'};if(!Number.isFinite(d)||d>1)return{error:'Line '+(i+1)+': duty fraction must be between 0 and 1.'};rows.push([name,q,d])}return rows.length?{rows:rows}:{empty:true}}function calc(){var p=parse(),leak=nonneg($('vc-leak').value),basis=$('vc-basis').value.trim();if(!p.rows||!Number.isFinite(leak)||!basis){$('vc-error').textContent=p.error||([$('vc-rows').value,$('vc-leak').value,basis].some(function(x){return x.trim()})?'Enter valid rows, an explicit non-negative leak flow and the common flow basis\/source.':'');$('vc-results').classList.remove('vc-visible');return}$('vc-error').textContent='';var sum=0,duty=0;p.rows.forEach(function(r){sum+=r[1];duty+=r[1]*r[2]});if(![sum,duty].every(Number.isFinite)){$('vc-error').textContent='The totals exceed the finite calculation range.';$('vc-results').classList.remove('vc-visible');return}var labels={lmin:'L\/min',m3h:'m\u00b3\/h',cfm:'ft\u00b3\/min'},unit=labels[$('vc-unit').value];$('vc-r-average').textContent=f(duty+leak)+' '+unit;$('vc-r-duty').textContent=f(duty)+' '+unit;$('vc-r-all').textContent=f(sum+leak)+' '+unit;$('vc-r-sum').textContent=f(sum)+' '+unit;$('vc-r-leak').textContent=f(leak)+' '+unit;$('vc-r-count').textContent=String(p.rows.length);$('vc-r-note').textContent='Basis: '+basis+' | Average and all-listed sums are arithmetic scenarios, not compressor FAD\/capacity requirements.';$('vc-results').classList.add('vc-visible');var u=new URL(location),v={common_flow_unit:$('vc-unit').value,flow_reference_basis: basis,end_uses_flow_duty:$('vc-rows').value.trim().replace(\/\\r?\\n\/g,'|'),explicit_leak_flow:leak};Object.keys(v).forEach(function(k){u.searchParams.set(k,v[k])});history.replaceState(null,'',u.toString())}$('vc-form').addEventListener('input',calc);$('vc-form').addEventListener('change',calc);$('vc-copy-btn').addEventListener('click',function(){if(navigator.clipboard)navigator.clipboard.writeText($('vc-results').innerText)});document.querySelectorAll('.vc-section-toggle').forEach(function(b){b.addEventListener('click',function(){var s=this.closest('.vc-section');s.classList.toggle('vc-open');this.setAttribute('aria-expanded',s.classList.contains('vc-open'))})});var qa=[['Is the duty-weighted result the required FAD?','No. It is a time-average arithmetic scenario and contains no peak timing, pressure\/storage\/control or compressor-performance model.'],['Why is leakage a flow input?','Leakage is a separate demand constituent. Use measured or otherwise justified flow on the same reference basis instead of a generic percentage.'],['Can CFM and L\/min values be mixed?','Not directly. Convert them and reconcile standard\/normal\/free-air reference conditions before entering one common unit and basis.']];var l=$('vc-faq-list');qa.forEach(function(v){l.innerHTML+='<div class=\"vc-faq-item\"><button type=\"button\" class=\"vc-faq-q\">'+v[0]+'<\/button><div class=\"vc-faq-a\"><div class=\"vc-faq-a-inner\"><p>'+v[1]+'<\/p><\/div><\/div><\/div>'});l.addEventListener('click',function(e){var b=e.target.closest('.vc-faq-q');if(b)b.closest('.vc-faq-item').classList.toggle('vc-open')});var z=new URLSearchParams(location.search),map={common_flow_unit:'vc-unit',flow_reference_basis:'vc-basis',explicit_leak_flow:'vc-leak'};Object.keys(map).forEach(function(k){if(z.has(k))$(map[k]).value=z.get(k)});if(z.has('end_uses_flow_duty'))$('vc-rows').value=z.get('end_uses_flow_duty').split('|').join('\\n');calc()})();<\/script>\r\n","protected":false},"excerpt":{"rendered":"<p>Aggregate sourced same-reference free-air flows into duty-weighted and all-listed arithmetic scenarios with explicit leakage; not compressor sizing.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[],"tags":[],"class_list":["post-100059","calculator","type-calculator","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/tr\/wp-json\/wp\/v2\/calculator\/100059","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/tr\/wp-json\/wp\/v2\/calculator"}],"about":[{"href":"https:\/\/vibromera.eu\/tr\/wp-json\/wp\/v2\/types\/calculator"}],"version-history":[{"count":2,"href":"https:\/\/vibromera.eu\/tr\/wp-json\/wp\/v2\/calculator\/100059\/revisions"}],"predecessor-version":[{"id":102349,"href":"https:\/\/vibromera.eu\/tr\/wp-json\/wp\/v2\/calculator\/100059\/revisions\/102349"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/tr\/wp-json\/wp\/v2\/media?parent=100059"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/tr\/wp-json\/wp\/v2\/categories?post=100059"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/tr\/wp-json\/wp\/v2\/tags?post=100059"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}