{"id":3132,"date":"2026-05-09T12:17:51","date_gmt":"2026-05-09T10:17:51","guid":{"rendered":"https:\/\/science-x.net\/?page_id=3132"},"modified":"2026-05-09T12:17:52","modified_gmt":"2026-05-09T10:17:52","slug":"space-habitat-oxygen-calculator","status":"publish","type":"page","link":"https:\/\/science-x.net\/?page_id=3132","title":{"rendered":"Space Habitat Oxygen Calculator"},"content":{"rendered":"\n<div class=\"eco-tool wp-block-group\" id=\"eco-tool-space-habitat-6e4af\">\n  <div class=\"eco-tool__header\">\n    <h2 class=\"eco-tool__title\">Space Habitat Oxygen Calculator<\/h2>\n    <p class=\"eco-tool__lead\">\n      Estimate oxygen needs for a crew living in a space habitat.\n    <\/p>\n  <\/div>\n\n  <form class=\"eco-tool__form\" id=\"eco-habitat-form-6e4af\" novalidate>\n    <div class=\"eco-tool__grid3\">\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"eco-habitat-crew-6e4af\">Crew<br>size<\/label>\n        <input class=\"eco-tool__input\" id=\"eco-habitat-crew-6e4af\" type=\"number\" min=\"1\" step=\"1\" value=\"4\" \/>\n        <div class=\"eco-tool__hint\">Number of people in the habitat.<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"eco-habitat-days-6e4af\">Mission<br>days<\/label>\n        <input class=\"eco-tool__input\" id=\"eco-habitat-days-6e4af\" type=\"number\" min=\"1\" step=\"1\" value=\"30\" \/>\n        <div class=\"eco-tool__hint\">Total duration of the stay.<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"eco-habitat-o2-6e4af\">Oxygen use<br>(kg\/person\/day)<\/label>\n        <input class=\"eco-tool__input\" id=\"eco-habitat-o2-6e4af\" type=\"number\" min=\"0.1\" step=\"0.1\" value=\"0.84\" \/>\n        <div class=\"eco-tool__hint\">Typical simplified oxygen need per person.<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"eco-habitat-recycle-6e4af\">Oxygen recycling<br>efficiency (%)<\/label>\n        <input class=\"eco-tool__input\" id=\"eco-habitat-recycle-6e4af\" type=\"number\" min=\"0\" max=\"95\" step=\"1\" value=\"50\" \/>\n        <div class=\"eco-tool__hint\">Recovered oxygen reduces supply needs.<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"eco-habitat-reserve-6e4af\">Safety reserve<br>(%)<\/label>\n        <input class=\"eco-tool__input\" id=\"eco-habitat-reserve-6e4af\" type=\"number\" min=\"0\" step=\"1\" value=\"20\" \/>\n        <div class=\"eco-tool__hint\">Extra margin for delays or emergencies.<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"eco-habitat-view-6e4af\">Main result<br>view<\/label>\n        <select class=\"eco-tool__input\" id=\"eco-habitat-view-6e4af\">\n          <option value=\"net\">Show net oxygen<\/option>\n          <option value=\"gross\">Show gross oxygen<\/option>\n        <\/select>\n        <div class=\"eco-tool__hint\">Choose what to show first.<\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"eco-tool__actions\">\n      <button type=\"button\" class=\"wp-element-button eco-tool__btn\" id=\"eco-habitat-calc-6e4af\">Calculate<\/button>\n      <button type=\"button\" class=\"wp-element-button eco-tool__btn eco-tool__btn--ghost\" id=\"eco-habitat-reset-6e4af\">Reset<\/button>\n      <div class=\"eco-tool__error\" id=\"eco-habitat-error-6e4af\"><\/div>\n    <\/div>\n  <\/form>\n\n  <div class=\"eco-tool__result\" id=\"eco-habitat-result-6e4af\" hidden>\n    <h3 class=\"eco-tool__subtitle\">Result<\/h3>\n\n    <div class=\"eco-tool__cards\">\n      <div class=\"eco-tool__card\">\n        <div class=\"eco-tool__metric-label\">Oxygen supply needed<\/div>\n        <div class=\"eco-tool__metric-value\" id=\"eco-habitat-main-6e4af\">\u2014<\/div>\n        <div class=\"eco-tool__metric-sub\" id=\"eco-habitat-main-sub-6e4af\"><\/div>\n      <\/div>\n\n      <div class=\"eco-tool__card\">\n        <div class=\"eco-tool__metric-label\">With safety reserve<\/div>\n        <div class=\"eco-tool__metric-value\" id=\"eco-habitat-reserve-result-6e4af\">\u2014<\/div>\n        <div class=\"eco-tool__metric-sub\">Recommended carried amount in this estimate<\/div>\n      <\/div>\n    <\/div>\n\n    <p class=\"eco-tool__note\">\n      Simplified educational estimate only. Real habitat life support depends on CO\u2082 removal, pressure, humidity, leaks, activity level, and system design.\n    <\/p>\n  <\/div>\n<\/div>\n\n<style>\n.eco-tool{border:1px solid rgba(0,0,0,.12);border-radius:12px;padding:16px}\n.eco-tool__header{margin-bottom:12px}.eco-tool__title{margin:0 0 8px}.eco-tool__lead{margin:0;opacity:.9}\n.eco-tool__grid3{display:grid;grid-template-columns:1fr;gap:16px}@media(min-width:860px){.eco-tool__grid3{grid-template-columns:1fr 1fr 1fr}}\n.eco-tool__field{display:flex;flex-direction:column;gap:6px}.eco-tool__label{font-weight:600}\n.eco-tool__input{width:100%;height:44px;padding:0 12px;border:1px solid rgba(0,0,0,.2);border-radius:10px;background:#fff;box-sizing:border-box;font:inherit}\n.eco-tool select.eco-tool__input{appearance:none;-webkit-appearance:none;line-height:44px;padding-right:40px;background-image:linear-gradient(45deg,transparent 50%,rgba(0,0,0,.6) 50%),linear-gradient(135deg,rgba(0,0,0,.6) 50%,transparent 50%);background-position:calc(100% - 18px) 50%,calc(100% - 12px) 50%;background-size:6px 6px;background-repeat:no-repeat}\n.eco-tool__hint{font-size:.92em;opacity:.78;min-height:38px}.eco-tool__actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:16px}.eco-tool__btn{padding:10px 22px}\n.eco-tool__btn--ghost{background:transparent!important;border:1px solid rgba(0,0,0,.2)!important}.eco-tool__btn--ghost:hover{background:rgba(0,0,0,.06)!important}\n.eco-tool__error{font-weight:600}.eco-tool__result{margin-top:16px}.eco-tool__cards{display:grid;gap:10px;grid-template-columns:1fr}@media(min-width:860px){.eco-tool__cards{grid-template-columns:1fr 1fr}}\n.eco-tool__card{border:1px solid rgba(0,0,0,.12);border-radius:12px;padding:12px}.eco-tool__metric-label{opacity:.85;font-weight:600}.eco-tool__metric-value{font-size:1.6em;font-weight:800;margin-top:6px}.eco-tool__metric-sub{opacity:.85;margin-top:6px}.eco-tool__note{margin:10px 0 0;opacity:.9}\n<\/style>\n\n<script>\n(function(){\n  const S=\"6e4af\", el=id=>document.getElementById(id+\"-\"+S);\n  const crew=el(\"eco-habitat-crew\"), days=el(\"eco-habitat-days\"), o2=el(\"eco-habitat-o2\"), recycle=el(\"eco-habitat-recycle\"), reserve=el(\"eco-habitat-reserve\"), view=el(\"eco-habitat-view\");\n  const err=el(\"eco-habitat-error\"), res=el(\"eco-habitat-result\"), main=el(\"eco-habitat-main\"), sub=el(\"eco-habitat-main-sub\"), reserveResult=el(\"eco-habitat-reserve-result\");\n  function fmt(x){return x.toLocaleString(undefined,{minimumFractionDigits:2,maximumFractionDigits:2});}\n  function calc(){\n    err.textContent=\"\";\n    const c=+crew.value,d=+days.value,o=+o2.value,r=+recycle.value,s=+reserve.value;\n    if([c,d,o,r,s].some(v=>!Number.isFinite(v))||c<1||d<1||o<=0||r<0||r>95||s<0){err.textContent=\"Please enter valid values.\";res.hidden=true;return;}\n    const gross=c*d*o;\n    const net=gross*(1-r\/100);\n    const withReserve=net*(1+s\/100);\n    main.textContent=(view.value===\"gross\"?fmt(gross):fmt(net))+\" kg\";\n    sub.textContent=view.value===\"gross\"?\"Total oxygen consumed before recycling\":\"Net oxygen after recycling\";\n    reserveResult.textContent=fmt(withReserve)+\" kg\";\n    res.hidden=false;\n  }\n  function reset(){crew.value=4;days.value=30;o2.value=0.84;recycle.value=50;reserve.value=20;view.value=\"net\";err.textContent=\"\";res.hidden=true}\n  el(\"eco-habitat-calc\").onclick=calc;el(\"eco-habitat-reset\").onclick=reset;\n})();\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Space Habitat Oxygen Calculator Estimate oxygen needs for a crew living in a space habitat. Crewsize Number of people in the habitat. Missiondays Total duration of the stay. Oxygen use(kg\/person\/day)&hellip;<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":2295,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","footnotes":""},"_links":{"self":[{"href":"https:\/\/science-x.net\/index.php?rest_route=\/wp\/v2\/pages\/3132"}],"collection":[{"href":"https:\/\/science-x.net\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/science-x.net\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/science-x.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/science-x.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3132"}],"version-history":[{"count":1,"href":"https:\/\/science-x.net\/index.php?rest_route=\/wp\/v2\/pages\/3132\/revisions"}],"predecessor-version":[{"id":3133,"href":"https:\/\/science-x.net\/index.php?rest_route=\/wp\/v2\/pages\/3132\/revisions\/3133"}],"up":[{"embeddable":true,"href":"https:\/\/science-x.net\/index.php?rest_route=\/wp\/v2\/pages\/2295"}],"wp:attachment":[{"href":"https:\/\/science-x.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3132"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}