{"id":46907,"date":"2026-01-03T15:09:34","date_gmt":"2026-01-03T15:09:34","guid":{"rendered":"https:\/\/maritimehub.co.uk\/?page_id=46907"},"modified":"2026-01-03T20:52:25","modified_gmt":"2026-01-03T20:52:25","slug":"exhaust-system-waste-heat","status":"publish","type":"post","link":"https:\/\/maritimehub.co.uk\/exhaust-system-waste-heat\/","title":{"rendered":"Exhaust System &amp; Waste Heat"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Why This System Matters More Than Most Engineers Admit<\/h2>\n\n\n\n<p>A modern marine diesel engine is <strong>thermodynamically brutal<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>&lt; <strong>50%<\/strong> of fuel energy becomes shaft power<\/li>\n\n\n\n<li><strong>25\u201335%<\/strong> leaves the engine through the exhaust<\/li>\n\n\n\n<li>The rest is scattered through charge air, jacket water, lube oil, radiation<\/li>\n<\/ul>\n\n\n\n<p>The exhaust system is therefore <strong>not just gas piping<\/strong>.<br>It is:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>an energy recovery system<\/li>\n\n\n\n<li>an emissions control interface<\/li>\n\n\n\n<li>a turbocharger life limiter<\/li>\n\n\n\n<li>a major failure and fire risk<\/li>\n\n\n\n<li>a regulatory compliance boundary<\/li>\n<\/ul>\n\n\n\n<p>Poor exhaust system design quietly <strong>increases fuel consumption<\/strong>, <strong>destroys turbochargers<\/strong>, <strong>cracks boilers<\/strong>, and <strong>violates IMO rules<\/strong> \u2014 often without obvious alarms.<\/p>\n\n\n\n<p>This article treats the exhaust system as a <strong>complete thermodynamic and mechanical system<\/strong>, not a collection of pipes.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Table of Contents<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Energy Balance of Marine Engines<\/li>\n\n\n\n<li>Exhaust Gas Characteristics &amp; Constraints<\/li>\n\n\n\n<li>Exhaust System Architecture (End-to-End)<\/li>\n\n\n\n<li>Turbochargers \u2014 First-Stage Energy Recovery<\/li>\n\n\n\n<li>Exhaust Gas Boilers (Economisers)<\/li>\n\n\n\n<li>Backpressure: The Silent Power Thief<\/li>\n\n\n\n<li>Waste Heat Recovery Technologies (WHR)<\/li>\n\n\n\n<li>Organic Rankine Cycle (ORC) Systems<\/li>\n\n\n\n<li>Power Turbines &amp; Combined Systems<\/li>\n\n\n\n<li>Auxiliary Heat Uses (HVAC, Fuel, Water)<\/li>\n\n\n\n<li>Materials, Corrosion &amp; Acid Dew Point<\/li>\n\n\n\n<li>Failure Modes &amp; Real-World Damage<\/li>\n\n\n\n<li>Regulatory &amp; IMO Drivers<\/li>\n\n\n\n<li>Engineering Takeaways<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">1. Energy Balance of Marine Engines<\/h2>\n\n\n\n<p>A typical large two-stroke engine (e.g. 70\u201390 MW):<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Energy Path<\/th><th>% of Fuel Energy<\/th><\/tr><\/thead><tbody><tr><td>Shaft Power<\/td><td>~48\u201350%<\/td><\/tr><tr><td>Exhaust Gas<\/td><td><strong>25\u201330%<\/strong><\/td><\/tr><tr><td>Scavenge \/ Charge Air<\/td><td>15\u201318%<\/td><\/tr><tr><td>Jacket Water<\/td><td>5\u20137%<\/td><\/tr><tr><td>Lube Oil<\/td><td>2\u20133%<\/td><\/tr><tr><td>Radiation<\/td><td>&lt;1%<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>The exhaust stream is:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>high temperature<\/strong> (300\u2013500 \u00b0C)<\/li>\n\n\n\n<li><strong>high mass flow<\/strong><\/li>\n\n\n\n<li><strong>continuous<\/strong><\/li>\n<\/ul>\n\n\n\n<p>This makes it the <strong>highest-value waste heat source onboard<\/strong>.<br><br><\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"265\" src=\"https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2026\/01\/asset.webp\" alt=\"\" class=\"wp-image-46909\" style=\"width:566px;height:auto\" srcset=\"https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2026\/01\/asset.webp 600w, https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2026\/01\/asset-300x133.webp 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2. Exhaust Gas Characteristics &amp; Constraints<\/h2>\n\n\n\n<p>Typical values downstream of turbocharger:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Temperature: <strong>280\u2013420 \u00b0C<\/strong><\/li>\n\n\n\n<li>Velocity: <strong>35\u201350 m\/s<\/strong><\/li>\n\n\n\n<li>Pressure margin allowed: <strong>&lt;350 mmWC<\/strong><\/li>\n\n\n\n<li>Composition:\n<ul class=\"wp-block-list\">\n<li>CO\u2082<\/li>\n\n\n\n<li>H\u2082O vapour<\/li>\n\n\n\n<li>O\u2082 (residual)<\/li>\n\n\n\n<li>SOx \/ NOx<\/li>\n\n\n\n<li>soot &amp; particulates<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p>The exhaust system must balance:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>energy recovery<\/li>\n\n\n\n<li>pressure loss<\/li>\n\n\n\n<li>corrosion prevention<\/li>\n\n\n\n<li>noise control<\/li>\n<\/ul>\n\n\n\n<p>You cannot optimise one without affecting the others.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3. Exhaust System Architecture (End-to-End)<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Flow Path<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Cylinder exhaust valves<\/li>\n\n\n\n<li>Exhaust receiver (pulse smoothing)<\/li>\n\n\n\n<li>Turbocharger turbine<\/li>\n\n\n\n<li>Exhaust gas boiler \/ economiser<\/li>\n\n\n\n<li>Silencer \/ spark arrester<\/li>\n\n\n\n<li>Uptake &amp; funnel<\/li>\n\n\n\n<li>Atmosphere<\/li>\n<\/ol>\n\n\n\n<p>Every component adds <strong>pressure loss<\/strong> \u2014 and therefore fuel penalty.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4. Turbochargers \u2014 First-Stage Energy Recovery<\/h2>\n\n\n\n<p>Turbochargers already recover:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>15\u201320%<\/strong> of exhaust energy<\/li>\n\n\n\n<li>convert it into scavenge air pressure<\/li>\n<\/ul>\n\n\n\n<p>Key implications:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Any downstream restriction reduces turbine efficiency<\/li>\n\n\n\n<li>Turbocharger matching assumes <strong>specific backpressure<\/strong><\/li>\n\n\n\n<li>Excess pressure causes:\n<ul class=\"wp-block-list\">\n<li>reduced air mass flow<\/li>\n\n\n\n<li>higher exhaust temperature<\/li>\n\n\n\n<li>increased fuel consumption<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p>This is why waste heat recovery <strong>cannot be bolted on blindly<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">5. Exhaust Gas Boilers (Economisers)<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Purpose<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Recover exhaust heat to generate:\n<ul class=\"wp-block-list\">\n<li>steam<\/li>\n\n\n\n<li>hot water<\/li>\n\n\n\n<li>thermal oil<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Typical Uses<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Heating fuel &amp; lube oil<\/li>\n\n\n\n<li>Tank heating<\/li>\n\n\n\n<li>Accommodation heating<\/li>\n\n\n\n<li>Desalination<\/li>\n\n\n\n<li>Steam turbines (where fitted)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Design Types<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Bare tube<\/li>\n\n\n\n<li>Finned tube (most common)<\/li>\n\n\n\n<li>Vertical \/ horizontal gas flow<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Key Limits<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pressure drop across EGB:\n<ul class=\"wp-block-list\">\n<li><strong>\u2264150 mmWC at MCR<\/strong><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Outlet temperature:\n<ul class=\"wp-block-list\">\n<li>Must stay <strong>above acid dew point<\/strong><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">6. Backpressure \u2014 The Silent Power Thief<\/h2>\n\n\n\n<p>Backpressure increases fuel consumption <strong>linearly<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Industry Rules of Thumb<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Exhaust velocity: <strong>35\u201350 m\/s<\/strong><\/li>\n\n\n\n<li>Total backpressure after turbo:\n<ul class=\"wp-block-list\">\n<li>Design: <strong>300 mmWC<\/strong><\/li>\n\n\n\n<li>Absolute max: <strong>350 mmWC<\/strong><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Consequences of Excess Backpressure<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Turbocharger overspeed or surge<\/li>\n\n\n\n<li>High exhaust valve temperatures<\/li>\n\n\n\n<li>Cracked exhaust manifolds<\/li>\n\n\n\n<li>Increased SFOC<\/li>\n\n\n\n<li>Failed WHR ROI<\/li>\n<\/ul>\n\n\n\n<p>This is why WHR systems that look brilliant on paper often fail at sea.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">7. Waste Heat Recovery Technologies (Overview)<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Technology<\/th><th>Heat Grade<\/th><th>Output<\/th><\/tr><\/thead><tbody><tr><td>Exhaust Gas Boiler<\/td><td>Medium\u2013High<\/td><td>Steam \/ Hot Water<\/td><\/tr><tr><td>Power Turbine<\/td><td>High<\/td><td>Electricity<\/td><\/tr><tr><td>Steam Rankine Cycle<\/td><td>Medium\u2013High<\/td><td>Electricity<\/td><\/tr><tr><td>ORC<\/td><td>Medium\u2013Low<\/td><td>Electricity<\/td><\/tr><tr><td>Absorption Cooling<\/td><td>Low<\/td><td>Refrigeration<\/td><\/tr><tr><td>Thermoelectric<\/td><td>Low<\/td><td>Electricity (small)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>No single system is optimal \u2014 <strong>combinations matter<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">8. Organic Rankine Cycle (ORC)<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Why ORC Exists<\/h3>\n\n\n\n<p>Conventional steam cycles struggle below ~300 \u00b0C.<br>ORC uses <strong>organic fluids<\/strong> with lower boiling points.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Advantages<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Works at lower temperatures<\/li>\n\n\n\n<li>Compact<\/li>\n\n\n\n<li>Can use jacket water + exhaust<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Disadvantages<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Working fluid toxicity \/ GWP<\/li>\n\n\n\n<li>Fire risk<\/li>\n\n\n\n<li>Leakage concerns<\/li>\n\n\n\n<li>Limited crew familiarity<\/li>\n<\/ul>\n\n\n\n<p>Typical gains:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>5\u201315% fuel reduction<\/strong> (system-dependent)<\/li>\n<\/ul>\n\n\n\n<p>ORC is excellent \u2014 <strong>when matched to the ship\u2019s duty cycle<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">9. Power Turbines &amp; Combined Systems<\/h2>\n\n\n\n<p>Power turbine systems:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Divert exhaust gas bypassing turbocharger<\/li>\n\n\n\n<li>Drive generator directly<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Pros<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>High efficiency<\/li>\n\n\n\n<li>No working fluid<\/li>\n\n\n\n<li>Mature technology<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Cons<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Only effective above ~60% engine load<\/li>\n\n\n\n<li>Not ideal for slow steaming<\/li>\n<\/ul>\n\n\n\n<p>Best suited for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>container ships<\/li>\n\n\n\n<li>LNG carriers<\/li>\n\n\n\n<li>vessels with stable high load<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">10. Auxiliary Heat Uses (Often Overlooked)<\/h2>\n\n\n\n<p>Recovered heat also supports:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Fuel Systems<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>HFO heating<\/li>\n\n\n\n<li>viscosity control<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Lubrication<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>lube oil pre-heating<\/li>\n\n\n\n<li>purifier heating<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">HVAC<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>accommodation heating<\/li>\n\n\n\n<li>galley hot water<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Freshwater<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>distillation evaporators<\/li>\n\n\n\n<li>absorption desalination<\/li>\n<\/ul>\n\n\n\n<p>Ignoring these loads <strong>wastes recovered energy<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">11. Materials, Corrosion &amp; Acid Dew Point<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Acid Dew Point<\/h3>\n\n\n\n<p>Occurs when:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>sulphur + water condense<\/li>\n\n\n\n<li>typically <strong>&lt;130\u2013150 \u00b0C<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Below this:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>sulphuric acid forms<\/li>\n\n\n\n<li>rapid corrosion follows<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Affected Areas<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>economiser cold ends<\/li>\n\n\n\n<li>uptake drains<\/li>\n\n\n\n<li>idle engines<\/li>\n<\/ul>\n\n\n\n<p>Low-sulphur fuels reduce risk \u2014 but <strong>do not eliminate it<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">12. Failure Modes &amp; Real-World Damage<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Common Failures<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Soot fires in EGB<\/li>\n\n\n\n<li>Tube cracking<\/li>\n\n\n\n<li>Bellows failure<\/li>\n\n\n\n<li>Silencer collapse<\/li>\n\n\n\n<li>Turbocharger blade erosion<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Root Causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Excessive fouling<\/li>\n\n\n\n<li>Poor cleaning routines<\/li>\n\n\n\n<li>Incorrect bypass usage<\/li>\n\n\n\n<li>Ignoring dew point limits<\/li>\n<\/ul>\n\n\n\n<p>Exhaust system failures are <strong>high-energy, high-risk events<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">13. Regulatory &amp; IMO Drivers<\/h2>\n\n\n\n<p>Waste heat recovery supports:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>EEDI \/ EEXI compliance<\/li>\n\n\n\n<li>CII improvement<\/li>\n\n\n\n<li>CO\u2082 reduction<\/li>\n\n\n\n<li>Fuel cost reduction<\/li>\n<\/ul>\n\n\n\n<p>While not mandated directly, WHR is becoming <strong>economically unavoidable<\/strong> under IMO decarbonisation pressure.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">14. Final Engineering Takeaways<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Exhaust gas is <strong>your largest energy loss<\/strong><\/li>\n\n\n\n<li>Backpressure control is non-negotiable<\/li>\n\n\n\n<li>WHR must be <strong>system-engine-route matched<\/strong><\/li>\n\n\n\n<li>Poor exhaust design silently destroys efficiency<\/li>\n\n\n\n<li>The best WHR system is often <strong>several smaller ones combined<\/strong><\/li>\n<\/ul>\n\n\n\n<p>The exhaust system is no longer \u201cplumbing\u201d.<br>It is <strong>a power plant bolted to another power plant<\/strong>.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Why This System Matters More Than Most Engineers Admit A modern marine diesel engine is thermodynamically brutal: The exhaust system is therefore not just gas piping.It is: Poor exhaust system design quietly increases fuel consumption, destroys turbochargers, cracks boilers, and violates IMO rules \u2014 often without obvious alarms. This article treats the exhaust system as [&hellip;]<\/p>\n","protected":false},"author":199,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"fifu_image_url":"","fifu_image_alt":"","c2c-post-author-ip":"","footnotes":""},"categories":[43,10,7,8],"tags":[],"class_list":["post-46907","post","type-post","status-publish","format-standard","hentry","category-aux-machinery","category-bridge","category-engine-room","category-mechanical"],"acf":[],"_links":{"self":[{"href":"https:\/\/maritimehub.co.uk\/?rest_route=\/wp\/v2\/posts\/46907","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/maritimehub.co.uk\/?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/maritimehub.co.uk\/?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/maritimehub.co.uk\/?rest_route=\/wp\/v2\/users\/199"}],"replies":[{"embeddable":true,"href":"https:\/\/maritimehub.co.uk\/?rest_route=%2Fwp%2Fv2%2Fcomments&post=46907"}],"version-history":[{"count":2,"href":"https:\/\/maritimehub.co.uk\/?rest_route=\/wp\/v2\/posts\/46907\/revisions"}],"predecessor-version":[{"id":46910,"href":"https:\/\/maritimehub.co.uk\/?rest_route=\/wp\/v2\/posts\/46907\/revisions\/46910"}],"wp:attachment":[{"href":"https:\/\/maritimehub.co.uk\/?rest_route=%2Fwp%2Fv2%2Fmedia&parent=46907"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/maritimehub.co.uk\/?rest_route=%2Fwp%2Fv2%2Fcategories&post=46907"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/maritimehub.co.uk\/?rest_route=%2Fwp%2Fv2%2Ftags&post=46907"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}