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The AI maintains the pool temperature, the room humidity and the water quality within the setpoint range with minimum power, performs a backwash on demand instead of a timed cycle, uses waste heat via heat recovery and reduces parameters at night — before the pool control signals just a simple limit value.</p> </div> </section>  <div class="wiz-wrap"> <div class="wiz"> <div class="wiz-steps" id="steps"> <div class="st on" data-s="1" onclick="go(1)"><span class="no">1</span><span class="lbl"> Comprendre </span></div> <div class="st" data-s="2" onclick="go(2)"><span class="no">2</span><span class="lbl">View live</span></div> <div class="st" data-s="3" onclick="go(3)"><span class="no">3</span><span class="lbl">What the AI does</span></div> <div class="st" data-s="4" onclick="go(4)"><span class="no">✓</span><span class="lbl">Your benefit</span></div> </div> <div class="wiz-body" id="body"></div> </div> <div class="mini-flow"> <span class="mf"> Climat </span><span class="ar">→</span> <span class="mf">Domestic hot water</span><span class="ar">→</span> <span class="mf here">Pool & Spa</span><span class="ar">→</span> <a class="mf next" href="/glaesern/hotel/wizards/kueche/" style="text-decoration:none"> Cuisine </a><span class="ar">→</span> <span class="mf"> Blanchisserie </span> </div> </div>  <section style="max-width:1000px;margin:0 auto;padding:.5rem 20px 1.5rem"><div style="background:linear-gradient(135deg,#f0fbf9,#fff);border:1px solid var(--accent-ultra,#fdba74);border-radius:16px;padding:1.2rem 1.4rem"><div style="font-size:.76rem;letter-spacing:.1em;text-transform:uppercase;color:var(--accent,#ea580c);font-weight:800;margin-bottom:.7rem">Thematically related</div><div style="display:flex;flex-wrap:wrap;gap:.55rem"><a href="https://stromfee.energy/weather/extremes.html" style="display:inline-flex;align-items:center;gap:.35rem;font-size:.9rem;font-weight:700;padding:.5rem .9rem;border-radius:999px;background:#fff;border:1px solid var(--accent-ultra,#fdba74);color:var(--accent,#ea580c);text-decoration:none">🌡️ Global temperature extremes (hottest/coldest cities) →</a><a href="https://stromfee.us/pool.html" style="display:inline-flex;align-items:center;gap:.35rem;font-size:.9rem;font-weight:700;padding:.5rem .9rem;border-radius:999px;background:#fff;border:1px solid var(--accent-ultra,#fdba74);color:var(--accent,#ea580c);text-decoration:none">Transparent pool (reference) →</a><a href="https://stromfee.ai/loesungen/shelly-energiemessung.html" style="display:inline-flex;align-items:center;gap:.35rem;font-size:.9rem;font-weight:700;padding:.5rem .9rem;border-radius:999px;background:#fff;border:1px solid var(--accent-ultra,#fdba74);color:var(--accent,#ea580c);text-decoration:none">Shelly energy measurement →</a></div></div></section>   <section style="max-width:1000px;margin:0 auto;padding:1.5rem 20px"> <h2 style="font-size:1.35rem;font-weight:800;margin-bottom:6px">One level lower — 19 components</h2> <p style="color:#64748b;font-size:.95rem;margin-bottom:14px">This station explains the lot.</p> <div style="display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:10px"><a href="/glaesern/hotel/" style="display:block;background:#fff;border:1px solid #fff7ed;border-radius:12px;padding:12px 14px;text-decoration:none;color:#0f172a;font-weight:600;font-size:.93rem">HB Longitudinal pool</a><a href="/glaesern/hotel/" style="display:block;background:#fff;border:1px solid #fff7ed;border-radius:12px;padding:12px 14px;text-decoration:none;color:#0f172a;font-weight:600;font-size:.93rem">HB Experience pool</a><a href="/glaesern/hotel/" style="display:block;background:#fff;border:1px solid #fff7ed;border-radius:12px;padding:12px 14px;text-decoration:none;color:#0f172a;font-weight:600;font-size:.93rem">HB Wading pool</a><a href="/glaesern/hotel/" style="display:block;background:#fff;border:1px solid #fff7ed;border-radius:12px;padding:12px 14px;text-decoration:none;color:#0f172a;font-weight:600;font-size:.93rem"> Glissade </a><a href="/glaesern/hotel/" style="display:block;background:#fff;border:1px solid #fff7ed;border-radius:12px;padding:12px 14px;text-decoration:none;color:#0f172a;font-weight:600;font-size:.93rem">HB Stormwater tank</a><a href="/glaesern/hotel/" style="display:block;background:#fff;border:1px solid #fff7ed;border-radius:12px;padding:12px 14px;text-decoration:none;color:#0f172a;font-weight:600;font-size:.93rem">HB Circulation</a><a href="/glaesern/hotel/" style="display:block;background:#fff;border:1px solid #fff7ed;border-radius:12px;padding:12px 14px;text-decoration:none;color:#0f172a;font-weight:600;font-size:.93rem">HB Sand filter</a><a href="/glaesern/hotel/" style="display:block;background:#fff;border:1px solid #fff7ed;border-radius:12px;padding:12px 14px;text-decoration:none;color:#0f172a;font-weight:600;font-size:.93rem">HB Heat exchanger</a><a href="/glaesern/hotel/" style="display:block;background:#fff;border:1px solid #fff7ed;border-radius:12px;padding:12px 14px;text-decoration:none;color:#0f172a;font-weight:600;font-size:.93rem">HB Backwash</a><a href="/glaesern/hotel/" style="display:block;background:#fff;border:1px solid #fff7ed;border-radius:12px;padding:12px 14px;text-decoration:none;color:#0f172a;font-weight:600;font-size:.93rem">FB Wave pool</a><a href="/glaesern/hotel/" style="display:block;background:#fff;border:1px solid #fff7ed;border-radius:12px;padding:12px 14px;text-decoration:none;color:#0f172a;font-weight:600;font-size:.93rem">FB Diving pool</a><a href="/glaesern/hotel/" style="display:block;background:#fff;border:1px solid #fff7ed;border-radius:12px;padding:12px 14px;text-decoration:none;color:#0f172a;font-weight:600;font-size:.93rem">FB Non-wave pool</a><a href="/glaesern/hotel/" style="display:block;background:#fff;border:1px solid #fff7ed;border-radius:12px;padding:12px 14px;text-decoration:none;color:#0f172a;font-weight:600;font-size:.93rem">FB Wading pool</a><a href="/glaesern/hotel/" style="display:block;background:#fff;border:1px solid #fff7ed;border-radius:12px;padding:12px 14px;text-decoration:none;color:#0f172a;font-weight:600;font-size:.93rem">FB Stormwater tank</a><a href="/glaesern/hotel/" style="display:block;background:#fff;border:1px solid #fff7ed;border-radius:12px;padding:12px 14px;text-decoration:none;color:#0f172a;font-weight:600;font-size:.93rem">FB Circulation</a><a href="/glaesern/hotel/" style="display:block;background:#fff;border:1px solid #fff7ed;border-radius:12px;padding:12px 14px;text-decoration:none;color:#0f172a;font-weight:600;font-size:.93rem">FB Sand filter</a><a href="/glaesern/hotel/" style="display:block;background:#fff;border:1px solid #fff7ed;border-radius:12px;padding:12px 14px;text-decoration:none;color:#0f172a;font-weight:600;font-size:.93rem">FB Heat exchanger</a><a href="/glaesern/hotel/" style="display:block;background:#fff;border:1px solid #fff7ed;border-radius:12px;padding:12px 14px;text-decoration:none;color:#0f172a;font-weight:600;font-size:.93rem">FB backwash</a><a href="/glaesern/hotel/" style="display:block;background:#fff;border:1px solid #fff7ed;border-radius:12px;padding:12px 14px;text-decoration:none;color:#0f172a;font-weight:600;font-size:.93rem">Filter pumps</a></div> <p style="margin-top:12px;font-size:.88rem"><a href="/glaesern/hotel/" style="color:#ea580c;font-weight:600">All components at a glance →</a></p> </section> <section class="cta-band" id="kontakt"> <div class="s-inner reveal"> <h2>Would you like to see your hotel in an equally transparent way?</h2> <p>We model your hotel's energy technology in real-time — air conditioning, hot water, swimming pool, kitchen, laundry, peak loads. The first energy audit is free.</p> <div class="cta-row" style="justify-content:center;margin-top:1.6rem;flex-wrap:wrap"> <a href="https://wa.me/491711988926" target="_blank" rel="noopener" class="btn btn-primary" style="background:#25D366;border-color:#25D366">Write via WhatsApp →</a> <a href="mailto:info@stromfee.ai?subject=Gl%C3%A4sernes%20Hotel%20%E2%80%94%20HVAC" class="btn btn-ghost">Write to Vision-AI</a> <a href="tel:+4952234921030" class="btn btn-ghost">+49 5223 4921030</a> </div> </div> </section> <script type="application/ld+json">{"@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [{"@type": "Question", "name": "Why is the swimming pool the largest consumer of energy in a wellness hotel?", "acceptedAnswer": {"@type": "Answer", "text": "Pool water is circulated, filtered and heated to 28–32 °C 24/7, the swimming hall is constantly dehumidified and heated. Evaporation is the largest heat loss — together, Pool & Spa is often the largest individual item in the energy consumption of a wellness hotel."}}, {"@type": "Question", "name": "What are the advantages of a pool cover and a night reduction?", "acceptedAnswer": {"@type": "Answer", "text": "A pool cover outside of operating hours slows down evaporation — the largest heat loss. Combined with a night reduction of water temperature and circulation, heating and pumping costs decrease significantly without guests noticing during the day."}}, {"@type": "Question", "name": "How often should a sand filter be backwashed?", "acceptedAnswer": {"@type": "Answer", "text": "Not by the clock, but by filter pressure: if the differential pressure rises above the setpoint, the filter is clogged and must be backwashed. Pressure-controlled backwashing saves water, chemicals, and heated pool water compared to fixed time control."}}, {"@type": "Question", "name": "What is heat recovery in an indoor swimming pool?", "acceptedAnswer": {"@type": "Answer", "text": "The moist, warm exhaust air of the swimming hall contains a lot of energy. A heat exchanger transfers this to the fresh supply air (and partly to the pool water) — at a reference system around 63 % heat recovery, so significantly less reheating is required."}}, {"@type": "Question", "name": "How does Stromfee connect existing pool technology?", "acceptedAnswer": {"@type": "Answer", "text": "Read-only via existing interfaces: Pool controls such as Bayrol or Hayward provide pool temperature, pH and Redox via Modbus, the circulation pump (e.g. Grundfos MAGNA3) provides speed, power and energy, the sauna via KNX/Modbus. No intervention in the control system."}}, {"@type": "Question", "name": "What does the AI detect that the pool control doesn't see?", "acceptedAnswer": {"@type": "Answer", "text": "The control only reports limit values. The AI detects gradually increasing evaporation (cover forgotten), unnecessary circulation outside of operating hours and a clogging filter from the differential pressure — and coordinates pool heating, dehumidification and PV."}}]}</script> <div id="stationsNav"></div> <section class="faq-wrap" id="faq"> <h2>Frequently Asked Questions</h2> <details class="faq-item"><summary>Why is the swimming pool the largest consumer of energy in a wellness hotel?</summary><div class="faq-a">The pool water is circulated, filtered and heated to 28–32 °C 24h/24, the swimming hall is constantly dehumidified and heated.<b> Évaporation </b>is the largest heat loss — often the most significant individual item together.</div></details> <details class="faq-item"><summary>What are the advantages of a pool cover and a night reduction?</summary><div class="faq-a">The cover slows down the<b> Évaporation </b>outside of opening hours; with the night reduction of temperature and circulation, heating and pumping costs decrease considerably — without being noticed during the day.</div></details> <details class="faq-item"><summary>How often should a sand filter be backwashed?</summary><div class="faq-a">After the<b>Filter pressure</b>, not by the clock: if the differential pressure exceeds the setpoint, backwashing is triggered. Pressure control saves water, chemicals and heated pool water.</div></details> <details class="faq-item"><summary>What is heat recovery in an indoor swimming pool?</summary><div class="faq-a">A heat exchanger transfers energy from the moist, warm exhaust air to the incoming air (and partly to the pool water) — reference approximately<b>63 %</b>Heat recovery.</div></details> <details class="faq-item"><summary>How does Stromfee connect existing pool technology?</summary><div class="faq-a">Read-only: Bayrol/Hayward via<b> Modbus </b>(Pool temp., pH, Redox), circulation pump Grundfos MAGNA3 (speed/power/energy), sauna via KNX/Modbus. No intervention in the setting.</div></details> <details class="faq-item"><summary>What does the AI detect that the pool control doesn't see?</summary><div class="faq-a"> Croissant <b> Évaporation </b>, unnecessary circulation outside of opening hours and a clogging filter (differential pressure) — and synchronises pool heating, dehumidification and photovoltaics.</div></details> </section>  <footer class="footer"> <div class="footer-inner"> <div>© 2026 Vision-AI GbR ·<strong>Dirk Husterklatte</strong>Energy systems in hotels and biogas/CHP plants</div> <ul> <li><a href="https://stromfee.ai"> stromfee.ai </a></li> <li><a href="/glaesern/hotel/"> Hotel-Specials </a></li> <li><a href="https://stromfee.ai/loesungen/"> Lösungen </a></li> <li><a href="/impressum.html">Live data</a></li> <li><a href="/datenschutz.html">Data protection</a></li> </ul> </div> </footer> <div class="fab-sos"> <a href="https://wa.me/491711988926" target="_blank" rel="noopener" class="fab-wa" aria-label="WhatsApp"> <svg viewBox="0 0 24 24" fill="currentColor" aria-hidden="true"><path d="M12.04 2c-5.46 0-9.91 4.45-9.91 9.91 0 1.75.46 3.45 1.32 4.95L2 22l5.25-1.38c1.45.79 3.08 1.21 4.79 1.21 5.46 0 9.91-4.45 9.91-9.91S17.5 2 12.04 2zm5.8 14.16c-.24.68-1.4 1.3-1.93 1.38-.49.07-1.13.1-1.82-.11-.42-.13-.96-.31-1.65-.61-2.9-1.25-4.8-4.17-4.94-4.36-.15-.19-1.19-1.58-1.19-3.01 0-1.43.75-2.14 1.02-2.43.27-.29.58-.36.78-.36.19 0 .39 0 .56.01.18.01.42-.07.66.5.24.59.82 2.04.89 2.19.07.15.12.32.02.51-.1.19-.15.31-.29.48-.15.17-.31.38-.44.51-.15.15-.3.31-.13.6.17.29.76 1.25 1.63 2.03 1.12 1 2.07 1.31 2.36 1.46.29.15.46.12.63-.07.17-.19.73-.85.92-1.14.19-.29.39-.24.66-.15.27.1 1.71.81 2 .96.29.15.49.22.56.34.07.12.07.69-.17 1.37z"/></svg> <span> WhatsApp </span> </a> </div>  <script type="application/json" id="dgm2000-kernfilm-marker">{"pipeline": "hotel-kernfilm", "station": 3, "slug": "pool-spa", "title": "Pool & Spa", "url": "/glaesern/hotel/anlage/pool-spa.html", "poster": "/glaesern/hotel/tiles/tile-anlage-pool-spa.jpg", "record": {"viewport": "9:16", "scroll": "slow", "settle_ms": 1400}, "segments": [{"step": 1, "trigger": "#steps .st[data-s=\"1\"]", "expect": "Technik", "beat": "Pool & Spa: Circulation, filter, pool heating and hall dehumidification with heat recovery."}, {"step": 2, "trigger": "#steps .st[data-s=\"2\"]", "expect": "Right now", "beat": "Live: Pool temperature, hall humidity, circulation flow rate and filter pressure."}, {"step": 3, "trigger": "#steps .st[data-s=\"3\"]", "expect": "The AI", "beat": "The AI manages pressure-controlled operation, reduces at night and uses waste heat."}, {"step": 4, "trigger": "#steps .st[data-s=\"4\"]", "expect": "Why it matters", "beat": "Payoff: same water quality, significantly less energy."}], "payoff": "Same water quality and comfort, significantly less energy."}</script> <script src="/hotel-specials/anlage/spark.js"></script> <script> var TILE='/glaesern/hotel/tiles/'; var BWE='/hotel-specials/anlage/api/bwe.json'; var state={step:1}; var live=null, liveErr=false; function num(x,d){ if(x==null||isNaN(x)) return '–'; d=(d==null?0:d);'de-DE',{minimumFractionDigits:d,maximumFractionDigits:d}); }'<li><span class="b">✓</span><span>'+t+'</span></li>'; }"step-grid">'+"step-img" src="'+TILE+'tile-anlage-pool-spa.jpg" alt="Technique de piscine : circulation, filtre à sable et chauffage du bassin d’une salle de piscine">'+"step-kicker">Step 1 · Understand</p>'+"step-h">Pool & Spa — the technology behind</h2>'+"step-p">Four circuits work together: <b>circulation</b> (pump regulated by Δp, sand filter, <b>backwash</b> controlled by pressure), <b>pool heating</b> (heat exchanger, maintains 28–32 °C), <b>hall ventilation with dehumidification</b> (controlled by dew point, against structural damage) and <b>water treatment</b> (pH, Redox/ORP, chlorine dosing).</p>'+"step-p">The largest loss is <b>evaporation</b> — which is why pool covers and night reduction are the most effective levers. The <b>heat recovery</b> of humid, warm exhaust air reaches approximately <b>63 %</b> (reference installation); the pool itself acts as a large <b>thermal reservoir</b>.</p>'+"margin-top:1.4rem">'+"step-kicker">Recorded with precision</p>'+"chk" style="columns:2;column-gap:1.6rem">'+"benefit" style="margin-top:1.3rem">'+"font-size:1.08rem">Thus we connect your pool technology — in read-only mode</h3>'+"margin:0 0 .3rem">We read the <b>existing</b> control system without modifying settings (read services only):</p>'+"chk" style="margin-top:.4rem">'+"step-p">Live values are not available at the moment. Please try again in a moment.</p>'; }"step-p">Loading live values…</p>'; }"live-head">'+"live-dot'+(laeuft?'':' idle')+'"></span>'+ '<span class="live-status">Circulation'+(laeuft?'in progress':'in night mode')+'</span>'+ '<span class="live-sub">· anonymous reference pool · values from a reference system</span>'+ '</div>'+ (window.Spark?Spark.toolbarHTML():'')+ '<div class="kpis">'+'Beckentemperatur', num(becken,1),'°C', 'pool_beckentemp')+ kpi('Hallentemperatur', num(halle,1), '°C', 'pool_hallentemp')+ kpi('Hallenfeuchte', num(feuchte,0), '%', 'pool_feuchte')+ kpi('Circulation', num(umw,1), 'm³/h', 'pool_umwaelzung')+ kpi('Filter pressure', num(druck,2), 'bar', 'pool_filterdruck')+ '</div>'+ '<p class="step-p" style="margin-top:1.1rem;font-size:.92rem;color:var(--text-3)">Anonymised measured values from a reference pool installation. The fact that circulation is reduced at night is normal — this is precisely where the savings potential lies.</p>'; } return '<p class="step-kicker">Step 2 · View live</p>\''+ '<h2 class="step-h">Pool & Spa — direct</h2>'+ inner + nav(2); } function kpi(l,val,u,sig,el){ return '<div class="kpi"><div class="kl">'+l+'</div><div class="kv">'+val+ (u?'<span class="ku">'+u+'</span>':'')+'</div>'+(sig?'<div class="spark" data-sig="'+sig+'"'+(el?' data-el"1"':'')+'></div>':'')+'</div>'; }"step-grid">'+"step-kicker">Step 3 · What the AI does</p>'+"step-h">AI monitors Pool & Spa</h2>'+"chk">'+"step-img" src="'+TILE+'tile-anlage-pool-spa-ki.jpg" alt="Technique de piscine surveillée par IA avec affichage en direct de la température du bassin et de la pression du filtre">'+"szenSlot"></div>'+"margin-top:1.4rem;background:linear-gradient(135deg,#0d2b2a,#0a1c1b);border-radius:18px;padding:1.35rem 1.45rem;color:#fff">'+"font-size:.76rem;letter-spacing:.12em;text-transform:uppercase;color:var(--accent-bright);font-weight:800;margin-bottom:.5rem">And where this AI runs</div>'+"margin:0 0 .55rem;font-size:1.22rem;font-weight:800;color:#fff">At your premises, in your establishment — offline. Your own hotel LLM.</h3>'+"margin:0 0 .5rem;color:rgba(255,255,255,.85);line-height:1.62">Booking and revenue management AI (Oracle OPERA Cloud, Mews, IDeaS) operates without exception in the <b>Cloud</b> — even energy AI is generally operated in "as a Service" mode remotely. At Stromfee, the AI runs <b>locally on your hardware</b>: no bytes of operational or customer data leave the building.</p>'+"list-style:none;padding:0;margin:.4rem 0 0;display:flex;flex-direction:column;gap:.5rem">'+"color:rgba(255,255,255,.9);line-height:1.5"><span style="color:var(--accent-bright);font-weight:800">✓</span> <b>Your own hotel LLM</b> — open models on a GPU in your network (Ollama), not at a provider.</li>'+"color:rgba(255,255,255,.9);line-height:1.5"><span style="color:var(--accent-bright);font-weight:800">✓</span> <b>Data sovereignty:</b> Processing remains in-house, not in external clouds.</li>'+"color:rgba(255,255,255,.9);line-height:1.5"><span style="color:var(--accent-bright);font-weight:800">✓</span> The combination <b>Energy AI + on-premise</b> is not available elsewhere on the market.</li>'+"https://stromfee.ai/loesungen/ki-ohne-datenabfluss.html" style="display:inline-block;margin-top:.7rem;color:var(--accent-bright);font-weight:700;text-decoration:none">→ AI without data leakage</a>'+"sps-sps">on a schedule</span>. The AI flushes <1>pressure-controlled</span> — only when the filter needs it. Saves water and heated pool water.'},"sps-ki">druckgesteuert</span> — nur wenn der Filter es braucht. Spart Wasser und geheiztes Beckenwasser.'}, {img:SPS_IMG+'2.jpg', t:'Die Steuerung hält das Becken <span class="sps-sps">at temperature 24/7</span>. The AI reduces it at night and controls the <b>cover</b> — against evaporation, the largest loss.'},"sps-sps">rigidly</span>. The AI operates it <b>demand-driven</b> before peak usage — humidity under control, less energy.'},"sps-sps">at full load</span>. The AI operates it <b>demand-driven</b> and uses PV hours — the circulation rate is still correct.'},"sps-sps">around the clock</span>. The AI links it to occupancy — warm when guests are there.'},"sps-sps">status code</span>. The AI explains in <span class="sps-ki">plain text</span>: "Filter pressure high → backwash required" oder „Hallenfeuchte über Taupunkt → Entfeuchtung prüfen".'}"step-kicker">Step 4 · Its benefits</p>'+"step-h">Why it is important</h2>'+"benefit"><h3>Same water quality and comfort — with significantly less energy.</h3>'+"cta-row2">'+"https://wa.me/491711988926" target="_blank" rel="noopener" class="wiz-next" style="background:#25D366;box-shadow:0 10px 26px rgba(37,211,102,.28)">Make hotel gläsern →</a>'+"https://stromfee.ai/loesungen/" class="wiz-back" style="align-self:center">→ Stromfee solutions</a>'+"next-stage" href="/glaesern/hotel/wizards/kueche/">'+ '<div><b>Nächste Station:</b> Küche & Gastronomie — Kälte, Abwärme und Großverbraucher.</div>'+ '<span class="arw">→</span>'+ '</a>'+ '<div style="text-align:center;margin-top:1.3rem"><button class="wiz-back" onclick="go(1)">↻ Von vorn</button></div>'; } function nav(s){ var back = s>1 ? 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