Steam and cooling plant for the five-press fleet; utilities re-based

New page docs/steam-cooling.html (site /demos/steam-cooling/): the
utility plant as a clickable process diagram. Steam side: raw water,
softener and dosing, feed tank with heat-pump feedwater recovery, feed
pumps, a bank of two 500 kg/h boilers (third for N+1 as an option),
separator and metering, optional accumulator, blowdown, the 10 bar
header with a valved, metered branch and trap per press, drip legs and
condensate return. Cooling side: Newbilt's press outlets are open (max.
2 bar), so returns drain to a warm tank, pass the heat pump, an optional
dry cooler and a plate heat exchanger to a cold buffer tank, and VFD
pumps feed the 20 to 25 C header at ~10 bar to every press, the
extruders and the central hydraulic oil cooler; the chiller loop
(three 250 kW air-cooled modules at 40 C ambient, fourth as option) stays
closed and clean. Galvanics cooling (12 to 20 C) is a separate circuit.
Operating cases (launch, Duplex system 1, five presses, one module down)
show demand against installed capacity; design basis with sources,
equipment schedule, RFQ questions. Static SVG, no per-frame work.

Design basis at Newbilt's per-machine figures: steam 750 to 900 kg/h,
cooling 652.5 kW (625 presses, 15 extruders, 12.5 hydraulics), 305 to
540 l/min circulating. Also found: Newbilt's 53 l/min at ~60 C out is
~140 kW, above its 125 kW peak; listed as a re-quote question.

Re-based in the same commit:
- scale.md: electrical table (chiller bank ~210 to 325 kW electrical,
  plant peak ~430 to 700 kW, ~950 to 1,330 kW with electric steam),
  grid 800 to 1,000 kVA (1,250 to 1,600 with electric steam, Schedule
  4 past 1,000 kW), tariff 4.5M to 6.8M THB/yr, battery ~1 h of chiller
  peak, boiler and chiller banks, biomass up to ~550 t/yr at 1.5 M
  records, utilities money line.
- sustainability.md, biomass.md: same figures; electric steam 5.2M to
  6.0M THB/yr mature, 1.6M to 1.8M early; fuel saving 4.0M to 5.4M.
- utilities CSV: boiler bank, chiller bank with HX and tanks, softener
  and loop treatment re-sized; baseline 23.98M-41.63M -> 30.07M-51.33M.
- total-investment.md: re-size as an added-scope row (+185k / +294k
  USD); headline 4.7M to 8.9M unchanged until the investment re-base.
- pressing-line, equipment-suppliers, facility-security, fleet
  calculator (boiler 1000 kg/h, chiller 750 kW), plant page detail
  texts; README, landing page, build.sh.

docs/plant-operation.html

@@ -949,13 +949,13 @@ const DETAILS={
  finish:{t:'7b · Finishing',w:'Inner sleeve and, once assembled, the shrink wrapper. The labels are already on: they were pressed in.',c:['Inner sleeve scuff check per lot','Shrink wrap sampled'],f:['2 to 3 days per order (production timeline)']},
  pack:{t:'8 · Packaging and assembly',w:'The runout matrix code is scanned against the jacket barcode, so the wrong record in the right jacket is caught every time.',c:['Matrix code vs jacket barcode on every unit','Barcode verification'],f:['Packaging and finished goods ~300 to 500 m²']},
  ship:{t:'9 · Fulfillment',w:'Bulk pallets, or per-parcel dropship for the label; carrier tracking joins the traceability record. Test pressings leave here for the artists.',c:['Consignment vs bill of materials','Tracking per shipment or per end customer'],f:['Quoted lead time 7 to 9 weeks mature, 2 to 3 weeks for a repress']},
- boiler:{t:'Steam boiler',w:'Saturated steam at 10 bar / 180 °C heats the moulds; each press draws ~1.3 kg per cycle. Four presses need 600 to 720 kg/h at Newbilt\'s 150 to 180 kg/h per press, so the boiler is shown at 800 kg/h. That is an estimate: scale.md sizes the boiler at 400 kg/h, which covers the Duplex alone. Below 9.5 bar the presses hold in STEAM (Steam dip button).',c:['Pressure held between 9.5 and 10.5 bar at the press','Feedwater treatment, condensate return'],f:['Fuel decision open: biomass, LPG or electric','Detached boiler hall with a 14 m flue','scale.md\'s 400 kg/h is the Duplex figure; to be re-based for the four-press fleet']},
- chiller:{t:'Process cooling',w:'Cooling water sets the vinyl after the steam phase. The four presses here can need up to 125 kW each, so the chiller is shown at 500 kW (estimate; scale.md\'s 250 kW is the Duplex figure). If the supply water runs warm, the Classics stretch their cooling and their cycle. The galvanics plating units take a small branch at 12 to 20 °C.',c:['Supply 20 to 25 °C, closed loop','Up to 100 l/min per press, ~53 l/min average (site requirements)'],f:['~80 to 125 kW electrical per 250 kW of cooling','PDPU coil: 10 L/min at 12 to 20 °C (2024 flyer)']},
+ boiler:{t:'Steam boiler',w:'Saturated steam at 10 bar / 180 °C heats the moulds; each press draws ~1.3 kg per cycle. Four presses need 600 to 720 kg/h at Newbilt\'s 150 to 180 kg/h per press, so the boiler is shown at 800 kg/h. That is an estimate for this four-press page; the five-press plan (scale.md, steam-cooling.html) is a bank of two 500 kg/h modules. Below 9.5 bar the presses hold in STEAM (Steam dip button).',c:['Pressure held between 9.5 and 10.5 bar at the press','Feedwater treatment, condensate return'],f:['Fuel decision open: biomass, LPG or electric','Detached boiler hall with a 14 m flue','Five-press plan: 750 to 900 kg/h on a 2 × 500 kg/h boiler bank (steam-cooling.html)']},
+ chiller:{t:'Process cooling',w:'Cooling water sets the vinyl after the steam phase. The four presses here can need up to 125 kW each, so the chiller is shown at 500 kW (estimate for this four-press page; the five-press plan is a 3 × 250 kW chiller bank, steam-cooling.html). If the supply water runs warm, the Classics stretch their cooling and their cycle. The galvanics plating units take a small branch at 12 to 20 °C.',c:['Supply 20 to 25 °C, closed loop','Up to 100 l/min per press, ~53 l/min average (site requirements)'],f:['~80 to 125 kW electrical per 250 kW of cooling','PDPU coil: 10 L/min at 12 to 20 °C (2024 flyer)']},
  comp:{t:'Compressed air',w:'Dry, filtered air for the press and extruder actuators, the Sibert machines and the silvering unit.',c:['Dew point max 3 °C, impurities max 5 µm'],f:['14 m³/h for a Duplex system (site requirements)','Sibert: 6 to 8 bar, 3.1 to 4.5 L/s per machine in use; PASU 6 bar']},
  hyd:{t:'Hydraulic aggregate (Duplex)',w:'One aggregate supplies ~150 t to both Duplex presses at 180 bar from a gas-loaded accumulator. A larger central supply shared by several systems is possible (Duplex flyer); how the Classics are supplied is a re-quote question.',c:['Oil temperature and pressure logged'],f:['200 l HLP 46, 15 kVA, 12 kW average, 600 kg (site requirements)']},
  diro:{t:'RO / DI water',w:'Plating rinses need deionised water: the PMPB bench has a DI connection and the silvering chemistry is made up with it.',c:['Conductivity logged'],f:['The RO skid in the utilities CSV is an option row sized for boiler feed, not for this (galvanics.md)','0.2 m³/h make-up here (estimate)']},
  zld:{t:'Water treatment, zero discharge',w:'Galvanics rinse water and the VSF\'s nickel-bearing loop water go through closed-loop treatment and metal recovery with an evaporator; nothing goes to the drain. Neither Pheenix nor Digital Matrix supplies this; it is a separate vendor.',c:['Rinse conductivity, evaporator state'],f:['Zero contaminated water commitment (sustainability.md)','USD 90k to 240k (total investment)']},
- energy:{t:'Energy',w:'247 kWp of roof PV, a 271 kWh battery for peak shaving and ride-through, and a medium-voltage PEA connection. Solar follows the clock; the battery covers the evening.',c:['Plant peak 300 to 450 kW without an electric boiler'],f:['Galvanics ~27 kVA connected per line, far less drawn (galvanics.md)','PV covers roughly 28 to 45 % of consumption without electric steam']},
+ energy:{t:'Energy',w:'247 kWp of roof PV, a 271 kWh battery for ride-through, and a medium-voltage PEA connection. Solar follows the clock; the battery covers the evening.',c:['Plant peak ~430 to 700 kW without an electric boiler (five-press plan, scale.md)'],f:['Galvanics ~27 kVA connected per line, far less drawn (galvanics.md)','PV covers roughly 28 to 45 % of consumption without electric steam']},
  trace:{t:'Traceability',w:'Every step logs at the source: press and rectifier PLCs, the lab, the XRF, the vision station; manual steps check in. Append-only, kept for the life of the customer relationship.',c:['Record key: stamper + press + cycle timestamp + side','Every part knows its parents: stamper, mother, father, lacquer'],f:['The part of the plan the industry responded to at Making Vinyl Europe 2026']},
  hvac:{t:'Plant HVAC',w:'The press hall at 20 to 26 °C and 35 to 60 % RH; galvanics, archive and audio rooms in their own zones, logged on the production timeline.',c:['T, RH and PM per zone'],f:['~100 to 200 kW peak (estimate)']},
  exh:{t:'Galvanics extraction',w:'Every tank unit is extracted (Ø63 mm per plating unit, Ø125 mm at 150 m³/h on the silvering unit) through a scrubber. The interlock is hard-wired: no extraction, no plating.',c:['Fan status logged, interlock hard-wired'],f:['Facility security: fume-extraction interlocks']},