₱120,000 a month back in your pocket.From day one.
For Philippine textile dyeing & finishing plants and chemical processors. The hot effluent you pour down the drain is a heat bank — Karnot recovers it back into your incoming process water and your dye baths — one electricity bill, no boiler, financed by the bank, paid for out of the saving. Recover the dye-bath heat. Retire the boiler.
Your hot effluent is a heat bank. You pour it down the drain.
Every dyehouse runs two opposing thermal jobs at the same time: dye baths and finishing run at 60–90 °C and the spent dye liquor leaves the machine hot and is dumped to drain, while incoming process water arrives cold and must be heated all over again. Today those two jobs run on two separate bills — the boiler to heat the incoming water from scratch, and the heat in the effluent simply flushed away.
The hot effluent is your biggest wasted asset — and you flush it every batch
Spent dye liquor and rinse water leave the machine at 50–80 °C and go straight to the drain — thousands of litres a shift carrying recoverable heat with them. Meanwhile incoming process water comes in cold and the boiler reheats it from scratch. A Karnot effluent heat-recovery exchanger feeds the heat pump, which lifts that recovered heat back to dye-bath temperature — the heat you dumped becomes the heat you buy back. Karnot also recovers the process-chiller condenser heat into the same load.
The boiler is your biggest controllable cost — and it's mostly optional
Dye baths (60–90 °C), scouring, finishing and process hot water burn roughly ₱2.4M of LPG / bunker a year on a mid-size dyehouse. The high-temperature iHEAT R290 delivers up to ~90 °C from recovered effluent heat, covering cotton / reactive dyeing, finishing, scouring and hot water — the bulk of the load. High-temp polyester (130 °C, pressurised) keeps a small top-up; everything else, the boiler is retired, not replaced. No flame, no flue, no insurance loading.
Recover the dye-bath heat. Lift it. Retire the boiler.
A heat pump moves heat rather than creating it. When iCOOL handles your process cooling and the effluent exchanger captures the heat in your spent dye liquor, that heat is lifted to 75–90 °C — exactly what the dye baths and process hot water need. Your dye machines and finishing lines stay — we replace the utilities around the process line, not the process line.
iCOOL CO₂
Process cooling and condenser duty at COP 4.2. The gas cooler delivers 75–90 °C recovery from the same compression cycle — straight into the dye-bath and hot-water load. A1 safety class, non-toxic, non-flammable.
iHEAT R290
Dye-bath, finishing and hot-water duty. Drop-in replacement for the boiler. High-temp R290 reaches up to ~90 °C. Outdoor install, sealed 1.4 kg charge, EN 378 compliant — no boiler room, no flame on site.
iSTOR PCM
Thermal battery on both sides. Hot: recovered effluent heat banked for the next dye batch. Cold: process cooling rides through a PH brownout with zero compressor load. Production keeps running.
iSAVE + iVOLT
iSAVE meters every duty — monthly IPMVP Option B report to your accountant and your lender. iVOLT zero-export solar on the plant roof cuts the remaining grid draw a further 30–50%.
A Philippine dyehouse. A real number per batch.
Modelled on a Philippine textile dyeing & finishing plant — dye baths and finishing, scouring, process hot water, process cooling and hot-effluent heat recovery. Process plants scale up and down — the per-batch economics hold.
| Annual figure · dyeing & finishing plant | Today · boiler + old chiller | Karnot platform | You stop paying |
|---|---|---|---|
| Process heat (dye baths + finishing + hot water) | boiler (LPG/bunker) | iHEAT R290 + effluent recovery | ₱2.4M/yr |
| Process cooling + recovered effluent heat | wasted hot effluent · COP 2.8 | COP 4.2 CO₂ + recovery | ₱800K/yr |
| Total energy bill (heat + cooling) | ~₱3.2M/yr | ~₱1.2M/yr | −62% / ~₱2.0M |
| Scope 1 + refrigerant exposure | ~70 tCO₂e + GWP 3,922 | GWP 1 & 3 · natural | ~80 tCO₂e/yr |
| Total investment (VAT-inc) | (already paid) | ~₱3.0M | 1.5 yr cash payback |
The cash flow. Plain and dull.
CAPEX of ~₱3.0M, financed under a green loan at ~7.5% p.a. over 7 years. The monthly saving (~₱167K) covers the monthly loan payment (~₱48K) more than three times over. Net cash in pocket from day one.
We don't guess the saving. We calculate your thermodynamic minimum.
Pinch analysis maps every hot stream in your plant (dye-bath effluent that must cool, process-chiller heat that must leave) against every cold stream (incoming process water and dye baths that must heat) and computes the three numbers that define your energy performance. A dyehouse is the textbook case — the analysis practically writes itself.
The absolute least boiler energy your plant needs after maximum heat recovery. If your boiler burns more than this — and in every dyehouse we have surveyed, it does — the difference is pure waste.
The absolute least chiller energy required after recovery. Everything your process chiller removes above this is heat you paid to make and then paid again to throw away.
The dyehouse bottleneck temperature. Above it: heat deficit. Below it: heat surplus. A heat pump is the only utility that moves surplus heat from below the pinch to the deficit above it — which is why the saving is 62%, not 15%.
New to pinch analysis? We wrote the plain-English guide — no jargon, no PhD required, with worked composite curves explained in pictures. Then commission a Level 1 Energy Survey (₱90K, refunded in full on install) and we run the pinch study on your actual production log.
You pay nothing up front. The bank does.
Three Philippine banks run green-loan programmes built for exactly this kind of project. The monthly saving covers the loan payment more than three times over. Net cash flow goes up from day one.
These are loans, not grants. Plus BOI Pioneer Income Tax Holiday under RA 11285 — energy-efficient manufacturing qualifies. Karnot files the loan, the BOI registration, the building permits and the monthly IPMVP M&V report your lender wants to see as part of project scope. You sign at the bank window, not before.
Download the Process Industry Application Brief
A 4-page application brief and a 10-slide deck — both ready to share with your plant manager, your accountant or your board.
4-Page Application Brief
A4 portrait PDF · print-ready. Hero, cash strip, problem + architecture, four products, the dyehouse numbers table, pinch analysis, bank finance, founder quote.
10-Slide Sales Deck
16:9 landscape PDF. The complete presentation — problem, architecture, four boxes, the bill, cash flow, bank finance, pinch analysis, refrigerant trilemma, next steps.
Frequently Asked Questions
How much can a Philippine textile dyeing & finishing plant save?
A modelled Philippine textile dyeing & finishing plant saves approximately ₱2.0M per year — a 62% reduction in the combined heating and cooling energy bill. Today's setup (an LPG/bunker boiler ~₱2.4M/yr for dye baths, finishing and process hot water + a process chiller running at COP ~2.8 while the hot effluent is dumped to drain, ~₱800K/yr) costs about ₱3.2M/yr; the Karnot integrated platform delivers the same duties for about ₱1.2M/yr of electricity. With a 7-year green loan at ~7.5% p.a., the monthly saving (~₱167K) exceeds the loan payment (~₱48K), leaving roughly ₱120,000 net cash per month from day one. Process plants scale up and down proportionally.
Why is my hot effluent described as a heat bank?
Dye baths and finishing run at 60–90 °C, and the spent dye liquor and rinse water leave the machine hot — typically 50–80 °C — and go straight to the drain, thousands of litres a shift. Meanwhile incoming process water arrives cold and the boiler reheats it from scratch. A Karnot effluent heat-recovery exchanger captures the heat in that hot effluent and feeds it to the heat pump, which lifts it back up to dye-bath temperature. The heat you were flushing down the drain becomes the heat you buy back. Karnot also recovers the process-chiller condenser heat into the same hot-water and dye-bath load instead of throwing it into a cooling tower.
Can a heat pump reach dyeing temperatures? What about high-temperature polyester?
The iCOOL CO₂ gas cooler delivers 75–90 °C recovery and the high-temperature iHEAT R290 reaches up to ~90 °C at COP 4.0+ in Philippine ambient — covering cotton and reactive dyeing (60–80 °C), finishing, scouring and process hot water, which together are the bulk of dyehouse thermal demand. The honest nuance: high-temperature polyester dyeing runs at around 130 °C under pressure, above heat-pump reach, so that duty keeps a small boiler top-up. Everything else, the boiler is retired, not replaced — and the recovered hot effluent does the heavy lifting.
What is pinch analysis and why does it matter for my dyehouse?
Pinch analysis maps every hot stream (dye-bath effluent that must cool, process-chiller heat that must leave) against every cold stream (incoming process water and dye baths that must heat) and computes QHmin and QCmin — the absolute minimum heating and cooling your process needs after maximum heat recovery. Everything above that minimum is waste. In a dyehouse the pinch point sits around 40 °C, and a heat pump is the only utility that can move surplus heat from below the pinch to the deficit above it — which is why savings reach 62% rather than the 10–15% a heat-exchanger-only retrofit delivers. Start with the plain-English pinch guide, then commission a Level 1 Energy Survey (₱90K, refunded on install) and we run the pinch study on your actual production log.
Is CO₂ refrigerant safe for a process plant?
Yes — CO₂ (R744) is an A1 safety class refrigerant: non-toxic and non-flammable, with a GWP of 1 and no F-gas phasedown exposure. Compare the legacy options: R404A and R134a process chillers have GWP up to 3,922 with quota-driven service prices rising every year, and industrial ammonia is efficient but toxic (B2L) — exclusion zones, specialist technicians, insurance loadings. Karnot iHEAT R290 (propane) sits outdoors with a sealed 1.4 kg charge designed to EN 378, the correct design basis for natural-refrigerant systems rather than ASHRAE 15. Nothing on the asset register carries a phasedown date or an exclusion zone.
What happens to my production during a brownout?
The iSTOR PCM thermal battery carries the process cooling load through 8–12 hours of grid outage on stored cooling alone — no compressor, no generator — so production keeps running. On the hot side the same battery banks recovered effluent heat between batches so the dye baths and hot-water load are ready for the next run: the heat pump charges the hot buffer, the process line draws on demand.
Does this work for chemical processing too?
Yes — chemical processing is a strong pinch case wherever there are simultaneous heating and cooling duties in the 60–90 °C range. Reactor jacket heating, wash and rinse water, evaporation and product drying all want process heat, while reactor cooling and condenser duty need chilled water. Karnot iCOOL CO₂ captures the cooling-side heat and the high-temperature iHEAT R290 delivers it to the process at up to ~90 °C, with hot-effluent and condenser heat recovery doing the heavy lifting. We size on your stream temperatures, flows and production schedule.
What financing and incentives are available?
Three Philippine banks run green-loan programmes that fit process-industry CAPEX: DBP SEFP (~6.5–8% p.a., 70–80% LTV, industrial energy-efficiency priority), LandBank SEILP (~7% p.a., strong for regional processors), and BPI SDF (~1–1.5% below standard SME rates). Most installs also qualify for BOI Pioneer status and an Income Tax Holiday under RA 11285 as energy-efficient manufacturing. Karnot files the loan application, the BOI registration, the building permits and the monthly IPMVP M&V report your lender wants — as part of project scope.
Want the numbers for your plant?
Send us 12 months of LPG / bunker + electricity bills, your dye-bath temperatures and your production schedule. We come back with a sized system, your QHmin and QCmin, projected saving, payback — and the bank application ready to sign.