Energy Production
is a water-based refrigeration system replacing synthetic refrigerants (CFCs, HCFCs, HFCs) in air conditioning, cooling, and industrial refrigeration.
Technology brief
is a water-based refrigeration system replacing synthetic refrigerants (CFCs, HCFCs, HFCs) in air conditioning, cooling, and industrial refrigeration.
The challenge
Primary use cases: building HVAC (residential, commercial, industrial); data center cooling; cold storage (food, pharmaceuticals); industrial process cooling; vehicle air conditioning.
Industries and users: HVAC contractors, facility operators, refrigeration manufacturers, automotive OEMs.
Scale: modular units 5–100 kW cooling capacity; stackable for large installations.
ARBOK solution
ARBOK-Airgizer is a water-based refrigeration system replacing synthetic refrigerants (CFCs, HCFCs, HFCs) in air conditioning, cooling, and industrial refrigeration. Using ARBOK vacuum technology, water serves as the working fluid; achieves 5–7× lower electricity consumption than conventional AC systems. Zero ozone depletion; minimal global warming potential (GWP). Operates at ambient-temperature equilibrium with thermodynamic efficiency surpassing conventional compressor-based systems. Deployable in existing HVAC infrastructure.
Water circulates through vacuum chamber where evaporation at low pressure (vacuum) causes temperature drop; condensation in secondary loop releases cooling energy to destination (building, equipment). Thermodynamic efficiency driven by water's high latent heat of vaporization and natural phase-change dynamics at vacuum conditions. No moving compressor; passive/semi-passive operation. Electricity used only for circulation pump and vacuum maintenance (~20 % of conventional AC).
Market and application
Global HVAC market: ~€130B annually. Regulatory pressure to eliminate synthetic refrigerants accelerating market shift. Estimated addressable market: €20–30B over 10 years for retrofit and new installations globally.
CAPEX: €10k–50k per 50 kW unit (higher than conventional AC; offset by efficiency). OPEX: €500–1500/year (vs. €3000–5000 conventional). Annual savings: €2000–4000 per unit. Payback: 3–5 years; net present value highly positive.
Use cases
Primary use cases: building HVAC (residential, commercial, industrial); data center cooling; cold storage (food, pharmaceuticals); industrial process cooling; vehicle air conditioning.
Industries and users: HVAC contractors, facility operators, refrigeration manufacturers, automotive OEMs.
Scale: modular units 5–100 kW cooling capacity; stackable for large installations.
Steps: HVAC audit → unit sizing → installation (4–8 weeks) → commissioning → autonomous operation. Requires only electrical connection and water supply line. 24/7 automated operation.
Retrofits to existing HVAC systems (minimal ductwork changes); integrates with smart building controls; compatible with solar/wind power (low electricity draw).
ARBOK-Airgizer is a water-based refrigeration system replacing synthetic refrigerants (CFCs, HCFCs, HFCs) in air conditioning, cooling, and industrial refrigeration. Using ARBOK vacuum technology, water serves as the working fluid; achieves 5–7× lower electricity consumption than conventional AC systems. Zero ozone depletion; minimal global warming potential (GWP). Operates at ambient-temperature equilibrium with thermodynamic efficiency surpassing conventional compressor-based systems. Deployable in existing HVAC infrastructure.
Primary use cases: building HVAC (residential, commercial, industrial); data center cooling; cold storage (food, pharmaceuticals); industrial process cooling; vehicle air conditioning.
Industries and users: HVAC contractors, facility operators, refrigeration manufacturers, automotive OEMs.
Scale: modular units 5–100 kW cooling capacity; stackable for large installations.
Water circulates through vacuum chamber where evaporation at low pressure (vacuum) causes temperature drop; condensation in secondary loop releases cooling energy to destination (building, equipment). Thermodynamic efficiency driven by water's high latent heat of vaporization and natural phase-change dynamics at vacuum conditions. No moving compressor; passive/semi-passive operation. Electricity used only for circulation pump and vacuum maintenance (~20 % of conventional AC).
Cooling capacity: 5–100 kW per module (scalable).
COP (Coefficient of Performance): 4.5–6.0 (vs. conventional AC 2.5–3.5).
Electricity consumption: 0.18–0.22 kWh/ton of cooling (vs. 0.35–0.40 kWh/ton conventional).
Refrigerant: water (non-toxic, zero GWP, zero ODP).
Operating temperature range: –10 °C to +45 °C ambient.
Noise level: < 40 dB (passive design, no compressor).
Vacuum evaporation chamber; secondary heat-exchange condenser; water circulation pump; PLC/automation for vacuum control; integrated thermal monitoring. Compact, modular; retrofit-compatible with existing ductwork/piping.
Technical: 5–7× energy reduction; no synthetic refrigerant; zero ozone impact; noiseless operation; scalable modularity.
Economic: 60–70 % lower operating cost (electricity savings); minimal maintenance (water is non-corrosive, non-reactive); no refrigerant replacement cycles.
Environmental: water only; zero GWP; supports climate goals (Montreal Protocol + Kyoto/Paris).
Strategic: regulatory-proof (future refrigerant bans irrelevant); premium positioning (ESG/green building certification).
Retrofits to existing HVAC systems (minimal ductwork changes); integrates with smart building controls; compatible with solar/wind power (low electricity draw).
Steps: HVAC audit → unit sizing → installation (4–8 weeks) → commissioning → autonomous operation. Requires only electrical connection and water supply line. 24/7 automated operation.
TRL 5 — Validated in relevant environment. Pilot HVAC installations completed in commercial buildings; cooling performance verified; energy savings measured (5–7× reduction confirmed). Ready for broader market deployment with OEM partnerships.
Global HVAC market: ~€130B annually. Regulatory pressure to eliminate synthetic refrigerants accelerating market shift. Estimated addressable market: €20–30B over 10 years for retrofit and new installations globally.
CAPEX: €10k–50k per 50 kW unit (higher than conventional AC; offset by efficiency). OPEX: €500–1500/year (vs. €3000–5000 conventional). Annual savings: €2000–4000 per unit. Payback: 3–5 years; net present value highly positive.
Market acceptance (novel technology); integration complexity with legacy HVAC systems; water-based working fluid hygiene (algae prevention); scaling to large industrial cooling demands.
ARBOK-VC (Vacuum Cracking) · Solar Cooling Systems · Climate-Neutral HVAC
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