Distilled water
High-purity water is collected from a separate distilled-water outlet for daily use.
Pure Water Powered by Sunlight
Distilled Drinking Water
The Purest Drinking Water
No Electricity. No Filters.
No Chemicals. No Wastewater.
No Microplastics
No Nanoplastics
Era-Defining Solar Water Technology
Pure Water for Healthier Living
Solar Distillation Water Heater
ONE FREE ENERGY · DISTILLED WATER + HOT WATER
BiAGUA brings solar heat collection, steam generation, vapor transfer, condensation and heat recovery into one system. The same sunlight produces high-purity distilled water while simultaneously heating domestic water.
Ask about BiAGUA ↗
Two essential outputs. Four everyday benefits.
BiAGUA is both a solar water heater and a solar water purification system, making more useful output from the sunlight it captures.
Hot water for the home
Recovered condensation heat helps warm domestic water for bathing, washing and cleaning.
Long-term savings
Solar heat supplies both outputs, reducing dependence on purchased water and conventional water-heating energy.
Environmentally friendly
A passive solar process reduces energy demand and disposable purification consumables.
A greater use of solar heat
Evacuated glass tubes capture sunlight and generate vapor. Stainless-steel conduits guide the vapor down to a condenser inside the insulated water tank. As distilled water forms, condensation heat is recovered to warm the surrounding domestic water. The two products leave through separate outlets.
Excellence is born from simplicity
Operating at atmospheric pressure, BiAGUA uses natural solar heating, evaporation and condensation. Its distillation process needs no electricity, filter cartridge, RO membrane, pump or anti-scaling chemical. Producing high-purity water at home can become more accessible and affordable; actual output and savings depend on local conditions.
How solar distillation works
ONE SOLAR SYSTEM · TWO USEFUL PRODUCTS
Sunlight heats the water inside evacuated glass tubes. Vapor travels through stainless-steel conduits to an internal condenser, where distilled water forms and condensation heat helps warm domestic water.
Ask a technical question ↗Follow the sunlight
Collect solar heat
Sunlight heats water in the evacuated glass tubes.
Generate vapor
Water evaporates; vapor gathers above the water level.
Guide vapor downward
Stainless-steel conduits carry vapor to the condenser.
Condense and recover heat
Vapor forms distilled water as its released heat warms the tank.
Use both products
Collect distilled water and draw domestic hot water from separate outlets.
Models and estimated performance
SIX MODELS · ONE SOLAR IDEA
Compare six tube configurations and indicative daily production. Output depends on sunlight, climate, inlet-water temperature and operating conditions.
Discuss a model ↗Six solar distillation models
| Model | Tubes | Distilled water L/day | Hot water L/day | CO₂ avoided kg/year* |
|---|---|---|---|---|
| SD-12/1800-6/120 | 12 | 4–8 | 120 | 591 |
| SD-15/1800-7.5/150 | 15 | 5–10 | 150 | 739 |
| SD-18/1800-9/180 | 18 | 6–12 | 180 | 887 |
| SD-20/1800-10/200 | 20 | 7–13 | 200 | 986 |
| SD-24/1800-12/240 | 24 | 8–16 | 240 | 1,183 |
| SD-30/1800-15/300 | 30 | 10–20 | 300 | 1,478 |
*Brochure estimates only. Results depend on solar radiation, climate, inlet-water temperature, location and operating conditions. CO₂ values use assumptions in the brochure and are not a certified environmental claim.
Economic value example: 20-tube system
3,000 L / YEARDISTILLED WATER
60,000 L / YEARHOT WATER
Global reference prices for packaged drinking water
| Market | 19 L equivalent | Value of 3,000 L/year | 1.5 L equivalent | Value of 3,000 L/year |
|---|---|---|---|---|
| United States | USD $6–10 | USD $950–1,580 | USD $1.50–2.00 | USD $3,000–4,000 |
| Europe | USD $9–18 | USD $1,420–2,840 | USD $0.50–1.75 | USD $1,000–3,500 |
| Middle East | USD $2.70–4.00 | USD $430–630 | USD $0.35–0.70 | USD $700–1,400 |
| South Asia | USD $1.20–2.50 | USD $190–400 | USD $0.30–0.50 | USD $600–1,000 |
| Africa | USD $1.50–6.00 | USD $240–950 | USD $0.60–1.20 | USD $1,200–2,400 |
| South America | USD $3.50–9.00 | USD $550–1,420 | USD $0.70–1.30 | USD $1,400–2,600 |
Historical reference ranges reproduced from the supplied brochure; not current quotes or projected savings. Actual local prices, taxes, installation costs and water suitability must be checked separately.
The advantages of BiAGUA
EXCELLENCE IS BORN IN SIMPLICITY
One passive solar technology supports household hot water and produces distilled water. Explore the design choices behind efficiency, simpler maintenance and a lower-plastic-contact water path.
Ask about installation ↗Five practical advantages
Use solar heat twice
Solar heat first generates vapor; condensation heat then contributes to warming domestic water.
High-purity distilled water
Vapor condensation separates many dissolved salts and non-volatile substances from water. Test output before claiming drinking-water suitability.
Fewer replaceable consumables
The distillation process has no filter cartridge, RO membrane or anti-scaling chemical to replace.
Passive and durable
Atmospheric-pressure operation and a vapor path without an external pump support simpler maintenance.
Reduce microplastic risk
Glass tubes, stainless-steel vapor conduits and a stainless-steel condenser minimize plastic contact in the principal water-production path.
Two separate household water lines
Domestic hot water serves bathing and washing. The distilled-water outlet can supply a dedicated tap. Installation, materials and water-quality testing should follow local requirements.
Sunlight becomes useful water and warmth.
Solar operation reduces reliance on conventional energy for domestic water heating. Actual energy and emissions savings vary by location, usage and the system being replaced.
Patented Solar Distillation Technology
Solar Distillation Water Heaters
A new generation of solar thermal technology that produces purified water while simultaneously providing domestic hot water, making greater use of the solar energy captured by evacuated glass tubes.
Features & Advantages
- Dual Solar Energy Utilization Captured solar energy is used for water heating and again in the solar distillation process, increasing the useful output from the system.
Patented Solar Desalination Technology
Solar Desalination Systems
Decentralized solar desalination systems designed to produce fresh water from seawater or brackish water using solar thermal energy, reducing dependence on electricity-intensive desalination equipment and disposable treatment consumables.
Features & Advantages
- Uses solar thermal energy to evaporate saline water and condense the vapor into fresh water.
Applications
Sea Water
Brackish water
Costal Area
Islands
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Products, projects and technology cooperation
SolarBridge works with distributors, installers, project developers and manufacturing partners around the world.
Contact SolarBridge