Distilled water
High-purity water is collected from a separate distilled-water outlet for daily use.
Чистая вода от солнечного света
Дистиллированная питьевая вода
Самая Чистая Питьевая Вода
Без фильтров
Без электричества
Без микропластика
Без нанопластика
Солнечная водная технология, определяющая новую эпоху
Чистая вода для более здоровой жизни
Why BiAGUA
BiAGUA introduces a powerful way to use sunlight, addressing one of humanity’s most essential challenges: access to clean drinking water. Using only solar energy, it produces distilled water and hot water, bringing two everyday needs together in one system. Thanks to its innovative use of inverted evacuated glass tubes and ingenious passive design, BiAGUA uses only solar energy to produce distilled water and hot water. It goes beyond heating water to make access to clean water simpler, easier, and more affordable. By reducing dependence on purchased water and replacement filters, BiAGUA aims to support healthier lives and greater water independence for communities worldwide.
Benefits
BiAGUA overcomes the limitations of conventional solar water heaters and electrical water purifiers, operating entirely at atmospheric pressure to efficiently produce distilled water and domestic hot water at the same time.
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 Water Heater Works
ONE SOLAR SYSTEM · TWO ESSENTIAL PRODUCTS
BiAGUA combines inverted evacuated glass tubes, stainless steel vapor conduits, an internal condenser, and an insulated hot water tank in one compact, passive system. Sunlight heats water inside the inverted tubes, generating vapor that travels downward through the conduits into the condenser. As the vapor condenses into distilled water, it releases heat to the surrounding domestic water. Separate outlets supply distilled water and hot water. These connected processes take place within a highly insulated thermal boundary, helping retain heat for useful work. Heat exchanged between the conduits and surrounding water remains available within the system, while the internal condenser recovers condensation heat for water heating. The same collected solar heat therefore serves two purposes in sequence: water purification and domestic water heating. BiAGUA brings these everyday needs together, adding distilled-water production to the benefits of solar water heating. An elevated makeup tank supplies water by gravity and maintains the operating water level throughout the system for optimal performance. The system operates without electric pumps, filter cartridges, or RO membranes—making practical use of sunlight through an integrated passive design built around heat recovery.
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.
The advantages of Solar Distillation Water Heater
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.
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.
Models and 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.
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 |
*Results depend on solar radiation, climate, inlet-water temperature, location and operating conditions.
Economic value example: 20-tube system
3,000 L / YEARDISTILLED WATER
60,000 L / YEARHOT WATER
Global reference prices for packaged drinking water and hot water
| Market | 19 L bottled water | Value of 3,000 L/year | 60,000 L hot-water value / year | Total value / year |
|---|---|---|---|---|
| United States | USD $6–10 | USD $950–1,580 | ≈ USD $330 | USD $1,280–1,910 |
| Europe | USD $9–18 | USD $1,420–2,840 | ≈ USD $495 | USD $1,915–3,335 |
| Middle East | USD $2.70–4.00 | USD $430–630 | ≈ USD $155 | USD $585–785 |
| South Asia | USD $1.20–2.50 | USD $190–400 | ≈ USD $155 | USD $345–555 |
| Africa | USD $1.50–6.00 | USD $240–950 | ≈ USD $270 | USD $510–1,220 |
| South America | USD $3.50–9.00 | USD $550–1,420 | ≈ USD $350 | USD $900–1,770 |
Hot-water values assume 60,000 L/year heated from 20°C to 45°C at 90% efficiency. The total adds the value of 3,000 L/year of distilled water, estimated using 19 L bottled-water reference prices, to that market's hot-water estimate. These are not current quotes or projected savings; check local prices and costs.
BiAGUA vs Solar Water Heater
1. Greater value from sunlight — BiAGUA adds distilled-water production to solar water heating, delivering greater value from the same sunlight. 2. Helps sustain performance — Downward-opening tubes and recurring water-level changes help flush loose sediment and sustain performance, reducing buildup. 3. Easier integration of freeze protection — Tubes positioned above the tank can benefit from an optional tank heater for freeze protection. 4. Greater water independence — On-site distilled-water production also reduces dependence on purchased drinking water and its deliveries.
BiAGUA vs Electric Water Purifier
1. Purification powered by sunlight — solar evaporation and condensation produce high-purity distilled water without electricity, motors, pumps, filter cartridges, RO membranes, or antiscaling chemicals in the core process. 2. Effective microbial protection — thermal distillation provides an effective barrier against bacteria and viruses. 3. Constant High Purity without filter exhaustion — purification does not rely on cartridges that gradually become saturated. Proper operation, periodic cleaning, and hygienic collection and storage help maintain consistent water quality. 4. Less contact with plastics — glass tubes, stainless steel vapor conduits, and a stainless steel condenser minimize plastic contact along the main distillation path. 5. Distilled water plus hot water — recovered condensation heat warms domestic water, delivering two useful outputs from the same solar input. 6. Lower recurring costs — sunlight supplies process energy, while eliminating replacement purification cartridges and membranes reduces ongoing consumable expenses. 7. Built for long service life — passive operation at atmospheric pressure, without motors, pumps, or electronic control circuits in the core process, means fewer potential failure points. 8. Easy visual checking — after distillation and residual drainage stop at night or early morning, a dry outlet helps indicate that source water is not crossing into the distilled-water path, adding confidence in the next day’s production. 9. Greater independence — reduce reliance on electricity, replacement supplies, and purchased drinking water.
Frequently Asked Questions
Questions about output, water quality, installation, maintenance and importing.
What does BiAGUA produce?
It produces distilled water and domestic hot water using the same solar heat input. The two water streams have separate outlets.
How much water can a 20-tube system produce?
The reference average is about 10 litres of distilled water and 200 litres of hot water per day. Actual output varies with sunlight, climate, inlet-water temperature and use; some days produce less and others more.
How does it work?
Sunlight heats water inside inverted evacuated tubes. Vapor travels through stainless-steel conduits to a condenser. Condensation produces distilled water and releases heat to the domestic-water side.
Does the core process need electricity or filter cartridges?
The solar distillation process uses solar heat and does not require a powered pump, treatment filter cartridges or RO membranes. Any optional backup equipment has its own requirements.
Can I use any source water?
Feedwater must be assessed for the intended application. Distillation does not remove every volatile chemical; collected water should be tested before drinking use.
Is it maintenance-free?
No. Inspect the system and outlets, keep the collection path clean, and remove deposits as required by feedwater quality and operating conditions.
What installation conditions are needed?
A sunny location, suitable structural support, the correct water supply arrangement and separate collection plumbing. Keep the condenser vent open and follow the model-specific installation instructions.
How do I choose models or place an import order?
Send your country, contact details and requirements through Enquiry. Our team can discuss model selection, quantities, shipping and branding during follow-up.
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
Efficient Solar Hot Water
Reliable solar water heating systems that convert solar radiation directly into useful hot water for residential, commercial and institutional applications, reducing conventional energy consumption and operating costs.
Features & Advantages
- High-Efficiency Evacuated Glass Tubes Evacuated tube collectors provide strong thermal performance and effective heat capture across a wide range of weather conditions.
Продукты, проекты и технологическое сотрудничество
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