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SOLAR WATER DSW Series
Simultaneous production of Distilled water and Hot water using Solar Thermal Energy.
It can produce distilled water and hot water only using solar energy without using electricity or gas. It can produce distilled water from tap water, rain water.

Acquired patent in Japan and around the
- Acquired
- Japan, Germany, Korea, China, Australia, Hong Kong, Malaysia, India, Indonesia
- Pending
- Thailand

DSW’s Structure

Produce distilled water from tap water, rain water.
Simultaneous producing apparatus of drinking water and hot water using solar thermal energy.
Turn rainwater to drinking water by solar thermal energy.
Obtaining safe water with low cost.



Effective heat collection area:3.82㎡
Hot-water tank volume:142L
Low-temperature tank volume:66L
Evaporation dish volume:42L
Rainwater tank volume:208L
Type RDSW with rainwater storage tank can produce drinking water from rainwater.
This RDSWⅡ, which can be operated without electricity and gas, is available in case of a disaster strike.
Composition of Distilled water
Items | Standard value | River water (Shira river) | Distilled water |
---|---|---|---|
Common bacteria | 100/ml | 4900/ml | 0/ml |
E.Coli bacteria | Not to be detected | Detected | Not to be detected |
Nitrate nitrogen | 10mg/L | 0.9mg/L | 0.005mg/L |
Chloride ion | 200mg/L | 8mg/L | <1.0mg/L |
ORGANIC MATTER (TOC) | 3mg/L | 0.4mg/L | <0.3mg/L |
pH | 5.8-8.6 | 7.6 | 7.3 |
Taste | Not abnomal | Not abnomal | Not abnomal |
Odor | Not abnomal | Not abnomal | Not abnomal |
Colour | 5 degree | 11 degree | <0.5 degree |
Turbidity | 2 degree | 2 degree | <0.2 degree |
Items | Common bacteria | E.Coli bacteria | Nitrate nitrogen | Chloride ion | ORGANIC MATTER (TOC) | pH | Taste | Odor | Colour | Turbidity |
---|---|---|---|---|---|---|---|---|---|---|
Standard value | 100/ml | Not to be detected | 10mg/L | 200mg/L | 3mg/L | 5.8-8.6 | Not abnomal | Not abnomal | 5 degree | 2 degree |
River water (Shira river) | 4900/ml | Detected | 0.9mg/L | 8mg/L | 0.4mg/L | 7.6 | Not abnomal | Not abnomal | 11 degree | 2 degree |
Distilled water | 0/ml | Not to be detected | 0.005mg/L | <1.0mg/L | <0.3mg/L | 7.3 | Not abnomal | Not abnomal | <0.5 degree | <0.2 degree |
Analyzed by DOJIN Glocal Co. Ltd. 2013.7.16

After Solar distillation


※Picture is illustration purpose
Change distilled water to delicious mineral water.

By passing through our sophisticated mineral unit, we can change distilled water to delicious mineral water.



Generate pure water with the power of the sun!!

We work for solving water and garbage problems by the use of DSW.
We developed ‘Solar Water’; solar heating device which produces drinking water and hot water simultaneously.
This is the first Solar Heater Water device in the world to generate distilled water which we can safely drink as drinking water by the use of solar heat. This product of ours is focused on highly on the world from the point of solving water problems and reducing the environmental load due to the consumption of pet bottles.

Large Capacity RSS Series
Suitable for Nursing home, Hospital etc.
Cutting cost by using Solar Energy.

RSS360Ⅳ (Suitable for floor heating)
Heat collection Area / 8㎡
Capacity / 360L
Difference from conventional
①Temperature setting is possible
(max:90℃)
It can be heated to boiling level with solar thermal energy by setting it at 90 ℃.

②1.3 to 2 times higher efficiency
than conventional products
When the set temperature is reached, fresh water is supplied. High efficiency is realized by this mechanism!

NEWNISP
It is a higher-level model of the RSS system that can set the indicated temperature.
The excess hot water in the storage tank can be reheated and reused.
NISP can be used without wasting resources.

construction example
Suitable for Nursing home, Hospitals, Nursing school. Many installation results.

a nursing home for the elderly “Seisen” ( in Shichijo )

a nursing home for the elderly “Edzu Shobuen”
Natural Circulation Type
Solar water heater
Even in winter, you can use hot water to mix with water.
ML Series

Reaching temperature:50℃

Reaching temperature:67℃

Reaching temperature:75℃
* Actual measurement Data in Japan(Kumamoto), December, Sunny day, Incline angle : 32°, Supply water temperature:9℃
* Actual measurement Data tested by Kitami Institute of Technology
High heat retention and durability
High durability with tanks made of stainless steel.Temperature drops at 4℃ even in the cold night below -18℃.
Obtaining hot water for bathing even in winter
Large capacity RSS can provide hot
water for Bathing without additional
heating.
Abundant Line up
Various sizes are available according to the usage situation at home.
Smaller Series

S48Ⅰ
- Capacity:
- 48L
- Heat collection area:
- 0.8㎡
- Reaching temperature:
- 58℃
- Heat intake:
- 2,979kcal

M93Ⅰ
- Capacity:
- 93L
- Heat collection area:
- 1.5㎡
- Reaching temperature:
- 46℃
- Heat intake:
- 3,487kcal

ML93Ⅰ
- Capacity:
- 48L
- Heat collection area:
- 2.0㎡
- Reaching temperature:
- 58℃
- Heat intake:
- 4,648kcal

A200
- Capacity:
- 200L
- Heat collection area:
- 2.52㎡
- Reaching temperature:
- 40℃
- Heat intake:
- 5,000kcal
* Actual measurement Data in Japan(Kumamoto), December, Sunny day, Incline angle : 32°, Supply water temperature:9℃
We are looking for dealers and constraction shops
Would you like to be our partner?
The products, we have been developing are not just for making hot water.
In addition to solar water heater, we are looking for companies that understand the value of selling solar water heater applied equipment and sharing the work of constraction work.

About us
We have a history of more than half a century and have been consistently engaged in the developing, manufacturing, selling and services on our solar thermal utilizing apparatuses.
Company Profile
Company Name | Azuma Solar Co., Ltd. |
---|---|
Established | 1962, July |
Office | Head Office:Kumamoto Branch Office:Saga・Yamaguchi・Kagoshima・Kanagawa・Saitama(Planned) |
Business Field | Development, manufacture, sales, construction and service of Solar water heating equipment, floor heating system, greenhouse heating system, etc. |
Employee | 30 |
Products
Please download the PDF from the below.
●Brochure
●Leaflet