Solar-Powered Desalination

Question 1

What is solar water distillation?

Answer 1

Heat energy from the panels are absorbs by the untreated water. Once at high temperatures, the water evaporates and transforms into vapor, leaving pure water

Question 2

How it works?

Answer 2

• Replicates the way nature makes rain
• Based on condesation, evaporation
• Most stills need to be about six square meters in size to produce enough water for a single person for a day. I.e efficiency is low (perhaps for the archaic setup as described in article, which is a vessel of water covered with clear glass or plastic)

Question 3

Disadvantages?

Answer 3

• 6L of water per day. Very slow. Hold on RMIT managed 7.5L/day
• The byproducts can be source of pollution if not disposed of correctly. I thought the impurities mix with heat and evaporate?

Question 4

What are the types of solar water distillers?

Answer 4

• Passive and active
• Active setup accelerates heating process by introducing another source of thermal energy for faster evaporation i.e. solar panels
• Types of stills include: Single-effect, multi-effect, basin-type, wick, multi-wick and diffusion

Question 5

Describe the desalination process used in the plant at Kenya?

Answer 5

Water is harvested (from the borehole) → Stored in tanks → Reverse Osmosis (Filtration Tanks → Inject Chlorine) → Ready

Question 6

What desalination technique does the GivePower Max solar farms use?

Answer 6

Reverse Osmosis

Question 7

What’s the capacity of the GivePower Max solar farm?

Answer 7

70,000L daily

Question 8

What are the 3 products GivePower offers?

Answer 8

1. Max
2. Mobi
3. Mobi+

Question 9

F CUBED’s Carocell solar panel technology is able to purify water from what sources in particular?

Answer 9

Polluted, contaminated, industrial waste water, brackish ground water, saline aquifers and sea water

Question 10

Describe the OUTSTANDING characteristics of the Carocell solar panel?

Answer 10

1. No power required
2. No filters
3. No maintenance
4. No chemicals
5. No expertise to operate or maintain

This is OP

Question 11

What’s the output of F CUBED’s 5 panel solar farm?

Answer 11

100-125 litres daily

Question 12

At least ___ million children under five years old die every year from water related disease, which is one child every __ _____.

Answer 12

1.8

20 seconds

Question 13

Use of bottled water is increasing, but it takes _ ___ of water to produce one litre of bottled water — and in the USA alone an additional __ ____ barrels of oil. 💡

Answer 13

3 litres

17 million

Question 14

Fill in the blanks:

The water arrives at the top of the panel and ___ to the bottom of the panel. The movement is impeded by a ___ which allows sufficient time for heating (___ deg. celsius) to be applied 👍
The ____ ____ off the internal fabric (vapour) and the vapour then ____ on the inside of the transparent sheet (distilled water) 🤔

Answer 14

flows
fabric
65-90
contaminants evaporate
condenses

Question 15

What is the purpose of ZLD technology?

Answer 15

1. Purifies brine-infested water

2. Produces salt

Question 16

How are efficiencies of 65 - 80% realized with Carocell solar panels?

Answer 16

The increased temperature of the feed water accelerates condensation/evaporation

Question 17

What’s the lifespan of a F CUBED solar farm?

Answer 17

10 - 20 years