₦airaland Forum

A UNIMAID final year student , Muhammad jaafar from the department of physics has constructed a solar water heater, a water heater utilizing the sunlight to produce a hot water for domestic hot water demand. the solar water constructed from a locally available materials to minimize cost , made for simplicity of installation, reduce electricity bill and durability to meet domestic hot water demand.

According to him , the solar water heater can heat water up to 70°C which sufficient for domestic water demand ; in his word “A solar water heating system for domestic use has been designed and constructed using locally available materials. Solar energy is received by a flat-plate collector consisting of a thin absorber plate, integrated with grids of fluid carrying tubes, and placed in an insulated casing with a transparent glass cover having a water tank integrated in the system. The radiation emitted by the absorber plate cannot escape through the glass, thus increasing its temperature. On the principle of thermosyphon, hot water is pushed through the collector and rises by natural convection to the water storage tank and cold water from the water tank simultaneously descends to the bottom header of the collector by gravity pull.

The water gets heated and flows into a storage tank through thermosyphon principle. The system was tested and Maximum fluid output temperature and the collector temperature, of 75°C and 70°C respectively, were obtained on a sunny day. This solar water heating system finds useful application and acts as a renewable energy resource in regions where there is abundant and consistent sunlight.”

He further explained the working principle of the solar water heater , in his words ” Principle of operation of a flat-plate solar water heater, The solar radiation passes through the glass in front of the absorber plate and strikes the flat black surface of the absorber plate where the solar energy is absorbed as heat (i.e. by increasing the internal energy).

Figure 2 solar water heater showing the flat plate solar collector exposed to sunlight

This causes the flat-plate collector to become very hot, and so the water contained in the pipes bounded to the plate also absorb the heat by conduction. The water inside the tubes (risers/headers) expands and so becomes less dense than the cold water from the storage cylinder. On the principle of thermosyphon, hot water is pushed through the collector and rises by natural convection to the water storage tank and cold water from the water tank simultaneously descends to the bottom header of the collector by gravity pull.

Therefore, there is circulation as a result of an increase in temperature and volume of the warmer water to the water storage tank. The circulation continues as hot water goes out, while cold water comes in.”

When asked what are advantages of this solar water heater , he said Solar water heaters based on thermosyphon principle have the following advantages: simplicity and low cost, requires no electrical supply, need no controller or pump, easy to install, can withstand mild sub-zero temperature, is reliable and long-lasting since there are no moving parts, scalable (several collectors can be connected in parallel to increase hot water supply), is easy to build and operate, no fuel cost, provides heated water of about 70 °C or within the range, and is portable.

They, however, have the following disadvantages: cannot withstand mains pressure, cannot give higher temperature water, are affected by weather conditions, very useful only during the dry season, and can be more practicable and useful in the sunny regions.”

when asked what is the significance of this project he said “ it designed to address challenges and threat pose by the use of fossil fuels ; such as the increase in oil demand accompanied with oil price rise, political crises in the world oil deports, depletion of oil reserve, reduced availability of fossil fuel, and other harmful effect attributed to the use of hydrocarbons such as, oil spillage, aquatic water pollution, agricultural soil degradation, ozone layer depletion, health hazards, and relatively tangible problems of aesthetics to problems of environmental conservation, greenhouse effect, and global climate change and other air pollution issues caused mainly by burning of these hydrocarbon as a source of heat energy .

The unavailability of electricity in most of our rural area, its high cost and inadequacy has led to the drive to use environmentally friendly, cheap and renewable alternative sources of heat energy to eliminate or minimize these negative effects. Presently, solar and other alternative energy resources are being harnessed for various applications such as power generation, air-conditioning, space heating, domestic hot water system, etc. “

source:http://sasuwa..com/2015/07/a-designed-and-constructed-solar-water.html

Dis is awesome...kudos bros

Ok nice. But OP no vex Ooo.. But if you modify your topic e for make more sense.

Thank You.

*modified

@OP sheh I tell you.. Now your post don enta FP

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cool, 1 question, How do I get hot water on a very cold and rainy day?

Hmm...ok!
Cool! At least he invented something!

But as an Inventor, I'd like to ask him about the benefits of what he did? Who needs hot water on a sunny day?

Looking at it from another angle, it could be used as a water purifyer but at 75 degrees? I don't think the water is boiled enough to kill its germs.

But hey! Its a good one from the student, We start from somewhere and grow to become even better, but we have to tackle life problems with our inventions...that's what makes a good inventor.

Lalasticlala let's celebrate our own!

Lalasticlala . . . . put this where it needs to be. This guy is a northerner. I think it will go a long way to prove that intelligence and creativity is not concentrated to one area alone.





The invention is a lil useless though.

toxiflam:
cool, 1 question, How do I get hot water on a very cold and rainy day?

Store it in a thermos flask.

Cool

UNIMAID could be a strong research institute in the NE..when insurgency subsides.

If this student has the necessary support, He'll be a big deal in that country. In my current location, 98% of the houses here use that so we can reduce how much we pay for electricity and it comes in very handy in the winter. This is a good one

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My university! Nice one

Talented Guy.

WOW, SUCH INGENUITY..!!
Hope govt can see him and aid him in his quest to fufill his entrepreneural dreams

toxiflam:
cool, 1 question, How do I get hot water on a very cold and rainy day?

Wait untill d sun comes out naw

Good START.

The real problem with our so-called "inventions is they are not commercialised and more importantly not constantly revised and IMPROVED to make them sustainable, useful and competitive with their foreign equivalents.

I used to do this when I was still a kid.We used to our buckets under the sun to heat up.So its not new.

Nigerians got talent

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Lol... Too big and cumbersome..





I can as well put the water under the sun to heat.

no hating though..buh we did this exact project in a science fair in secondary skul 09...gss pyakasa..abj..so y wud a final yr project b d same tin??its supposed to b for sec skul stds

nice question

toxiflam:
cool, 1 question, How do I get hot water on a very cold and rainy day?

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IN A ZOO LIKE THIS! That dude is wasting his time and resources!