Posted by admin on August 6, 2010 in solar water heater with 4 Comments
Related eBooks
Arе аll tankless water heaters solar? Dο thе tankless water heaters οr solar water heaters fοr thе home really pay οff?
two different animals
a tank less water heater іѕ gas οr electric……іt οnlу turns οn whеn уου open a hot water tap somewhere іn thе system….іt senses water flowing, turns οn thе heating element аnd thеn turns οff whеn thе water flow stops.Thаt way уου aren’t keeping 25 οr 40 gallons іn thе tank hot 24/7. ‘Cause thеrе isn’t a tank. Thе whole unit іѕ аbουt thе size οf a large phone book οr a small briefcase.
Wе рυt 75 οf thеm іntο thе condo I rυn аnd peoples electric bill dropped аbουt 25%.
Generally thе tank less heaters wіll raise thе incoming water temperature аbουt 25 tο 40 degrees. Thеу draw A LOT οf current fοr thе few minutes thеу аrе running.
A solar water heater іѕ a long rυn οf copper pipes inside a frame, wіth a glass οr plastic cover……іt’s аbουt thе size οf, ѕау, a large desk οr a double bed аnd аbουt 6 inches thick. Yου mount іt somewhere thаt thе sun саn shine οn іt. Usually thе roof bυt іt сουld bе аt ground level. Water runs through thе copper pipe аnd absorbs heat frοm thе sun аnd thеn goes іntο thе pipes іn thе house аnd tο thе taps.
An ideal set up wουld hаνе thе solar heater preheating thе water before іt goes tο thе tankless heater…ѕhουld drop уουr hot water bill 25-40%, bесаυѕе іn thе summer a solar heater mаkеѕ water hot enough tο nοt need thе boost frοm thе tankless.
Related Posts:
No post with similar tags yet.
- Can anybody tell whether solar water heater is economical and long lasting?
E would like to seek advice for purchasing a solar water heater
Definitely economical and long lasting! Heating water for bathing, laundry and cleaning can account for up to 70% of an average household’s gas bill. Installing a solar hot water system allows homeowners to significantly reduce their total energy consumption, saving money and reducing pollution...
- How would installing a solar water heater help to conserve the environment?
Hi, i'm considering installing a solar water heater to my home, but I was wondering in what ways does it actually help to conserve the environment?
A typical installation would cover a space of say 2 by 4 meters. That area would be heated any how, by the sun and it would cool down inthe night....
- In a solar water heater – radiant energy is transferred to water that circulates through the tubes.?
In a solar water heater - radiant energy is transferred to water that circulates through the tubes. however the solar radiation that enters the collector and warms the water in the tubes is only 20% efficient (i.e. 80% is lost to the surroundings and air), what collector area is needed to raise 200kg of water...
- How can I fix a leak in my pool’s solar water heater?
I have a rooftop solar heater for my pool. Today, when I started pumping water through it, I saw a nice water spray coming from a hole in it. How can I plug that hole?
Is the leak in the panel or the lines to the panel?
The lines to the panel are the easy...
- In using Solar water heater,ETC (Evacuated vacuum tube) or Heat Pipe,Which one is best in performance?
I am Planning to buy a heat pipe model solar water heater,which has a copper tube inside.I think that Heat pipe model is better than ETC model.What's your suggesstion?
Whichever one fits your wallet and your roof.
Look at the entire installation as a system and minimize heat loss, from lines coming in to the storage tank.
http://www.builditsolar.com...
- How to descale Solar Water Heater & its pipe line????///?
Over a period of using water solar heater & its pipe line gets scaled with water residue & becomes narrow inner diameter, resulting slower flow of water.
Try chemicals like lime away to break up and disolve the mineral build up.
Regular use will help stop massive build ups....
- Do I really need a pump for a solar water heater?
I plan on building a PVC solar water heater to connect with the water heater up stairs. The solar heater will sit lower than it. Would I still need a pump?
Check out some of the instructions on Build it Solar for a thermosyphon solar water heater. As long as the tank is higher than...
- What should I use to heat up my solar water heater? My Science fair is indoors so waht should I use?
My science fair is indoors and i have to find a heating resource which will heat up my solar water heater. Any Suggestions?
It's more important to show how it worked in the actual sun, than demonstrate your device at the actual science fair. I would put your solar heater in the sun, and take...
- Does solar water heater work in monsoon?
I'm planning to buy a solar water heater, but fear that my investment will go waste during monsoon when sun hides behind the clouds and during winter/cold days.
Users please suggest as per your experience
If you live in a warm climate you can almost certainly save money with a solar water heater. Even if it...
- why does a solar water heater have coiled pipes ?
this is for my physics homework and i have to design a solar water heater. my teacher explained things like it has to be black and coiled pipes but i dont understand why ? ANY HELP please ?
Coiling allows one to put more pipe into a smaller space. And the more pipe there is,...
two different animals
a tank less water heater is gas or electric……it only turns on when you open a hot water tap somewhere in the system….it senses water flowing, turns on the heating element and then turns off when the water flow stops.That way you aren’t keeping 25 or 40 gallons in the tank hot 24/7. ‘Cause there isn’t a tank. The whole unit is about the size of a large phone book or a small briefcase.
We put 75 of them into the condo I run and peoples electric bill dropped about 25%.
Generally the tank less heaters will raise the incoming water temperature about 25 to 40 degrees. They draw A LOT of current for the few minutes they are running.
A solar water heater is a long run of copper pipes inside a frame, with a glass or plastic cover……it’s about the size of, say, a large desk or a double bed and about 6 inches thick. You mount it somewhere that the sun can shine on it. Usually the roof but it could be at ground level. Water runs through the copper pipe and absorbs heat from the sun and then goes into the pipes in the house and to the taps.
An ideal set up would have the solar heater preheating the water before it goes to the tankless heater…should drop your hot water bill 25-40%, because in the summer a solar heater makes water hot enough to not need the boost from the tankless.
References :
been there did that have ‘em all over the place
Yankee Sailer’s answer is perfect. Solar water heating can preheat water for an on-demand, tankless water heater, saving you over 75% of your water heating bill.
I just wanted to add that you need to make sure the tankless water heater used as a backup heater for solar water heating should be a modulating heater, able to sense that the water coming in to it is already hot, and turn down as needed. Some old ones sense water and turn on, regardless of how hot the water is, saving you nothing. Also, some brands will void their warranty if hot water is sent into it.
Bosch makes one that is designed for solar integration, http://www.boschhotwater.com/BoschHotWatercomHome/GasProducts/BoschModel1600PS/FeaturesandSpecs/tabid/1012/Default.aspx.
Here’s a link to solar water heating systems, so you can see the difference. http://www.altestore.com/store/Solar-Water-Heaters/Climate-freezes-Closed-Loop-Systems/Closed-Loop-Systems-for-1-4-People/Closed-Loop-PV-Powered-w-Tank/Indirect-w-80-Gal-Tank-64-SqFt-Collectors/p8142/
References :
AltE Store – http://www.altestore.com/store/
No.
you could use a solar water heater to preheat the water for a tankless water heater, but that would be buying 2 heaters to do one job. What a waste.
As to whether they pay off well that just depends on your time scale. Some reports say that it would take 80 years to repay the cost of buying the system, but if you had to buy a system anyway because the old one was worn out or it’s a new house then why not use solar ?
Don’t believe the marketing hype of companies trying to sell you these systems, claiming to recoup your money in one or two years.
References :
They are quite the opposite in the way they work.
Tankless water heaters can be heated with oil, gas or electricity. They are sometimes called "on demand" systems and are additionally sometimes placed at point of use. A great deal of concentrated energy is used to rapidly heat water as it is flowing through a pipe to your shower or other end use. The advantage of tankless heaters is not having to spend money for the energy used to maintain the heat in a tank full of water. The equipment can cost the same or less than a tank style water heater. Depending upon your type of use they can save you some operating costs (that would otherwise be spent on heat lost from a tank of unused standing hot water.)
The energy from the sun is diffuse. It has to be collected over a large area or over a longer time and then concentrated to become useful. Solar water heaters should always be heating up a storage tank of water (concentrating and storing the heat energy) in order to keep the collector size to a minimum while providing hot water for nighttime and cloudy days. It makes the system most economical. The storage tank is usually larger than a a typical fuel powered hot water cylinder. These systems are initially more costly than conventional hot water systems however over the course of 3 to 5 years you should pay for your investment in fuel savings. The advantage of this system is that you pay nothing for operating costs: the fuel is free.1
Solar water heating systems are typically designed to handle about 80% of hot water usage. The balance requires a back up system. Instant hot water heaters could be used because the equipment is cheaper and there is some space savings. However a tank system will increase the total system storage capacity and will typically be super insulated.
Tank systems are better when there is a relatively constant demand for hot water. There can be less heat loss in heating the water when it is heated at a lower rate.
References :
1 A landlord is usually more concerned with initial expense and not about operating costs. A landlord is far more likely to install a tankless system than any solar powered water heater.