How Does A Solar Water Heater Work?
A solar water heater can be a great investment for anyone who wants to save money, conserve energy, and help the environment.
But how does it actually work?
If you are looking for a detailed answer, then look no further.
In this article, we will discuss how do solar water heaters work, different types of solar heaters, and which type of solar water heating is best for you.
The Working Concept Of Solar Water Heaters
Basically, the solar water heater works by using the sun’s energy to heat up water.
To accomplish this task, there are two main components that make it happen: collectors and storage tanks.
The collector is usually what you see on top of your roof or in your garden (if you have one).
It’s usually made from some sort of heat-absorbing material like gravel or sand that absorbs heat from sunlight and transfers it to your hot water pipes.
This generated heat is then used to heat up the water in your storage tanks and a thermostat monitors how much heat is in the system and turns off power when necessary to maintain a temperature level.
And that’s how a solar water heater works, pretty straight forwards, HA!
Types Of Solar Water Heaters
1. Flat Plate Collector Solar Heaters (FPC)
A flat plate collector is exactly how it sounds. It’s a big sheet of metal that absorbs heat and transfers it to the water tank surrounding the solar panels.
This type of system works best if you live in an area where there are long periods without rainfall, meaning your tank will constantly be getting heated by the sun for hours on end.
2. Evacuated Tube Collector Solar Heaters (ETC)
An evacuated tube collector is how it sounds again, only the difference here is that your tubes are made of glass.
The space between them contains a vacuum which allows for more effective heat transfer and keeps the solar panels extremely efficient even in the toughest weather conditions.
These are the most common type of solar water heater, and they work best in warm climates where there’s a lot of humidity.
The biggest benefit to these systems is how low-profile they are compared to other types of solar heaters, making them perfect for homes where space comes at a premium!
How Does A Thermosiphon Solar Water Heater Work?
A thermosiphon solar water heater work heater works by utilizing the passive natural convection and conduction of water.
In other words, this device creates a cyclic fluid flow where cold water falls to the bottom of the tank, pushing hotter water (less dense) to the top of the tank, so you can use it.
Some thermosiphon heaters come with solar collectors as well.
What Is The Difference Between Passive And Active Solar Water Heaters?
A passive solar water heater work system works by having the fluid be heated as it passes through your panels.
This means that there is no storage tank or other components required to make this type of heating unit, making them perfect for remote areas where you don’t have any external power sources available.
They are also much cheaper to produce, so if you are on a budget you might want to consider going with this type of heating unit.
On the other hand, an active solar water heater work system is a bit more complex in how it functions, but the general idea remains the same.
This time when you go through your return line on your cooling cycle there will be a system present that will allow the water to be pumped back through your panels and heated up.
This means you need a pump for this type of heating unit, which might not do well in some areas due to how much power it’ll require on average.
You can also have an active solar water heater work with storage tanks, so you can have a backup at all times in case something goes wrong or if you need to heat up water quickly.
This means with an active system you’ll also have a bit more work to do on how it works, so this is better for those who are handy and enjoy tinkering with different systems.
Related article: How To Make A Solar Water Heater?
How Does A Solid Fuel Water Heater Works?
A solid fuel water heater works system heats up the fluid by burning wood or other types of biomass inside your heating unit.
This means that you will need to keep buying more and more logs as they run out, which can get expensive over time.
However, it is also much easier to find the materials required for this type of solar heat, so it’s better for people who live in an area that doesn’t get a lot of sun exposure.