How to make a homemade solar water heater

With technology developed by the INTA (National Institute of Agricultural Technology of Argentina), we can build solar water heater to heat water economically and conveniently. These designs ensure hot water for communities with limited access to energy, providing them with alternative energy sources to meet domestic needs.

This model will provide water at a temperature of 45 ° to 50 ° C. Although it is not a high efficiency heater like industrial appliances, it has a much lower cost and we can manufacture it ourselves- same, with materials that we buy in a hardware store and with common tools.

Are you interested: 8 proposals for domestic solar heaters.

According to UN data, one in five people in the world do not have access to electricity and some 3 billion people depend on biomass for cooking and heating. For this reason, it is important to develop devices that are cheap and easy to build, using locally available materials, like the one we share today with INTA. A hot water tank that heats and stores water using solar energy all day long.

According to INTA data, this solar water heater can reduce electricity or gas consumption by 65%.

A guide for building a flat plate solar water heater model, the principles of operation, its components and the step by step for its construction, as well as the main recommendations for its use and maintenance. We can also replace or recycle materials by adapting this technology to our region, our possibilities and our environment.

How does a solar water heater work.

The principle of operation of the solar water heater is the thermosiphon.

1. Cold water enters the hot water tank from the tank.
2. Cold water flows through a pipe or spout towards the bottom of a grill.
3. The water circulates through a grid of black pipes which trap solar radiation and heat it.
4. A transparent cover helps generate a greenhouse effect which prevents heat loss.
5. Following the same general principle, hot water rises and flows into the container through a pipe or an upper spout.

How a solar water heater works

The parts of the solar water heater.

The elements that we will need for the construction of the water heater are:

  • Pipe grid.
  • Isothermal box.
  • Hot water tank.
  • Water distribution pipes.
The parts of the solar water heater



If you are interested in this type of project, the assembly and assembly details of the system can be viewed in this complete construction guide.