How to Build a Solar Home Heater with Plastic Bottles

How to Build a Solar Home Heater with Plastic Bottles

7 noviembre, 2019 Off By admin

In this article we share a simple idea for you to build a homemade solar water heater in a simple and economical way, this device can help you lower the costs of energy bills,

A report from the Provincial Council of Engineering of Tucumán detailed the ways to create, cheap and simply solar heaters.

How to Build a Solar Home Heater with Plastic Bottles

Building a low-cost solar heater with recycled material is something very simple and useful , especially for those who need to save money on gas from bottles or use wood to heat water. It is also of interest to those who support ecology, aware of the importance of implementing alternative energy sources, and people who like manual labor.

It is about harnessing solar energy that has no cost and using plastic bottles that are thrown away . The idea, in simple terms, is to create a small greenhouse in each bottle and pass an irrigation hose (polyethylene) inside it. In this way, the heat that is trapped in the bottle and which is then absorbed by the hose (which is black) is transferred to the water and so it can be heated and save fuel such as gas, electricity or firewood.

Renewable energy .

It can be said that, in this way, a device is constructed to heat water, for sanitary use, with totally renewable energy. It is estimated that a type family of four people uses approximately 80 liters of hot water per day in the kitchen and bathroom . One can build this heater of the size you want, according to the capacity of hot water required for daily use, because it is armed with columns of 6 bottles, with 2 meters of hose each.

As many columns as you want can be coupled in parallel and the roof of the support house is used. Because once built, this ecological heater is placed on the roof of sheet metal of the house, and if it is loaded with 100 liters of water, the weight must be supported by the roof structure.

How to Build a Solar Home Heater with Plastic Bottles

How to build a homemade solar heater step by step.

The procedure to build the solar heater is as described below:

  1. Collect at least 30  disposable soda bottles of a liter and a half, all the same (important) and remove the label.
  2. Buy at a hardware store or branch business, 12 meters of black irrigation hose  (it is important that it be that color) and ¾ inch in diameter, 8 “T” joints and two elbows, a Teflon roll and two keys éricas inch spherical.
  3. Have an electric drill and a cha inch cup wick . If that tool is not available, you can patiently use a kitchen saw knife to pierce the bottles.
  4. A hole is made at the base of each bottle, equal to the diameter of the hole that the bottle has in the sector where the lid goes. Once the holes in the 30 bottles are made, five sections of two meters each of black polyethylene hose must be cut. Next, a bottle is attached to the other, inserting the neck of one into the hole drilled in the base of another, to form a column of six bottles, and then a piece of hose of 2 meters is inserted into it. Repeating that step five times, the 30 bottles have been used and a “grill” is available, which is finished by putting elbows at the ends and “T” joints in the middle. The heater manifold is thus assembled as indicated in the figure.
  5. This grill is placed in the sun, on a sheet roof and facing north , preferably, then water is introduced from the bottom. After 15 minutes of exposure to the sun’s rays, water rises from the top at about 45 or 50 degrees, ready to use. This happens by a physical principle called “thermosiphon.”
  6. An insulated container can be added to store hot water , for which recycled 200 liter cans are used, which have not been used to transport hazardous chemicals. The type used for the commercialization of olives in bulk is ideal, with which a homemade thermo-tank can be built, so that the water heated by the sun, during the day, can also be used at night.

Low cost.

Finally, it is necessary to emphasize that this simple device, whose  cost can be around 50 and 100 pesos , can be built by the children of the schools as technology work and in neighborhood clubs or neighborhood centers as a community task, or simply in the home, as work and hobby of the whole family.

There is a lot of information on this topic on the Internet and a group of professionals from different entities are currently giving free courses on this topic and others on socially appropriate technology in our province.

This group is made up of the Professional Council of Engineering of Tucumán, through its Department of Energy in Community Tasks, the Faculty of Exact Sciences and Technology of the National University of Tucumán, with its Secretariat of Extension. The Provincial State supports this project through the Ministry of Science and Technology and is already being implemented by a private company dedicated to renewable energy.