Take a wooden box similar to a drawer, put a 4-5 cm thick foam board (or an old quilt) on the bottom and around it, and cover the wooden box with a piece of glass ( or a plastic sheet).
Put 1-2 inside, with a diameter of 15-20 cm and a height of 60-100 cm. It is a container filled with water made of galvanized sheets. The exterior of the container is painted black. and there is a hole at the bottom. The water inlet has a water outlet at the top, which is connected to the hot water tap in the house. There is an overflow port at the top. When the water is full and overflowing, turn it off. water inlet valve.
Such a simple solar water heater is made. Water temperatures can reach 60 degrees in summer and 45 degrees in winter.
How do elementary school students make simple solar water heaters?
Materials required: cardboard, aluminum foil, wood shavings or strips, scissors, handsaw, white gluereed, glass tube or clear plastic tube
Steps:
1. First make a support with wood chips, as shown below.
2. Then fold the cardboard and stick it to the backing with white glue as shown in the picture below.
3. Use white glue to glue the foil to the cardboard as shown below.
4. Adjust the angle of the cardboard and foil to form a concave arc, as shown below.
5. Cut two pieces of wood the same length as the glass tube to make a support. Stick it in the middle of the backing as shown below.
6. Install a post that can adjust the angle of the concave arc behind the bracket and the cardboard. Fill the glass tube with water, place it on the stand, and adjust the angle of the concave arc so that the glass tube is right at the focus of the reflector reflecting sunlight, as shownin the image below.
How to produce simple solar energy by yourself?
Use a drink can and spray it with black paint. Put it in the sun, it is the simplest and most primitive solar water heater.
Method 1: Use a drink can and spray it with black paint. Placed under the sun, it is the simplest and most primitive solar water heater.
Method 2: 1. Fill a plastic bottle (preferably a beverage bottle) with an appropriate amount of water.
2. Prepare some mirrors.
3. Place mirrors around the plastic bottles and place them in the sun to heat the water using the reflection principle.
The solar water heater is a heater that converts solar energy into thermal energy, thereby transforming water at low temperatures. Heated to high temperatures to meet people's use of hot waterin life and production.
Materials: cans, pigment foam, reflective materials (CDs, mirrors, foil if not available), box (preferably iron)?
< p> Production method:1. Paint the box black.
2. Paint the foam black and glue it to the can.
3. Place the can in the box and adjust the angle so that it is perpendicular to the sunlight.
4. Put reflective materials on the cans.