Order on WhatsApp click here: wa.me/message/...
Buy online www.eroletech.com
For any help contact us on whatsapp: +91 7007957715
home delivery and cash on delivery available
Description:
Millions live around the world without access to hot water. Whether it is for drinking or showering, having sufficient hot water should not be a luxury. We looked at economic ways to provide hot water for showering and cleaning, and as a preheater to produce clean water.
This document shows how to construct a simple solar based water heat exchanger. The heat exchanger consists of a long length of copper tubing with water being continuously cycled through it to be heated by the sun.
We also show how to construct a simple sun tracker that follows the sun as it moves across the sky to ensure the heat exchanger receives the maximum amount of solar energy each day.
Note: The instructions provided are very general with the hope of illustrating the concept and the idea rather than providing detailed steps to replicate our design. There are many improvements that can be made and some of these are listed in the “Improvements” section. We give permission and encourage readers to improve upon our design in any way, as long as it is not for commercial use and credit is given to this document.
Step 1: Materials
General
Masking tape
Duct Tape
Solar Absorption “Coil” ½ inch outer diameter Copper Tubing (13 ft or longer, preferably soft tubing that can be hand-bent)
Copper bending tools (optional for soft tubing, mandatory for hard tubing)
Matte Black Paint/Spraypaint (Needs to be able to adhere to the copper. In this case we used black “Rust-oleum Painter’s Touch” primer)
Plastic Zip-Ties (various sizes)
Solar Collector
Aluminium foil
Aluminium foil tape
Material for making the risers for copper tubing (we used foam, can use wood or other metal clamps)
Plastic food wrap (for clear cover). Could also use a sheet of acrylic or glass
Housing for copper coil. We used a cardboard box as a prototype, however, we recommend a wooden box that is resistant to rain and moisture
⅜ inch inner diameter rubber tubing (8ft or more, we used Tygon® tubing)
Water Reservoir
Bucket (preferably insulated). Food safe is required for potable water, but optional if water is not for consumption e.g showering
Steel wool/scotch brite/sandpaper for roughing up bucket. Also used to clean copper tubing
Foam for insulation
Submersible Pump - we used a 7 watt AC aquarium pump with a flow rate of 227.8L/hr
Rotation Base
Heavy wood base approximately 1m x 1m
Thin wood platform approximately 0.8m x 0.8m (enough to support the solar collector). This will be the top rotating platform
Vertical rotation shaft (obtained from a printer or similar, or suitably sized metal rod in general)
4x 8mm ID standard skateboard bearings
4x 8mm bolt and nut1x Motor (we used the following solarbotics.co...) and motor mount (www.thingivers...)
Bearing holder (www.thingivers... and the motor mount can be made from metal, wood, or other suitable material since 3D printers are not yet widely available in developing regions.
motor gear (and corresponding larger gear) (www.thingivers... sized gears of different materials can be used by moving the motor mount on the top board to the correct location.
Various wood screws and washers
Arduino or similar microcontroller
Adafruit Motor Shield
Battery - Rechargeable e.g Lithium Polymer, NiMH etc. Ideally lightweight (not a car battery).
2x LDR light sensors
2x 10kΩ resistors
Step 2: Making the Copper Heat Exchanger - Bending
Making the Copper Heat Exchanger - Bending
The first step is to bend the copper into a coil.
This can be done by hand for softer copper tubing (careful as not to kink the tubing) or with copper bending tools
Bend very slightly with even spacing to introduce a curve. repeat with more bends until the copper is in a circular coil shape
Keep in mind that the coil must fit the housing that you intend to place the coil in.
Step 3: Making the Copper Heat Exchanger - Painting
Making the Copper Heat Exchanger - Painting
Next, the copper heat exchanger is painted matte black to increase the absorption of solar energy. We used a spray-painted primer.
Clean the coil with water and steel wool or suitable soft abrasive such as scotch brite pads
Cover 1cm of each end with painter’s tape to prevent paint entering the tubing
Follow instructions specific to the paint for details. We used very short bursts from about 30cm away to provide even paint coverage. start with a very thin layer of paint and allow to dry. repeat until there is a thin even layer of coverage with no visible copper
Remove tape from ends after final layer dries.
Негізгі бет Sun tracking solar water heater mechanical engineering final year project
No video
Пікірлер: 2