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Wifi-enabled solar heating
Jostedal Lau Daniel Yeo St Joseph’s Institution
Wifi-enabled solar heating Jostedal Lau Daniel Yeo St Josephs - - PowerPoint PPT Presentation
Wifi-enabled solar heating Jostedal Lau Daniel Yeo St Josephs - - PowerPoint PPT Presentation
Wifi-enabled solar heating Jostedal Lau Daniel Yeo St Josephs Institution INTRODUCTION Solar Energy Abundant and renewable Not efficient Uses only 20% of solar energy Aims Hybrid solar panel utilising Peltier Coolers
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Solar Energy
- Abundant and renewable
- Not efficient
- Uses only 20% of solar energy
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Aims
- Hybrid solar panel utilising Peltier Coolers
- Heats water to 60 Degrees Celsius
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PROTOTYPE
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Materials used
- Utilises Peltier effect
○ Transfers heat
Peltier cooler in between metal pipes
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DESIGN
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Side view of prototype View of circuit inside solar panel
Design Of Prototype
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Diagram of Prototype
Water from tank Water to tank Solar Panel Aluminium Peltier Cooler Metal Rod
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EXPERIMENTS
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- Solar panel was replaced with hot water from water bath
- Peltier Cooler powered by DC power supply
- Peltier Cooler transfers heat from hot water to tap water
Testing set-up
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Set-up used for testing.
Testing set-up
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Design of set-up
Diagram of set-up used to collect data
From water bath To water bath Peltier cooler (cool side facing down, hot side facing up) Pipes Room temperature water from tank Hot water drained to sink Temperature sensor (thermistor) Clamp
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METHODOLOGY
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Methodology
- Water bath temperature at 30 to 70 Degrees Celsius
- Peltier cooler powered with 7.6 to 8.3 Watts
- Final temperature of tap water was stabilised before
recorded
- Experiment was done thrice for the average
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Methodology
- Flow rates of 0.40 and 1.6 grams/s
- Clamp to control the flow rate of water
- Flow rates measured by collecting the volume of water in
30 seconds then dividing it by 30. ○ average flow rate was obtained after repeating it thrice.
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Methodology
- Temperature change and Coefficient of Performance were
calculated
- COP = KW heating / KW electricity
- If the COP is above 1, it means that output energy is more
than input energy.
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RESULTS
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Results
Table of results
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Results
Graph of change in temperature versus water bath(solar panel) temperature
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Results
Graph of coefficient of performance (COP) versus water bath(solar panel) temperature
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Results
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Practicality
- Slow flow rate is negated by multitude of solar panels
- More Peltier Coolers will be used
- Possible to reach 60°C
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EXPERIMENT TWO
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Second Test
- Checks for usefulness of Peltier Cooler
- Set-up was similar, one had a Peltier Cooler on while the
- ther did not
- The difference in temperature change for both
experiments were drastic
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RESULTS
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Results (2nd experiment)
When the Peltier Cooler is off
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Results (2nd experiment)
When the Peltier Cooler is on
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CONCLUSION
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- Hybrid solar panel is viable
- Large scale project is required for residential use
Conclusion
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LIMITATIONS
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- Set-up has not tested in actual conditions
○ Results are not 100% accurate
- The temperature sensors were also not properly
calibrated. ○ Although factored in standard deviation and power calculation, it could be inaccurate
Limitations
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FURTHER STUDIES
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- System of storing the heated residential water should be
developed.
- Solar panels must recirculate the tap water till 60 Degrees
Celsius
- System to monitor the solar heater hybrid for convenience
Wifi-Enabled Progression will be useful
Further Studies
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We would like to thank the following people for helping us to complete the project: Professor Lee Choon Kiat, our Supervisor Mr Ng Shu Lit, our Teacher Mentor