The entropy wheel or enthalpy wheel (latter denotes humidity exchange) is a high efficiency (up to 90%) heat exchanger typically seen in commercial buildings for rapid fresh air exchanges. Fresh air exchange means wasting a massive amount of heating/cooling energy, but heat recovery ventilators assist in recovering that energy that would be lost.
According to the author of this project, counter-flow and cross flow heat exchangers are the type typically available in the consumer housing market. He believes a thermal wheel could boost the efficiency in a smaller space. He made his own ventilator to fit in 12″high and 22″ cavity.
Below is the system diagram. It looks a little complicated!
For this project, he ueses below parts,
- Coroplast Sheet, Home Depot Model # WC4896-10
- Cypress PSOC 4200 proto board, Digikey 428-3344-ND : Super low cost with Cortex M0 coupled to programmable digital logic and programmable analog
- Nordic Semiconductor RF module
- Arduino Uno
- Arduino Ethernet shield
- Motor driver
- Wheel drive motor
- Cheap bathroom ventilation fans
Below is the video to introduce the project
For more detail about the project, you can visit below link.
Https://hackaday.io/project/2517-entropy-wheel-heat-recovery-ventilator
Tags : 201408, Ethernet Shield, W5100, Home Automation, Sensing & Gathering
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