Literature Review for Open Source Hot plate and Stirrer: Difference between revisions

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hot plate magnetic stirrer

Literature Review

[Low-Cost Magnetic Stirrer from Recycled Computer Parts with Optional Hot Plate]
Armando M. Guidote, Giselle Mae M. Pacot, and Paul M. Cabacungan, "Low-Cost Magnetic Stirrer from Recycled Computer Parts with Optional Hot Plate",Journal of Chemical Education 2015 92 (1), 102-105, DOI: 10.1021/ed500153r
Abstract Magnetic stirrers and hot plates are key components of science laboratories. However, these are not readily available in many developing countries due to their high cost. This article describes the design of a low-cost magnetic stirrer with hot plate from recycled materials. Some of the materials used are neodymium magnets and CPU fans from discarded computers and recycled electrical components from old circuit boards. This prototype was compared with a commercial magnetic stirrer with hot plate. It was noted that high temperatures were reached at similar rates, and the stirring speed was also comparable between the two. With this prototype, which costs 80% less than commercials ones, magnetic stirrers with hot plate can be readily available to enhance teaching and learning in science laboratories that need them most.

Construction

Parts

Heater

o Heating Element
  - Major area of failure?)
o Plate Cover

Stirring Unit

o Motor
o Magnet
  -Electromagnet
  -Solenoids programmed like a stepper motor
  -cover magnet in aluminum foil to avoid damage d/t heating?
o Stir Bar
o (Rotarty encoder for speed sensor?)
o Solid-State stirrer?
o Outsource stirrer?

Housing

o Temperature probe stand/holder? 
o Temperature probe?
   - RTD
   - Type K thermocouple?
o Digital Display?
o

Power/Electronics

o AC Power
o DC Power

References

- Thermocouple vs RTD(Temperature Sensors)

 o https://blog.lesman.com/2012/02/09/which-temperature-sensor-do-i-need-rtd-or-thermocouple/

- Open Source DIY Mag Stirrer

 o https://www.youtube.com/watch?v=Kn-eLq7-Fbw&feature=youtu.be
 o https://www.sciencemadness.org/whisper/viewthread.php?tid=71217

-1962 Hot Plate/Stirrer Patent

 o https://patents.google.com/patent/US3028476A/en

@@ Line 16: / Line 16: @@
 ==Literature Review==
-[[https://pubs.acs.org/doi/abs/10.1021/ed500153r ====Low-Cost Magnetic Stirrer from Recycled Computer Parts with Optional Hot Plate====]]
+[[https://pubs.acs.org/doi/abs/10.1021/ed500153r <big>Low-Cost Magnetic Stirrer from Recycled Computer Parts with Optional Hot Plate</big>]]<br>
 '''Armando M. Guidote, Giselle Mae M. Pacot, and Paul M. Cabacungan, "Low-Cost Magnetic Stirrer from Recycled Computer Parts with Optional Hot Plate",Journal of Chemical Education 2015 92 (1), 102-105, DOI: 10.1021/ed500153r'''<br>
 '''Abstract''' Magnetic stirrers and hot plates are key components of science laboratories. However, these are not readily available in many developing countries due to their high cost. This article describes the design of a low-cost magnetic stirrer with hot plate from recycled materials. Some of the materials used are neodymium magnets and CPU fans from discarded computers and recycled electrical components from old circuit boards. This prototype was compared with a commercial magnetic stirrer with hot plate. It was noted that high temperatures were reached at similar rates, and the stirring speed was also comparable between the two. With this prototype, which costs 80% less than commercials ones, magnetic stirrers with hot plate can be readily available to enhance teaching and learning in science laboratories that need them most.
 ==Construction==