Final Commssioning of Digestor

Final Commissioning of Digestor (13 August 2010, 10 am - 6pm, SVF Farm)

Finally got the digestor up without leakage! Methane system Commissioned!!

1. Sealed Balloon Capture with Hose Ring & Silicone Glue
2. Fixed all leakages in this sequence:
   contact glue/silicone/contact glue/silicone + duct tape to provide final mechanical strength
3. Stirrer Sealed (for air tightness)
   
4. Final Loading Capacity = 30L with 12 vol% concentration;
   idea of 30% headspace : 70% waste discarded
5. Gantt chart explained with my 5-stage plan

Stirrer (center 1" pipe) sealed with End-cap


Finally, the completed 2-Stage ATAP Digestor System


What is this 5cm spider doing in my gas pipe? If i had taken a deeper breath to check if the balloon was holding, it would have ended up in my mouth !!!


End of the Day, Meeting with Dr Han (5pm-6pm):

1. With professional design, came out with a improved system
2. To be constructed by Dr Han during Exams period between 29/08/10 - 10/09/10
3. With his advices, we managed to design an:

• Air-tight system
  
• Natural Circulation System for heater
• DIY 2-way check valve to create vacuum in new CH4 capture (improved fuel value)
  
• Digestor Structural stability
• sealant for stirrer vs. static agitation

Lesson Learnt: It's because we spent so much time on DIY-ing the Digestor, we easily understood what Dr Han said in one go.

With every failure you'll learn something new and propel yourself to greater heights.


Mr Kon, we will:

1. Send you the gas detector writeup by monday 16/08/10
2. Draw out a new P&ID and send to Dr Han by Friday 20/08/10
3. Update you our BREAKTHROUGH on Friday 20/08/10
4. Get Archi to auto-cad the system for us

Once exams end, we will conduct the experiments with the 5-stage plan, gas detectors expected to arrive between 08/10/10 - 15/10/10 (optimistic).

Kian How,
Signing off on 13 August 2010, 10.30 pm