•Determine which data is most useful for evaluating the success of the compost process (Oxygen, BOD of leachate, temperature, CO2, etc).
•sensors remain calibrated, polyethelynes like PEX are fairly transparent to infrared (IR) light, but sensors sharing a housing must take isolated measurements
• housing failures
• Maintenance hours
Sensor Hub Evaluation
•Are the graphs easy to create, manipulate and easy read?
•Can users receive useful SMS alerts? like ‘‘the pile is too cold” or “the pile is too dry”
•failure rates of service and housing integrity
•hours of labor for setup and maintenance, market value of development time, full cost analysis.
•what is our network reliability?
•Corners get hot
•Consistent moisture throughout
•No odor released-ports sealed
•Installing sensors reasonable
•leachate evaporation system sized to handle leachate.
•Significantly warms air used to aerate compost, compared to without greenhouse
•Setup/breakdown labor hours
•plants balance the exchange of oxygen.
•air quality: mold count and ammonia content
• power requirements for fans
Finished compost Evaluation: (based on NSF 41 7.1.4)
•Fecal coliform <200 cfu/g
•Moisture < 75% by weight
•No objectionable odor after removal and after storage in a wet and dry container for 7 days.
•If there is significant leachate, it will be tested for coliform levels, BOD5 and pH after a residence time in the artificial wetland.
•No contact with unfinished compost is required
•good air quality. requiring a mask effects quality of life. low molds, ammonia.
• Loading (labor)