Construction pics

Here are some pictures of the construction site:

Laying the preliminary tubing that will allow oxygen to enter the system, then rise. Heat producing bacterial processes use oxygen as an electron acceptor.

 Inserting water tubing to the system. 3 100ft coils were placed 18'' apart for a total of 300ft. This would allow for plenty of time for the water to become heated. Hay can also be observed on the outside to help preserve the overall shape and insulation.

Tubing was spaced 6in apart with the use of stakes. This separation would allow for better insulation and a more successful heating process. 

Building the second layer at night. Bark mulch was chosen due to its ideal surface area. Manure was mixed in (10%). The materials were chosen not only for their surface area, but also for there Carbon and Nitrogen contents. 

Completed pile. The system was hosed the entire time to provide an ideal moisture content. Moisture is ideal for living organisms...too dry of a system would slow or stop the composting process. 

More Sources

Scholar Article:

Scholarly Articles 

• http://link.springer.com/article/10.1007%2Fs002310050127#page-1

        - 1.S.H.Lin. A heat transfer model for biological waste water treatment system. 

• http://en.cnki.com.cn/Article_en/CJFDTOTAL-NYGU200303047.htm

        - Cai Longjun, Feng Zhejun. Calculation and test of heat-transfer coefficient of heating pipe of water heating system in gutter-connected greenhouse 

• http://lib.dr.iastate.edu/cgi/viewcontent.cgiarticle=1233&context=abe_eng_pubs                                                                                                                                                                                                                                           - 3.John A.Nienaber, James A. DeShazer, Hongwei Xin, Peter E. Hillman, Jong-Tseng Yen. Measuring Energetics of Biological Process. 

Sources

Good Sources

• http://www.compostpower.org/sites/default/files/Design%20Guide%203.pdf

    - Describes process of constructing the compost heating system.

• http://compost.css.cornell.edu/science.html

     - Goes over many engineering aspects of compost heating system.


Scholarly Articles 

• http://www.hindawi.com/journals/ijce/2010/627930/abs/

        - Energy from waste: Reuse of compost heat as a source of renewable energy

• http://aem.asm.org/content/41/6/1321.full.pdf+html

        - Composting process control based on intersection between microbial heat output and temp.

• http://www.nswaienvis.nic.in/Waste_Portal/Research_papers/pdf/A_survey_of_bacteria_and_fungi_during_composting.pdf                                                                                                                                                                                                                                                                   - Survery of bacteria and fungi occurring during composting and self-heating processes.

• Irvine, G., E. R. Lamont, and B. Antizar-Ladislao. "Energy from Waste: Reuse of Compost Heat as a Source of Renewable Energy." International Journal of Chemical Engineering 2010 (2010): 1-10. Proquest. Web. 2 Nov. 2015.                                                                                                                                                                                                                                               - * Talks about heat exchange calculations. Investigation of the potential for the collection and      reuse of compost head as a source of renewable energy. Cost analyzed among other                  sustainable technologies to evaluate efficiency. 

• Insam, Heribert. "Molecular Analysis of Bacterial Community Succession during Prolonged Compost Curing. FEMS Microbiol Ecol." ResearchGate. N.p., 04 June 2008. Web. 02 Nov. 2015. <http://www.researchgate.net/publication/5319395_Molecular_analysis_of_bacterial_community_succession_during_prolonged_compost_curing._FEMS_Microbiol_Ecol>.

         - * Microbiology of composting