ARTICLES

Biogas Generation

(copied from Natural Systems Ltd - http://www.naturalsystems.co.nz/)

The first market ready product is BioGenCool^TM, an on-farm energy system that transforms cow effluent into power that is used to heat and cool while providing greatly reduced electrical load.
The system has been painstakingly and carefully researched and developed with the intention of how technology can deliver energy from renewable sources, at low-cost and with benefits to the environment through a reduction in greenhouse gas emissions.

Environmentally Friendly

The BioGenCool^TM process extracts the biogas (methane gas and carbon dioxide) from the cow effluent using novel biodigester technology. After production it is then cleaned and used as a fuel in a co-generation plant to generate electricity.

The process converts the volatile organics into biogas, leaving the resulting supernatant liquid low in bacteria, nitrogen rich, cleaner and more readily assimilated than raw manure. This therefore makes it paddock ready for disposal around the farm.
 

Sustainable Energy

The conversion of the biomass produced by a typical dairy herd is sufficient to provide the energy to meet most of the demand for vacuum pump, hot water and milk chilling requirements.
 

Improved Milk Quality

The quality of milk is directly related to the temperature at which it is stored. Currently in NZ most milk is stored at below 7 degrees C, though an EU Standard requires that milk be stored at 3 degrees C.

The BioGenCool^TM system provides rapid efficient cooling to 3 degrees C using a secondary heat exchange subsystem and delivers milk for transportation that is foam free.
 

The Future

NSL Managing Director - Ian Bywater

‘ ...the timing is perfect for us.The Canterbury project has been very successful and fully demonstrates how BioGenCool can save up to 35% of the energy used in the dairy shed. In addition to this there are savings in water consumption through recycling by using ‘greenwash’ in the dairy shed yard...’