District Dairy case study0 pages

Dresser-Rand Environmental Solutions
®

Gensets for Biogas
application in a Dairy

District 45 Dairy LLP, Hancock, Minnesota Case Study
Dresser-Rand® supplied
two Guascor® SFGLD
560 engines for Power
Generation in a Dairy
factory in Minnesota.

The Opportunity
The District 45 Dairy LLP dairy factory, located on 320 acres of land in Hancock,
Minnesota, USA, has approximately 5,560 cows. These cows generate
approximately 5,900,000 cubic feet of manure each year.
When organic materials – like manure – decompose in a warm, airless
environment, they release biogas; storing the manure in a sealed, airtight, heated
digester increases biogas production.
With more than 5,000 cows, District 45 Dairy
LLP produces a large amount of biogas – a
valuable asset when using a cogeneration
system to treat it. The dairy factory realized the
benefit of installing a combined heat and power
(CHP) module to capture the biogas and used
it to their advantage.

The Solution
The CHP plant installed at District 45 Dairy
LLP uses three Dresser-Rand Guascor®
SFGLD 560 generator sets that provide 2.4
MWe of power. The gen sets warm up the
condensates back-flow for the steam boilers
from the dairy factory and produce process
steam for internal use.
The CHP plant uses condensing heat
exchange technology that produces heat
and power for the factory, beneficial for dairy
farms with a year-round demand for hot water.
As a result of installing this innovative and
environmentally friendly technology, the factory
received a green certificate.