Houweling’s Tomatoes has installed a GE combined
heat and power greenhouse project that captures CO2 for use in plant
The companies say the system — which provides 8.7 MW
of electrical power and 10.6 MW of thermal power for heating the 125-acre glass
greenhouse — is the first greenhouse CHP project in the US. GE has installed
more than 800 gas-engine CHP units in greenhouses globally, representing about
2 GW of power generation plus CO2 fertilization systems.
The system’s total thermal efficiency is about 90
percent, according to GE.
Additionally, greenhouse owner Casey Houweling says
his Camarillo, Calif.-based company – one of the top five tomato growers in
North America – will use the water condensed out of the exhaust gas in its
operations, which will prevent the company drawing about 9,500 gallons per day
from local water sources.
The system uses GE’s J624 two-staged turbocharged
gas engines for the 60 Hz segment — the first 24-cylinder gas engine for
commercial power generation sold in the US. GE says the J624, which it
introduced in 2007, is also the first gas engine featuring double
turbocharging, which makes it more efficient. One Jenbacher J624 can save about
10,700 tons of CO2 per year, GE says, compared to the average grid CO2 production
in the US.
In June, beverage company Diageo
installed two GE Jenbacher CHP units at its Guiness breweries in Ogba
and Benin City, Nigeria.
Western Energy Systems, GE’s authorized US
distributor of Jenbacher gas engines, engineered and installed the Houweling’s
cogeneration plant, which will help move California toward its goal of 4,000 MW of new CHP
generation in the state by 2020, with 1990 as a baseline.
Additionally, Houweling’s says it has invested in a
COdiNOx-Selective Catalytic Reduction system to minimize emissions of carbon
monoxide, hydrocarbons, oxides of nitrogen and toxic air contaminants. The NOx
emissions have been limited to a maximum concentration level of 5 ppmv. This
represents a reduction from Houweling’s current boilers, which are limited to a
maximum of 40 ppmv NOx.
23 August, 2012.