Installation of a Co-Gen Unit at Houweling Nursery Case Study

Eagle West Industrial Moving Team Install of Co-Gen Unit at Houweling Nursery


Eagle West Industrial Moving team recently assisted Houweling Nursery with the installation of a Co-Gen unit. This new unit weighed in at 32 Tons and will be the main energy source for the nursery as well as supplying all of the

necessary CO2 for the plants. The team utilized a 270 Ton Leibherr crane as well as a rail system to load the units into the bays. See more of the project photos here.

Engine in Place

Engine in Place

About the Houweling Nursery Co-Gen Project:

Our new 8.8 megawatt heat-and-power co-generation technology at our Camarillo Greenhouse is the first of its kind in the United States to capture traditionally wasted heat, water and C02 for use within the greenhouse. Having successfully completed the California installation, we are in the process of trying to bring the same technology to our Delta, BC facility.

• 8.7 MW of electric power
• 10.6 MW of thermal power
• CO2 for fertilization of produce

Here’s a quick overview of how the system works:

Project Background:

Houweling Nurseries Ltd. (dba, Houweling Tomatoes) operates a 20-hectare greenhouse facility in Delta, B.C., producing both fresh tomatoes and propagated vegetable seedlings for other greenhouse vegetable growers. The heat and CO2 requirements are supplied by five natural gas fired boilers which have an estimated efficiency of approximately 84%. The estimated emissions produced by the current operation of the natural gas fired boilers is 23.7 tonnes annually.

The boilers operate throughout the day to produce heat which is stored in a 1.5 million gallon reserve tank and subsequently used as required in the greenhouse. Some amounts of the CO2-enriched exhaust is used to promote a healthy crop and vegetable production. An additional 1,000 tonnes of liquid CO2 is purchased for our seedling propagation department, as the CO2 generated from the current system is not acceptable for growing seedlings.

Moving Unit into Place

Moving Unit into Place

This limitation creates additional waste during the months of October to February as crop production is reduced and seedling propagation is at its peak production. During this period the boilers are only in operation for heating generation. As a result, the exhaust from the boilers is released into the atmosphere, while liquid CO2 must still be purchased.


Houweling’s Tomatoes proposes the installation of two 4.4 MW GE Jenbacher natural gas fired, combustion engine driven, cogeneration units. Cogeneration (cogen) through combined heat and power (CHP) is the simultaneous production of electricity with the recovery and utilization of heat.

The CO2 enriched gases from the engines will be treated using selective catalytic reduction (Hanwel COdiNOX system) to reduce the NOx levels in the exhaust, meeting the requirements of the seedling crops as well as promoting healthy crop enhancement in our tomato production area. This flue gas cleaner ensures the flue gases from CHP gas engines are converted into food grade CO2, which can then be used immediately for plant and seedling fertilization. This will eliminate the need to purchase, transport and store liquid CO2. The anticipated emissions from the Co-Gen units will be less than 11.5 tonnes annually, reducing our emissions output by at least 50%. To view the complete air modeling report: click here.

Customer: Houweling Nursery

Date: January 2014

Project: Unload and install 32 Ton Co-Gen Unit


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