COLD STORES


Using biomass energy for cleaner electricity, heating and cooling


L


eading frozen vegetable company Greenyard Frozen will receive new Entrade biomass energy units that will provide clean electricity, heating and cooling for two UK sites.


32 new biomass units will replace old gas boilers and electric heating units at Greenyard Frozen’s operations at Kings Lynn and Boston, achieving overall CO2


emission reductions of


approximately 10,000 tons per year. The 32 modular plants will be fueled by wooden pellets, converted from discarded vegetable boxes using Entrade’s high temperature cogeneration carbon-conversion process.


Four of the E4 power plant units will be situated in two stacked 40 foot containers and work in accordance with the combined cooling, heat and power (CCHP) principle. In this process, solid biomass such as wood waste,


pressed into pellet form, is thermally converted at high temperature. The generated syngas is used as fuel in a gas engine that powers a generator, with minimal particle emissions and ash as a byproduct.


The total capacity of the units will be approximately 1.8MW electric and 3.8MW thermal energy. Each unit has an overall capacity of 55kW electric and 120kW thermal. For cooling, generated heat is converted directly by silica gel adsorption chillers that transfer excess heat into cold water provided to the vegetable blanching process. Chilled water is therefore ensured onsite, replacing the old energy intensive compression refrigeration machines.


Entrade power plants can run on a variety of woody biomass. The company is developing its technology to be fueled by a range of other materials, including nutshells, plastic waste


and discarded tyres. Greenyard Frozen’s set-up will include a pellet line installed onsite that processes fuel pellets from wooden vegetable boxes currently used by Greenyard in large quantities and normally discarded at the end of their life.


UK-based renewables project developer Mistral Renewable Energy will install the units in the coming weeks, while Los Angeles-based company Arensis financed the project and will handle ongoing operation.


With annual sales revenues of almost €4.25bn, the Belgian Greenyard Group is considered one of the world’s market leaders in fresh and prepared fruits and vegetables.


The company’s production of frozen food is handled by the Greenyard Frozen division, formerly Pinguin, which operates the large Boston and Kings Lynn production sites in eastern England.


Hawco


www.acr-news.com


September 2017 37


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