TABLE OF CONTENTS

AMMONIA INSTALLATIONS BY GEA GRENCO AT LARGEST DUTCH VEGETABLE AND FRUIT PROCESSOR
Introduction
Dutch company Vezet is one of the companies helping to meet the demand for
packaged fruits and vegetables. This family-owned business has grown as the range
and type of produce it can process has increased. Today the company is the largest
vegetable and fruit processor in the Netherlands and produces 220 million units
annually, expected to reach 330 million units in 2015. Vezet supplies major retail chains
and food service companies with a wide variety of high-quality fresh cut, ready-to-cook
vegetables, ready-to-eat salads and fruit salads.
An essential part of the process is keeping the food at the right temperature to preserve
freshness. This is where refrigeration and cooling comes in. But, like many companies,
Vezet has the challenge of replacing its refrigeration to meet regulations to eliminate
the use of ozone-depleting man-made refrigerants in favour of natural refrigerants
such as ammonia. This replacement has to be done without interrupting production.
About the company
GEA Refrigeration Technologies is a leading global
group in industrial refrigeration. GEA designs,
engineers, installs, and maintains innovative key
components and technological solutions.
More information at:
www.geagroup.com
Contact Information
Henrik Winther
henrik.winther@geagroup.com
About the System
Currently GEA Grenco is assisting Vezet to produce a master plan to transfer all old
HCFC/HFC installations to ammonia refrigeration installations. The first ammonia plant
was installed in 2007 – separate from the main factory – from which a cold carrier is
supplied to various storage rooms. The second phase, in 2010, was to connect the
ammonia plant to the main factory. This involved partly demolishing a factory building
without obstructing the flow of goods between the two factories.
GEA Grenco supplied and installed air handling units, air coolers, compressors,
condensers and heat exchangers – all tailor-made to Vezet’s requirements. The
ammonia compressor room established in 2007 was erected in a temporary position
and will be re-used in a later phase of the master plan on a different location on the
premises.
This plant now includes the following:
• Two Grasso Duopack units of 800kW (-11°/+35°C) each, and a receiver with two
shell & plate heat exchangers
• An evaporative condenser and two GEA Küba air-cooled condensers with SS tubes,
which can be found in the hybrid condensing part of the plant;
• A secondary system with the food safe cold carrier Temper® set up in a separate
cold system (-8°/-2,5°C) and a separate warm system (+24°/+30°C).
74