When Sykes Seafoods leased a 15,000m2 warehouse for their new National Distribution Centre, Space Engineering successfully tendered and were awarded the refrigeration package.
Based in the North West of England, the facility consists of three temperature controlled chambers – one +1°C chilled chamber and two large -22°C frozen chambers.
Since the three chambers were a mix of chill and frozen with two different evaporating temperatures, and taking the environment impact into consideration, CO₂ transcritical booster packs were selected.
Based on the client specification the refrigeration packs were designed with consideration for system efficiency, safety and easy operation & maintenance. Three identical CO2 boost packs were used with each pack taking 33% of the total refrigeration load. On each pack, the heat reclaim is configured for warm glycol defrost and freezer room underfloor heating.
Each industrial CO₂ pack incorporates:
Liquid refrigerant sub-cooling loop was designed in each pack to ensure a good performance of the liquid expansion valve. The highly efficient Bitzer LSPM compressors are used throughout.
Floor mounted coolers were selected for each of the chambers. This negated the need for any additional structural steelwork support, and the considerable costs associated with it.
There were a number of challenges to consider, some of these being the heat reclaim, long pipe runs and plant room congestion.
The refrigeration scope also included airlock dehumidification, ductwork and air-blade systems as well as a load shedding system.
Working to a tight programme, the refrigeration was commissioned and operational, with chambers down to temperature, for when the client needed to bring in product.
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