Located in Marsden Park, the facility consists of a 30,000m² temperature and humidity controlled warehouse area, 5,000m²of manufacturing and packaging facilities and 4,000m² of office areas.
Three air-cooled liquid chillers are located in the external plant area and provide the Warehouse, Manufacturing and Packing areas with low temperature chilled water for air conditioning and dehumidification. The chilled water system uses glycol to provide chilled water flow temperatures as low as 0°C for the purposes of dehumidification. The same chillers provide a total heat reclaim option delivering heating hot water to the building’s air handling systems.
The main warehouse is served by ten air handling units located externally and supply air at high level via fabric ductwork to deliver air in and around the racking spaces
Each air handling unit is provided with coiling coils suitable for the low temperature chilled water system and heating hot water coils that are connected to the chiller’s heat reclaim heating water loop. The air handling unit’s cooling coils are responsible for reducing the space temperature and are also the first stage of dehumidification. Warehouse internal design temperature is set for 14.0c and 65% humidity
The HVAC system has been designed to remove the moisture generated from incoming pallets distributed over 3-off thermal zones at a constant inflow of pallets throughout the week. A two-stage dehumidification control strategy allows adjacent zone AHU’s to assist in the removal of moisture. A feature of the HVAC Building Management System (BMS) is the ability to manually “pre-dehumidify” a Warehouse Zone prior to a large delivery of pallets.
