Another advantageous feature of the Icebank system is a conduit arrangement wherein a main water supply conduit extends from the Icebank storage tank to appropriate places within the supermarket where a tap-in connection is provided at each produce area for supplying cold water from the main water supply conduit to the heat exchange means in the produce area. A main pump is provided for pumping cold water from the Icebank storage tank through the main water supply conduit, and separate pumps are provided at each produce area for pumping the cold water from the main water supply conduit through each heat exchange means. As a result, the main pump requirements are determined by the resistance to flow in the main water supply conduit alone, while each refrigeration or cooling unit has an individual pump to handle its own requirements.
