Technical
Low noise emissions are made possible using axial fans with air foil blades .
The chiller offers very low ammonia levels - since the volume in the aluminium microchannel condensers are very low , the amount of ammonia used in the system has been reduced significantly .
Less maintenance is required – every condensing coil can be replaced easily without compromising the machine ’ s operation , allowing maintenance on individual panels to be carried out .
Simple installation – the chiller was designed for installation on any flat surface and is suitable for lifting and transport in containers . It is what is termed a plug-and-play solution .
The chiller ’ s versatility allows you to demand chilled water temperature ranging between + 7 to -35 ° C .
This new technology offers us an opportunity to explore another scenario and use of natural refrigerant – being ammonia . A potent technology that can offer up to 80 to 90 % electrical power savings .
Our industrial industries are used to using generators to satisfy their electricity demand or a portion of it . In the processing industry , especially in food processes , hot water , cold water and sub-zero refrigeration is required . We therefore use a lot of boilers and traditional ammonia refrigeration systems in these applications .
With this background , consider the value of an engineered absorption chiller that use excess heat available on site to open up multiple benefits . The Zudek chiller type is different to better known absorption chillers working on Lithium Bromide ( LiBr ).
“ Extreme heat or cold spells are breaking records year after year .”
Limitation of a LiBr based chiller is that it can only be used for generating chilled water for Airconditioning [ 7 ° C ]. To get to sub-zero temperatures is costly , it is well known that COP of Ammonia based electric chillers do not exceed 1.4 to 1.8 . Therefore , an absorption chiller that offer sub-zero temperatures is twice as beneficial and economical than any other configuration one may think of . RACA
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RACA Journal I April 2021 www . hvacronline . co . za