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4. As compared to scroll chillers, specific energy consumption is higher than 40%. IF present
condition is considered as standard operating condition, average consumption per day is 4500

KWH per day i.e. average 1800 AED per day. Annual consumption of the chiller would be
1,372,500 KWH i.e. 521,500 AED.

5. IF the 40% difference is considered, average running cost difference between scroll chillers
and Recip. Chillers would be 208,620 AED per annum. Over 5 Years operating span, the saving
would be app. 1 Million AED.

6. Average plant requirement at present condition is derived as 150 TR (Heat load handled by
both chillers). Hence management may think of installing a scroll chiller of capacity 175 or
suitably 200 TR (Most preferable is 100 TR x 2).

7. Condenser & Evaporator cleaning and removal of slime to increase the delta T , automation

of Secondary pump with PID Control & VFD would also yield saving within ROI of 1 to 1.50 Year.

8. Detailed Engineering is required to explore the possibilities of savings mentioned in Option
No. 6 or 7.