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Delta t dilemma of chilled water-introduction to basics-part-1-by getco

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فرق درجات حرارة المياه الباردة و معضلة رفع الفرق

Are you facing low cooling effect at your chilled water system?
Are you experiencing low delta-T across Heat Exchanger?
Are finding Air pockets at higher floors?
Are you suffering from high relative humidity?
Are you forced to use all your chilled water pumps?
Are you paying more for less cooling effect?

Did you try everything possible to claim back cooling without positive result?

If your facing some or all the above?

Solution starts from here

Published in: Engineering
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Delta t dilemma of chilled water-introduction to basics-part-1-by getco

  1. 1. 1 ‫معضلة‬‫الحرارة‬ ‫درجات‬ ‫فرق‬ Chilled- Water Delta Ts Dilemma By Eng. Juma Yousef Juma Delta-T Management Awareness Presentation Green Earth Technology Co.
  2. 2. ‫للتأسيس‬ ‫مقدمة‬–Introduction to Basics Load AHU FCU FAHU Cooling Tower
  3. 3. DELTA T (ΔT) 3 ‫عالية؟‬ ‫حرارة‬ ‫درجة‬ ‫بفرق‬ ‫نعنى‬ ‫ماذا‬ WHAT IS HIGH DELTA TEMP.?
  4. 4. ‫عالية؟‬ ‫حرارة‬ ‫درجة‬ ‫بفرق‬ ‫نعنى‬ ‫ماذا‬ What is High Delta Temp.? 5’C-41’F 13’C-56’F
  5. 5. ‫والثانوية‬ ‫اإلبتدائية‬ ‫الدوائر‬ ‫بين‬ ‫الحرارة‬ ‫درجات‬ ‫فرق‬ ‫إختالف‬ ‫مظاهر‬: Appearance of TD of Primary vs. Secondary:
  6. 6. Actual Readings bet. Primacy vs. Secondary Winter Month
  7. 7. Actual Readings bet. Primacy vs. Secondary Summer Month
  8. 8. Typical Chilled Water System Layout DT1DT2 Q1Q2 Q2.1 Q2.2 q2.1.1 q2.1.2 q2.2.1 q2.2.2 District Cooling 1F 2F ES ES FCUFCU FCUFCU q2.n FAHU
  9. 9. 12 ΔT: through cooling unit-Water Side LWT ΔT
  10. 10. ΔT: through cooling unit-Water Side LWT
  11. 11. ΔT: through cooling unit-Water Side LWT
  12. 12. 15 ΔT: through cooling unit-Air Side Control Signal: 0-10 V DC Flow: 1.5 gpm/TR Pressure: 3 Bar EWT: 6’C LWT: 14’C DT: 8’C Temp.: 12.7’C RH%:94.6% DB: 12.2’C W.: 8.6 g/kg Dp: 11.9’C Return Air Temp.: 23’C RH%:55% WB: 16.9’C W.: 9.6 g/kg Dp: 13.5’C
  13. 13. ‫لم‬ ‫يحدث‬ ‫ماذا‬‫الباردة‬ ‫المياه‬ ‫منظومة‬ ‫كونات‬‫عند‬‫إختالف‬‫المياه‬ ‫حرارة‬ ‫درجة‬ ‫فرق‬ ‫الباردة‬‫التبريد‬ ‫أجهزة‬ ‫عبر‬‫؟‬ What will happen to CH. W. Sys. Components when Delta Temp. Differ (Keep Changing)? ‫الشيلرات‬Chillers ‫المضخات‬Pumps ‫أبراج‬Cooling ‫عدادات‬Energy ‫الطالة‬Meters ‫رضي‬Occupants ‫المستخدمين‬Satisfaction ‫التبريد‬Towers ‫التأثير‬Enviro. ‫ال‬‫بيئي‬Effect
  14. 14. 1000 gpm/ Pump 1‫و‬ ‫شيلر‬1‫لتولد‬ ‫تعمل‬ ‫مضخة‬600‫تبريد‬ ‫طن‬@15-‫فرق‬ ‫فهرنهايتية‬ ‫درجة‬ 1-Chiller & 1-Pump is Working to Deliver 600 TR @ DT.: 15’F 600- TR/Chiller 5.5’C 42’F 4.5’C 40’F 14.5’C 58’F 13.5’C 56’F
  15. 15. ‫حالة‬ ‫فى‬‫ثبات‬‫الحرارة‬ ‫درجة‬:‫يمكن‬ ‫طن‬ ‫كم‬‫نمله‬‫عند‬ ‫المياه؟‬ ‫تدفك‬ ‫كمية‬ ‫تغيير‬ When Delta Temp. is fixed, how many TR can be transfer when flow change? gpm Delta-T TR 500 4 83.3 600 4 100 700 4 117 800 4 133 900 4 150 1000 4 167 1400 4 233 1100 4 183 1200 4 200 1500 4 250 1800 4 300 2000 4 333 2500 4 417 3000 4 500 4000 4 667
  16. 16. 4‫و‬ ‫شيلرات‬4‫لتولد‬ ‫تعمل‬ ‫مضخات‬600‫تبريد‬ ‫طن‬@4-‫فرق‬ ‫فهرنهايتية‬ ‫درجات‬ 5-Chillers & 5-Pumps are Working to Deliver 600 TR @ DT: 4’F 4000- gpm Pump 600- TR/Chiller 12.2 ’C 54’F 4.5 ’C 40’ F 14.5 ’C 58’F 6.7 ’C 44’ F
  17. 17. ‫مكيف‬ ‫حالة‬ ‫فى‬16‫فرق‬ ‫على‬ ‫يعمل‬ ‫طن‬16‫فهرنهايتية‬ ‫درجة‬ In case of 16 TR AHU working at Delta-T: 16’F How the AHU will perform at lower Delta-T? ‫الفرق؟‬ ‫إنخفاض‬ ‫عند‬ ‫المكيف‬ ‫أداء‬ ‫سيكون‬ ‫كيف‬ TR DELTA- T GP M 16 16 24 15 15 24 14 14 24 13 13 24 12 12 24 11 11 24 10 10 24 9 9 24 8 8 24 7 7 24 6 6 24 5 5 24 4 4 24 3 3 24 2 2 24 1 1 24 0 0 24
  18. 18. DC-District Cooling Plant . ‫تبريدالمياه‬ ‫محطة‬
  19. 19. 3’F 6’F 9’F 12’ F 16’ F ‫بناية‬ ‫فى‬ ‫تبريده‬ ‫المطلوب‬ ‫الحرارى‬ ‫الحمل‬ ‫كان‬ ‫إذا‬(600‫طن‬)‫سيعمل؟‬ ‫شيلر‬ ‫فكم‬ If we have a Building Load 600 TR: How many Chiller we will Work? 5000 gpm 4000 gpm 3000 gpm 2000 gpm 1000 gpm Chiller Cap. 600 TR/each
  20. 20. ‫فعال‬ ‫غير‬ ‫تشغيل‬ Inefficient Operation ‫بناية‬ ‫فى‬ ‫تبريده‬ ‫المطلوب‬ ‫الحرارى‬ ‫الحمل‬ ‫كان‬ ‫إذا‬(600‫طن‬)‫سيعمل؟‬ ‫شيلر‬ ‫فكم‬ If we have a Building Load 600 TR: How many Chiller we will Work? ‫فعال‬ ‫تشغيل‬ ‫خيار‬ Optimum Operation 13’C 56’ F 4.5’ C 40’ F 6.7’ C 44’ F 4.5’ C 40’ F
  21. 21. This Why DC-Providers: Fine for Low DT
  22. 22. ‫الباردة‬ ‫المياه‬ ‫حرارة‬ ‫درجات‬ ‫فرق‬ ‫إنخفاض‬ ‫أسباب‬ Reasons for Low CH. W. Delta-T
  23. 23. ‫جيتكو‬ ‫مع‬:‫ال‬‫تبريد‬‫هذه‬ ‫بعد‬ ‫مضمون‬‫التعديالت‬ With Getco Cooling is Guarantee After these Corrections
  24. 24. Thank you! Looking forward to serve-U better jumayjuma@gmail.com https://www.facebook.com/greenearthtechnologycompany/ https://www.facebook.com/groups/780970768708352/ www.alsadarah.net https://www.linkedin.com/in/juma-yousef-j-saleh-%D8%AC%D9%85%D8%B9%D8%A9- %D9%8A%D9%88%D8%B3%D9%81-%D8%AC%D9%85%D8%B9%D8%A9- %D8%B5%D8%A7%D9%84%D8%AD-9941b049/ Eng. Juma Yousef Juma CEO & Business DESelopment Manager, Getco Green Earth Technology Co. Follow us for the latest news and information on Solutions of HVAC Challenges.

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