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‫معضلة‬‫الحرارة‬ ‫درجات‬ ‫فرق‬
Chilled- Water Delta Ts Dilemma
By Eng. Juma Yousef Juma
Q&A How to Avoid DC Provider Fines for Low Delta-T?
Green Earth Technology Co. & Delta Solutions Co.
‫للتأسيس‬ ‫مقدمة‬–Introduction to Basics
Load AHU FCU FAHU
Cooling Tower
DELTA T (ΔT)
3
‫عالية؟‬ ‫حرارة‬ ‫درجة‬ ‫بفرق‬ ‫نعنى‬ ‫ماذا‬
WHAT IS HIGH DELTA TEMP.?
‫عالية؟‬ ‫حرارة‬ ‫درجة‬ ‫بفرق‬ ‫نعنى‬ ‫ماذا‬
What is High Delta Temp.?
5’C-41’F
13’C-56’F
‫حال‬ ‫هو‬ ‫كيف‬‫فرق‬‫حرارة‬ ‫درجة‬‫المبادل‬ ‫طرفي‬ ‫على‬‫؟‬
How’s CHW Delta-T across the PHX?
5’C-41’F
13’C-56’F
6’C-43’F
14’C-58’F
Primary Secondary
Actual Readings bet. Primacy vs. Secondary Summer Month
While Delta-T in Primary is 7.9’C Found Delta-T in Secondary is 1.1’C
Actual Readings bet. Primacy vs. Secondary Summer Month
The Main KEY
for managing the
Delta-T is laying
between a Fact
that we have to
clarify and
simple LAW to
understand, as
follows:
‫إل‬ ‫الرئيسي‬ ‫المفتاح‬‫دارة‬
‫حرارة‬ ‫درجات‬ ‫فرق‬
‫على‬ ‫الباردة‬ ‫المياه‬
‫الحرارى‬ ‫المبادل‬ ‫طرفي‬
‫يجب‬ ‫حقيقة‬ ‫في‬ ‫هو‬
‫قانون‬ ‫و‬ ‫توضيحها‬
‫فهمه‬ ‫يجب‬ ‫بسيط‬,‫كم‬‫ا‬
‫يلي‬:
How to Avoid Fines ‫؟‬ ‫الغرامات‬ ‫تتجنب‬ ‫كيف‬
The 4ΔT’s: to ensure Efficiency, Performance & Comfort
9
9 9
10
4‫لدرجات‬ ‫فروق‬‫الحرارة‬:‫لضمان‬‫والر‬ ‫والفعالية‬ ‫الكفاءة‬‫احة‬ ‫الحقيقة‬:
The Fact
First: What is the relation between Ton-Cooling
and Delta-T?
‫أوال‬:‫الحرارة؟‬ ‫درجات‬ ‫وفرق‬ ‫التبريد‬ ‫أطنان‬ ‫بين‬ ‫الرياضية‬ ‫العالقة‬ ‫هي‬ ‫ما‬
Q(tons)=
[(GPM)(ΔT)]/24
Heat Transfer Equation
1
‫القانون‬
Simple Fact
Ideal Condition ‫المثالية‬ ‫الحالة‬
[(GPM)(ΔT)]
/24
[(GPM)(ΔT)]
/24
Ideal Condition ‫المثالية‬ ‫الحالة‬
[(GPM)(ΔT)] [(GPM)(ΔT)]
Ideal Condition ‫المثالية‬ ‫الحالة‬
[(GPM)(ΔT)] [(GPM)(ΔT)]
When ‫تكون‬ ‫عندما‬
Then ‫يكون‬ ‫عندها‬
So Solution is ‫يكون‬ ‫الحل‬ ‫إذن‬
‫مع‬‫جيتكو‬:‫ال‬‫تبريد‬‫بعد‬ ‫مضمون‬‫التعديال‬‫ت‬
With Getco: Cooling is Guarantee After
Corrections
Thank you! Looking forward to serve-U better
jumayjuma@gmail.com
https://www.facebook.com/greenearthtechnologycompany/
https://www.facebook.com/groups/780970768708352/
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. &
Delta Solutions Co.
Follow us for the latest news and information
on Solutions of HVAC Challenges.

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Delta t dilemma of chw-q&a how to avoid dc provider fines for low delta-t-by getco co