This document provides an agenda for discussing the practical advantages of VRF/VRV HVAC systems, how to achieve LEED points by installing them, challenges faced, and a comparison to VWV/VWF systems. Key topics include efficiency, flexibility, reliability, and individual thermal comfort control allowing occupants to adjust temperature, air speed and humidity. Achieving high ambient cooling capacity and alternative refrigerants are discussed as ongoing challenges.

2. The Giant vs. the Shorty
Slow Thinking
vs.
Fast Thinking

3. Agenda:
• Practical advantages of
VRF/VRV System.
• Achieve LEED Points by
Installing VRF HVAC Sys.
• Challenges
• Comparison of VRV/VRF vs.
VWV/VWF
• Conclusion
‫أجندة‬:
•‫بمنظومة‬ ‫للتكييف‬ ‫عملية‬ ‫فوائد‬
‫في‬.‫أر‬.‫في‬.
•‫نقاط‬ ‫من‬ ‫مزيد‬ ‫تحقيق‬ ‫يكنك‬ ‫كيف‬‫لييد‬
‫الخضرا‬ ‫المباني‬ ‫بين‬ ‫للتفاضل‬‫ء‬.
•‫تحديات‬.
•‫التكييف‬ ‫منظومتي‬ ‫بين‬ ‫مقارنة‬
‫البارد‬ ‫بالماء‬ ‫أو‬ ‫بالغاز‬ ‫المتغيرة‬.
•‫النتيجة‬.

5. A complete package which
can add the value in air
conditioning segment for
smart comfort of smart cities
Efficiency‫كفاءة‬
Flexibility‫مرونة‬
Versatility‫براعة‬
Modernity‫حداثة‬
Reliability
‫اعتمادية‬
Comfort
‫الراحة‬

6. ‫السطح‬ ‫بجلسة‬ ‫نستمتع‬ ‫فقط‬ ‫اآلن‬-Now only we can enjoy our Roof

9. With Verity of Indoor – ‫الداخلية‬ ‫األجهزة‬ ‫في‬ ‫كبير‬ ‫تنوع‬ ‫مع‬
‫نقاط‬ ‫من‬ ‫بمزيد‬ ‫للفوز‬ ‫يؤهل‬ ‫مما‬ ‫صغرت‬ ‫مهما‬ ‫التكييف‬ ‫بمناطق‬ ‫الدقيق‬ ‫التحكم‬ ‫من‬ ‫مكننا‬ ‫التنوع‬ ‫هذا‬‫ليي‬‫د‬
Accordingly we can provide precise Zone Control that can contribute
points toward LEED Certificate

10. LEED BD+C: Retail | v4 - LEED v4
Innovation: Acoustic performance Possible 1 point
Intent
To provide workspaces and classrooms
that promote occupants’ well-being,
productivity, and communications
through effective acoustic design.
‫النية‬
‫الدراس‬ ‫والفصول‬ ‫العمل‬ ‫مساحات‬ ‫لتوفير‬‫ية‬
‫واإلنتاجية‬ ‫الركاب‬ ‫راحة‬ ‫تعزز‬ ‫التي‬
‫ف‬ ‫صوتي‬ ‫تصميم‬ ‫خالل‬ ‫من‬ ‫واالتصاالت‬‫عال‬.

11. LEED BD+C: New Construction | v4 - LEED v4
Thermal comfort: Possible 1 point• Intent
To promote occupants’ productivity,
comfort, and well-being by providing
quality thermal comfort.
•‫النية‬
‫والرف‬ ‫والراحة‬ ‫الركاب‬ ‫إنتاجية‬ ‫لتعزيز‬‫اهية‬
‫الجودة‬ ‫الحرارية‬ ‫الراحة‬ ‫توفير‬ ‫خالل‬ ‫من‬.
Thermal comfort control
Provide individual thermal comfort controls for at least 50% of
individual occupant spaces. Provide group thermal comfort
controls for all shared multioccupant spaces, and for any
individual occupant spaces without individual controls.
Thermal comfort controls allow occupants, whether in
individual spaces or shared multioccupant spaces, to adjust at
least one of the following in their local environment: air
temperature, radiant temperature, air speed, and humidity.
https://www.usgbc.org/node/2612656?return=/credits

12. REPLACE
RELIABILITY
‫مرونة‬
‫اإلستبدال‬
EASY
LIFTING
‫الرفع‬ ‫سهولة‬

15. Auto Refrigerant Charging & Cycling –‫اآللي‬ ‫الشحن‬
‫السالمة‬ ‫احتياطات‬ ‫كل‬ ‫رغم‬ ‫شخصيا‬ ‫لى‬ ‫حدث‬ ‫ما‬ ‫هذا‬:‫التبري‬ ‫حرق‬‫د‬
This once happen to me with all the precautions I
took: Freeze Burn

16. • Japanese:
• * Mitsubishi
Heavy
Industries
• * Fujitsu
• * Hitachi
• * Mitsubishi
Electric
• * Daikin
• * Panasonic
• * Toshiba
• * Yanmar
Trane
Lennox
Industries
Johnson
Controls
Carrier
•Korean:
•LG
•Samsung
Indian
Bluestar
Italian
Aermec
• Gree
• Haier
• Hisense
• Midea
• Bright
• Dekon
Bosch
‫العالم‬ ‫حول‬ ‫المصنعون‬
World Manufacturers

17. ‫فعالية‬ ‫أكثر‬ ‫يكون‬ ‫أن‬ ‫الممكن‬ ‫من‬ ‫المناطق‬ ‫تبريد‬
District Cooling can be more
Efficient
But ‫ولكم‬

18. ‫السحاب‬ ‫لناطحات‬ ‫األمثل‬ ‫األخضر‬ ‫الحل‬ ‫هو‬ ‫المناطق‬ ‫تبريد‬ ‫بأن‬ ‫قناعتي‬ ‫رغم‬...‫لكن‬
Regardless my personal opinion that DC-Plant can be
the ultimate Green Solution for Sky Scrappers … But

19. But VRF Guarantee Comfort that
Occupants Deserve independent of
others (Loose Control and/or Fins)
‫ولكن‬...‫أ‬ ‫المتغير‬ ‫الغاز‬ ‫لدفع‬ ‫منظومة‬ ‫قدرة‬‫قدر‬
‫األب‬ ‫لشاغلي‬ ‫المستحقة‬ ‫الراحة‬ ‫توفير‬ ‫على‬‫راج‬,
‫غرامات‬ ‫أو‬ ‫تقصير‬ ‫أي‬ ‫عن‬ ‫تامة‬ ‫باستقاللية‬

21. ‫خيار‬ ‫بالهواء‬ ‫المكثف‬ ‫تبريد‬
Air Cooled CU is one Option

22. ‫ب‬ ‫المكثفات‬ ‫تبريد‬‫الماء‬
‫آخر‬ ‫عملي‬ ‫خيار‬
Cooling CUs by
Cooling Tower

23. Features of Water Cooled VRV-‫بالماء‬ ‫مبردة‬ ‫منظومة‬ ‫مميزات‬
1- Brazed plate heat
exchanger
2- High efficiency compressor
3- Smooth sine wave DC
inverter
4- Integrated water loop
control
5- Compact design

24. Indoor can be installed in any dead area

25. How to Achieve LEED Points by Installing VRF HVAC Sys.
AE:
‫الجوي‬ ‫والغالف‬ ‫الطاقة‬
Energy & Atmosphere:
VRF Can achieve up to
21 Points
40-49 Points 50-59 Points 60-79 Points 80-110 Points
EQ:
‫البيئية‬ ‫الجودة‬
Environmental Quality:
VRF Can achieve up to
7 Points
Total
29
Points
WE:
Water Efficiency:‫الماء‬ ‫فعالية‬
1 Points

26. 10 @ 2016/7 9 @ 20148 @ 2015

27. ‫والصحية‬ ‫الفنية‬ ‫التحديات‬
Tech. & Safety Ch.
Technical
Engg.
‫و‬ ‫فنية‬
‫هندسية‬

28. ‫منها‬ ‫التخلص‬ ‫خيارات‬ ‫أو‬ ‫الحرارة‬ ‫من‬ ‫لالستفادة‬ ‫طرق‬
Ways to Utilize Heat and Options to reject
But we are not utilizing this Feature @ ME - ‫منطقتنا‬ ‫في‬ ‫الميزة‬ ‫هذه‬ ‫نوظف‬ ‫لم‬ ‫لكننا‬ ‫و‬
‫نقاط‬ ‫ممكن‬
‫لييد‬
Possible
for LEED
Points

29. ‫األكبر‬ ‫التحدي‬–‫التبريد‬ ‫سعة‬
Main Challenge – Cooling Capacity
Cooling operating conditions:
Indoor temp. of
27°C DB, 19.0 °C WB,
and
outdoor temp. of
35°C DB.
‫التكييف‬ ‫تشغيل‬ ‫ظروف‬
‫الداخلى‬ ‫التصميم‬ ‫ظروف‬:
27‫الجاف‬ ‫للهواء‬ ‫سيليزية‬ ‫درجة‬
19‫الرطب‬ ‫للهواء‬ ‫سيليزية‬ ‫درجة‬
‫الخارجى‬ ‫التصميم‬ ‫ظروف‬:
35‫الجاف‬ ‫للهواء‬ ‫سيليزية‬ ‫درجة‬
‫المرتفعة؟‬ ‫الحرارة‬ ‫بأجواء‬ ‫خاصة‬ ‫تبريد‬ ‫كفاءة‬ ‫سنجد‬ ‫متى‬
When we’ll get Cooling Performance
according to High Ambient?

30. Is R-410A the Right Alternative for R-22
• Other Challenge:
Alternative Refrigerant
Evaluation for High-Ambient-
Temperature Environments:
R-22 and R-410A Alternatives
for Mini-Split Air Conditioners
•‫آخر‬ ‫تحدى‬:
http://info.ornl.gov/sites/publications/files/Pub59157.pdf
For more Information follow link: ‫المعلومات‬ ‫من‬ ‫لمزيد‬-‫الرابط‬ ‫راجع‬:LEED BD+C: New Construction | v4 - LEED v4
Enhanced refrigerant management: Possible 1 point

31. OLD
VRF
Chiller
So: Chiller have the Advantage at this point - ‫أفضل‬ ‫النقطة‬ ‫هذه‬ ‫في‬ ‫الشيلر‬ ‫إذن‬
‫الدفيئة‬ ‫الغازات‬ ‫خيارات‬

32. Refrigerant Concentration Limit (RCL)-‫التبريد‬ ‫غاز‬ ‫تركيز‬ ‫حدود‬
•‫بها؟‬ ‫االلتزام‬ ‫المطلوب‬ ‫السالمة‬ ‫مقاييس‬ ‫هي‬ ‫ما‬
•What are theses Safety Standards?
‫السالمة؟‬ ‫بمقاييس‬ ‫اإللتزام‬ ‫يمكن‬ ‫كيف‬
How to Meet Safety Standards?
• ANSI/ASHRAE Standard 15-2013
• RCL 26 per Standard 34-2013.
• RCL 25 per International Mechanical Code.
• Institutional and industrial occupancies (Section 7.2.1, 7.2.2)

33. Oil Return Challenge- ‫آخر‬ ‫تحدى‬–
‫الزيت‬ ‫إسترجاع‬
How to ensure
full return &
prevent
accumulation in
Indoor Units
‫تضمن‬ ‫كيف‬
‫و‬ ‫الزيت‬ ‫رجوع‬
‫فى‬ ‫تجمعه‬ ‫عدم‬
‫الداخلي‬ ‫الوحدات‬‫ة‬
So: Chiller have the Advantage at this point - ‫أفضل‬ ‫النقطة‬ ‫هذه‬ ‫في‬ ‫الشيلر‬ ‫إذن‬

34. ‫آخر‬ ‫تحدى‬–‫قطع‬ ‫وتوفير‬ ‫والصيانة‬ ‫التشغيل‬‫الغيار‬
O&M Challenge along with Spare parts
It will not be expected
to find anther supplier
for spare parts other
than manufacturers
any time soon.
‫توفر‬ ‫المتوقع‬ ‫غير‬ ‫من‬
‫عن‬ ‫البديلة‬ ‫الغيار‬ ‫قطع‬‫د‬
‫عدى‬ ‫القطع‬ ‫موردى‬
‫ق‬ ‫وقت‬ ‫فى‬ ‫المصنعين‬‫ريب‬
Knowing that every 2/3 Yrs we have new generation- ‫كل‬ ‫أن‬ ‫عرفنا‬ ‫إذا‬ ‫خاصة‬2/3‫جديد‬ ‫جيل‬ ‫تقديم‬ ‫يتم‬ ‫سنوات‬

35. FAHU Connected to Chilled WaterFAHU Connected to Condenser
Complex Installation,
More space required
More cabling
Ice formation Challenge-more
maintenance
FA-Fresh Air Units ‫الهواء‬ ‫تجديد‬-
Easy to control, No Ice Formation
Simple Installation
So: Chiller have the Advantage at this point - ‫أفضل‬ ‫النقطة‬ ‫هذه‬ ‫في‬ ‫الشيلر‬ ‫إذن‬

36. Utilize Condensate Water from FAHU
for Irrigation can LEED Point
Outside Air Condition SA Fresh Air Condition
10.6
g/kg
20 KG(Ltr)/Hour
for each 1000 cfm

37. ‫آخر‬ ‫تحدى‬–‫الغ‬ ‫قطع‬ ‫وتوفير‬ ‫والصيانة‬ ‫التشغيل‬‫يار‬
O&M Challenge along with Spare parts
•
•

38. LEED BD+C: New Construction | v4 - LEED v4
Enhanced commissioning: Possible 6 points
• Intent
To further support the design, construction, and
eventual operation of a project that meets the
owner’s project requirements for energy, water,
indoor environmental quality, and durability.
•‫النية‬
‫ف‬ ‫وتشغيل‬ ‫وبناء‬ ‫لتصميم‬ ‫الدعم‬ ‫من‬ ‫لمزيد‬‫ي‬
‫مشر‬ ‫متطلبات‬ ‫يلبي‬ ‫مشروع‬ ‫المطاف‬ ‫نهاية‬‫وع‬
‫والجود‬ ‫والمياه‬ ‫الطاقة‬ ‫على‬ ‫للحصول‬ ‫المالك‬‫ة‬
‫والمتانة‬ ، ‫المغلقة‬ ‫األماكن‬ ‫في‬ ‫البيئية‬.
https://www.usgbc.org/node/2613042?return=/credits
Requirements: Implement, or have in place a contract to implement, the following commissioning process
activities in addition to those required under EA Prerequisite Fundamental Commissioning and Verification.
Commissioning authority
Option 1. Enhanced systems commissioning (3-4 points)
Path 1: Enhanced commissioning (3 points), OR
Path 2: Enhanced and monitoring-based commissioning (4 points)
Achieve Path 1.
AND/OR; Option 2. Envelope commissioning (2 points)

39. Must Install a
Central
Controller DDC
for Each Group
of CH. Pumps,
FAHU, AHU &
Connected VAVs
‫من‬ ‫مكون‬ ‫كل‬‫مختلف‬ ‫مورد‬..‫نحدث‬ ‫كيف‬
‫الخالف؟‬ ‫حالة‬ ‫في‬ ‫نلجأ‬ ‫لم‬ ‫و‬ ‫التكامل؟‬
Each piece of the control system from
a supplier …. How to Integrate? Whom
will help in case of dispute?

40. ‫واحد‬ ‫مصدر‬ ‫من‬ ‫المكونات‬ ‫كل‬..‫و‬ ‫محتوم‬ ‫التكامل‬
‫واحدة‬ ‫المسؤولية‬ ‫تحمل‬ ‫جهة‬
All pieces from one supplier ….
Integration is certain … and one
responsible party

41. LEED BD+C: New Construction | v4 - LEED v4
Advanced energy metering: Possible 1 point
• Intent
To support energy management and
identify opportunities for additional
energy savings by tracking building-level
and system-level energy use.
•‫النية‬
‫ال‬ ‫توفير‬ ‫فرص‬ ‫وتحديد‬ ‫الطاقة‬ ‫إدارة‬ ‫لدعم‬‫طاقة‬
‫ع‬ ‫الطاقة‬ ‫استخدام‬ ‫تتبع‬ ‫خالل‬ ‫من‬ ‫اإلضافي‬‫لى‬
‫النظام‬ ‫ومستوى‬ ‫النظام‬ ‫مستوى‬.
Install advanced energy metering for the following:
all whole-building energy sources used by the building; and
any individual energy end uses that represent 10% or more of the total annual consumption of
the building.
The advanced energy metering must have the following characteristics.
Meters must be permanently installed, record at intervals of one hour or less, and transmit data
to a remote location.
Electricity meters must record both consumption and demand. Whole-building electricity meters
should record the power factor, if appropriate.
The data collection system must use a local area network, building automation system, wireless
network, or comparable communication infrastructure.
The system must be capable of storing all meter data for at least 36 months.
The data must be remotely accessible.
All meters in the system must be capable of reporting hourly, daily, monthly, and annual energy
use.
https://www.usgbc.org/node/2612855?return=/credits
M
MM
M
Record for 36
Months

42. ‫األناب‬ ‫طول‬ ‫زيادة‬ ‫عند‬ ‫التبريد‬ ‫كفاءة‬ ‫نقص‬ ‫أسباب‬ ‫ما‬‫يب؟‬
Reasons for reduction in cooling capacity with long Piping?
So: Chiller have the Advantage at this point - ‫أفضل‬ ‫النقطة‬ ‫هذه‬ ‫في‬ ‫الشيلر‬ ‫إذن‬

43. WHAT IF THE PIPES LENGTH EXCEEDS THE LIMITATIONS?‫الطول‬ ‫زيادة‬ ‫تأثير‬ ‫ما‬
‫الضواغط‬ ‫تعطل‬ ‫أن‬ ‫األسباب‬ ‫لهذه‬ ‫يمكن‬...‫أيضا‬ ‫و‬
EXTREMELY DESTROY THE COMPRESSOR .. In Addition
The temperature of discharge gas will be sharply
increased for lifting. ‫للرفع؟‬ ‫الضخ‬ ‫حرارة‬ ‫ترتفع‬ ‫كم‬
The viscosity of oil will be declined.‫الزيت‬ ‫لزوجة‬ ‫عن‬ ‫ماذا‬
‫التبخير‬ ‫وضمان‬ ‫الضواغط‬ ‫إلى‬ ‫الزيت‬ ‫رجوع‬ ‫استمرارية‬ ‫نضمن‬ ‫كيف‬
Oil will be very difficult to return to the compressor.
The capacity will be influenced, and have a great
decrease. ‫التمديدات‬ ‫طول‬ ‫بسبب‬ ‫التبريد‬ ‫سعة‬ ‫ستنخفض‬ ‫هل‬
Can we make modification or extension if need it? ‫والتغيير‬ ‫التعديل‬ ‫إمكانية‬

44. Operating Range ‫التشغيل‬ ‫مدى‬
But we are not utilizing this Feature @ ME - ‫منطقتنا‬ ‫في‬ ‫الميزة‬ ‫هذه‬ ‫نوظف‬ ‫لم‬ ‫لكننا‬ ‫و‬

45. Anther Explanation for this Benefit-‫الميزة‬ ‫لهذه‬ ‫إضافي‬ ‫توضيح‬

46. Connectable indoor units: Percentage ‫بالمنظومة‬ ‫المتصلة‬ ‫الداخلية‬ ‫الوحدات‬ ‫زيادة‬ ‫نسبة‬
Manufacturer – ‫المصنع‬* Connectable indoor units: Percentage
AHI Carrier SMMSi 130%
Blue Star-VRF IV Plus 130%
Chigo CMV-C Series 130%
Daikin VRV IV Tropical:130%-Non Tropical: 200%
Gree GMV IV 135%
Hitachi Set Free FSXN
Hisense Hi Flexi-VRF 130%
LG Multi V IV 130%
Mitsubishi City Multi Y Series 130%
O’General V-III Tropical:130%-Non Tropical: 200%
Panasonic ECOi-EX Tropical:130%-Non Tropical: 200%
Samsung DVM S 130%
SKM VRF-SV
Trane VRF-TVR5G 130%
York YVAHR 130-150%
But we are not utilizing this Feature @ ME - ‫منطقتنا‬ ‫في‬ ‫الميزة‬ ‫هذه‬ ‫نوظف‬ ‫لم‬ ‫لكننا‬ ‫و‬

47. ‫المشروع‬:‫مدرس‬ ‫تكييف‬‫ة‬
Project: School A/C 380
TR
‫أفهم‬ ‫كيف‬:‫تنوع‬‫األحمال‬‫الحرارية‬How I understand: Load Diversity-

48. 4 Tons
Morning
2 Tons
Morning
What is the sum of
the zone peak
loads?
5 Tons
Afternoon
3 Tons
Afternoon
What is the
block load?
Solar HL Diversity-‫الشمس‬ ‫موقع‬ ‫تغير‬ ‫مع‬ ‫الحرارى‬ ‫الحمل‬ ‫اختالف‬
380
TR

49. Room @ Diff Orientation
in Organ Building
1.75
TR
2.25
TR
2.75
TR
3.25
TR
Summer Sun
Winter Sun
‫في‬ ‫مختلفة‬ ‫مساقط‬ ‫من‬ ‫غرف‬
‫األضالع‬ ‫ثماني‬ ‫مبنى‬

50. 4.0 4TR
2.5
3TR
2TR
3,25
2,75
2,25
1,75
Room Side Design Selection
West Side 3.25 4
North Side 1.75 2
South Side 2.25 2.5
East Side 2.75 3
Total 10 11.5
15.0%
Heat Load Calculation
Selection Increase%

51. Selection Increase Total Load on for …
380 TR as per HL 438 TR after Selection15% more by
Selection
For CHW after SelectionDX

52. VRV
VRF
Ducted
(DS)
Split
CHW
VWV
VWF
Decorative
(Deco)
Split
Now we’ll Compare between –‫بين‬ ‫مقارنة‬ ‫سنجرى‬ ‫واآلن‬

53. EquipmentType Units VWVSys. VRFSys. DSUnits DecoUnits ‫ألجهزة‬‫ا‬‫نوع‬
CalculatedLoad TR 380 380 380 380 ‫ارى‬‫ر‬‫لح‬‫ا‬‫لحمل‬‫ا‬‫ات‬‫ب‬‫ا‬‫س‬‫ح‬
SelectedCapacityDifference TR 380 437 437 437 ‫األجهزة‬‫ار‬‫ي‬‫إخت‬‫فرق‬‫بعد‬‫ارى‬‫ر‬‫لح‬‫ا‬‫لحمل‬‫ا‬
‫الداخلية‬ ‫الوحدات‬ ‫إختيار‬ ‫بعد‬ ‫التبريد‬ ‫حمل‬ ‫اجمالى‬ ‫مقارنة‬
Total Heat Load Compression after selection of Indoor Units-
15%
Increase in TR
because of
Indoor
Selection
15%
‫أطنان‬ ‫فى‬ ‫زيادة‬
‫الوحدات‬
‫بعد‬ ‫الداخلية‬
‫اإلختيار‬
‫األجهزة‬ ‫بوحدة‬ ‫كما‬ ‫بالخارجية‬ ‫مرتبطة‬ ‫غير‬ ‫الداخلية‬ ‫الوحدات‬ ‫ألن‬ ‫يتغير‬ ‫لم‬ ‫الشلرات‬ ‫تبريد‬ ‫حمل‬ ‫إجمالى‬‫المنفصلة‬
Chillers Cap. Remain the same since Indoor units is not connected One-to-One like DX

54. W
N
E
S
N
E
S
‫إذن‬...‫ليس‬ ‫األعلى‬ ‫الحمل‬
‫القصوى‬ ‫األحمال‬ ‫المجموع‬,‫بل‬
‫الغربي‬ ‫الناحية‬ ‫عند‬ ‫المجموع‬‫ة‬
So .. The total Heat
Load is not the sum of
all peaks, but the total
Load the of highest
peak (West Side)

55. W
S
E
N
Room Side Design Selection West North South East
West Side 3.25 4 3.25 1.25 1.25 0.5
North Side 1.75 2 1.25 1.75 1.75 0.75
South Side 2.25 2.5 1.75 2.25 2.25 1
East Side 2.75 3 0.75 1.25 1.25 2.75
Total 10 11.5 7 6.5 6.5 5
15.0% 60.9% 56.5% 56.5% 43.5%
Heat Load Calculation
Selection Increase%
Peak Load/Time-Period
60%
Is Minimum
Thermal
Diversity from
Selected Load

56. ‫معدل‬ ‫سنطبق‬We’ll Apply Diversity of
Since Solar & Trans Heat
Gain of a Building
average: 60% of the Total
Heat Load.
The calculated Diversity
of 60% will be equivalent
to 36% of the total
Building Diversity.
‫كسب‬ ‫متوسط‬ ‫كان‬ ‫لما‬
‫وعبر‬ ‫الشمس‬ ‫من‬ ‫الحرارة‬
‫البناء‬:60٪‫إجمالي‬ ‫من‬
‫الحراري‬ ‫الحمل‬.
‫االخت‬ ‫تنوع‬ ‫سيكون‬ ‫وعليه‬‫الف‬
‫بنسبة‬ ‫المحسوب‬60٪‫ا‬ً‫ئ‬‫مكاف‬
‫لـ‬36٪‫تنوع‬ ‫إجمالي‬ ‫من‬
‫المباني‬

57. ‫التخفيض‬ ‫بعد‬ ‫التبريد‬ ‫حمل‬ ‫اجمالى‬ ‫مقارنة‬
Total Heat Load Compression after diversity
‫بنسبة‬ ‫المنفصل‬ ‫من‬ ‫أقل‬ ‫الشلر‬ ‫تبريد‬ ‫حمل‬ ‫اجمالى‬ ‫أن‬ ‫الحظ‬45%
Note that Chillers Cool Capacity is less by 45% than DX
EquipmentType Units VWV Sys. VRF Sys. DS Units Deco Units ‫األجهزة‬‫نوع‬
Calculated Load TR 380 380 380 380 ‫الحرارى‬‫الحمل‬ ‫حسابات‬
Selected CapacityDifference TR 380 437 437 437 ‫األجهزة‬‫إختيار‬‫فرق‬‫بعد‬‫الحرارى‬‫الحمل‬
AfterDiversified Load (30%) 0.7 266 437 437 437 %30 ‫االجمالى‬‫الحمل‬‫من‬‫التخفيض‬‫امكانية‬‫بعد‬
ThermalLosses Provision 3% 8 0 0 0 ‫األنابيب‬‫فى‬‫تبريد‬‫فقد‬‫احتياطى‬
SafetyProvisionorSelection 10% 27 0 0 0 ‫بنسبة‬‫أمان‬‫احتياطى‬
PlantSize TR 301 437 437 437 ‫التبريد‬‫لحمل‬‫اإلجمالى‬‫الحجم‬
TR Difference betweenCH.Vs.DX Dhs 1 136 136 136 ‫المنفصلة‬ ‫والوحدات‬‫الشيلر‬‫بين‬‫األطنان‬‫فرق‬
%Saving Standing % 100% -45% -45% -45% ‫اإلبتدائى‬‫التوفير‬‫نسبة‬

58. ‫التخفيض‬ ‫بعد‬ ‫التبريد‬ ‫تكلفة‬ ‫اجمالى‬ ‫مقارنة‬
Total Price Comparison: after diversity
‫ال‬ ‫من‬ ‫أقل‬ ‫الشلر‬ ‫تبريد‬ ‫تكلفة‬ ‫أن‬ ‫الحظ‬(‫فى‬.‫أر‬.‫أف‬)‫المنفصل‬ ‫من‬ ‫وأغلى‬
Note that Chillers Price is less than VRF but higher than DS
Equipment Type A/C Type VWVSys. VRF Sys. DSUnits Deco Units ‫األجهزة‬‫نوع‬
CalculatedLoad TR 380 380 380 380 ‫الحرارى‬ ‫الحمل‬‫حسابات‬
After Selection:15%increase inDXonly 15% 380 437 437 437
After DiversifiedLoad(30%):VWVonly 0.7 266 %30 ‫االجمالى‬ ‫الحمل‬ ‫من‬ ‫التخفيض‬ ‫امكانية‬ ‫بعد‬
ThermalLosses Provision:VWVonly 3% 8 0 0 0 ‫األنابيب‬ ‫فى‬ ‫تبريد‬ ‫فقد‬ ‫احتياطى‬
SafetyProvisionor Selection:VWVonly 10% 27 0 0 0 ‫بنسبة‬ ‫أمان‬ ‫احتياطى‬
CapacityDropdue to longpiping 10% 0 0 0
PlantSize TR 301 437 437 437 ‫التبريد‬ ‫لحمل‬ ‫اإلجمالى‬ ‫الحجم‬
Cost/TR Dhs 6000 5000 4000 1500 ‫الواحد‬ ‫للطن‬ ‫التكلفة‬
Installation Total Cost Dhs 1,803,480 2,185,000 1,748,000 655,500 ‫التركيب‬‫و‬ ‫للتوريد‬ ‫اإلجمالية‬ ‫التكلفة‬
Relative Standinginstallation Dhs 1 381,520 55,480 1,147,980 ‫التركيب‬ ‫عند‬ ‫اإلبتدائى‬‫الفرق‬ ‫قيمة‬
%Difference Standing % 100% 21% -3% -64% ‫اإلبتدائى‬‫الفرق‬ ‫نسبة‬

59. ‫اإلفتراض‬ ‫العمر‬‫ى‬
6
Life
Investment
‫اإلفتراض‬ ‫العمر‬‫ى‬
12
Life
Investment
‫اإلفتراض‬ ‫العمر‬‫ى‬
24
Life
Investment

60. ‫اإلستثمار‬ ‫اجمالى‬ ‫على‬ ‫اإلفتراضى‬ ‫العمر‬ ‫تأثير‬ ‫مقارنة‬
Effect of Equipments Life on Investment
‫في‬ ‫منظومة‬.‫أر‬.‫أف‬.‫من‬ ‫بأكثر‬ ‫أرخص‬ ‫الشيلرات‬ ‫بينما‬ ‫ثمنا‬ ‫األغلى‬50%‫عند‬
‫لألجهزة‬ ‫اإلفتراضى‬ ‫العمر‬ ‫مع‬ ‫السنوية‬ ‫التكلفة‬ ‫مقارنة‬
VRF Sys. Is most expensive, while CH. W. Sys. is cheaper
by more than 50%, when comparing Eq. life.

61. ‫اإلستثمار‬ ‫اجمالى‬ ‫على‬ ‫اإلفتراضى‬ ‫العمر‬ ‫تأثير‬ ‫مقارنة‬
Effect of Equipments Life on Investment
‫في‬ ‫منظومة‬.‫أر‬.‫أف‬.‫من‬ ‫بأكثر‬ ‫أرخص‬ ‫الشيلرات‬ ‫بينما‬ ‫ثمنا‬ ‫األغلى‬50%‫عند‬
‫لألجهزة‬ ‫اإلفتراضى‬ ‫العمر‬ ‫مع‬ ‫السنوية‬ ‫التكلفة‬ ‫مقارنة‬
VRF Sys. Is most expensive, while CH. W. Sys. is cheaper
by more than 50%, when comparing Eq. life.
Replacement Cost A/C Type VWVSys. VRFSys. DSUnits DecoUnits ‫األجهزة‬‫إستبدال‬
EquipmentLife (Yrs) Year 24 12 12 6 ‫بالسنوات‬‫لألجهزة‬‫اإلفتراضى‬‫العمر‬
Installation Total Cost Dhs 1,803,480 1,900,000 1,520,000 570,000 ‫التركيب‬‫و‬‫للتوريد‬‫اإلجمالية‬‫التكلفة‬
Relative Standinginstallation Dhs 1 96,520 283,480 1,233,480 ‫التركيب‬‫عند‬‫اإلبتدائى‬‫الفرق‬‫قيمة‬
%SavingStanding % 100% 5% -16% -68% ‫اإلبتدائى‬‫الفرق‬‫نسبة‬
AnnualInstalltionCost Dhs 75,145 158,333 126,667 95,000 ‫االفتراضى‬‫بالعمر‬‫مقارنة‬ ‫السنوى‬‫التركيب‬‫تكلفة‬
Relative StandingInstallation/Yr(12) Dhs 1 83,188 51,522 19,855 ‫السنوى‬‫الفرق‬‫قيمة‬
%Difference Standing % 100% 111% 69% 26% ‫السنوى‬‫الفرق‬‫نسبة‬

62. 6
12
18
24
Years
1.8 M 1.9 M 1.52M 0.57M‫مقارنة‬
‫الع‬ ‫تأثير‬‫مر‬
‫اإلفتراض‬‫ى‬
‫على‬
‫إجمالي‬
‫االستثمار‬
‫االبتدائي‬
Effect of
Equipments
Life on
Initial
Investment
75,145
Dhs
158,333
Dhs
126,666
Dhs
95,000
Dhs

63. 6
12
18
24
Years
1.8 M
1.9 M
3.8 M
1.52M
3.04M
0.57M
1.14M
1.71M
2.28M
‫مقارنة‬
‫الع‬ ‫تأثير‬‫مر‬
‫اإلفتراض‬‫ى‬
‫على‬
‫إجمالي‬
‫االستثمار‬
Effect of
Equipments
Life on
Investment
2.3 M

64. ‫اإلستثمار‬ ‫اجمالى‬ ‫على‬ ‫اإلفتراضى‬ ‫العمر‬ ‫تأثير‬ ‫مقارنة‬(24)‫سنة‬
Effect of Equipments Life on Investment (24)Yrs
‫في‬ ‫منظومة‬.‫أر‬.‫أف‬.‫عن‬ ‫بالنصف‬ ‫أرخص‬ ‫الشيلرات‬ ‫بينما‬ ‫ثمنا‬ ‫األغلى‬‫مقارنة‬ ‫د‬
‫للشيلر‬ ‫اإلفتراضى‬ ‫العمر‬ ‫مع‬ ‫السنوية‬ ‫التكلفة‬.
VRF Sys. Is most expensive, while CH. W. Sys. is cheaper
by half the cost, when comparing CH. W. System life.
ReplacementCost A/CType VWVSys. VRFSys. DSUnits DecoUnits ‫األجهزة‬‫إستبدال‬
AnnualInstalltionCostvs.Life/Initial Dhs/Mon 75,145 158,333 126,667 95,000 ‫اضى‬‫ر‬‫االفت‬‫لعمر‬‫ا‬‫ب‬‫مقارنة‬‫لسنوى‬‫ا‬‫لتركيب‬‫ا‬‫تكلفة‬
Addionalinvestementevery6/12Years Dhs 500,000 1,900,000 1,520,000 570,000 ‫سنة‬6/12‫كل‬‫لمطلوبة‬‫ا‬‫االستثمار‬‫قيمة‬
TotalInstallation&Renovation/Yr(24) Dhs 2,303,480 3,800,000 3,040,000 2,280,000 ‫سنة‬24‫لـ‬‫ا‬‫خالل‬‫لتجديد‬‫ا‬‫و‬‫لتركيب‬‫ا‬‫تكلفة‬
AnnualInstalltionCostvs.Life/Yr(24) Dhs 95,978 158,333 126,667 95,000 ‫سنة‬24/‫مقارنة‬‫لسنوى‬‫ا‬‫لتركيب‬‫ا‬‫تكلفة‬
RelativeStandingInstallation/Yr(24) Dhs 1 62,355 30,688 978 ‫لية‬‫ا‬‫اإلجم‬‫لتركيب‬‫ا‬‫قيمة‬‫من‬‫لسنوى‬‫ا‬‫لفرق‬‫ا‬‫قيمة‬
%DifferenceStanding % 100% 65% 32% -1% ‫لسنوى‬‫ا‬‫لفرق‬‫ا‬‫نسبة‬

65. 200K
Y.Value 1.8 M 2.2 M3.8 M 1.75M3.04M .875M1.75M2.62M2.28M‫القيمة‬
‫السنوية‬
‫لالستثمار‬
‫طول‬ ‫على‬
24‫سنة‬
Yearly
Value
for total
cost of
24 Years
2.3 M
95,978
Dhs
158,333
Dhs
126,667
Dhs
95,000
Dhs
150K
100K
50K

66. It’s True that VRF/VRV is most
Efficient System: 1.1 KW/TR .. But
‫في‬ ‫ال‬ ‫منظومة‬ ‫أن‬ ‫صحيح‬.‫أر‬.‫أف‬.
‫كفاءة‬ ‫األكثر‬....‫لكن‬ ‫و‬
2 CH: 190
TR/each
44 VRV: 10
TR/each
88 DS: 5
TR/each
176 Deco:
2.5 TR/each
454
269
538++
20
11.9
523
11
6.5
572
5.4
3.2
563
2 CH: 190 44 VRV: 10 88 DS: 5 176 Deco:
PI-Power Input Amps
KW @ 380 Volt/each
Total KW per A/C Sys.

67. ‫الحكومية‬ ‫الرسوم‬ ‫و‬ ‫المتصلة‬ ‫الكهرباء‬ ‫فى‬ ‫الفرق‬ ‫مقارنة‬
Comparison: Different in Connected Power & Fees
‫منظومة‬‫في‬.‫أر‬.‫أف‬‫األقل‬‫بنسبة‬ ‫المتصلة‬ ‫بالكهرباء‬3.%‫الشيلرات‬‫تليها‬,‫بينما‬
‫أكثر‬ ‫المنفصلة‬ ‫الوحدات‬‫بحوالى‬5%‫و‬6%
VRF is most least of connected power by 3% more in CHW Sys. , then
Splits more by 5% & 61%, while VRF is highest
AuthorityFEES A/C Type VWV Sys. VRF Sys. DS Units Deco Units ‫الحكومية‬ ‫الرسوم‬
PI: Power Input for each Unit Amps 454.0 20.0 11.0 5.4 ‫الكهرباء-أمبير‬ ‫إستهالك‬ ‫كفاءة‬ ‫معدل‬
PI: Power Input for each Unit @ 380 Volt KW 269.0 11.9 6.5 3.2 ‫الكهرباء-كيلووات‬ ‫إستهالك‬ ‫كفاءة‬ ‫معدل‬
Total Number of Units Per Type of Sys Nos. 2.0 44.0 88.0 176.0 ‫المنظومة‬ ‫نوع‬ ‫على‬ ‫بناءا‬ ‫التكييف‬ ‫أجهزة‬ ‫عدد‬
Total KW Required for A/C System KW 538 524 572 563 ‫التكييف‬ ‫لنظام‬ ‫الالزمة‬ ‫الكهرباء‬ ‫إجمالى‬
Govermental Fees, Electrical Connection 2,200 1,183,600 1,151,920 1,258,400 1,239,040 ‫الكهرباء‬ ‫لتوصيل‬ ‫الحكومية‬ ‫الرسوم‬
Cost of Transformer ? 2 1 1 1 ‫محول‬ ‫وجود‬ ‫تكلفة‬
Lost of Rent due to Transformer ? ‫للمحول‬ ‫المخصصة‬ ‫للمساحة‬ ‫اإليجارية‬ ‫القيمة‬
Electrical: Cabling, Wiring, DB, MCCB ? ‫كهربائية‬ ‫وقواطع‬ ‫أسالك‬ :‫الكهربائية‬ ‫األعمال‬
Total Cost of Electrical FEES Dhs 1,183,600 1,151,920 1,258,400 1,239,040 ‫الحكومية‬ ‫للرسوم‬ ‫اإلجمالية‬ ‫التكلفة‬
Difference in Authority Cost Dhs 1 31,680 74,800 55,440 ‫الحكومية‬ ‫الرسوم‬ ‫من‬ ‫الفرق‬ ‫قيمة‬
Difference % % 100% -3% 6% 5% ‫الفرق‬ ‫نسبة‬

68. It’s True that VRF/VRV is most
Efficient System: 1.1 KW/TR .. But
‫في‬ ‫ال‬ ‫منظومة‬ ‫أن‬ ‫صحيح‬.‫أر‬.‫أف‬.
‫كفاءة‬ ‫األكثر‬....‫لكن‬ ‫و‬
2 CH: 190
TR/each
44 VRV: 10
TR/each
88 DS: 5
TR/each
176 Deco:
2.5 TR/each
454
630
495
990++
31
40
27
1188
11
40
27
2376
5.4
40
27
4752
2 CH: 190 44 VRV: 10 88 DS: 5 176 Deco:
PI-Power Input Amps
Fuse Size in Amps/each
KW @ 380 Volt/each.Fuse
Total KW per A/C Sys.

69. We’ll not apply this calculation
before we are sure of FEES
‫من‬ ‫المزيد‬ ‫بعد‬ ‫إال‬ ‫الحساب‬ ‫بهذا‬ ‫نقوم‬ ‫لن‬
‫الرسوم‬ ‫واقع‬ ‫من‬ ‫التأكد‬
More
Breakers
More
Losses
for
Safety
‫القاطع‬ ‫قياس‬ ‫مقابل‬ ‫الرسوم‬ ‫كانت‬ ‫حال‬ ‫في‬‫المختار‬
In case FEES were against selected Fuse

70. ‫مقارنة‬‫الكهرباء‬ ‫بأعمال‬ ‫الفرق‬‫المتصلة‬‫للتكييف‬ ‫المصاحبة‬
Comparison: Different Electrical Contracting Works (Per Type)
‫الكبيرة‬ ‫الشركات‬ ‫أن‬ ‫أعتقد‬(MEP)‫بسهولة‬ ‫المقارنة‬ ‫عمل‬ ‫يمكنهم‬
I think big MEP Companies can make this comparison easier
CostofElectricalContracting A/CType VWVSys. VRFSys. DSUnits DecoUnits ‫التكييف‬‫كهرباء‬‫مقاولة‬‫سعر‬
TotalKWRequiredforA/CSystem KW 990 1,188 2,376 4,752 ‫التكييف‬‫لنظام‬‫الالزمة‬‫الكهرباء‬‫إجمالى‬
TotalCostofElectricalWorks ‫الكهربائية‬‫التمديدات‬‫مقاولة‬‫تكلفة‬‫إجمالى‬
CostofTransformer ? 2 1 1 1 ‫محول‬‫وجود‬‫تكلفة‬
LostofRentduetoTransformer ? ‫للمحول‬‫المخصصة‬‫للمساحة‬‫اإليجارية‬‫القيمة‬
TotalCostofElect.InstallationWorks ‫الكهربائية‬‫التمديدات‬‫مقاولة‬‫كامل‬‫تكلفة‬‫إجمالى‬
DifferenceofInstallationWorksCost ‫التمديدات‬‫كامل‬‫مقاولة‬‫تكلفة‬‫فرق‬
RelativeStandinginstallation Dhs 0 ‫التركيب‬‫عند‬‫اإلبتدائى‬‫الفرق‬‫قيمة‬
%DifferenceStanding % ‫اإلبتدائى‬‫الفرق‬‫نسبة‬

71. A/C System ‫التكييف‬ ‫نظام‬ ‫نوعية‬: :
‫شباك‬ ‫مكيف‬2.5-2.7Kw/TrWindow
‫منفصلة‬ ‫وحادات‬2Kw/TrMini Split
‫مندمجة‬ ‫وحدات‬1.7Package Unit
‫بالهواء‬ ‫تبريد‬ ‫شيلرات‬1.3-1.5Air Cooled Chiller
‫في‬ ‫منظومة‬.‫أر‬.‫أف‬1.1-1.2VRF System
‫المركزي‬ ‫الطرد‬ ‫شيلرات‬0.57-0.7Centrifugal Chiller

72. ‫الكهرباء‬ ‫استهالك‬ ‫من‬ ‫السنوى‬ ‫الوفر‬ ‫مقارنة‬
Comparison: Possible Saving from Power Consumption
‫اآل‬ ‫بالمنظومات‬ ‫قياس‬ ‫األقل‬ ‫تعتبر‬ ‫الشيلرات‬ ‫لمنظومة‬ ‫الكهرباء‬ ‫إستهالك‬‫خرى‬
(‫الوحدات‬ ‫إستهالك‬ ‫الحظ‬‫الديكورية‬‫تقترب‬3‫الشيلرات‬ ‫إستهالك‬ ‫أضعاف‬.)
Electrical Consumption for Chillers is the lowest than all other systems
(Note that Decorative Units Consume almost 3 Times CH. W. System).
PowerConsumption A/C Type VWVSys. VRFSys. DSUnits DecoUnits ‫الكهرباء‬‫إستهالك‬
FullLoadOperatingHours FLOH 2,500 4,000 4,000 4,000 ‫لألجهزة‬‫المتوقعة‬‫التشغيل‬‫ساعات‬ ‫عدد‬
ElectricalConsumptionEff. KW/TR 1.6 1.2 1.8 2.1 )‫الواحد‬‫(كيلوات/للطن‬‫الكهرباء‬‫استهالك‬‫كفاءة‬
TotalPower Consumption KWH 1,202,320 2,097,600 3,146,400 3,670,800 ‫المتوقع‬‫الكهرباء‬‫استهالك‬‫اجمالى‬
AnnualElectricityCost(Dhs/KW) 0.45 541,044 943,920 1,415,880 1,651,860 ‫بالسنة‬‫المتوقعة‬‫الكهالباء‬‫استهالك‬‫قيمة‬
RelativeStandingInstallation/Yr(12) Dhs 1 402,876 874,836 1,110,816 ‫السنوى‬‫الفرق‬‫قيمة‬
Relative Difference from A/C
Power Consumption
% 100% 74% 162% 205%
‫كهرباء‬‫استهالك‬‫من‬‫السنوى‬‫الفرق‬‫قيمة‬
‫التكييف‬

73. LEED BD+C: New Construction | v4 - LEED v4
Demand response: Possible 2 points
• Intent
• To increase
participation in
demand response
technologies and
programs that make
energy generation
and distribution
systems more
efficient, increase
grid reliability, and
reduce greenhouse
gas emissions.
•‫النية‬
‫في‬ ‫المشاركة‬ ‫لزيادة‬
‫وبرامج‬ ‫تقنيات‬
‫الت‬ ‫الطلب‬ ‫استجابة‬‫ي‬
‫توليد‬ ‫أنظمة‬ ‫تجعل‬
‫أكث‬ ‫وتوزيعها‬ ‫الطاقة‬‫ر‬
‫وزيادة‬ ، ‫كفاءة‬
، ‫الشبكة‬ ‫موثوقية‬
‫انبعاثات‬ ‫وتقليل‬
‫الدفيئة‬ ‫غازات‬.
https://www.usgbc.org/node/2613001?return=/credits

74. LEED BD+C: New Construction | v4 - LEED v4
Minimum energy performance: Required• Intent
• To reduce the environmental and
economic harms of excessive energy use
by achieving a minimum level of energy
efficiency for the building and its systems.
•‫النية‬
‫الناج‬ ‫واالقتصادية‬ ‫البيئية‬ ‫األضرار‬ ‫لتقليل‬‫عن‬ ‫مة‬
‫مس‬ ‫تحقيق‬ ‫طريق‬ ‫عن‬ ‫للطاقة‬ ‫المفرط‬ ‫االستخدام‬‫توى‬
‫وأنظمته‬ ‫للمبنى‬ ‫الطاقة‬ ‫كفاءة‬ ‫من‬ ‫أدنى‬.
Requirements
Option 1. Whole-building energy simulation, OR
Option 2. Prescriptive compliance: ASHRAE 50%
Advanced Energy Design Guide, OR
Option 3. Prescriptive compliance: Advanced
Buildings Core Performance Guide
‫منظومة‬‫في‬.‫أر‬.‫أف‬.‫توفر‬
‫توقعات‬ ‫محاكاة‬ ‫في‬ ‫سهولة‬
‫الكهرباء‬ ‫استهالك‬
VRF System equipped to
simulate the building
energy

75. LEED BD+C: New Construction | v4 - LEED v4
Optimize energy performance: Possible 18 points
Intent
To achieve increasing levels of energy performance beyond
the prerequisite standard to reduce environmental and
economic harms associated with excessive energy use.
•‫النية‬
‫ي‬ ‫بما‬ ‫الطاقة‬ ‫أداء‬ ‫من‬ ‫متزايدة‬ ‫مستويات‬ ‫لتحقيق‬‫تجاوز‬
‫ا‬ ‫األضرار‬ ‫لتقليل‬ ‫األساسية‬ ‫المتطلبات‬ ‫معيار‬‫لبيئية‬
‫لل‬ ‫المفرط‬ ‫باالستخدام‬ ‫المرتبطة‬ ‫واالقتصادية‬‫طاقة‬.
Requirements
Establish an energy performance target no later than the schematic design phase. The target must be established as kBtu per square foot-year (kW per square
meter-year) of source energy use.
Choose one of the options below.
Option 1. Whole-building energy simulation (1–18 points except Schools and Healthcare, 1–16 points Schools, 1–20 points Healthcare)
Analyze efficiency measures during the design process and account for the results in design decision making. Use energy simulation of efficiency opportunities,
past energy simulation analyses for similar buildings, or published data (e.g., Advanced Energy Design Guides) from analyses for similar buildings.
Analyze efficiency measures, focusing on load reduction and HVAC-related strategies (passive measures are acceptable) appropriate for the facility. Project
potential energy savings and holistic project cost implications related to all affected systems.
Project teams pursuing the Integrative Process credit must complete the basic energy analysis for that credit before conducting the energy simulation.
Follow the criteria in EA Prerequisite Minimum Energy Performance to demonstrate a percentage improvement in the proposed building performance rating
compared with the baseline. Points are awarded according to Table 1.
https://www.usgbc.org/node/2614273?return=/credits
You can Measure it, so you can Manage it – ‫به‬ ‫التحكم‬ ‫تستطيع‬ ‫إذن‬ ‫قياسه‬ ‫تستطيع‬

76. ExpansionCycleLP2 psi
HP1 psi
Condensing
Evaporating
Refrigerant in
liquid and gaseous states
Sub-cooled
refrigerant
Super-heated
refrigerant
Superheat
Differential
Pressure
Enthalpy
Basic Refrigeration Cycle ‫التبريد‬ ‫دائرة‬ ‫أساسيات‬

77. LP1 psi
HP1 psi
Superheat
Differential
Pressure
Enthalpy
Refrigeration Cycle at HP ‫الضغط‬ ‫يرتفع‬ ‫عندما‬ ‫التبريد‬ ‫دائرة‬-
Cooling
Effect@LP
Effect @ HP
HP1 psi
LP1 psi
‫ضعف‬ ‫تأثير‬
‫الصيانة‬of
Lack of
Maintenance
Effect
SH
Remember the Condenser Self Cleaning Feature– ‫التنظيف‬ ‫ميزة‬ ‫تذكر‬‫الذاتى‬

78. ‫الصيانة‬ ‫من‬ ‫السنوى‬ ‫التوفير‬ ‫مقارنة‬
Compression: Possible Saving from Maintenance
‫بنسبة‬ ‫أوفر‬ ‫الشيلرات‬ ‫صيانة‬ ‫أن‬ ‫الحظ‬94%‫في‬ ‫من‬ ‫أقل‬ ‫الطوارئ‬ ‫اصالحات‬ ‫أن‬ ‫كما‬.‫أر‬.‫أف‬
Note that Chillers Maint. Is less by 94% than VRF, while Split is Cheaper
MaintenanceCost A/CType VWVSys. VRFSys. DSUnits DecoUnits ‫الصيانة‬‫مخصصات‬
MaintCostPerTRwithspareparts Dhs/TR 250 300 150 150 ‫احد‬‫و‬‫ل‬‫ا‬‫للطن‬‫لمتوقع‬‫ا‬‫لصيانة‬‫ا‬‫تكلفة‬
TotalMaint.AgreementCost Dhs 75,145 131,100 65,550 65,550 ‫لمتوقع‬‫ا‬‫لصيانة‬‫ا‬‫عقد‬‫قيمة‬‫لى‬‫ا‬‫اجم‬
RelativeStandingMaintenance % 5% 10% 5% 3% ‫لصيانة‬‫ا‬‫عقد‬‫قيمة‬‫فرق‬‫قيمة‬
YearlyRepairs&Sparesover/Yr Dhs 90,174 190,000 76,000 17,100 ‫سنة‬/‫لغيار‬‫ا‬‫وقطع‬‫لسنوية‬‫ا‬‫اإلصالحات‬‫معدل‬
RepairsDifference/Yr Dhs ‫سنوى‬/‫اإلصالحات‬‫فرق‬
TotalMaint.Agreement&PartsCost Dhs 165,319 321,100 141,550 82,650 ‫اإلصالحات‬‫و‬‫لصيانة‬‫ا‬‫ليف‬‫ا‬‫تك‬‫مجموع‬
YearlyMaitenanceDifferencePerYr Dhs 1 155,781 23,769 82,669 ‫لصيانة‬‫ا‬‫من‬‫لسنوية‬‫ا‬‫لفرق‬‫ا‬‫قيمة‬
%YearlyDifferencefromMaintenance % 100% 94% -14% -50% ‫لصيانة‬‫ا‬‫من‬‫لسنوى‬‫ا‬‫لفرق‬‫ا‬‫نسبة‬

79. ‫فرق‬‫التشغيل‬ ‫تكاليف‬/‫التركيب‬
Difference. from Operations & Installation
‫التوفير‬ ‫أن‬ ‫الحظ‬‫السنوي‬‫ال‬ ‫كل‬ ‫من‬ ‫واضح‬ ‫الشيلرات‬ ‫لمنظومة‬‫نواحى‬
Note that Yearly Saving is noticeable from all sides
Diff.fromOperations&Installation A/CType VWVSys. VRFSys. DSUnits DecoUnits ‫التركيب‬/‫التشغيل‬‫تكاليف‬‫فرق‬
AnnualInstalltionCostvs.Life/Yr(24) Dhs 95,978 158,333 126,667 95,000 ‫سنة‬24/‫مقارنة‬‫السنوى‬‫التركيب‬‫تكلفة‬
TotalCostofElectricalFEES/24 Dhs 49,317 47,997 52,433 51,627 24/‫الحكومية‬‫للرسوم‬‫اإلجمالية‬‫التكلفة‬
RelatedElectricalWork Dhs ‫بالتكييف‬‫المرتبطة‬‫الكهربائية‬‫التمديدات‬‫مقاولة‬‫أعمال‬
TotalMaint.Cost Dhs 165,319 321,100 141,550 82,650 ‫لمتوقع‬‫ا‬‫لصيانة‬‫ا‬ ‫قيمة‬‫لى‬‫ا‬‫اجم‬
TotalPowerConsumption Dhs 541,044 943,920 1,415,880 1,651,860 ‫لسنة‬‫ا‬‫ب‬‫لمتوقعة‬‫ا‬‫لكهالباء‬‫ا‬‫استهالك‬‫قيمة‬
TotalOperation/Yr Dhs 851,658 1,471,350 1,736,530 1,881,137 ‫لتشغيل‬‫ا‬‫تكلفة‬‫لى‬‫ا‬‫اجم‬
RelativeDifferencefromOperation Dhs 1 534,875 694,209 819,325 ‫لتشغيل‬‫ا‬‫من‬‫لسنوى‬‫ا‬‫لفرق‬‫ا‬‫قيمة‬
%DifferenceStanding % 100% -63% -81% -96% ‫لسنوى‬‫ا‬‫لفرق‬‫ا‬‫نسبة‬

80. ‫السنوية‬ ‫التكاليف‬ ‫ملخص‬ ‫مقارنة‬Comparison: Summaries of All Costs-
‫محدودة‬ ‫التكلفة‬ ‫فرق‬ ‫إسترداد‬ ‫فإن‬ ‫المال‬ ‫رأس‬ ‫لتكلفة‬ ‫إعتبار‬ ‫بدون‬ ‫حتى‬
ROI is limited time even without considering the initial capital
SummariesofAllCosts A/CType VWVSys. VRFSys. DSUnits DecoUnits ‫ية‬‫و‬‫ن‬‫س‬‫ل‬‫ا‬‫يف‬‫ل‬‫ا‬‫ك‬‫ت‬‫ل‬‫ا‬‫لخص‬‫م‬‫نة‬‫ر‬‫ا‬‫ق‬‫م‬
AnnualInstalltionCostvs.Life/Yr(24) Dhs 95,978 158,333 126,667 95,000 ‫نة‬‫س‬24/‫ة‬‫ن‬‫ر‬‫ا‬‫ق‬‫م‬‫نوى‬‫س‬‫ل‬‫ا‬‫يب‬‫ك‬‫لتر‬‫ا‬‫فة‬‫ل‬‫ك‬‫ت‬
TotalCostofElect.InstallationWorks Dhs 0 0 0 0 ‫ئية‬‫ا‬‫ب‬‫ر‬‫لكه‬‫ا‬‫ات‬‫د‬‫ي‬‫د‬‫لتم‬‫ا‬‫لة‬‫و‬‫ا‬‫ق‬‫م‬‫امل‬‫ك‬‫فة‬‫ل‬‫ك‬‫ت‬‫لى‬‫ا‬‫م‬‫إج‬
TotalOperationCost/Yr 851,658 1,471,350 1,736,530 1,881,137 ‫نة‬‫س‬/‫ل‬‫ي‬‫غ‬‫لتش‬‫ا‬ ‫فة‬‫ل‬‫ك‬‫ت‬‫لى‬‫ا‬‫م‬‫اج‬
GrandTotalCost/Yr 947,636 1,629,683 1,863,197 1,976,137 ‫نة‬‫س‬/‫ل‬‫ي‬‫غ‬‫لتش‬‫ا‬‫و‬‫يب‬‫ك‬‫لتر‬‫ا‬‫فة‬‫ل‬‫ك‬‫ت‬‫لى‬‫ا‬‫م‬‫اج‬
TotalOperationCostover24Yr Dhs 22,743,272 39,112,400 44,716,720 47,427,280 ‫نة‬‫س‬24‫خالل‬‫يل‬‫غ‬‫لتش‬‫ا‬‫و‬‫يب‬‫ك‬‫لتر‬‫ا‬‫فة‬‫ل‬‫ك‬‫ت‬‫لى‬‫ا‬‫م‬‫اج‬
RelativeDifferencefor24Yr Dhs 1 16,369,128 21,973,448 24,684,008 ‫نة‬‫س‬24‫خالل‬‫قع‬‫و‬‫ت‬‫م‬‫ل‬‫ا‬‫لفرق‬‫ا‬‫لى‬‫ا‬‫م‬‫اج‬
%DifferenceOver24Yr % 100% 72% 97% 109% ‫نة‬‫س‬24‫خالل‬‫لفرق‬‫ا‬‫بة‬‫س‬‫ن‬

81. ‫محدودة‬ ‫التكلفة‬ ‫فرق‬ ‫إسترداد‬ ‫فإن‬ ‫المال‬ ‫رأس‬ ‫لتكلفة‬ ‫إعتبار‬ ‫بدون‬ ‫حتى‬
ROI is limited time even without considering the initial capital
Payback Period for Initial Investment
Diff from Operations only
‫االستثم‬ ‫لتعويض‬ ‫الالزمة‬ ‫الفترة‬‫ار‬
‫االبتدائي‬‫التشغ‬ ‫تكاليف‬ ‫فرق‬ ‫من‬‫فقط‬ ‫يل‬
PaybackPeriod.. A/CType VWVSys. VRFSys. DSUnits DecoUnits ...‫اإلبتدائى‬‫االستثمار‬‫لتعويض‬‫الالزمة‬‫الفترة‬
InitialInstalltionCost Dhs 1,803,480 2,185,000 1,748,000 655,500 ‫سنة‬24/‫مقارنة‬‫لسنوى‬‫ا‬‫لتركيب‬‫ا‬‫تكلفة‬
RelativeStandinginstallation Dhs 1 381,520 55,480 1,147,980 ‫لتركيب‬‫ا‬‫عند‬‫ائى‬‫د‬‫اإلبت‬‫لفرق‬‫ا‬‫قيمة‬
%DifferenceStanding % 100% 21% -3% -64% ‫ائى‬‫د‬‫اإلبت‬‫لفرق‬‫ا‬‫نسبة‬
Year 851,658 1,471,350 1,736,530 1,881,137
Month 70,972 122,613 144,711 156,761
RelativeStandinginstallation Dhs 1 51,641 73,739 85,790 ‫لتركيب‬‫ا‬‫عند‬‫ائى‬‫د‬‫اإلبت‬‫لفرق‬‫ا‬‫قيمة‬
%DifferenceStanding % 100% 73% 104% 121% ‫ائى‬‫د‬‫اإلبت‬‫لفرق‬‫ا‬‫نسبة‬
PaybackPeriodfor InitialInvestment Diff
fromOperationsonly
Month 1.00 0.75 13.38
‫فرق‬‫من‬‫اإلبتدائى‬‫االستثمار‬‫لتعويض‬‫الالزمة‬‫الفترة‬
‫فقط‬‫التشغيل‬‫تكاليف‬
TotalOperationCost ‫لتشغيل‬‫ا‬ ‫تكلفة‬‫لى‬‫ا‬‫اجم‬

82. ‫السنوية‬ ‫التكاليف‬ ‫ملخص‬ ‫مقارنة‬Comparison: Summaries of All Costs-
‫محدودة‬ ‫التكلفة‬ ‫فرق‬ ‫إسترداد‬ ‫فإن‬ ‫المال‬ ‫رأس‬ ‫لتكلفة‬ ‫إعتبار‬ ‫بدون‬ ‫حتى‬
ROI is limited time even without considering the initial capital
Payback Period for Initial
Investment Diff from
Operations only
‫االستثمار‬ ‫لتعويض‬ ‫الالزمة‬ ‫الفترة‬
‫االبتدائي‬‫التشغ‬ ‫تكاليف‬ ‫فرق‬ ‫من‬‫فقط‬ ‫يل‬
A/C Type VWVSys. VRFSys. DSUnits DecoUnits
Month 1.00 0.75 13.38

83. ‫محتملة‬ ‫إضافية‬ ‫توفير‬ ‫مجاالت‬
Other Possible Saving Areas
‫االتجاهات‬ ‫كل‬ ‫فى‬ ‫مؤكد‬ ‫توفير‬
Saving from all aspects expect higher initial investment
•‫الكهرباء‬ ‫أعمال‬ ‫تقليل‬.
•‫الكهربائ‬ ‫المحول‬ ‫حجم‬ ‫تصغير‬‫ي‬
•‫للكهرب‬ ‫اإلجمالى‬ ‫الحمل‬ ‫تقليل‬‫اء‬
‫الحكومية‬ ‫والرسوم‬.
•‫إيجارية‬ ‫مساحات‬ ‫توفير‬
•‫والتث‬ ‫الصيانة‬ ‫مشاكل‬ ‫تقليل‬‫ليج‬
‫التكثف‬ ‫مياه‬ ‫وتنقيط‬.
•‫مركزي‬ ‫بمنظومة‬ ‫التحكم‬ ‫يسهل‬‫ة‬
•Reduce Electrical Works.
•Decrease Transformer Size
•Reduce total electrical load
and governmental fees.
•Providing more Rental Space.
•Reduce maintenance
problems, including ice
formation & water leaking.
•Easy to control by BMS.

84. Anther Benefits – ‫إضافية‬ ‫فوائد‬
Roof @ Split Roof @ ChillersRoof @ VRF
Chiller-1Chiller-2
Extra Free
Space
60% 30% 10%

85. LEED BD+C: New Construction | v4 - LEED v4 Green
power and carbon offsets: Possible 2 points• Intent
• To encourage the reduction of greenhouse
gas emissions through the use of grid-
source, renewable energy technologies
and carbon mitigation projects.
•‫النية‬
‫انبعاثات‬ ‫من‬ ‫الحد‬ ‫على‬ ‫للتشجيع‬
‫استخدام‬ ‫خالل‬ ‫من‬ ‫الدفيئة‬ ‫غازات‬
‫المتجد‬ ‫الطاقة‬ ‫مصادر‬ ‫تكنولوجيات‬‫دة‬
‫الكربون‬ ‫تخفيف‬ ‫ومشروعات‬.
https://www.usgbc.org/node/2612837?return=/credits
Requirements
Engage in a contract for qualified resources that
have come online since January 1, 2005, for a
minimum of five years, to be delivered at least
annually. The contract must specify the provision
of at least 50% or 100% of the project’s energy
from green power, carbon offsets, or renewable
energy certificates (RECs).

86. ‫الحرارى‬ ‫الحمل‬ ‫لتغير‬ ‫لإلستجابة‬ ‫مرونة‬ ‫و‬ ‫حساسية‬ ‫أكثر‬ ‫الشيلرات‬ ‫نظام‬ ‫أن‬ ‫اعلم‬,‫فإن‬ ‫وعليه‬
‫للطاقة‬ ‫هدر‬ ‫بدون‬ ‫الراحة‬ ‫مستوى‬ ‫زيادة‬ ‫يمكنها‬ ‫فعالة‬ ‫وتحكم‬ ‫مراقبة‬ ‫منظومة‬
Note that Chillers are more sensitive & flexible toward changes in heat
load, for that e.BMS will enhance effective cooling & reduce wastage.
•‫كاملة‬ ‫المباني‬ ‫وهل‬
‫هذه‬ ‫في‬ ‫اإلشغال‬
‫السنة؟‬ ‫من‬ ‫األوقات‬
• Is the building is
fully occupied
those months?

87. ‫عرف‬‫الشافعي‬(‫العلم‬)‫فقال‬:‫شيء‬ ‫كل‬ ‫من‬ ‫شيء‬ ‫تعلم‬ ‫أن‬,‫ش‬ ‫في‬ ‫شيء‬ ‫كل‬ ‫و‬‫يء‬.
Al-Shaafa'i defined (knowledge) and said: To learn something
from everything, and everything in something
Muslim
Scholar
767-820

88. ‫ل‬ ‫اإلبداع‬ ‫هذا‬ ‫من‬ ‫نستفيد‬ ‫أن‬ ‫يمكن‬ ‫هل‬‫و‬
‫عاديا؟‬ ‫المحرك‬ ‫كان‬
Is this Piece of Art useful if
using Normal Engine?

89. ‫مهندسونا‬ ‫سيصمم‬ ‫متى‬‫بناءا‬‫الحواس؟‬ ‫كافة‬ ‫راحة‬ ‫على‬
When our Engineers will satisfy all sensors?

90. For Support Kindly contact: Eng. Juma Yousef
+971-50-4948385 (jumayjuma@gmail.com)
Green Earth Technology Co. UAE -Getco– ‫الخضراء‬ ‫األرض‬ ‫تكنولوجيا‬ ‫شركة‬-‫اإلمارات‬-‫جيتكو‬-
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/
https://www.facebook.com/greenearthtech
nologycompany/
https://www.facebook.com/groups/7809
70768708352/
jumayjuma@gmail.com
‫إال‬ ‫أريد‬ ‫إن‬
‫ما‬ ‫اإلصالح‬
‫استطعت‬