مجموعة تكنولاب البهاء جروب

تحاليل وتنقية ومعالجة المياه
 
الرئيسيةالبوابةمكتبة الصورس .و .جبحـثالأعضاءالمجموعاتالتسجيلدخول
تنظيف وتطهير وغسيل واعادة تاهيل الخزانات


معمل تكنولاب البهاء جروب
 للتحاليل الكيميائية والطبية
والتشخيص بالنظائر المشعة
 للمخدرات والهرمونات والسموم
 وتحاليل المياه

مجموعة
تكنولاب البهاء جروب
لتصميم محطات الصرف الصناعى والصحى
لمعالجة مياه الصرف الصناعى والصحى
مجموعة تكنولاب البهاء جروب
المكتب الاستشارى العلمى
دراسات علمية كيميائية



معالجة الغلايات وانظمة البخار المكثف
معالجة ابراج التبريد المفتوحة
معالجة الشيللرات
مجموعة تكنولاب البهاء جروب
اسنشاريين
كيميائيين/طبيين/بكترولوجيين
عقيد دكتور
بهاء بدر الدين محمود
رئيس مجلس الادارة
استشاريون متخصصون فى مجال تحاليل وتنقية ومعالجة المياه
متخصصون فى تصنيع وتصميم كيماويات
معالجة الصرف الصناعى والصحى
حسب كل مشكلة كل على حدة
تصنيع وتحضير كيماويات معالجة المياه الصناعية
مؤتمرات/اجتماعات/محاضرات/فريق عمل متميز
صور من وحدات معالجة المياه


technolab el-bahaa group
TECHNOLAB EL-BAHAA GROUP
EGYPT
FOR
WATER
TREATMENT/PURIFICATION/ANALYSIS
CONSULTANTS
CHEMIST/PHYSICS/MICROBIOLIGIST
 
INDUSTRIAL WATER
WASTE WATER
DRINKING WATER
TANKS CLEANING
 
CHAIRMAN
COLONEL.DR
BAHAA BADR EL-DIN
0117156569
0129834104
0163793775
0174041455

 

 

 

تصميم وانشاء محطات صرف صناعى/waste water treatment plant design

technolab el-bahaa group
egypt
We are a consultants in water treatment with our chemicals as:-
Boiler water treatment chemicals
Condensated steam treatment chemicals
Oxygen scavenger treatment chemicals
Ph-adjustment treatment chemicals
Antiscale treatment chemicals
Anticorrosion treatment chemicals
Open cooling tower treatment chemicals
Chillers treatment chemicals
Waste water treatment chemicals
Drinking water purification chemicals
Swimming pool treatment chemicals
Fuel oil improver(mazote/solar/benzene)
technolab el-bahaa group
egypt
We are consultants in extraction ,analysis and trading the raw materials of mines as:-
Rock phosphate
32%-30%-28%-25%
Kaolin
Quartez-silica
Talcum
Feldspae(potash-sodumic)
Silica sand
Silica fume
Iron oxid ore
Manganese oxid
Cement(42.5%-32.5%)
Ferro manganese
Ferro manganese high carbon

 

water treatment unit design


 

وكلاء لشركات تركية وصينية لتوريد وتركيب وصيانة الغلايات وملحقاتها
solo agent for turkish and chinese companies for boiler production/manufacture/maintance

 

وكلاء لشركات تركية وصينية واوروبية لتصنيع وتركيب وصيانة ابراج التبريد المفتوحة

 

تصميم وتوريد وتركيب الشيللرات
design/production/maintance
chillers
ابراج التبريد المفتوحة
مجموعة تكنولاب البهاء جروب
المكتب الاستشارى العلمى
قطاع توريد خطوط انتاج المصانع
 
نحن طريقك لاختيار افضل خطوط الانتاج لمصنعكم
سابقة خبرتنا فى اختيار خطوط الانتاج لعملاؤنا
 
1)خطوط انتاج العصائر الطبيعية والمحفوظة والمربات
2)خطوط انتاج الزيوت الطبيعية والمحفوظة
3)خطوط انتاج اللبن الطبيعى والمحفوظ والمبستر والمجفف والبودرة
4)خطوط تعليب وتغليف الفاكهة والخضروات
5)خطوط انتاج المواسير البلاستيك والبى فى سى والبولى ايثيلين
6)خطوط انتاج التراى كالسيوم فوسفات والحبر الاسود
7)خطوط انتاج الاسفلت بانواعه
Coolمحطات معالجة الصرف الصناعى والصحى بالطرق البيولوجية والكيميائية
9)محطات معالجة وتنقية مياه الشرب
10)محطات ازالة ملوحة البحار لاستخدامها فى الشرب والرى
11)الغلايات وخطوط انتاج البخار الساخن المكثف
12)الشيللرات وابراج التبريد المفتوحة وخطوط انتاج البخار البارد المكثف
 
للاستعلام
مجموعة تكنولاب البهاء جروب
0117156569
0129834104
0163793775
 
القاهرة-شارع صلاح سالم-عمارات العبور-عمارة 17 ب
فلا تر رملية/كربونية/زلطيه/حديدية

وحدات سوفتنر لازالة عسر المياه

مواصفات مياه الشرب
Drinking water
acceptable
values

50

colour

acceptable

Taste

nil

Odour

6.5-9.2

ph

 

1 mg/dl

pb

5 mg/dl

as

50 mg/dl

cn

10 mg/dl

cd

0-100mg/dl

hg

8 mg/dl

f

45 mg/dl

N02

1 mg/dl

Fe

5 mg/dl

Mn

5.1 mg/dl

Cu

200 mg/dl

Ca

150 mg/dl

Mg

600 mg/dl

Cl

400 mg/dl

S04

200 mg/dl

Phenol

15 mg/dl

zn

 

 

الحدود المسموح به
ا لملوثات الصرف الصناعى
 بعد المعالجة
Acceptable
values
treated wate water
7-9.5

ph

25-37 c

Temp

40 mg/dl

Suspended solid

35 mg/dl

bod

3 mg/dl

Oil & grase

0.1 mg/dl

hg

0.02 mg/dl

cd

0.1 mg/dl

cn

0.5mg/dl

phenol

1.5 ds/m

conductivity

200 mg/dl

na

120 mg/dl

ca

56 mg/dl

mg

30 mg/dl

k

200 mg/dl

cl

150 mg/dl

S02

0.75 mg/dl

Fe

0.2 mg/dl

Zn

0.5 mg/dl

Cu

0.03 mg/dl

Ni

0.09 mg/dl

Cr

0.53 mg/dl

لb

0.15 mg/dl

pb

 





pipe flocculator+daf
plug flow flocculator
lamella settels

محطات تحلية مياه البحر بطريقة التقطير الومضى على مراحل
MSF+3.jpg (image)
محطات التقطير الومضى لتحلية مياه البحر2[MSF+3.jpg]
some of types of tanks we services
انواع الخزانات التى يتم تنظيفها
ASME Specification Tanks
Fuel Tanks
Storage Tanks
Custom Tanks
Plastic Tanks
Tank Cleaning Equipment
Double Wall Tanks
Septic Tanks
Water Storage Tanks
Fiberglass Reinforced Plastic Tanks
Stainless Steel Tanks
Custom / Septic
مراحل المعالجة الاولية والثانوية والمتقدمة للصرف الصناعى

صور مختلفة
من وحدات وخزانات معالجة الصرف الصناعى
 التى تم تصميمها وتركيبها من قبل المجموعة

صور
 من خزانات الترسيب الكيميائى والفيزيائى
 لوحدات معالجة الصرف الصناعى
المصممة من قبل المحموعة



technolab el-bahaa group


technolab el-bahaa group


technolab el-bahaa group

technolab el-bahaa group


technolab el-bahaa group


technolab el-bahaa group


technolab el-bahaa group


technolab el-bahaa group


technolab el-bahaa group


technolab el-bahaa group




مياه رادياتير اخضر اللون
بريستول تو ايه
انتاج شركة بريستول تو ايه - دمياط الجديدة
مجموعة تكنولاب البهاء جروب

اسطمبات عبوات منتجات شركة بريستول تو ايه-دمياط الجديدة

مياه رادياتير خضراء فوسفورية

من انتاج شركة بريستول تو ايه 

بترخيص من مجموعة تكنولاب البهاء جروب


زيت فرامل وباكم

DOT3



شاطر | 
 

 المقارنة بين دى اكس والشيللر المائى لتكييف المصانع والوحدات الكبيرة الحجم

استعرض الموضوع السابق استعرض الموضوع التالي اذهب الى الأسفل 
كاتب الموضوعرسالة
Admin
Admin
avatar

عدد المساهمات : 3560
تاريخ التسجيل : 15/09/2009
العمر : 49
الموقع : مصر

مُساهمةموضوع: المقارنة بين دى اكس والشيللر المائى لتكييف المصانع والوحدات الكبيرة الحجم   الخميس يونيو 11, 2015 5:11 am

Comparison 
of 
DX 
and 
Chilled Water Central Air Conditioning Plants


• Introduction


The Direct Expansion (DX) and Chilled Water central air conditioning plants are both used at different places depending on the applications and size of the place to be air conditioned. 


Both of them have their own advantages and disadvantages.


• 1) DX Central Air Conditioning Plants are more Efficient


In the DX type of central air conditioning plants the air used for cooling the room is directly chilled by the refrigerant in the cooling coil of the air handling unit. 


Due to this heat transfer process is more efficient, since there is no middle agency involved for the heat transfer resulting in higher cooling efficiency.


In case of the chilled water system, the cooling effect from the refrigerant is first transferred to the chilled water, which is then used to chill the air used for cooling the room. 


There is some loss of the cooling effect when it is being transferred from the refrigerant to the chilled water and from there to the air due to which the chilled water systems have lesser cooling efficiency. 


The chilled water acts as the secondary medium for cooling the room air in air handling unit.


Further, the chilled water has to flow long distance along the whole building. 


On its way it tends to get heated due to friction of flow and also due to surrounding heat absorption. 


The chilled water also has to be pumped by the pump, which adds more heat to it. 


Thus as the chilled water flows from the chiller to the air handling unit and again back to the chiller, apart from the heat from air, it also absorbs lots of additional heat, which leads to high increase in its temperature. 


The chiller has to remove this additional heat from the water due to which its efficiency decreases or rather additional power is required to remove this additional heat. 


In the DX type of central air conditioning plants the refrigerant travels only through the small distances and there is no pump involved so the additional heat absorption is less, which makes the DX plants even more efficient.




• 2) The Chilled Water Plants can be used for the Large Multi Storey Buildings


In the direct expansion types of the central air conditioning plant, the refrigerant like R22 flows through the whole air conditioning system including the air handling unit. 


When the refrigerant flows in the refrigeration piping there is lots of drop in its pressure. 


Due to this the length of the refrigeration tubing and the distance between the condenser and the air handling unit should be kept minimum possible.


If the air handling unit is kept at the height more than the condenser, the loss in pressure is pronounced since refrigerant travelling from the condenser to the air handling unit is in liquid state. 


As the distance between the air handling unit and the condenser increases the loss in pressure also increases. 


At certain point the losses may be so high that the refrigerant may not be able to reach the air handling unit, leading to complete failure of the system. 


At the larger height difference there is also oil return problem from the refrigerant to the compressor.


Due to these reasons, in direct expansion type of the central air conditioning plant there is limitation on the distance between the condenser and the air handling unit. 


The distance between the two cannot be too high. 


This limits the application of the direct expansion type of central air conditioning systems to the small buildings or a number of rooms on the single floor. 


In such cases the plant room and air handling room and the rooms to be cooled are located on the same floor. 


The height difference between the condenser and the air handling units has to be quite reasonable so that they can function well.


One of the solutions to increase the capacity of the DX systems can be to increase the number of air handling units on upper floors. 


But with this will be additional number of joints in the refrigerant tubing from which there will be higher chances of leakage of highly expensive refrigerant. 


This leads to too many operational and maintenance problems.


One may think that we can employ compressor of very high capacity to increase the refrigerant pressure, but this will lead to highly excessive capital and running costs of the plant. 


This is because we will have to install the compressor of capacity much higher than needed.


Thus the direct expansion types of the air conditioning plants can be used only for smaller buildings or various rooms on the same floor.


There are no pressure loss problems in the chilled water system. 


In this system chilled water is pumped by the pump at very high pressure, which is good enough to carry it to various floors of the multi storey building. 


The losses in the pressure of water are accommodated by the sufficient capacity of the pump, which has low capital and running cost. 


Further, the water doesn’t carry any oil so there are no oil return problems.


In case of the chilled water system the compressor, condenser, expansion valve and the chiller are all kept at the same level in the single plant room. 


There is no problem as such of the height difference between the condenser and the air handling unit since the refrigerant does not travels to the air handling unit. 


The flow of the refrigerant is limited to the chiller plant. 


The water chilled in the chilled flows to the various air handling units kept on different floors of the building. 


The whole arrangement and the structure of the chilled water type of central air conditioning plant makes it more suitable for cooling the large multi storey buildings and even for very long distances along the same floor level.


 This makes the chilled water central air conditioners more popular than the direct expansion type ones.
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عدد المساهمات : 3560
تاريخ التسجيل : 15/09/2009
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مُساهمةموضوع: رد: المقارنة بين دى اكس والشيللر المائى لتكييف المصانع والوحدات الكبيرة الحجم   الخميس يونيو 11, 2015 5:34 am

[img][/img]

[img][/img]
الرجوع الى أعلى الصفحة اذهب الى الأسفل
معاينة صفحة البيانات الشخصي للعضو http://technolabelbahaagp.googoolz.com
Admin
Admin
avatar

عدد المساهمات : 3560
تاريخ التسجيل : 15/09/2009
العمر : 49
الموقع : مصر

مُساهمةموضوع: رد: المقارنة بين دى اكس والشيللر المائى لتكييف المصانع والوحدات الكبيرة الحجم   الخميس يونيو 11, 2015 6:03 am

[ltr]Comparison with Chiller system[/ltr]

[ltr]Chilled Water Systems have been the preferred choice for many HVAC applications in the building sector, however it is estimated that air conditioning requirements specifically in the sectors such as Shopping Malls, Hotels & Commercial Buildings will see a significant trend shift to DX-Central Systems.[/ltr]

[ltr]This is due to the flexibility, cost savings , energy efficiency and many other advantages that a DX Central system offers over a chilled water system. [/ltr]

[ltr]As a result, HVAC designers and consultants are now advocating DX central systems to their developer and building owner clients.[/ltr]

[ltr]The below comparison, with nominated parameters, high lights some of the advantages offered by a DX Central system installed in place of conventional chilled water plant.[/ltr]

 
 
 
 
 
 
[ltr]Parameter[/ltr]



[ltr]DX-Central[/ltr]



[ltr]Chiller[/ltr]



[ltr]Space[/ltr]



[ltr]Eliminates space requirement for mechanical plantroom & increases leasable floor area.[/ltr]



[ltr]Large mechanical plantroom required.[/ltr]



[ltr]Energy Cost[/ltr]



[ltr]Energy cost savings due to localized system configuration and designated unit operation on as required basis. Only the occupied spaces are conditioned.[/ltr]



[ltr]The chiller system operates regardless of load demand, ie 10% cooling demand will generate cooling call for entire plant.  [/ltr]



[ltr]AMC cost[/ltr]



[ltr]DX central package units are inexpensive to maintain, reliable operational track record and faults are quickly rectified.[/ltr]



[ltr]Central plant chiller AMC costs are high due to  labour intensive maintenance regimes and expensive capital components.[/ltr]



[ltr]Common Cost[/ltr]



[ltr]Limited to maintenance of cooling tower & pumps  only by the landlord[/ltr]



[ltr]Landlord is responsible for  the Chillers, pumps,cooling towers, hydronic systems, BMS systems and large range of specialist kit and componentry.[/ltr]



[ltr]Skilled Labour Requirements[/ltr]



[ltr]Does not require specialized, trained technicians[/ltr]



[ltr]Specialized, trained central plant chilled water technicians required for maintenance and repair.[/ltr]



[ltr]Spare Parts[/ltr]



[ltr]Small, economical and easily available, complete range of parts can be stored at site for low cost.[/ltr]



[ltr]Chiller parts are expensive, available only from the manufacturer and not ex-stock in most cases.[/ltr]



[ltr]Compressor Failure[/ltr]



[ltr]In the event of compressor failure, the single machine only is effected and the compressor is easily and quickly replaceable.[/ltr]




[ltr]The entire machine can also be replaced in just 2-3 hours at low cost.[/ltr]



[ltr]Chiller compressor or motor failure results in extended downtime of several weeks and very high cost.[/ltr]



[ltr]Complete Failure[/ltr]



[ltr]Complete failure of machine only affects the local service area[/ltr]



[ltr]Complete failure of chiller can affect the whole building and  the rental income in addition to significant inconvenience.[/ltr]



[ltr]Power management[/ltr]



[ltr]Multi-metering can be installed per unit allowing individual tenancies to be responsible for energy consumption outgoings.[/ltr]



[ltr]Chiller system is common for all tenants causing difficulty with running cost segregation between tenancies.[/ltr]



[ltr]Flexibility[/ltr]



[ltr]Adding or deleting to an existing DX central system for  Building modifications or extensions is easily undertaken at low cost.[/ltr]



[ltr]Chilled water central plant equipment is fixed at initial design stage and cannot be easily altered.[/ltr]



[ltr]Flexibility of Starting the Building Possession.[/ltr]



[ltr]Staged developments can benefit by way of proportional cost for unit and equipment purchase in line with development construction. Owner can install the cooling tower & piping at relatively low cost and install DX machines only to occupied areas as the space is sold or leased.[/ltr]



[ltr]Staged developments must make full up front investment for all HVAC major components. No added value available for floor by floor staged leasing or selling.[/ltr]



[ltr]Capital Cost[/ltr]



[ltr]Lower cost in terms of start up capital as compared to a chiller system[/ltr]



[ltr]Higher capital cost investment upfront in the procurement of chiller to start the system.[/ltr]



[ltr]Installation[/ltr]



[ltr]Installation process is efficient and easily managed in building construction schedule without technical complications and delays. Commissioning does not require specialist skills and can be undertaken quickly and cost effectively.[/ltr]



[ltr]Chiller system installation  requires high degree of technical input and may require consultant supervision. Possible construction delays. Commissioning is more elaborate with critical processes.[/ltr]



[ltr]Piping[/ltr]



[ltr]Condensor water pipework design and installation is a simple process, insulation is not required therefore no condensation risk in ceiling and roof slabs etc. No thermal loss or long term deterioration risk. Also no harmful carcinogenic insulation material in occupied space.[/ltr]



[ltr]All chilled water pipe from plant room to each machine requires insulation.  Condensation  and efficiency problems, resulting in thermal loss, can develop after installation or over a period of time after insulation deterioration. Chilled water system design and installation is critical for effective transportation of cooling water throughout building. Minor errors can create performance problems.[/ltr]



[ltr]Essential services power Back UP[/ltr]



[ltr]Back up power systems for equipment servicing essential areas is easily and cost effectively provided with minimum DG  set for emergency operation.[/ltr]



[ltr]Any DG back up system requirements need to account for the entire power load of the HVAC plant. This can result in additional cost  for duplication of HVAC units which can be run from smaller DG sets.[/ltr]




 
 
[ltr]Electrical installation and mains cabling[/ltr]



[ltr]DX units start and stop at different times reducing the electrical maximum demand calculation for the building  allowing smaller mains electrical cabling. Also smaller transformers and Capacitor Banks due to no requirement for Voltage drop allowance on high Chiller Compressor start up  current draw.[/ltr]



[ltr]High starting current demand requiring allowance in building electrical system design.[/ltr]



[ltr]Electrical Fluctuations[/ltr]



[ltr]DX-Central system is robust and cooperative with fluctuating and unreliable electrical power supply.[/ltr]



[ltr]More prone to failure and damage with such occurrences specifically after the initial warranty period. CVT installation is essential. Chiller unit micro-processor control systems are very susceptible to erratic power suppIy conditions.[/ltr]



[ltr]Controls/BMS/Operators[/ltr]



[ltr]DX-Central systems do not require expensive BMS or site operators for  optimum system performance.[/ltr]



[ltr]Operators and BMS systems are required to operate  chiller water systems. This provides operating cost additions.[/ltr]



[ltr]Efficiency[/ltr]



[ltr]The DX-Central System utilizes the most efficient form of airconditioning technology with refrigerant to air without a secondary cooling medium.  [/ltr]




[ltr]There is no requirement for removing the heat from large volumes of cooling water before the airconditioning process can commence. [/ltr]




[ltr]The refrigerant circuit is compact and placed directly in the area to be cooled, providing maximum efficiency, less refrigerant routing and low power consumption.[/ltr]



[ltr]Two mediums used introducing many possible inefficiencies and losses. Quite often, the advertised chiller unit efficiency does not account for the entire chilled water system.[/ltr]



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