أرجو المساعدة

بنت الريان · 4 يوليو 2010، 13:50

السلام عليكم
أرجو إنكم تساعدوني في حل هذه الأسئلة على شكل تقرير

السؤال الأول
what is venturi
السؤال الثاني
how venturi is applied in industry in designing steam jet to generate avacuum

السؤال الثالث
show how first law of thermodynamics applied in converting high pressure steam into vacuum?

زحمه212 · 4 يوليو 2010، 20:23

هلا اختي

بقدر اساعدك في هذي
عندي فكره عنهن
اعتقد هذا تابع حق البروسيس
المهم ما علينا

بس متى تبغيهن
وتقريبا كم عدد الاسطر اللي تبيه لكل سؤال

اتمنى اتردي علي في اقرب وقت

وان شاء الله اقدر اساعدك

بنت الريان · 5 يوليو 2010، 12:34

مرحبا أخوي
أريدهن باكر بس بالإنجلش
كثر ماتقدر إكتب

بنت الريان · 5 يوليو 2010، 16:06

وينكم

زحمه212 · 7 يوليو 2010، 2:41

اهلين اختي
بحط لج الاجوبه اليوم او باكر الخميس ان شاء الله

زحمه212 · 7 يوليو 2010، 12:14

what is venturi

[FONT=&quot]The Venturi effect is the reduction in fluid pressure that results when a fluid flows through a constricted section of pipe.
[/FONT]
[FONT=&quot]The word Venturi came from name of a Italian scientist [/FONT][FONT=&quot][FONT=&quot][/FONT][/FONT]

how venturi is applied in industry in designing steam jet to generate avacuum

[FONT=&quot]Venturies and Orifice plates are widely used in industries to measure the flow rate of gases and liquids. The working principle is simple and flow is measured using the differential pressure principle.

Even for a wind to blow there has to be a low pressure and a high pressure. Hence if there is a flow (created naturally or artificially), there is a high pressure upstream and low pressure downstream.

Differential pressure transmitters (DPT's) utilize this principle to measure this pressure difference and transmit the pressure difference signal to a process indicator or controller. This signal is processed by the indicator (meter) and scaled or integrated to engineering parameters like flow rate, tantalization, speed, volume etc., using specific formulas for the particular type of application and medium (gas or fluid).

To summarize, ventures and orifices generate a differential pressure which if integrated with time, can then be used to convert into any engineering parameter like flow rate, quantity, speed etc. and can be used in any industrial, automotive, aeronautical, domestic or just about any field - which comes to imagination.[/FONT]

show how first law of thermodynamics applied in converting high pressure steam into vacuum

[FONT=&quot]Otto von Guericke was the inventor of the nothing we now call a vacuum. To be more precise, Otto von Guericke proved that a vacuum could exist, before Guericke people did not believe that a vacuum was possible. Creating a vacuum was essential for all kinds of further research into electronics and other innovations. Besides being an inventor and a philosopher, Otto von Guericke served as the mayor or Burgermeister [/FONT]

[FONT=&quot]Guericke's vacuum pumps[/FONT]

[FONT=&quot]The hand bellows, used by early smelters and blacksmiths for working iron and metals, was a simple type of air compressor and the first pneumatic device. During the 17th century, Otto von Guericke experimented with and improved air compressors. In 1650, Otto von Guericke invented the air pump, used to create a partial vacuum.[/FONT]

[FONT=&quot]In 1663, Guericke demonstrated the power of a vacuum with his Magdeburg Hemispheres to Emperor Ferdinand III. During public demonstrations, teams of horses would attempt to pull the hemispheres apart which were held together by the force of atmospheric pressure created using his vacuum pump.[/FONT]

زحمه212 · 7 يوليو 2010، 15:09

هلا اختي

الجواب اللي فوق من النت مع بعض التعديلات والتغير فيه

وهذا الجواب غير باسلوبي ومختصر
بس فيه بعض الملاحظات بذكرهن تحت

what is venturi

it is measure fluid flow
[B]

[B]how venturi is applied in industry in designing steam jet to generate avacuum

هذا السؤال شوفي الحل اللي فوق كاتبنه بصراحه ما فهمته زين وتقريبا الحل ماله نفس حل السؤال الاخير

[/B][/B][B][B]show how first law of thermodynamics applied in converting high pressure steam into vacuum
[/B]
اختي في هذا السؤال
first low cant converting high pressure steam into vacuum but second law can
هذا اللي اعرفه اعتقد واضح شوه اقصد
بس اكنتي اكتبي الحل اللي كاتبه تحت وان شاء الله يكون اللي تبيه
عندك الحل اللي فوق من النت مع بعض التعديل
وهذا الحل من عندي

by using nozzles the high pressure steam will be converted to low pressure ( vacuum ) . the principle involved is converting potential energy ( pressure ) to kinetic energy ( velocity ) i

وسوري على التاخير والسموحه على التقصير
بالتوفيق ان شاء الله

^ _ ^[/B]

زحمه212 · 9 يوليو 2010، 19:22

هلا اختي ريان

هذا الحل لكل شي مع الرسم وحل وافي وان شاء الله يكون صح
بالتوفيق عاد ان شاء الله

بالتوفيق

تحياتي لج

زحمـــ212ـــــه

^ _ ^

بنت الريان · 11 يوليو 2010، 12:20

تسلم أخوي وماجصرت
والسموحة ع لإزعاج

زحمه212 · 11 يوليو 2010، 14:26

العفو اختي

Nothing Is Impossible · 13 يوليو 2010، 0:44

ما شاء الله ياخوي تسلم يارب :)

وبالتوفيق خيتووو الريان :)

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