# نداء الى جميع المهندسين ضروري temperature calc.

#### ABDOH10

##### عضو جديد
السلام عليكم
:56:
ما اطول عليكم انا طالب ادرس هندسة مدنية في جامعة في برطانيا
المهم في سؤال من دكتور في قسمنا عقدني جدا وحاولت فيه جدا
وما بقي عندي وقت ولازم اقدم الحل قبل الويك اند......:4::4:
قلت مالك الا اخوانك في المهندسين العرب واكيد راح تساعدوني لان مالي غيركم
والسؤال هو اللي بنزله الحين وطبعا بالمرفقات الرسمه ما قدرت انزلها هنا.....واللي ما يقدر يساعدني يدعيلي دعوه ربي يوفقكم جميع وبنتظار ردكم
Building Services Engineering
BSV09114
Year 2011/2012
[FONT=Arial,Arial][FONT=Arial,Arial]The plan and section through an office in a multi-storey office building are given. The orientation of the building is such that the external wall of the office faces due south.
The latitude of the building is 51.7°N.
Rooms adjacent to, above and below the office can be assumed to be at the same environmental temperature as the office.
The activities carried out by the workers are typical of office work in terms of Met value. The office has a typical Relative Humidity of 50% and the clothing of the workers is typically light summer clothing during the summer months.
The ventilation system provides a typical Relative Air Velocity over the workers of 0.2 m/s and an overall ventilation rate of 2.0 air changes per hour in the office.
You are asked by the building owners to produce a report (With all calculations in an appendix) of the predicted mean and peak internal environmental temperatures in August (based on 22
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[/FONT][FONT=Arial,Arial][FONT=Arial,Arial]nd[/FONT][/FONT][FONT=Arial,Arial][FONT=Arial,Arial]) and to compare the temperatures with the optimum comfort temperature.
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[/FONT]one [FONT=Arial,Arial][FONT=Arial,Arial]practical method of reducing peak temperatures from solar heat gain [/FONT][/FONT]including [FONT=Arial,Arial][FONT=Arial,Arial]supporting calculations showing the effectiveness of the method. [/FONT][/FONT]
[FONT=Arial,Arial][FONT=Arial,Arial]
[/FONT]
[/FONT][FONT=Arial,Arial][FONT=Arial,Arial]The specifications of the elements are as follows: External walls [/FONT][/FONT]
 Brick outer leaf
[FONT=Arial,Arial][FONT=Arial,Arial]L/W concrete block inner leaf
[/FONT]
[/FONT] Dense plaster on inside face
 13mm polystyrene insulation in cavity
 Dark external surface
 U-value =0.7 W/m2°K.
[FONT=Arial,Arial][FONT=Arial,Arial]Windows [/FONT][/FONT]
 Single glazing with clear glass and no shading
 U-value = 5.7 W/m2oK
[FONT=Arial,Arial][FONT=Arial,Arial]Internal walls [/FONT][/FONT]
[FONT=Arial,Arial][FONT=Arial,Arial]L/W concrete block plastered both sides
[/FONT]
[/FONT][FONT=Arial,Arial][FONT=Arial,Arial]Floor [/FONT][/FONT]
 concrete slab with screed and carpet
[FONT=Arial,Arial][FONT=Arial,Arial]Ceiling [/FONT][/FONT]
 underside of concrete slab with screed and carpet

مشاهدة المرفق 78211

#### المرفقات

• BSV09114_TR2_11-12_CW1.pdf
75.7 KB · المشاهدات: 81

### مواضيع مماثلة

#### ABDOH10

##### عضو جديد
يالله يا كريم 60 مشاهده ومافي ولا رد.....!!!
وينكم يا مهندسين up up

#### ABDOH10

##### عضو جديد
يالله ياكريم 106 مشاهده ولا رد.....!!!!!

up up

#### anass81

##### عضو معروف
السلام عليكم

صراحة موضوعك معقد بعض الشيء ويتطلب حسابات ليست انشائية بل هي حسابات متعلقة بدرجة الحرارة الداخلية وكيفية الحصول عليها ولا اذكر انها قد مرت معنا في دراستنا الجامعية

لو عندك اي مرجع او طريقة حساب , ممكن ان نطلع عليه ونناقش سويا

#### TAREK AMIN 1972

##### عضو جديد
your question is related to HVAC engineers so check with them her in the forum, that is not a civil or structural engineering question