(b) The duct of an air conditioning system has rectangular cross section 30 cm x 45...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
(b) The duct of an air conditioning system has rectangular cross section 30 cm x 45 cm. Air at 18-C is flowing through the duct at 8 m/s. Using Dittus-Boelter equation, determine the filloving Equivalent diameter of rectangular duct. (2 marks) (ii) The heat transfer coefficient. (6 marks) (i) Heat leakage from the duct per unit length per unit temperature difference. (2 marks) Data: Thermal conductivity of air = 0.026 W/(m.K). Density = 1.205 kg/m Viscosity - 1.81 x 10 N.s/m? Specific heat = 1005 J/(kg K) (b) The duct of an air conditioning system has rectangular cross section 30 cm x 45 cm. Air at 18-C is flowing through the duct at 8 m/s. Using Dittus-Boelter equation, determine the filloving Equivalent diameter of rectangular duct. (2 marks) (ii) The heat transfer coefficient. (6 marks) (i) Heat leakage from the duct per unit length per unit temperature difference. (2 marks) Data: Thermal conductivity of air = 0.026 W/(m.K). Density = 1.205 kg/m Viscosity - 1.81 x 10 N.s/m? Specific heat = 1005 J/(kg K)
Expert Answer:
Answer rating: 100% (QA)
Design Air Hows at 18c 8 mls 30cm Sipeed 45cm g reetingul... View the full answer
Related Book For
Posted Date:
Students also viewed these chemical engineering questions
-
Air enters the duct of an air-conditioning system at 15 psia and 50F at a volume flow rate of 450 ft3/min. The diameter of the duct is 10 in, and heat is transferred to the air in the duct from the...
-
A cylindrical air duct in an air conditioning system has a length of 5.5 m and a radius of 7.2 10-2 m. A fan forces air ( = 1.8 10-5 Pa s) through the duct, so that the air in a room (volume = 280...
-
An air conditioning system operates at a total pressure of 1 atm consists of a heating section and humidifier which supplies wet steam (saturated water vapor) at 1 atm. Air enters the heating section...
-
Which of the following divisions of plants does NOT have a well differentiated body? A) Gymnosperms B) Bryophyta C) Thallophyta D) Pteridophyta
-
Doug Brackett runs Downtown Automotive in Nelson, BC. The business is always under pressure to complete repairs quickly, correctly, and at a fair price. Doug is trying to understand how many...
-
Abby consumes only apples. In year 1, red apples cost $1 each, green apples cost $2 each, and Abby buys 10 red apples. In year 2, red apples cost $2, green apples cost $1, and Abby buys 10 green...
-
What activities in software development can benefit from applying patterns?
-
The client is the chairman of the board of directors of an Ohio corporation. The board of directors has decided to merge the corporation with another Ohio corporation. The client wishes to know if...
-
Public Company acquired the net assets of Sun Company by paying cash $420,000. At that time, the book value of the net assets of Sun Company was $300,000 and the fair value its net assets was...
-
There is a firm in Walla Walla, an isolated site with a labor force of 20 workers. During boom the firm faces a demand curve of P=100-Q. During recession it faces a curve of 80-2Q. Boom and recession...
-
A BJT has an Early voltage of 80 V The collector current is IC = 0.60 mA at a collector-emitter voltage of VCE =2 V (a) Determine the collector current at VCE = 5 V (b) What is the output resistance?
-
Draw a binary search tree using the following words. Consider dictionary order of the words. Job, Five, Suffer, Smooth, Remarkable, Bird, Carry, Design. Show the postfix notation for the following...
-
1) Find the Denavit Hartenberg parameters of the robots shown 2) Using a symbolic toolbox (matlab or python or ?) to express T- for i = 1,...,n and To transformation matrices
-
Tomato plant can grow by only utilizing the available soil and rain sources. However, with a desired amount of irrigation and fertilization, tomato harvest can be maximized. Question 1: a) Without...
-
Given the following data for demand at the XYZ Company, calculate the monthly forecast using a 3-month moving average and simple exponential smoothing (SES) with a = 0.4. When using SES, use the...
-
The following is Sandhill Photo Tours Limited's unadjusted trial balance at its year end. January 31, 2024. The company adjusts its accounts annually. Cash Accounts receivable Supplies Prepaid rent...
-
Critical Thinking Question: You are working in a long - term care facility as a support worker. With two young children and an ailing parent to look after at home, you are now starting to show signs...
-
The nitrogen atoms in N2 participate in multiple bonding, whereas those in hydrazine, N2H4, do not. (a) Draw Lewis structures for both molecules. (b) What is the hybridization of the nitrogen atoms...
-
Calculate the velocity in ft/s of a 30-lb object if it has a kinetic energy of 10 ft-lb. The formula for kinetic energy is KE = mv 2 , where m = mass and v = velocity.
-
A pitot-static tube is inserted in a pipe carrying water at 10C. A differential manometer using mercury as the gage fluid shows a deflection of 106 mm. Calculate the velocity of flow.
-
Convert 2.05 square meters to square millimeters.
-
A diver leaps from a high platform, speeds up as she falls, and then slows to a stop in the water. How do you define the system so that the energy changes are all transformations internal to an...
-
When your hands are cold, you can rub them together to warm them. Explain the energy transformations that make this possible.
-
Figure Q10.24 shows a potential-energy diagram for a particle. The particle is at rest at point A and is then given a slight nudge to the right. Describe the subsequent motion. FIGURE Q10.24 Energy...
Study smarter with the SolutionInn App