What is the inner tube sur- face temperature

Assignment Help Mechanical Engineering

Reference no: EM13946058

Consider a concentric tube annulus for which the inner and outer diameters are 25 and 50 mm. Water enters the annular region at 0.04 kg/s and 25°C. If the inner tube wall is heated electrically at a rate (per unit length) of q'= 4000 W/m, while the outer tube wall is insulated, how long must the tubes be for the water to achieve an outlet temperature of 85°C? What is the inner tube sur- face temperature at the outlet, where fully developed conditions may be assumed?

Reference no: EM13946058

Questions Cloud

Differentiate between the presenting signs of symptoms : Differentiate between the presenting signs of symptoms of a 55-year-old suffering from acute bronchitis and a 55-year-old suffering from pneumonia. In your response, discuss the most typical community-acquired pathogens involved with each of these il..

Detailed description of a business situation : Your description of a business situation that presents a legal and ethical issue is clear and concise. You thoroughly addressed why your business situation is important for study using exceptional supporting ideas.

Consider the air cooling system and conditions : Consider conditions for which there is a uniform heat transfer rate per unit length, qi'= 1.25 X 105 W/m, from the exhaust gases to the pipe inner surface, while air flows through the annular passage at a rate of m· a = 2.1 kg/s.

What is the optimal number of warehouses for the firm : Suppose that the current market size is 250,000 customers, spread out over an area of 600 square miles. What is the optimal number of warehouses for the firm to operate?

What is the inner tube sur- face temperature : If the inner tube wall is heated electrically at a rate (per unit length) of q'= 4000 W/m, while the outer tube wall is insulated, how long must the tubes be for the water to achieve an outlet temperature of 85°C? What is the inner tube sur- f..

What is the cost variance, schedule variance and cpi : Use the CPI to calculate the estimate at completion (EAC) for this project. Is the project performing better or worse than planned?

Analyze the above statement in the context of singapore : Critically examine the above statement. Enumerate the general powers of Regulators and courts of law citing recent cases where action has been taken against firms in Singapore and elsewhere.

What financing strategy would you recommend for boeing : Boeing Commercial Airplane Co. manufactures all its planes in the United States and prices them in dollars, even the 50% of its sales destined for overseas markets. What financing strategy would you recommend for Boeing? What data do you need?

What are rac audits : Prepare a 2-3 page paper to include the following: What are RAC Audits? Do you feel that they have been successful? Look at specific information for your state (depends on which region you are in)

User Account

All Pages