Question: Water at an average temperature of 110C and an average velocity of 3.5 m/s flows through a 5-m-long stainless steel tube (k = 14.2 W/mK)

Water at an average temperature of 110°C and an average velocity of 3.5 m/s flows through a 5-m-long stainless steel tube (k = 14.2 W/m·K) in a boiler. The inner and outer diameters of the tube are D_i = 1.0 cm and D_o = 1.4 cm, respectively. If the convection heat transfer coefficient at the outer surface of the tube where boiling is taking place is h_o = 8400 W/m²·K, determine the overall heat transfer coefficient U_i of this boiler based on the inner surface area of the tube.

Step by Step Solution

★★★★★

3.34 Rating (157 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

Water flows through the tubes in a boiler The overall heat ... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Fundamentals Thermal Fluid Questions!

Water at an average temperature of 10oC flows in a 2.5-cm-diameter tube 6 m long at a rate of 0.4 kg/s. The pressure drop is measured as 3 kPa. A constant heat flux is imposed, and the average wall...

Water at an average temperature of 180F and an average velocity of 4 ft/s flows through a thin-walled 3/4-indiameter tube. The water is cooled by air that flows across the tube with a velocity of 12...

A solar collector provides the hot water needs of a family for a period of 8 months except for four months of winter season. The collector supplies hot water at an average temperature of 60oC and the...

Water at an average temperature of 110C and an average velocity of 2.5 m/s flows through a 7-m-long stainless-steel tube (k=14.2 W/m-C) in a boiler. The inner and outer diameters of the tube are D;=...

Reconsider Prob. 2221. Using an appropriate software, plot the overall heat transfer coefficient based on the inner surface as a function of fouling factor as it varies from 0.0001 m 2 K/W to 0.0008...

Reconsider Prob. 1124. Using EES (or other) software, plot the overall heat transfer coefficient based on the inner surface as a function of fouling factor as it varies from 0.0001 m 2 K/W to 0.0008...

Water at an average temperature of 1 0 7 C and an average velocity of 3 . 5 m / s flows through a 5 - m - long stainless steel tube ( k = 1 4 . 2 W / m K ) in a boiler. The inner and outer diameters...

Repeat Problem 1320, assuming a fouling factor Rf, i = 0.0005 m2 ( (C/W on the inner surface of the tube. Water at an average temperature of 107(C and an average velocity of 3.5 m/s flows through a...

QUESTION 2 [25 MARKS A double-pipe heat exchanger is designed to condense saturated steam as Figure 1. Water flows at an average temperature of 37.8C and an average velocity of 2.6 m's. If the inner...

need help to write a Conclusion for this experiment , brief is provieded mentioning we observed this, we observed that, we obtained this.... is not enough. In this section, you should also highlight...

Southworth Company uses a job-order costing system and applies manufacturing overhead cost to jobs on the basis of the cost of direct materials used in production. At the beginning of the current...

One year ago a par $1,000 20-year coupon bond with semiannual coupon payments was issued. The annual interest rate (that is, the coupon rate) at that time was 8.5 %. Now, a year later, the annual...

You find the following quotation for a stock (ttm = trailing twelve months): Stock (ticker) Div Yld% PE (ttm) High (ttm) Low (ttm) Volume (100) Last Change AAPL 2.92 1.56 18.17 179.63 149.37 28,789...

1 As we move inexorably toward Internet e-tailing, is branding becoming less important than in the past? Provide a report on this and the future impact of the Internet on retail marketing.

Suppose that the egg has a diameter of 200 mm. What fractional change in the internal Na+ concentration results from the fertilization-induced change in V m ? Assume that Na + ions are distributed...

Suppose that the change in Vm was caused by the entry of Ca 2+ instead of Na + . How many Ca 2+ ions would have to enter the cell per unit membrane to produce the change? (a) Half as many as for Na +...

What is the minimum amount of work that must be done by the cell to restore V m to -70 mV? (a) 3 mJ; (b) 3 J; (c) 3 nJ; (d) 3 pJ. Upon fertilization, the eggs of many species undergo a rapid change...

Calculate payback period, net present value and internal rate of return for the project? Assume that the company's cost of capital is 12%. Case Study (100%) MD006089 Benetton Plc is an established...

Show steps to get this answer please thank you, not with excel though. You are choosing between two projects. The cash flows for the projects are given in the following table ( $ million): a. What...

A firm has invested $500 in a new machine that is expected to last for the next 5 years. The machine will be depreciated on a straight line basis down to zero by the end of its 5 year life. The firm...