1

# Heat transfer 1) 2.5 m/s of air at 150°C is used to heat (0.25 + /250)=0.254...

## Question

###### Heat transfer 1) 2.5 m/s of air at 150°C is used to heat (0.25 + /250)=0.254...

Heat transfer

1) 2.5 m/s of air at 150°C is used to heat (0.25 + /250)=0.254 kg/s of 20°C water. The heat exchanger is a finned-tube cross flow heat exchanger with both sides unmixed. The overall heat transfer coefficient associated with the hot side is 120 W/(m2 °C). The hot-side area is 20 m². Assume a constant specific heat for air and water of Cecair = 1.005 kJ/(kg °C), Crewater = 4.2 kJ/(kg). The pressure of the hot air is P = 1.0 atm. The pressure of the water is high enough so that it does not boil. Find the following: NTU= (+0.01) a. the NTU for the heat exchanger b. the effectiveness of the heat exchanger € (+ 0.01) C. the net heat transfer from the hot air. q= kW (+0.5 kW) d. the exit temperature of the air. Thexit = C(+ 0.5))

#### Similar Solved Questions

##### Bob attended school from 1997 until 2007 (Business major who didnt attend tax or finance enough)...
Bob attended school from 1997 until 2007 (Business major who didnt attend tax or finance enough) and took loans to finance his education. in 2018 he had interest from these student loans of \$2800 and they had AGI of \$142000. How much of the interest is deductible in 2018 assuming he is married filin...
##### Can you help me fill out the table im confused O.N . NaOCI (5%) O NUNH...
can you help me fill out the table im confused O.N . NaOCI (5%) O NUNH NaOH isocyanate intermediate Figure 1. Reaction Scheme. Prelab Report Objectives (2 pts): Describe the central objectives of this experiment. Describe one learning outcome you expect to have gained at the end of this experimen...
##### Write correct states, balance, and name reaction -acetic acid and calcium carbonate -hcl and magnesium
write correct states, balance, and name reaction -acetic acid and calcium carbonate -hcl and magnesium...
##### A manufacturing company has a beginning finished goods inventory of \$28,200, cost of goods manufactured of...
A manufacturing company has a beginning finished goods inventory of \$28,200, cost of goods manufactured of \$58,400, and an ending finished goods inventory of \$27,500. The cost of goods sold for this company is: A. \$114,100 B. \$57,700 C. \$2,700 D. \$85,900 E. \$59,100...
##### Problem 3: The statically indeterminate propped cantilever beam is supported by a roller at A and...
Problem 3: The statically indeterminate propped cantilever beam is supported by a roller at A and is fixed at B. The beam is subject a uniformly distributed load and concentrated moment as shown. E is 29000 ksi and 1 is 400 in Determine the equation of the moment as a function of x. b) a) Determine ...
##### Question 22 1 pts These three questions refer to the same scenario. An accountant at a...
Question 22 1 pts These three questions refer to the same scenario. An accountant at a chain of grocery stores has to choose a new job, and is considering various options. If we think of human capital as a set of skills, and jobs as a set of tasks, which of the jobs listed below has the lowest expec...
##### Find the exponential function f(x) = 6* that passes through the point ( – 2, 4)...
Find the exponential function f(x) = 6* that passes through the point ( – 2, 4) and has a y-intercept of 1. Oy= - (2) Oy = (2) Oy Oy= TIP Select the best answer...
##### Match each answer choice A magazine provided its from a pol 500 sults who were asked...
match each answer choice A magazine provided its from a pol 500 sults who were asked to identify the favorite pie. Among the 500 responderis, 12. chose chocolate pie, and the margin of error was given as 15 percentage ports What values dont and present the confidence level is 90%. What is the va...
##### Air at a local pressure of 650 kpa and local temperature of 280 K enter a...
Air at a local pressure of 650 kpa and local temperature of 280 K enter a frictinless adiabatic convergent- Divergent nozzle with velocity of 160m/s. the throat area of nozzle is 3.2cm^2 and the exit area is 14cm^2 and the shock occurs where the nozzle area is 8cm^2 fined the following: 1- Back pres...
##### Teldar Paper is required by the EPA to employ an air quality filter. You are evaluating...
Teldar Paper is required by the EPA to employ an air quality filter. You are evaluating several options one of which has an NPV of -86,810 over its 3 year life. Assuming you have a discount rate of 17%, what is the filters equivalent annual cost? Enter th magnitude of your answer rounded to the near...
##### Paper Helicopter Experiment Materials needed: For each pair of students, template for helicopter, paper clip, 4...
Paper Helicopter Experiment Materials needed: For each pair of students, template for helicopter, paper clip, 4 feet of string, ruler, paper to mark target. Template can be found at: Overview: A helicopter will be dropped from waist height at a target. The linear distance of the center of the helico...
##### 7. A quality control engineer samples five from a large lot of manufactured firing pins and...
7. A quality control engineer samples five from a large lot of manufactured firing pins and checks for defects. Unknown to the inspector, three of the five sampled firing pins are defective. The engineer will test the five pins in a randomly selected order until a defective is observed in which case...
##### Which of the following accurately characterizes publicity? Group of answer choices 1. It is mass selling...
Which of the following accurately characterizes publicity? Group of answer choices 1. It is mass selling that avoids paying media costs. 2. It is more expensive than all other promotion methods. 3. It is more flexible than personal selling. 4. It is any paid form of nonpersonal presentation of ideas...