# 1) 2.5 m3/s of air at 150°C is used to heat 0.342 kg/s of 20°C water....

###### Question: 1) 2.5 m3/s of air at 150°C is used to heat 0.342 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 Crezia = 1.005 kJ/(kgº), Crewater = 4.2 kJ/(kg °C). 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 E = (+ 0.01) C. the net heat transfer from the hot air. II kW (+0.5 kW) d. the exit temperature of the air. Thexit = °C (+ 0.5 °C)

#### Similar Solved Questions

##### Help pls Question 3 (a) A 60 kg block is at rest on a smooth horizontal...
help pls Question 3 (a) A 60 kg block is at rest on a smooth horizontal surface as shown in Fig. 23a. A force of 90 N acting at an angle of 35° is applied to the block for 7s. Determine the final velocity and the normal force which the smooth surface exerts on the block during the time interv...
##### An 86 year old male is admitted from the PACU after a slow recovery from anesthesia...
An 86 year old male is admitted from the PACU after a slow recovery from anesthesia following a procedure to replace his pacemaker. The patient has a history of diabetes, peripheral vascular disease, and peripheral neuropathy. The patient’s daughter requests an ice pack to reduce swelling at t...
##### Z 12 m F 16 F = -(795 N) Determine the tension in each cable and...
Z 12 m F 16 F = -(795 N) Determine the tension in each cable and the reaction components the ball and s ZZZZZ...
##### 15. Question Details Let f(x) = x2-4 and g(x) = In x. The domain of f(g(x))...
15. Question Details Let f(x) = x2-4 and g(x) = In x. The domain of f(g(x)) is (0,e-20 [e?,..) (-2,-2) (e2,00) [0,e2] [e 2e2] [-2,2] 0 O Type here to search...
##### Please solve this question ?
A particle's position vector as function of time ,in polar coordinates, is given by  vecr = 2k cos( (ωt)/2)hat r & where dotθ = ω is constant. Find the ratio a_r/a_θ for this particle ,where a_theta and a_r are components of acceleration in polar co-ordinate...
##### A piece of construction equipment is purchased for $110,000 and has an estimated residual /... A piece of construction equipment is purchased for$ 110,000 and has an estimated residual / salvage value of $10,000 at the end of a 7 year recovery period. Prepare a Depreciation Schedule using: A. Straight-Line Method B. Sum-of-the-Years Method C. 200% Declining Balance Method ****please use ... 1 answer ##### CHW 2: Ch 204-7 6of 10> elactrodes, assume that value of 3 x 10 N/C of... CHW 2: Ch 204-7 6of 10> elactrodes, assume that value of 3 x 10 N/C of the field causes a spark Units... 1 answer ##### Sometimes a single-stranded molecule of RNA is able to fold back on itself because the nucleotide... Sometimes a single-stranded molecule of RNA is able to fold back on itself because the nucleotide sequence on one part of the RNA is complementary to another part. This sequence motif directly results in a: Group of answer choices transcription factor binding site RNA polymerase hairpin-shaped struc... 1 answer ##### Write formulas for the following compound lithium phosphate Write formulas for the following compounds. (Type your... Write formulas for the following compound lithium phosphate Write formulas for the following compounds. (Type your a. (a) lithium phosphate LI304P (b) magnesium hydrogen sulfate Mg(HSO4)2 (c) manganese(II) nitrate Mn(NO3)2 (d) chromium(III) sulfate Cr2(SO4)3... 1 answer ##### Linux and Sys administrator The ________ is a newer and more capable version of the DTD Linux and Sys administrator The ________ is a newer and more capable version of the DTD... 1 answer ##### Prove that if an integer n is not divisible by 3, then n^2=3k+1 for some integer... Prove that if an integer n is not divisible by 3, then n^2=3k+1 for some integer k. Note: “not divisible by 3” means either “n=3m+1 for some integer m” or “n=3m+2 for some integer m”.... 1 answer ##### QUESTION: Mr. Goemin has just been hired to compute the cost of capital of debt, bonds,... QUESTION: Mr. Goemin has just been hired to compute the cost of capital of debt, bonds, preference shares and ordinary shares for LCDLtd. • Because LCD’s short term and long term debts do not trade very frequently, Mr. G has decided to use 11% as cost of debt, which is the yield to matur... 1 answer ##### An orifice meter with a 2 inch diameter opening is used to measure the flow rate... An orifice meter with a 2 inch diameter opening is used to measure the flow rate of water through a horizontal 3 inch diameter pipe. A mercury manometer is used to measure the pressure difference across the orifice. If the differential height of the manometer is 7 inches, determine the volumetric fl... 1 answer ##### Problem 5: Draw the reaction products for the two schemes shown below. 0 (1) N cat.H*... Problem 5: Draw the reaction products for the two schemes shown below. 0 (1) N cat.H* (2) CH3CHBr (3) H,09 (1) LDA, dry THF (2) 2 equiv. CH3CH2Br Q27 (1) (CH3CH2CH2),Culi (2) CHgi (1) CH3LI (2) H30* Q29 Q30 (1) NaOET, -78 degC 0 0 (2) then heat Q31... 1 answer ##### A. What is the future value of 20 periodic payments of$4,720 each made at the...
a. What is the future value of 20 periodic payments of $4,720 each made at the beginning of each period and compounded at 8%? b. Robert Finley wishes to become a millionaire. His money market fund has a balance of$111,780 and has a guaranteed interest rate of 10%. How many years must Robert leave t...