Question

In: Mechanical Engineering

3.) Product with Cp = 0.75 Btu/lb°F is flowing at a rate of 3300 lb/h and...

3.) Product with Cp = 0.75 Btu/lb°F is flowing at a rate of 3300 lb/h and has to be cooled from 221°F to 160°F. ? Cooling water at 60°F at a mass flow rate of 10,000 lb/h is used. ? The overall U of the heat exchanger is 115 Btu/h ft2 °F. Calculate the outlet water temperature (will be the same for both) ____________________ and the heat exchanger area for: A co-current flow shell-and-tube heat exchanger. ____________________ A counter-current flow shell-and-tube heat exchanger. __________________

Solutions

Expert Solution


Related Solutions

Water flowing at a rate of 0.667 kg/s (Cp = 4.192 kJ/kg. K) enters a counter...
Water flowing at a rate of 0.667 kg/s (Cp = 4.192 kJ/kg. K) enters a counter current heat exchanger at 318 K and is heated by an oil stream entering at 393 K at a rate of 2.85 kg/s (Cp=1.89 kJ/kg. K). The overall U=290 W/m2. K and the area A=20 m2. Calculate the heat transfer rate and the exit water temperature.
A stream of water vapor flowing at a rate of 452 mol/h is brought from 700.0...
A stream of water vapor flowing at a rate of 452 mol/h is brought from 700.0 °C and 10 bar to 400.0 °C and 1 atm. Using Steam Tables, Estimate the required cooling rate (in kW). Use five significant figures in your calculations.
A stream of air (21mole% O2, the rest N2) flowing at a rate of 30 kg/h...
A stream of air (21mole% O2, the rest N2) flowing at a rate of 30 kg/h is mixed with a stream of CO2. The CO2 enters the mixer at a rate of 23.6 m3/h at 200 oC and 1.5 bar. What is the mole % of CO2 in the product gas? a) Calculate the number of kg. moles of air flowing b) Calculate the number of kg. moles of CO2 c) Calculate the mole percent of CO2 in the mixture?
For which of the following reactions is ?H?rxn equal to ?H?f of the product(s)? You do...
For which of the following reactions is ?H?rxn equal to ?H?f of the product(s)? You do not need to look up any values to answer this question. Check all that apply. SO(g)+12O2(g)?SO2(g) 2Na(s)+F2(g)?2NaF(s) Na(s)+12F2(g)?NaF(s) S(s)+O2(g)?SO2(g) Na(s)+12F2(l)?NaF(s) SO3(g)?12O2(g)+SO2(g)
S = $/£0.75; 1-year bond rate in UK= 5%; 1-year F = $/£0.77; 1-year bond rate...
S = $/£0.75; 1-year bond rate in UK= 5%; 1-year F = $/£0.77; 1-year bond rate US= 2% a. Calculate the return on $1 invested in the UK. Where will global investors choose to invest? b. Find the Spot rate that makes the return on investments equal across these two countries?
The Edward H. & Wael F. (E & W) firm currently sells its product with a...
The Edward H. & Wael F. (E & W) firm currently sells its product with a 2% discount to customers who pay by cash or credit card when they purchase one of the firm’s products; otherwise, the full price is due within 30 days. Sixty percent of customers take advantage of the discount. The firm plans to drop the discount so the new terms will simply be net 30. In doing so, it expects to sell 150 fewer units per...
3. a) Using only the following information:    • ∆H°f for NO (g) is +90.4 kJ/mol    •...
3. a) Using only the following information:    • ∆H°f for NO (g) is +90.4 kJ/mol    • ∆H° = –56.6 kJ/mol for the reaction: NO (g) + 1/2 O2 (g) à  NO2 (g)   Determine ∆H°f for NO2 (g). b) Using only your answer to (a) and the following information:     •∆H° = –283.0 kJ/mol for the reaction: CO (g) + 1/2 O2 (g) à  CO2 (g)  Determine ∆H° for the reaction:   4 CO (g) + 2 NO2 (g) à  4 CO2 (g) + N2 (g) c)...
Explain each concept and give examples? (f) progressive (g) average tax rate (h) marginal tax rate...
Explain each concept and give examples? (f) progressive (g) average tax rate (h) marginal tax rate (i) public choice theory (k) government expenditures (l) rational ignorance
consider the air flowing over a flat plate of length L=1m. air's propertis Density=1Kg/m^3 Cp=1000j/Kg*K viscosity=10^-5Kg/m*s...
consider the air flowing over a flat plate of length L=1m. air's propertis Density=1Kg/m^3 Cp=1000j/Kg*K viscosity=10^-5Kg/m*s k=0.1W/m*C If length is 0.5m, heat flux = 3000W/m^2 average heat flux =4500W/m^2 the plate temperature 20 degrees (a) whay is flow?(Laminar or Turburlent of mixed) (b) what is the possible range Air velocity? (c) relationship Temperature air and Velocity air
1)For the function f(x)=6x^2−2x, evaluate and simplify. f(x+h)−f(x)/h 2)Evaluate the limit: limx→−6 if x^2+5x−6/x+6 3)A bacteria...
1)For the function f(x)=6x^2−2x, evaluate and simplify. f(x+h)−f(x)/h 2)Evaluate the limit: limx→−6 if x^2+5x−6/x+6 3)A bacteria culture starts with 820820 bacteria and grows at a rate proportional to its size. After 22 hours there will be 16401640 bacteria. (a) Express the population PP after tt hours as a function of tt. Be sure to keep at least 4 significant figures on the growth rate. P(t)P(t)= (b) What will be the population after 8 hours? bacteria (c) How long will it...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT