How would you formulate this problem to obtain a more meaningful result which desired to cool a gas has [Cp 0.35 Btu/(Ib)(°F)] from 190 to 95°F, using cooling water at 83°F. Water costs $0.30/1100 ft', and the annual fixed charges for the exchanger are $0.60/ft of inside surface, with a diameter of 0.0775 ft. The heat transfer coefficient is U= 8 Btu/(h)(ft)(F) for a gas rate of 2900 Ib/hr. Plot the annual cost of cooling water and fixed charges for the exchanger as a function of the outlet water temperature. What is the minimum total cost?

How would you formulate this problem to obtain a more meaningful result which desired to cool a gas has [Cp 0.35 Btu/(Ib)(°F)] from 190 to 95°F, using cooling water at 83°F. Water costs $0.30/1100 ft', and the annual fixed charges for the exchanger are $0.60/ft of inside surface, with a diameter of 0.0775 ft. The heat transfer coefficient is U= 8 Btu/(h)(ft)(F) for a gas rate of 2900 Ib/hr. Plot the annual cost of cooling water and fixed charges for the exchanger as a function of the outlet water temperature. What is the minimum total cost?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Related questions

Q: Q5) Consider the heat transfer through an extended surface (a fin). Find temperature distributions…

Q: s indicated in the table given in App

Q: МЕСН 2344 QUIZ 3 Buring steady-state operation, a gearbox receives 60 kw through the input shaft and…

A: Given data: Heat received by the gear box = 60 kW Heat transfer coefficient = 170 W/m2.K Outside…

Q: A coolant is transported in a pipe with external wall temperature of -30 °C and with outer diameter…

A: Given:The temperature of an external wall of the pipe is the diameter of the pipe is the thermal…

Q: Estimate the heat exchanger area needed to cool 55,000 lb/hr of a light oil (specific heat = 0.74…

A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: 15. Saturated steam at 500°K flows in a 0.20 m inside diameter, 0.21 m outside diameter pipe. The…

Q: In fabrication process, steel components are formed hot and then quenched in water. Consider 2 m…

A: The Biot number can be calculated as, Since the value of the Biot number is more than 0.1, the…

Q: A house, for cooling purposes, consists of two zones: the attic area zone A and the living area zone…

A: Solution: Given Data: K1 = 1/4 K2 = 1/8

Q: A vegetable soup, with specific heat capacity 4000 J/(kg. K), is being heated from 21 to 97 °C…

A: Given:For vegetable soup:For steam:The overall heat transfer coefficient = To find:The rate of heat…

Q: can be modeled as a cir one end of the duct pus ure of 105 kPa, temperat ere is a heating element C…

Q: Q2) Derive an equation for the temperature profile in the wall and calculate the temperature at the…

Q: Table 3(a): Heater Power Q = 20 Watts Air Velocity (m/s) 0 1.0 2.0 3.0 Plate temperature, TH (°C)…

A: Given:

Q: = How long should it take to boil an egg? Model the egg as a sphere with radius of 2.3 cm that has…

Q: Saturated steam at 3 atm will flow through a 3 in. Schedule 80 steel pipe. In order to decrease the…

A: The outer surrounding temperature is To=20°C The radius of the pipe is r1=32 in=3.81 cm. The thermal…

Q: A Zamboni is a multi-step mechanical ice rink resurfacer. The first step is shaving the ice surface…

Q: Air surrounding a light bulb is moving at 25 m/sec. The surrounding conditions are kept at…

A: For forced convective heat transfer across a sphere we use the Whittaker correlation Nu¯=h¯Dk=2+ 0.4…

Q: Problem 1.6 A heat exchanger is being designed as a component of a geothermal power system in which…

Q: Task 2.1: In a horizontal water pipe (length L=10 m) inner radius r; = 1.25 cm), water flows with an…

A: Given:The length of the pipe, The inner radius of the pipe, The diameter of the pipe, The inlet…

Q: Water 17°C 1,8 kg/s 120°C Steam 120°C 1 80°C

Q: Use the alternative conduction analysis of Section 3.2 to derive an expression relating the radial…

A: Step 1:

Question

How would you formulate this problem to obtain a more meaningful result which desired to cool a gas has
[Cp = 0.35 Btu/(Ib)(°F)] from 190 to 95°F, using cooling water at 83°F. Water costs $0.30/1100 f, and
the annual fixed charges for the exchanger are $0.60/ft of inside surface, with a diameter of 0.0775 ft.
The heat transfer coefficient is U = 8 Btu/(h)(f)(F) for a gas rate of 2900 Ib/hr. Plot the annual cost of
cooling water and fixed charges for the exchanger as a function of the outlet water temperature. What is
the minimum total cost?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

only part 1d)
Q2/ An aluminum sphere weighting 7kg and initially at a temperature of 533K is suddenly immersed in a fluid at 283K. if heat transfer coefficient between the sphere and fluid is 50W/m?.°C. Take density=2707kg/m3, specific heat=0.9KJ/kg.ºC and thermal conductivity= 204W/m°C. Determine th Bi number and And determine the time required to cool sphere to 263k
I need the answer as soon as possible
A J- type thermocouple is used to measure the temperature in a heating process. Sheath material used is SS316. The length of the sheath is 13mm and thickness is 0.3mm. Find the time constant of the sheath. Material Q(kg/m3)s(J/Kg - °c)K(W/m-k) Platinum 21450 130 71.6 SS304 8030 500 21.4 SS316 7990 500 21.4 SS410 7750 460 24.9 Air 1.20 1005 0.025 MgO Powder 3580 877 26.8 Silicon compound3210 800 3 Time constant of the bare material is, T=
Due higher viscosity, the heat-transfer coefficient of moving liquid hydrocarbons is generally higher than that of moving water Select one: O True O False The proper strategy to enhance heat transfer of a heat exchanger is trying to increase the heat transfer coefficient of the side with the lower heat resistant. Select one: O True O False For the universal 3-D heat transfer equation (see topic 7 in URCourses notes), we have to simplify by eliminating terms that are zero or near zero first, and then we can only use numerical methods (such as finite difference) to solve those problems. Select one: O True O False
Solve with thermal resistance and conduction/convection. Specifically account for the V= 9 ft/s The wall of a furnace has an inner temperature of 500 F. The wall has a thickness of 2 inches and has a thermal conductivity of 0.02 Btu/(h·ft·F). On the outside, air at 30 F flows over the 10 ft x 10 ft wall at a speed of 9 ft/s. Determine the rate of heat loss from the furnace to the environment.
Q. Steam in a heating system flows through tubes whose outer diameter is 5 cm and whose walls are maintained at a temperature of 130 °C. Circular aluminum alloy 2024-T6 fins k = 186 W/m.K of outer diameter 6 cm and constant thickness 1 mm are attached to the tube. The space between the fins is 3 mm, and thus there are 250 fins per length of the tube. Heat is transferred to the surrounding air at 25 °C, with a heat transfer coefficient of 40W/m².K. Determine: 1. The increase in heat transfer from the tube per meter of its length as result of adding fins. 2. The efficiency of the fins. 3. Temperature at mid-point of the fins. Note: Equations and any other data required can be taken from textbook/handbook. 130°C 25°C
Answer this ASAP The diameter of the tube is 25 mm. The specific heat of water is 4.18 kJ/kg.°C. The overall heat transfer coefficient is 0.7 kW/m².°C. 1. Schematic of temperature distribution 2.ΔTLMTD 3.Actual heat transfer rate 4.Cmin 5.Maximum heat transfer rate
Hhhhhhhhh
A conductor with a diameter D= 0.8 cm, covered by an electric current, passes through an environment at T∞= 30 °C with convective heat transfer coefficient h= 120 W/(m² °C). The conductor temperature must be maintained at Ti= 130 °C. Calculate the rate of heat loss per meter of conductor length with:a) the uncoated conductor;b) the conductor covered with bakelite [k = 1.2 W/(m°C)] with a radius corresponding to the critical insulation radius.
pls ans quickly