Answered: Determine the power required providing…

Determine the power required providing 3 kw of colling at -10 degrees celcius while the surrounding air is at 24 degrees celcius.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter8: Natural Convection

Section: Chapter Questions

Problem 8.12P: 8.12 An electric room heater has been designed in the shape of a vertical cylinder 2 m tall and 30...

See similar textbooks

Related questions

Q: Determine the pressure of compressed air in an air vessel if the manometer mounted on it shows a…

Q: Air is contained inside a simple piston cylinder device as shown in the figure. It expands from…

Q: Where is the center of gravity (COG) of this three weight system located (in m) with respect to the…

Q: A sample of steam is at a pressure of 300 kPa (x=0.75). Solve for its entropy.

Q: A square thread has a pitch of 3 mm and a diameter of 15 mm. The coefficient of friction is 0.2.…

Q: A solenoid of length 50 cm has 240 turns of radius 2.4 cm. An outer coil with 16 turns of radius 5…

Q: 1 Velocities are measured at different locations using a data logger and the field is given by the…

Q: The rear window of an automobile is defogged by passing warm air over its inner surface. If the warm…

A: Given:Inner side warm air temperature, T∞,i=40oCThe inner side convection coefficient, hi=30…

Q: The steady-state temperature distribution in a one-dimensional wall of thermal conductivity k=83…

A: Given:Thermal conductivity of the wall, k=83 W/m.oCThickness of the wall, L=300 mm=0.3 mTemperature…

Q: Q3.8) A microphone operates on the principle of a diaphragm gage with a capacitance pickup. Suppose…

A: Maximum pressure fluctuation = 0.029 psi Diaphragm frequency = 10000 Hz Diameter of the diaphragm =…

Q: Determine the final measurements of the length and diameter of the following bar that is subjected…

Q: 1. Calculate the reactions. a) b) c) mim Pin Support Link Support 3m Fixed End Support Roller…

A: According to the given data We need to find the reaction at point-A

Q: Consider a point in a structural member that is subjected to plane stress. Normal and shear stresses…

Q: 03- A cross flow type air heater with both fluids unmixed has an area of (50) m²) and the overall…

Q: Find the total response of a single degree of freedom system with m= 10kg, c = 20Ns/m, k = 4000N/m,…

Q: 14 m/s A -2 m- B 1.5 m с h d D

Q: The dimensions of the section are: l=55 mm, h=22 mm The triangle: hT=12 mm, lT=19 mm and the 2…

A: Dimension of Rectangular block : (55mm,22 mm) Area of the rectangle : A1=55×22=1210mm2 Dimension…

Q: 1 Calculate the moment of the 250-N force on the handle of the monkey wrench about the center of the…

A: moment of a force about any pt. is calculated by multiplying the force with the perpendicular…

Q: Instructions: In this exercise, incomplete relationships are set up among fluid conductors and…

A: Here we have to complete the relationship among fluid conductors and connectors by choosing…

Q: Steam enters a turbine where it expands isentropically. The initial conditions are 3 MPa and 300C…

Q: The jet plane is flying upward such that its wings make an angle of attack of 15° with the…

Q: A hollow transmission shaft, having an inside diameter 0.6 times the outside diameter, is made of…

A: handwritten solution attached

Q: The stepped shaft shown rotates at 450 rpm. Knowing that r= 0.2 in. and using figure 3.28, determine…

A: According to the given data r=0.2in d=5in D=6in N=450rpm τ=7500 psi We need to find Largest…

Q: The three balls each weigh 0.4 lb and have a coefficient of restitution of e = 0.75. If ball A is…

A: The mass of each ball is 0.4 lb The coefficient of restitution is e=0.7.

Q: (Q1) Find the number of cycle required to increase the crack lengul (0.3 mm) to (0.4 mm). The…

Q: The exact expression for the local Nusselt number for laminar flow along a flat plate is given by:…

Q: If the shaft and plate rotate with a constant angular velocity of w = 14 rad/s 0.4 m B 0.4 m 0.6 m…

A: For constant angular velocity (ω), the angular acceleration (α=0) is zero. ω=14rad/s From figure:…

Q: 1.Calculate the 2nd moment of area for a beam with a length of 200 mm, a width of 20 mm and a height…

Q: A toy is dropped into a pool of water (g = 9.81, p = 10003). It is then submerged 3m. What is the…

Q: A system is composed of a stone having a mass of 10 kg and a bucket containing 100 kg of water.…

Q: Problem 07.093 - Point loads applied to a cable with level supports - DEPENDENT MULTI-PART PROBLEM -…

A: The forces are P1=2 kN, P2=4 kN, P3=6 kN The distance dc is 4 m.

Q: A sample of steam is at a pressure of 500 kPa (x=0.25). Solve for its enthalpy.

A: According to the given data P=500 KPa x=0.25 We need to find The Enthalpy of the steam.

Q: Determine the support reaction and draw the relationship between load, shear and moment diagram…

A: Given Data: Load B is in the middle of c and d. Load C is at b. To Find: (a) Support reactions.…

Q: Please match Heat-Treated Steels with their hardness HB numbers, according to the charts shown…

Q: Create an equation and explain how did you arrive at that equation.

A: According to the given data. A pulley system is given We need to find Equation of the system.

Q: In (Figure 1), ƒ(z) = 4 cos(2¹), a = 4 in., b = 6 in. igure y=f(x). 1 of 1 Part A Determine the…

Q: An assembly worker on a production line obtains an Allen key within reach, positions it 15 cm (6…

A: handwritten solution attached

Q: 3. Consider a frame as shown below. The vertical section AB is 3 m long, and the horizontal section…

A: Note: Complete solution will be provided soon Given data: Frame has hollow circular section frame…

Q: Q5/ A surface condenser handles condensate at 70.15 cm Hg when barometer reads 76 cm Hg. Steam…

A: Given DataPb=76 cm of hgm˙s=2360 kg/hrm˙w=6.81×102kg/hrPc=70.15cm of the HgIntial water…

Q: 6 m^3/min of 15.6°C SAE 30 is to be pumped from a tank through 40 meters of horizontal pipe; the oil…

A: Given:Volumetric flow rate of oil, Q=6 m3/min=660m3/s=0.1 m3/sOil temperature, T=15.6oCLength of the…

Q: Problem 2 Airplane A is flying as shown with speed is being increased at a rate of 12 m/s². Airplane…

A: velocity of A VA=400 kph velocity of B VB=500KPh acceleration of A aA=12 m/s2 tangential…

Q: PROBLEM 1 Find the support reactions and joint force of the construction, shown on the figure, if:…

A: As K is hingedp=12KNq=9 KN/mL=2mTaking M=9 Nm = 9×10-3 KNm

Q: Consider the compound beam shown in (Figure 1). Suppose that P1 = 950 N, P2 = 1500 N, w = 550 N/m,…

A: handwritten solution attached

Q: Take the mass of the block is M(kilogram=Newton-second2/meter), the spring constant is K…

A: Given Data: M=2 kgK=1 N/mfv=1 N-s/m To Find: Find the transfer functions for both the parts.

Q: A converging nozzle having an exit diameter of 30 mm is connected to the large tank (Figure 1). The…

Q: AC BC BD Figure of Question 2 Beam AC is subjected to a uniformly distributed load of w= 4.8 kN/m.…

A: length of AC=4m length of BC=1m so the length of AB=3m now udl w=4.8KN/m moment of inertia I=246…

Q: The 25-lb slender rod AB is attached to spring BC which has an unstretched length of 4 ft. If the…

Q: A stream of water (p= 1000 kg/m³) enters a steady- state flow diverter shown in the figure. The…

A: given a= 0.5 m b=1 m c=0.4m d=0.2m mass of the diverter M=60Kg density of water =1000kg/m3 cross…

Q: Superheated steam at 18 MPa, 560 °C enters the steam turbine. The pressure at the exit of the…

Q: For any arbitrary plane stress components, σx, σy and τ xz, the orientations of principle and…

A: This question is based on the concept of principal stress and Mohr's circle.

Question

Requires Solution:
Determine the power required providing 3 kw of colling at -10 degrees celcius while the surrounding air is at 24 degrees celcius.
Answer: 0.39 kW

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: Given data.

VIEW

Step 2: Calculations for power input to the compressor.

VIEW

Solution

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

8.12 An electric room heater has been designed in the shape of a vertical cylinder 2 m tall and 30 cm in diameter. For safety, the heater surface cannot exceed . If the room air is at , find the power rating of the heater in watts.
my answer here is -12.57 BTU/lb please take note the height difference
Skg of Steam at pressure of 4.9 bar is produ- ced from water at 20c. Determine the amount of heat supplied if the Steam is o.9 dy.
A dormitory room measures 4m x 6m x 6m. A student turns on a 150 watts fan before leaving the room on a summer day, hoping that the room will be cooler when she returns in the evening. Assume that all doors and windows are tightly closed, and there is no heat transfer through the walls and windows. At the start of the day, the room temperature is 15°C, and the pressure is 100 kPa. What will be the temperature inside the room when the student returns 10 hours later, given the specific heat value of air at room temperature?
A 10 gallons of water has an inital temperature of 25 degrees Celsius. What is the input power needed to raise the temperature up to the boiling point after 25 minutes Assume heat loss 12%
1. The flash point of an engine oil is 3630F. What is the absolute flash-point temperature in K and R is
Calculate the heat transfer of 2.4 kg of water to vapor
A sample of helium gas is contained in a cylinder fitted with a movable piston. Calculate the change in the internal energy of the helium if it absorbs 85 J of heat while it performs 33 J of work through expansion.
4. Gas is enclosed in a cylinder with a weighted piston as the top boundary. The gas is heated and expands from a volume of 0.04 to 10 m³ at constant pressure of 200 KPa. Calculate the work done by the system.
A 20-çm diameter sphere has a surface temperature of 500 K. The sphere is suspended in 300 K still air. Find the heat transfer from the sphere. Neglect radiation.
The work done when a gas is expanded to a cylinder is -199 J. A heat transfer of 270 J occurs from the surrounding to the gas. Calculate ΔE of the gas in Joules Topic: First Law of Thermodynamics
Jose is cooking sopas (chicken noodle soup) for Noche Buena. He finished early in the afternoon and wants to preserve it but the sopas is still too hot if it will be put directly on the refrigerator. The sopas has just boiled a hundred degree Celsius and the refrigerator wasn't powerful enough for the big container of the soup if it was warmer than 20 degrees Celsius. Jose found out that cooling it in a sink full of cold water, while the faucet is running with the water resulting to roughly constant temperature of 6 degrees Celsius, could bring the temperature of the sopas to 56 degrees Celsius in 8 minutes. Determine the value of the proportionality constant.