An inventor claims to have developed a refrigerator that at steady state requires a net power input of 1.1 horsepower to remove 12,000 Btu/h of energy by heat transfer from the freezer compartment at -30°F and discharge energy by heat transfer to a kitchen at 70°F.Evaluate this claim. This claim isa) impossibleb) possible

Question
Asked Nov 19, 2019
45 views

An inventor claims to have developed a refrigerator that at steady state requires a net power input of 1.1 horsepower to remove 12,000 Btu/h of energy by heat transfer from the freezer compartment at -30°F and discharge energy by heat transfer to a kitchen at 70°F.

Evaluate this claim.

 

This claim is

a) impossible

b) possible

check_circle

Expert Answer

Step 1

The net power input is 1.1 horsepower. Thus,

help_outline

Image Transcriptionclose

745.7 W W 1.1 Hp) 1 Нр 820.27 W

fullscreen
Step 2

The energy removed by heat transfer from the freezer compartment is 12000 Btu/h. Thus,

help_outline

Image Transcriptionclose

0.29307 W Q12000 Btu/h 1 Btu/h 3516.8 W

fullscreen
Step 3

The freezer temperature is the ...

help_outline

Image Transcriptionclose

T -30 °F =-34.444 °C+273.15 K -238.706 K

fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Engineering

Mechanical Engineering

Thermodynamics

Related Mechanical Engineering Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: Match each of the following terms to the phrase that describes it. Answers are used only once.

A: Datum is the surface or axis from which measurements can be taken.

question_answer

Q: I need problems 1, 2, and 3 solved pertaining to the print provided below.

A: Answer to Question no. 1Datum A is a datum axis.Datum B is a datum center plane.Datum C is a datum c...

question_answer

Q: I need part 10 answered pertaining to the print provided.

A: 10.Refer to the Hex Flange Screw drawing. The ASME standard referenced for drawing interpretation is...

question_answer

Q: Two blocks A and B, each having a mass of 3.5 kg , are connected by the linkage shown. Neglect the w...

A: Consider Block A. Applying the equilibrium conditions, we get:

question_answer

Q: Determine the support reactions of roller A and the smooth collar B on the rod. The collar is fixed ...

A: Consider the free body diagram of the system.RA is the reaction at B and RB and MB are the reactions...

question_answer

Q: consider the beam shown in. EI is constant. assume that EI is in kip * ft2. determine the expression...

A: The free body diagram of the beam is given as the

question_answer

Q: The beam shown in (Figure 1) weighs 320 lb/ft . Determine the magnitude of the internal normal force...

A: Given data:The weight of the beam per unit length, W = 320 lb/ft.

question_answer

Q: The figure below shows a turbine-driven pump that provides water to a mixing chamber located dz⁢= 5 ...

A: Click to see the answer

question_answer

Q: The internal pressure acting on the closed ends of a cyclinder causes a stress known as  a. Hoop str...

A: Hoop stress/Tangential stress:It is defined as the force acting perpendicular to each point of circu...