The COP of vapor-compression refrigeration cycles improves when the refrigerant is sub cooled before it enters the

Question:

The COP of vapor-compression refrigeration cycles improves when the refrigerant is sub cooled before it enters the throttling valve. Can the refrigerant be sub cooled indefinitely to maximize this effect, or is there a lower limit? Explain.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Thermodynamics An Interactive Approach

ISBN: 978-0130351173

1st edition

Authors: Subrata Bhattacharjee

See More Books

Question Posted: Feb 17, 2010 04:38 AM

See More Questions

A certain refrigerant vapor enters an SSSF constant pressure condenser at 150 kPa, 70C, at a rate of 1.5 kg/s, and it exits as saturated liquid. Calculate the rate of heat transfer from the...
A certain refrigerant vapor enters a steady flow constant pressure condenser at 150 kPa, 70C, at a rate of 1.5 kg/s, and it exits as saturated liquid. Calculate the rate of heat transfer from the...
Refrigerant 134a enters an adiabatic compressor as a saturated vapor at 70F. It leaves the compressor at 160 psia and 120F. If the mass flow rate of the refrigerant is 10 lbm/s, determine the...
Hydrocarbon A has the formula C 9 H 12 and absorbs 3 equivalents of H 2 to yield R, C 9 H 18 , when hydrogenated over a Pd/C catalyst. On treatment of A with aqueous H 2 SO 4 in the presence of...
A local sandwich shop offers five different breads, four different meats, three different cheeses, and six different vegetables. A customer can choose one bread, one or no meat, one or no cheese, and...
Which of the four components of EQ do you consider most important to an effective manager in todays world? Why?
In each of the following situations, formulate the null and alternative hypotheses. a. A new product will be introduced if it is preferred by more than 70 percent of the consumers in the target...
The Foundation for Educational Excellence has decided to support the Tri-County School Districts series of teacher training workshops intended to improve instruction in mathematics. The foundation is...
Green Trifle Bakery discovered some errors for 2020 and 2021. What would be the impact on net income for each year if the errors were left undetected? Error Ending inventory in 2020 2020 2021 was...
Table 1 shows Apple's online orders for the last week. When shoppers place an online order, several "recommended products" (upsells) are shown as at checkout an attempt to upsell See table 2 in cell...
Consider two vapor-compression refrigeration cycles. The refrigerant enters the throttling valve as a saturated liquid at 30C in one cycle and as sub cooled liquid at 30C in the other one. The...
A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -30°C by rejecting its waste heat to cooling water that enters the condenser at...
What is the structure of ATCase?
Give expressions for \(\Delta u\) and \(\Delta h\) that are valid for perfect gases. Do these hold for any process?
For perfect gases, at what temperature do we arbitrarily assign \(u=0\) and \(h=0\) ?
Give the equations that define enthalpy and entropy.
What is the relation between degrees Fahrenheit and degrees Rankine? And the relation between degrees Celsius and Kelvin?
Why do we need an equation of state? Write down one with which you are familiar.
Differentiate between ferrous and non-ferrous materials.
2. Assume a person bends forward to lift a load "with his back" as shown in Figure P12.42a. The person's spine piv- ots mainly at the fifth lumbar vertebra, with the principal supporting force...
Balance each of the following equations, and classify them as precipitation, acidbase, gas-forming, or oxidationreduction reactions. Show states for reactants and products (s, , g, aq). (a) CuCl + HS...
Direction: Make an essay about festival dance, chose one from the given questions below. Write your answer in a separate sheet of paper. Processing questions: 1. Why is there a need for festivals?...
Stock A has an expected return of 0.1 and a standard deviation of 0.5. Stock B has an expected return of 0.2 and a standard deviation of 0.6. The correlation coefficient is 0.5. 1. What is the...
How might the self-fulfilling prophecy work in a positive sense? A negative sense? which is more common, and why? How can negative thoughts like this be realistically managed?

The COP of vapor-compression refrigeration cycles improves when the refrigerant is sub cooled before it enters the

Question:

Step by Step Answer:

The minimum temperature that the refrig...View the full answer

Thermodynamics An Interactive Approach

Students also viewed these Mechanical Engineering questions