What is the rate of cooling for the refrigerator

Assignment Help Civil Engineering
Reference no: EM13546923

1.Some skin divers go as deep as 50m. What is the gage pressure at this depth in fresh water, and what is the ratio of the absolute pressure at this depth to normal atmospheric pressure? assume T=20 degreescelcius

2.Calculate the rate of entropy change for each component of a refrigerator that uses 10 kW power, rejects 14 kW heat and has a high temperature reservoir at 400 K and a low temperature reservoir at 200 K.

a. What is the rate of cooling for the refrigerator?

b. Is the refrigerator completely reversible? Explain.

Reference no: EM13546923

Questions Cloud

Nitrogen expands in a friction-less piston-cylinder device : Nitrogen expands in a friction-less piston-cylinder device from 0.10 to 0.30 m^3. The process is described by P= 7.4 - 40v + 60v^2 , where P is in bars and V is in cubic meters. Determine the work in kJ.
What is the final temperature of the water : A piston-cylinder device contains 2 kg saturated water vapor at 600 kPa. The water expands adiabatically until the final pressure is 100kPa. And 1,465 kJ work is produced.
Does the second law require that the decrease in entropy : An insulated system contains two solid blocks in contact with each other; one hot and the other cold. After heat transfer over some time,thermal equilibrium is established in the container.
What is the rate of entropygeneration assuming the surround : Steam expands in an turbine operating in steady-state conditions with a mass flow rate of 40,000 kg/hr. The steam enters the turbine at 8MPa and 500 C, and exits as a saturated vapor at 40 kPa. If the power generated by the turbine is 8.2 MW, what is..
What is the rate of cooling for the refrigerator : Some skin divers go as deep as 50m. What is the gage pressure at this depth in fresh water, and what is the ratio of the absolute pressure at this depth to normal atmospheric pressure? assume T=20 degrees celcius
Design a concrete column of 14 ft high to support a dead : Design a concrete column of 14 ft high to support a dead load of 80 kips and a live load of 200 kips? f'c= 6,000 psi fy= 60,000 psi
Calculate the required downpayment and monthly payments : Terry wants to purchase a used car for $8000. The dealer offered to finance the deal at 8.5% APR for 4 years with 10% down payment. Terry's bank will provide a loan at 7.8% for 3 years,
Requires you to compile an annotated bibliography : This assignment requires you to compile an Annotated Bibliography
Calculate the monthly loan payment to repay : It is not uncommon to borrow $100,000 or more to purchase a home. Banks typically offer 15-,20-, and 30- year loans. a) Calculate the monthly loan payment to repay a $100,000 home loan

Reviews

Write a Review

Civil Engineering Questions & Answers

  Determining tension in cables using crane hook

The casting has a mass of 3 Mg. Suspended in a vertical position and initially at rest, it is given an upward speed of V mm/s in 0.3s using a crane hook H. Determine the tension in cables AC and AB during this time interval if the acceleration is ..

  Determine the bod of biodegradable industrial wastewater

A biodegradable industrial wastewater (paper production) has a COD of 600 mg/ L. If the BOD progression follows first-order kinetics with a rate constant of 0.10 per day, determine the BOD5

  Determine whether the environmentalists case is justified

If the forest is considered to be negatively affected at levels exceeding 300 ?g m-3, use your knowledge of atmospheric transport to determine whether the environmentalists' case is justified.

  Derive the expression for the hydraulic radius rh of a pipe

A sprinkler system uses an outdoor reservoir at El 50. A fire pump moves Q = 3 ft^3/sec through a 1.0' dia pipe 300' long to an 8" dia main at El 200. To distribute water to sprinklers, a pressure head at the pipe junction hp =100' is required.

  Calculate the stoichiometric quantity of cl2 required

Aqueous sodium cyanide wastes at a metal processing industry are to be treated with chlorine and NaOH. Calculate the stoichiometric quantity of CL2 required daily to destroy the cyanide from 5 Kg of NaCN.

  Derive formulas to show that normal stresses in rods

Derive formulas to show that normal stresses in rods (1) and (2) are independent of the material used in rods, as long as they have the same modulus of elasticity, that is, E_1 = E_2.

  What amount of depreciation will you claim for each calender

What amount of depreciation will you claim for each calenderyear during the period 1972-1975?

  A developer has requested permission to build a large retail

A developer has requested permission to build a large retail store at a location adjacent to the intersection of an undivided four-lane major road and a two-lane minor road.

  Determine what is the total settlement under the footing

Consolidation test was conducted on the undisturbed clay sample, and one increment of loading data with time is presented in the following table. At "0" time, the sample height was 2.314 cm, and the void ratio was 0.7.

  What is the probability that gas and oil will be short

A community has three major sources of power supply: electricity, gas and oil. Let E, G and O denote events of shortages of each of these power sources, respectively. Their probabilities are estimated to be 0.15, 0.10 and 0.20 respectively.

  How long would lake take to reduce h2s concentration form

Lake silbersee is located in the German city of Nuernberg. The lak's water quality has been diminishedbecause of high hydrogen sulfide concentrations that originate froma nearby leaking landfill.

  Find the cumulative distribution function of the elongations

Elongation (in %) of steel plates treated with aluminium are random with probability density function

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd