subject
Engineering, 26.07.2019 20:20 mooneyhope24

What is the maximal coefficient of performance of a refrigerator which cools down 10 kg of water (and then ice) to -6c. upper heat source of this refrigerator is surroundings at constant temperature 21c. initially water is in equilibrium with surroundings. what is maximal coefficient of performance of heat pump operating in the same configuration. specific heat of water, specific heat of ice, and latent heat of fusion are equal to 4.19kj/kg/k, 2.1kj/kg/k and 335 kj/kg, respectively.

ansver
Answers: 3

Other questions on the subject: Engineering

image
Engineering, 04.07.2019 18:10, mamasbug4285
An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0
Answers: 3
image
Engineering, 04.07.2019 19:10, nbunny7208
What is the chief metrological difference between measuring with a microscope and with an electronic comparator? a. the microscope is limited to small workpieces. a. the microscope is limited to small workpieces. c. the comparator can only examine one point on the workpiece. d. the microscope carries its own standard.
Answers: 1
image
Engineering, 04.07.2019 19:10, 592400014353
For a process taking place in a closed system containing gas, the volume and pressure relationship is pvi-constant. -1.5 bar, the process starts with initial conditions, pi = =0.03 m3 and ends with final volume, v2-0.05 m3 determine the work done by the gas.
Answers: 2
image
Engineering, 04.07.2019 19:20, praveen35301
Amass-spring-viscous damper system of mass 3 kg has a frequency of 100 rad/s and is critically damped. its initial conditions are x(0)-3 mm and (0)-2.3 m/s. does the system overshoot its equilibrium position? prove your answer
Answers: 1
You know the right answer?
What is the maximal coefficient of performance of a refrigerator which cools down 10 kg of water (an...

Questions in other subjects:

Konu
Mathematics, 27.01.2021 09:50
Konu
Mathematics, 27.01.2021 09:50
Konu
History, 27.01.2021 09:50
Konu
Mathematics, 27.01.2021 09:50