Question

Refrigeration and AC What is the relation between u and k and what is the significance...

Refrigeration and AC
What is the relation between u and k and what is the significance of each on the heat transfer rate?
Engineering   Mechanical-Engineering   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
What is the relation between level of significance and level of confidence?
What is the relation between level of significance and level of confidence?
A vapor-compression refrigeration cycle operates at steady state with Refrigerant 134a as the working fluid. Saturated...
A vapor-compression refrigeration cycle operates at steady state with Refrigerant 134a as the working fluid. Saturated vapor enters the compressor at 2 bar, and saturated liquid exits the condenser at 8 bar. The isentropic compressor efficiency is 80%. The mass flow rate of refrigerant is 7 kg/min. Determine: (a) the compressor power, in kW, (b) the refrigeration capacity, in tons, (1 ton = 3.5168 kW) and, (c) the coefficient of performance, (d) rate of entropy production in kW/K, for the...
A heat exchanger uses saturated steam at 375 K to heat cold water entering at 280...
A heat exchanger uses saturated steam at 375 K to heat cold water entering at 280 K and leaving at 301 K only the latent heat of vaporization is removed from the steam. i.e. the steam is condensed and saturated water exit the exchanger. a) what is the LMTD for a counter current heat exchanger? b) what is the LMTD for a parallel or cocurrent heat exchanger? c) if the counter current heat exchanger has a duty (Q) of 81000...
Air is cooled from 300 K to 273 K as it flows steadily through a duct....
Air is cooled from 300 K to 273 K as it flows steadily through a duct. Frictional dissipation may be neglected. Cooling is achieved by removing heat via a heat pump. The work requirement is 1.15 times that of a reversible heat pump operating between 263 and 310 K. For each mole of air flowing through the duct, calculate: Air can be assumed an ideal gas with a constant heat capacity cP of 3.50R. The temperature of the surroundings is...
A heat exchanger uses saturated steam at 375 K to heat cold water entering at 280...
A heat exchanger uses saturated steam at 375 K to heat cold water entering at 280 K and leaving at 301 K. Only the latent heat of vaporization is removed from the steam, i.e. the steam is condensed and saturated water exits the exchanger. (a) What is the LMTD for a counter-current heat exchanger? (b) What is it for a parallel heat exchanger (c) If the counter-crrent heat exchanger has a duty(Q) of 81000 kJ/hour and an overall heat transfer...
Establish a relation between K and Kc for the reaction 3N2(g) + H2(g) ----> 2NH3(g)
Establish a relation between K and Kc for the reaction 3N2(g) + H2(g) ----> 2NH3(g)
1- what is the difference between DC and AC? 2- Why saudi compang uses AC?
1- what is the difference between DC and AC? 2- Why saudi compang uses AC?
Establish the relation between K and Kc for the reaction 3N2(g) + H2(g) ⇌ 2HN3(g). Assume...
Establish the relation between K and Kc for the reaction 3N2(g) + H2(g) ⇌ 2HN3(g). Assume gases are perfect
Newton's law of cooling is: du/dt = -k (u-T) where u(t) is temperature of an object,...
Newton's law of cooling is: du/dt = -k (u-T) where u(t) is temperature of an object, t is in hours, T is a constant ambient temperature, and k is a positive constant. Suppose a building loses heat in accordance with Newton's law of cooling. Suppose that the rate constant k has the value 0.15 hr^-1 . Assume that the interior temperature is Ti = 77F, when the heating system fails. If the external temperature is T = 5F, how long...
A two-stage cascade refrigeration system is shown below. The refrigerant is R134a. It consists of two...
A two-stage cascade refrigeration system is shown below. The refrigerant is R134a. It consists of two ideal vapor-compression cycles with heat exchange between the condenser of the lowertemperature cycle and the evaporator of the higher-temperature cycle. The hotter cycle operates between 0.7 MPa and 0.35 MPa, while the cooler cycle operates between 0.35 MPa and 0.12 MPa. If the flow rate in the hotter cycle is 0.5 mol/s, determine the following: What is the flow rate in the cooler cycle?...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT