1. Ammonia passes through a throttling valve operating at ...

Transcribed Text

1. Ammonia passes through a throttling valve operating at steady state. The flow at the valve inlet has a pressure of 60 lbf/in² and a temperature of 80° F. The flow at the valve outlet has a pressure of 20 lbf/in². Determine the temperature at the valve outlet in °F. Assume the valve is well insulated and neglect kinetic and potential energy changes. 2. Refrigerant 134a passes through a pump operating at steady state which draws the refrigerant up a vertical pipe. The flow at the pump inlet has a pressure of 30 bar and a temperature of 20° C. The flow at the pipe outlet has a pressure of 30 bar and a temperature of 28° C. The pump supplies a specific work of 12 kJ/kg to the flow. Determine the height of the pipe outlet relative to the pump inlet in m. Assume the pump is well insulated and neglect kinetic energy changes. 3. Air passes through a jet engine nozzle operating at steady state. The flow at the nozzle inlet has a temperature of 900° F. The nozzle inlet has an area of 5 ft². The flow at the nozzle outlet has a temperature of 875° F, a specific volume of 90 ft³/lb, and a velocity of 600 ft/s. The nozzle outlet has an area of 2 ft². Model the air as an ideal gas with constant specific heats. Evaluate the specific heats at 900° F. Assume the nozzle is well insulated and neglect potential energy changes. Determine the velocity in ft/s and specific volume in ft³/lb of the flow at the inlet. 4. Water passes through a turbine operating at steady state. The flow at the turbine inlet has a pressure of 25 bar and a temperature of 400° C. The flow at the turbine outlet has a pressure of 5 bar. The mass flow rate through the turbine is 20 kg/s. While passing through the turbine, the water undergoes a polytropic process with n=1.2. Determine the power produced by the turbine in MW. Assume the turbine is well insulated and neglect kinetic and potential energy changes. 5. Propane passes through a diffuser operating at steady state. The flow at the diffuser inlet has a temperature of 120° F, a pressure of 20 lbf/in², and a velocity of 750 ft/s. The flow at the diffuser outlet has a pressure of 20 lbf/in² and negligible velocity. Determine the temperature of the flow at the diffuser outlet. Assume the diffuser is well insulated and neglect potential energy changes.

Solution Preview

These solutions may offer step-by-step problem-solving explanations or good writing examples that include modern styles of formatting and construction of bibliographies out of text citations and references. Students may use these solutions for personal skill-building and practice. Unethical use is strictly forbidden.

By purchasing this solution you'll be able to access the following files:
Solution.pdf.

\$63.00
for this solution

PayPal, G Pay, ApplePay, Amazon Pay, and all major credit cards accepted.

Find A Tutor

View available Thermodynamics Tutors

Get College Homework Help.

Are you sure you don't want to upload any files?

Fast tutor response requires as much info as possible.

We couldn't find that subject.
Please select the best match from the list below.

We'll send you an email right away. If it's not in your inbox, check your spam folder.

• 1
• 2
• 3
Live Chats