What is the heat-transfer rate from the compressor?
Carbon dioxide gas enters a water-cooled compressor at conditions 
= 1 bar and 
= 10°C, and is discharged at conditions 
= 36 bar and 
= 90°C. The entering 
flows through a 10-cm-diameter pipe with an average velocity of 10 
, and is discharged through a 3-cm-diameter pipe. The power supplied to the compressor is 
First, we need to determine the velocity of the discharge, 
To do this the mass flow rate must be determined by using 
Using this ?,
Now that 
has been determined
and converting 
by using 1 kJ/kg = 
you obtain Q = –127.064 kJ/mol. To get the heat transfer
rate,
Q? = Q ? ? = ?19053 kJ/s.
You might also like to view...
One feature of the American economy that strained the relationship between the colonies and Britain was the
A. British demand to halt the importation of slaves. B. growing desire of Americans to trade with other nations in addition to Britain. C. lack of any British regulations regarding trade with foreign nations. D. British rejection of the Molasses Act. E. the Americans' unwillingness to trade with the French West Indies.
Describe the components of a planetary gear set and what different speeds it can provide.
What will be an ideal response?
If running late, the wise technician should ________
A) Speed up B) Call the shop and take the day off C) Call the shop and let them know you will be late D) Stop and eat a good breakfast before going to the shop
When the electric motor is acting as a generator it produces alternating current (AC). This current is converted to direct current (DC) by use of ________
A) Large capacity filters B) Large diodes C) Special AC batteries D) None of these