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- Hot water at a flow rate of 0.7 kg/s at 70ºC and cold water at a temperature of 25ºC at a flow rate of 0.9 kg/s are mixed in a continuous flow mixing chamber. What is the enthalpy of the mixture? The pressure is 250 kPa at each point. Heat exchange with the environment will be neglected.    a) 187.2 kJ/kg  B) 173.6 kJ/kg  NS) 299.5 kJ/kg  D) 243.0 kJ/kg  TO) 182.5 kJ/kg

- Hot water at a flow rate of 0.7 kg/s at 70ºC and cold water at a temperature of 25ºC at a flow rate of 0.9 kg/s are mixed in a continuous flow mixing chamber. What is the enthalpy of the mixture? The pressure is 250 kPa at each point. Heat exchange with the environment will be neglected.    a) 187.2 kJ/kg  B) 173.6 kJ/kg  NS) 299.5 kJ/kg  D) 243.0 kJ/kg  TO) 182.5 kJ/kg

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Hot water at a flow rate of 0.7 kg/s at 70ºC and cold water at a temperature of 25ºC at a flow rate of 0.9 kg/s are mixed in a continuous flow mixing chamber. What is the enthalpy of the mixture? The pressure is 250 kPa at each point. Heat exchange with the environment will be neglected.

  
 a)

187.2 kJ/kg
 B)

173.6 kJ/kg
 NS)

299.5 kJ/kg
 D)

243.0 kJ/kg
 TO)

182.5 kJ/kg
Expert Solution
Step 1

Option A is the answer. 

We have to use compressed liquid water properties table. If not available you can refer saturated water properties table and 

h1 can be found at 70 oC as hf value. 

h2 can be found at 25 oC as hf value. 

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