Calculate Mass Flow rate of cooling water through condenser?

In summary, the mass flow rate of cooling water through a condenser can be calculated by dividing the heat transfer rate by the specific heat capacity of the water and the temperature difference between the inlet and outlet of the condenser. The formula for calculating the mass flow rate is ṁ = Q / (cΔT), where ṁ is the mass flow rate, Q is the heat transfer rate, c is the specific heat capacity of water, and ΔT is the temperature difference between the inlet and outlet of the condenser. The heat transfer rate (Q) should be in watts (W), the specific heat capacity (c) should be in joules per kilogram Kelvin (J/kgK), and the temperature difference (
  • #1
Spencer1
2
0
This is a homework problem that was posted in another forum, so there is no template
I have a condenser with a mass flow rate of 60kg/s,

an initial point 1: P=50kPa, Quality = 95% and

a final point 2: P = 50kPa that is saturated liquid.

cooling water flows through the condenser with a mass flow rate of m(dot) and has a delta temperature of 15 degrees Celsius.

how do i calculate m(dot)?
 
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  • #2
Is this a homework problem?

Chet
 
  • #3
yes
 
  • #4
I assume the fluid being cooled is steam? What is the open system version of the first law of thermodynamics applicable to the steam being cooled from beginning to exit of the condenser?

Chet
 

1. How do you calculate the mass flow rate of cooling water through a condenser?

The mass flow rate of cooling water through a condenser can be calculated by dividing the heat transfer rate by the specific heat capacity of the water and the temperature difference between the inlet and outlet of the condenser.

2. What is the formula for calculating the mass flow rate of cooling water through a condenser?

The formula for calculating the mass flow rate of cooling water through a condenser is: ṁ = Q / (cΔT), where ṁ is the mass flow rate, Q is the heat transfer rate, c is the specific heat capacity of water, and ΔT is the temperature difference between the inlet and outlet of the condenser.

3. What units should be used for the variables in the mass flow rate formula?

The heat transfer rate (Q) should be in watts (W), the specific heat capacity (c) should be in joules per kilogram Kelvin (J/kgK), and the temperature difference (ΔT) should be in Kelvin (K).

4. How does the mass flow rate of cooling water affect the efficiency of a condenser?

The mass flow rate of cooling water has a direct impact on the efficiency of a condenser. A higher mass flow rate can increase the heat transfer rate and improve the condenser's efficiency, while a lower mass flow rate can decrease efficiency and may lead to overheating.

5. Are there any other factors that can affect the mass flow rate of cooling water through a condenser?

Yes, there are several other factors that can affect the mass flow rate of cooling water through a condenser, such as the size and design of the condenser, the type and condition of the cooling water system, and the temperature and pressure of the environment in which the condenser is operating.

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