# Physics

Spent steam from an electric generating plant leaves the turbines at 120.0 degrees Celsius and is cooled to 90.0 degrees Celsuius liquid water by water from a cooling tower in a heat exchanger. How much heat is removed by the cooling tower water for each kilogram of spent steam?

q1 = heat removed by moving steam from 120.0 degrees C to steam @ 100.0 degrees C.
q1 = mass x specific steam steam x (Tf-Ti).

q2 = heat removed by condensing steam @ 100.0 degrees C to liquid water at 100.0 degrees C.
q2 = mass x heat of condensation (same as heat of vaporization but different sign).

q3 = heat removed by moving liquid water from 100.0 degrees C to 90.0 degrees C.

Total heat removed is q1 + q2 + q3.
The problem doesn't exactly specify a mass but it asks for heat per kg so I would use 1 kg or 1000g for mass in each of the above equations.

1. 👍 0
2. 👎 0
3. 👁 437

## Similar Questions

1. ### science

Spent steam from an electric generating plant leaves the turbines at 120.0 degrees celsius and is cooled to 90 degrees celsius liquid water by water from a cooling tower in a heat exchanger. How much heat is removed by the cooling

asked by yolanda on April 8, 2011
2. ### phusical science

spent steam from a electric generating plant leaves the turbines at 120 degrees celcius and is cooled to 90 degrees celcius liquid water by water from a heat exchanger. how much heat is removed by the cooling tower water for each

asked by Anonymous on October 5, 2010
3. ### science

spent steam from an electric generating plant leaves the turbines at 120.0 C and is cooled to 90. 0 C liquid water by water from a cooling tower in a heat exchanger. How much heat is removed by the cooling tower water for each kg

asked by doug on October 13, 2011
4. ### Physics 20

1. How much heat energy is required to change 500 grams of water at 100 degrees Celsius to steam at 100 degrees Celsius? 2. How much energy is lost if 7kg of water is cooled from 46 degrees Celsius to 2 degrees Celsius? 3. How

asked by Tamai on June 8, 2014
5. ### Physics

Please Help! I am having difficulties grasping these concepts. Explain please! 1. How much heat energy is required to change 500 grams of water at 100 degrees Celsius to steam at 100 degrees Celsius? 2. How much energy is lost if

asked by Tamai on June 8, 2014
6. ### science

A group of wind turbines operates in an open field. Which statement about the wind turbines is true? Answer A. The wind turbines produce movement of air that does work. B. The wind turbines do work by using electricity to produce

asked by Anonymous on April 30, 2013
7. ### chemistry

Given that the specific heat capacities of ice and steam are 2.06 J/g degrees celsius and 2.03 J/g degrees celsius, respectively, and considering the information about water given, calculate the total quantity of heat evolved when

asked by Anonymous on April 16, 2012
8. ### Chemistry

Given that the specific heat capacities of ice and steam are 2.06 J/g degrees celsius, respectively, and considering the information about water given in exercise 16, calculate the total quantity of heat evolved when 10.0g of

asked by Rachael on April 16, 2012
9. ### physics

A Norwegian hydroelectric power plant is built on a small river. The water falls 400m from the mountains to the turbines. The flow is 80 m3/s. Calculate: a) the produced electric power; b) the value of production of one day (unit

asked by winget on September 30, 2010
10. ### science

A copper calorimeter weighs 100g when empty, 400g when half full of water at 0 degrees Celsius, and 450g when ice at 0 degree Celsius is added. When some steam is passed into the mixture, its temperature is raised by 10 degrees

asked by agajere on February 3, 2017

More Similar Questions