A water heater can generate 32,000 kJ/h. How much water can it heat from 12°C to 42°C per hour?
The amount of water that is heated by a water heater.
Answer to Problem 7P
Solution:
The amount of water that is heated by a water heater is 254 kg.
Explanation of Solution
Given:
Formula Used: The formula used is the relation between temperature and specific heat from thermodynamics.
Where,
Calculation:
The power is 32000 kJ/h.
The energy delivered per hour must be 32000 kJ or 32,000,000 J.
This energy will raise the temperature of water of mass
Inserting the given values in the heat capacity formula:
Conclusion:
254 kg of water is heated per hour.
Chapter 14 Solutions
Physics: Principles with Applications
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