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Energy Equation:
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The energy equation (E = m × c × ΔT) calculates the amount of energy required to change the temperature of a substance. For water systems, it helps determine the heating requirements based on mass, specific heat capacity, and desired temperature change.
The calculator uses the energy equation:
Where:
Explanation: The equation calculates the thermal energy needed to raise the temperature of a given mass of water by a specified amount.
Details: Accurate energy calculation is crucial for designing heating systems, estimating energy costs, and determining equipment requirements for water heating applications.
Tips: Enter mass in kg, specific heat capacity in J/kg°C (default is 4186 for water), and temperature change in °C. All values must be positive numbers.
Q1: Why is specific heat capacity important?
A: Specific heat capacity determines how much energy is needed to raise the temperature of a substance. Water has a relatively high specific heat capacity compared to other liquids.
Q2: What are typical values for water systems?
A: For water, the specific heat capacity is typically 4186 J/kg°C. The mass depends on your system volume (1 liter ≈ 1 kg).
Q3: How does temperature change affect energy requirements?
A: Energy requirements increase linearly with temperature difference. Heating water from 20°C to 30°C requires the same energy as from 70°C to 80°C for the same mass.
Q4: Can this be used for other liquids?
A: Yes, but you must use the correct specific heat capacity for the liquid in question. Different substances have different heat capacities.
Q5: How can I convert the result to kWh?
A: To convert Joules to kWh, divide by 3,600,000 (since 1 kWh = 3.6 MJ). This is useful for estimating electricity costs.