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Watt Converter

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1. What is a Watt Converter?

Definition: This calculator converts power values between different units, such as watts, horsepower, and more.

Purpose: It is used in engineering, physics, and energy analysis to convert power measurements for various applications.

2. How Does the Calculator Work?

The calculator converts the input power to watts (W) as a base unit, then converts the result to the desired output unit using the following conversion factors:

Unit Conversions:

  • 1 pW = \( 10^{-12} \) W
  • 1 nW = \( 10^{-9} \) W
  • 1 μW = \( 10^{-6} \) W
  • 1 MW = \( 10^6 \) W
  • 1 GW = \( 10^9 \) W
  • 1 TW = \( 10^{12} \) W
  • 1 PW = \( 10^{15} \) W
  • 1 L⊙ = \( 3.826 \times 10^{26} \) W
  • 1 BTU/h = 0.293071 W
  • 1 hp(M) = 735.49875 W
  • 1 hp(E) = 746 W
  • 1 ahp = 632.415 W
  • 1 hp(S) = 9812.5 W
  • 1 kcal/min = 69.767 W
  • 1 kcal/h = 1.16278 W
  • 1 erg/s = \( 10^{-7} \) W
  • 1 TR = 3516.8525 W

Steps:

  • Enter the power value and select the input unit.
  • Select the desired output unit.
  • Convert the input power to watts (W).
  • Convert the watts to the output unit.
  • If the result is less than 0.001, display it in scientific notation; otherwise, display it with 3 decimal places.

3. Importance of Watt Conversion

Converting power units is crucial for:

  • Engineering: Comparing power ratings in different systems.
  • Energy Analysis: Calculating energy consumption in various units.
  • Education: Understanding the relationships between different power units.

4. Using the Calculator

Examples:

  • Example 1: Convert 1000 W to hp(E):
    • Input: 1000 W
    • Output: \( 1000 / 746 = 1.340 \, \text{hp(E)} \)
  • Example 2: Convert 1 W to pW:
    • Input: 1 W
    • Output: \( 1 / 10^{-12} = 1000000000000 = 1.000 \times 10^{12} \, \text{pW} \)
  • Example 3: Convert 0.0000001 W to W:
    • Input: 0.0000001 W
    • Output: Since 0.0000001 < 0.001, display as \( 1.000 \times 10^{-7} \, \text{W} \)

5. Frequently Asked Questions (FAQ)

Q: What is a watt?
A: A watt (W) is the SI unit of power, equal to one joule per second, measuring the rate of energy transfer.

Q: What is the difference between hp(M) and hp(E)?
A: Metric horsepower (hp(M)) is 735.49875 W, used in Europe, while electric horsepower (hp(E)) is 746 W, commonly used for electrical systems.

Q: What is a ton of refrigeration (TR)?
A: A ton of refrigeration (TR) is a unit of power used in cooling systems, equal to 3516.8525 W, representing the power required to freeze one ton of ice in 24 hours.

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