能量耗散率计算器

The Energy Dissipation Rate Calculator helps you measure how quickly energy turns into heat or other forms of loss in a system. Whether you're working in electronics, physics, or fluid dynamics, this tool simplifies complex calculations into clear results. It calculates energy loss over time or from physical and electrical variables, allowing engineers, technicians, and students to monitor and optimize system performance efficiently.

此计算器属于 Physics and Engineering Calculators category and supports practical tasks like evaluating circuit heat losses, studying turbulence in fluids, or examining mechanical damping.

Formula of Energy Dissipation Rate Calculator

1. 通式

P = ΔE / Δt

地点：

• P = energy dissipation rate (watts, W)
• ΔE = energy dissipated (joules, J)
• Δt = time interval (seconds, s)

This formula calculates how much energy dissipates per second, useful for many physical systems.

2. Electrical Systems (Ohmic Losses)

功率因数=I²×R

地点：

• I = current (amperes)
• R = resistance (ohms)
• P = power lost as heat (watts)

Use this when you're analyzing electrical circuits and looking for how much energy converts into heat in resistors.

3. Fluid Dynamics and Turbulence (Kolmogorov Theory)

ε = μ × (∂u/∂x)²

地点：

• ε = energy dissipation per unit mass (W/kg)
• μ = dynamic viscosity (Pa·s)
• ∂u/∂x = velocity gradient (s⁻¹)

This applies in turbulent flow simulations, helping engineers and researchers evaluate energy loss due to fluid motion.

参考表

This table offers quick insights for those who want estimated values without running full calculations each time.

Example of Energy Dissipation Rate Calculator

General Case

If a system loses 300 joules of energy over 60 seconds:

P = ΔE / Δt
P = 300 / 60 = 5瓦

So, the energy dissipates at a rate of 5 W.

Electrical Example

In a resistor circuit where current is 3 amperes and resistance is 2 ohms:

功率因数=I²×R
P = 3² × 2 = 9 × 2 = 18瓦

This means 18 watts of power converts into heat through resistance.

最常见的常见问题解答