功率 （英語： power）定義為 能量 转换或使用的速率，以單位 時間 的能量大小來表示，即是作 功 的 率。 功率的 國際標準制 單位是 瓦特 （W），名稱是得名於十八世紀的 蒸汽引擎 設計者 詹姆斯·瓦特。 燈泡在單位時間內，電能轉換為熱能及光能的量就可以用功率表示，瓦特數越高表示單位時間用的能力（或電力）越高 [1][2][3]。 能量转换可以作 功，功率也是作功的速率。 當一個人搬著一重物爬了一層的樓梯，不論他是慢慢的走上樓梯或是快跑上樓梯，對重物作的功是相等 …

The difference between kW and kWh, power and energy, which to use when, and how to convert between them.

2024年11月11日 · While Energy, measured in Wh or kWh, represents the "quantity" of electricity that has been consumed or produced over a certain period of time, Power, measured in W or kW, represents the "rate" at which Energy is consumed or produced at a given moment.

A kilowatt-hour (unit symbol: kW⋅h or kW h; commonly written as kWh) is a non-SI unit of energy equal to 3.6 megajoules (MJ) in SI units, which is the energy delivered by one kilowatt of power for one hour.

While kilowatts (kW) and kilowatt-hours (kWh) look almost identical, they are entirely different in what they measure. Kilowatt measures power, or how fast electricity is being used or generated in the moment. You can draw an analogy between Kilowatt and the "speed" at which energy flows.

Kilowatt (symbol: kW) is a unit of electric power. One kilowatt is equal to 1000 watts: 1kW = 1000W

2023年11月17日 · A kilowatt (kW) is a metric unit of power that measures the rate of energy consumption or production. It is equal to 1,000 watts, which is nearly equivalent to 1.34 horsepower.

2024年10月22日 · 功率（KW）和千瓦时（KWh）是两个不同的物理量。 功率是表示单位时间内做功的多少，而千瓦时是能量的单位，表示在一小时内以一千瓦的功率持续工作所消耗的能量。 2. 千瓦时到千瓦的换算关系是：1千瓦时（KWh）等于1千瓦（KW）乘以1小时（h）。 这是因为千瓦时是功率（千瓦）和时间（小时）的乘积。 3. 反过来，千瓦到千瓦时的换算关系是：1千瓦（KW）等于1千瓦时（KWh）除以1小时（h）。 这表示一小时内以一千瓦的功率连续工作所 …

2021年3月22日 · We know that watts (W) measure the rate of energy usage, be it production or consumption. We also know that 1,000 watts, as a measure of power, is known as a kilowatt (kW). If we use 1 kilowatt of power over an hour, we call it a kilowatt-hour (kWh). As such, 1 kWh = 1 kW of power transferred or consumed over an hour.

Power is measured in watts (W), kilo-watts (kW), mega-watts (MW), and giga-watts (GW). The power of a load can change quickly, especially if the load is turning on and off. Examples: A lightbulb uses 100 watts of power. A compressor uses 14 kW when it is running.