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💡 LED 灯节电计算LED Savings Calculator
把旧灯泡换成 LED：每年节电 = (旧功率 - LED 功率) × 数量 × 每天小时数 × 365 ÷ 1000，并计算节省电费和回本时间。本地处理。Switching to LED: energy saved per year = (old watts - LED watts) × bulbs × hours per day × 365 ÷ 1,000, with money saved and payback time. Processed locally.
使用说明与常见问题How-to & FAQ
「LED 灯节电计算」是什么？What is the LED Savings Calculator tool?
把旧灯泡换成 LED：每年节电 = (旧功率 - LED 功率) × 数量 × 每天小时数 × 365 ÷ 1000，并计算节省电费和回本时间。本地处理。Switching to LED: energy saved per year = (old watts - LED watts) × bulbs × hours per day × 365 ÷ 1,000, with money saved and payback time. Processed locally.
如何使用「LED 灯节电计算」？How do I use the LED Savings Calculator tool?
填写旧灯和 LED 的功率、灯泡数量、每天使用小时数和电价，即可得到每年省下的电量和电费；再填写每个 LED 的价格，还会给出回本时间。结果会随输入实时更新。Enter the old and LED wattages, the number of bulbs, hours per day and the electricity price to see the energy and money saved per year; add the price per LED to get the payback time. The result updates as you type.
亮度对应？Brightness match?
60 W 白炽灯约 800 流明，对应 8-10 W LED。A 60 W incandescent gives about 800 lumens, matching an 8-10 W LED.
能举个计算实例吗？Can you show a worked example?
例如在「LED 灯节电计算」中填 旧灯功率 W = 60，LED 功率 W = 9，灯泡数量 = 10，每天使用小时 = 5，电价（每 kWh） = 0.15，每个 LED 价格 = 3，结果区显示：每年节电：930.75 kWh；每年省电费：139.61；LED 总价：30.00；回本时间：2.6 个月For example, entering Old bulb watts = 60, LED watts = 9, Number of bulbs = 10, Hours per day = 5, Electricity price (per kWh) = 0.15, Price per LED = 3 in the LED Savings Calculator gives: Energy saved per year: 930.75 kWh; Money saved per year: 139.61; LED cost: 30.00; Payback: 2.6 months
哪些输入会被检查？Which inputs are validated?
「LED 灯节电计算」会检查这些输入——「旧灯功率 W」、「LED 功率 W」：必须填写，须大于 0；「灯泡数量」：必须填写，不能为负数，须为整数；「每天使用小时」、「电价（每 kWh）」、「每个 LED 价格」：必须填写，不能为负数；绝对值超过 10¹⁵ 的数也会被拒绝。不符合时结果区显示具体提示，不会给出数字。The LED Savings Calculator checks its inputs — "Old bulb watts", "LED watts": required, must be greater than 0; "Number of bulbs": required, cannot be negative, must be a whole number; "Hours per day", "Electricity price (per kWh)", "Price per LED": required, cannot be negative; numbers above 10¹⁵ in absolute value are rejected too. When a value fails, the result area names the problem instead of showing a number.
有哪些选项可以调整？What options can I adjust?
「LED 灯节电计算」的设置：「旧灯功率 W」默认 60；「LED 功率 W」默认 9；「灯泡数量」默认 10；「每天使用小时」默认 5；「电价（每 kWh）」默认 0.15；「每个 LED 价格」默认 3。每次生成结果都按当前设置处理。Settings in the LED Savings Calculator — "Old bulb watts" default 60; "LED watts" default 9; "Number of bulbs" default 10; "Hours per day" default 5; "Electricity price (per kWh)" default 0.15; "Price per LED" default 3. The result always uses the current settings.
「LED 灯节电计算」免费吗？需要注册吗？Is the LED Savings Calculator free? Do I need an account?
「LED 灯节电计算」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The LED Savings Calculator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.