"Electric Energy and Social Development" Household Circuits and Safe Electricity Use PPT Courseware

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"Electric Energy and Social Development" Household Circuits and Safe Electricity Use PPT Courseware

1. my country’s electric power industry

my country's electric power industry began in 1882. By 1949, the national power generation capacity was only 4.3×109KW·h, ranking 25th in the world. By 2013, it ranked first in the world.

At present, in addition to Hong Kong, Macao and Taiwan, my country has formed 7 inter-provincial power grids, including North China, Northeast China, East China, Central China, Northwest China, Sichuan and Chongqing and Southern United, and 5 independent provincial power grids.

Power grid: It is a regional power transmission and distribution system that combines neighboring power plants, substations, and high-voltage transmission lines. It has the function of unified management and unified deployment of large-area power transmission and distribution.

In order to meet the needs of my country's national economic and social development, the country is vigorously implementing the strategy of transmitting electricity from west to east. At present, there are three lines for power transmission from the Three Gorges of the Yangtze River to East China (power transmission from west to east): Gehu Line, Longzheng Line, and Three Gorges to Qingpu Line.

2. Save electricity

What can you do with one kilowatt hour of electricity?

How to develop a good habit of saving electricity?

Promoting electricity conservation can reduce energy consumption, protect the environment, is conducive to the sustainable development of society, and is also related to the improvement of everyone's quality of life.

Ways to save electricity in the classroom:

Electric fans and lights are available as needed

Students who arrive early in the classroom should not turn on all the lights or fans. Turn on the lights wherever they sit. If students arrive early, it is best to sit by the window and reduce or delay the time they turn on the lights or fans.

Turn off fans and lights immediately during recess and after school to reduce unnecessary power consumption.

Turn off the main switch of multimedia in the classroom when not in use to avoid unnecessary power consumption.

It is also necessary to ensure that the lights are extinguished when people leave, and the "eternal lights" are eliminated.

Tips for selecting light bulb power

Generally speaking, 2 watts per square meter of bathroom lighting is enough;

4 watts per square meter is enough for the dining room and kitchen, while the study and living room are larger and require 8 watts per square meter;

Table lamps on desks and bedside tables can use 15 to 60 watt bulbs, preferably no more than 60 watts.

Tips for saving electricity with household appliances

1. Lighting According to electricity experts, under the same brightness, energy-saving lamps save 80% of electricity than incandescent lamps and have a longer lifespan.

2. When the rice cooker is cooking, you can cut off the power as long as it is cooked to the right level, and cover the pot with a towel to reduce heat loss; use hot or warm water when cooking, which can save 30% of electricity; Unplug it immediately after completion, which can not only reduce power consumption but also extend service life.

3. TV control brightness. Generally, the power consumption of a color TV at its brightest and darkest hours can differ by 30 to 50 watts. Control the volume. Large volume means high power consumption. For every additional 1 watt of audio power, an increase of 3 to 4 watts is required. Watts of power consumption. Add a dust cover. The dust cover can prevent the TV from absorbing dust. If there is too much dust, it may leak electricity and increase power consumption.

4. Electric fan

Generally, electric fans with larger blades have greater electrical power and consume more electrical energy. Under the premise of meeting the usage requirements, use medium and slow gears as much as possible.

Other home appliances

The plugs and sockets of household appliances must be in good contact, otherwise it will increase power consumption and may damage the appliances. The electric kettle's electric heating tube should be cleaned up in time after scale has accumulated, so as to improve thermal efficiency and save electricity. The room where the electric heater is used should be sealed as much as possible to prevent heat loss. When the room temperature reaches the required level, the power should be turned off in time. It is best to iron clothes. Purchase a temperature-controlled electric iron with a power of 500 watts or 700 watts. This kind of electric iron heats up quickly and can automatically cut off the power when it reaches the operating temperature, thus saving electricity.

Most of today's household appliances have a standby function. The average monthly standby energy consumption of each household in my country is about 10 kilowatt hours. The waste caused by the standby mode of household appliances is very serious. Therefore, try not to leave home appliances in standby mode. When home appliances are not in use, turn off the power completely and unplug the power socket.

Standby energy consumption refers to the power consumption of electrical products that are connected to the power supply and in a waiting state. Generally speaking, products with functions such as remote control switches, wake-on-network, timer switches, and smart switches all have standby energy consumption.

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"Electric Energy and Social Development" Household Circuits and Safe Electricity Use PPT Courseware 2:

"Electric Energy and Social Development" Household Circuits and Safe Electricity Use PPT Courseware 2 1. my country's Electric Power Industry my country's electric power industry began in 1882. By 1949, the national power generation capacity was only 4.3109KWh, ranking 25th in the world. By 2000, it jumped Ranking 2nd in the world; currently, our country...

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Update Time: 2024-11-18

This template belongs to Physics courseware Guangdong and Shanghai Edition Ninth Grade Physics Volume 2 industry PPT template

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