The check valve is used in the piping system, its main function is to prevent the backflow of the medium, prevent the pump and its driving motor from reversing, as well as the release of the medium in the container.
Check valves can also be used to feed pipes where the pressure may rise to exceed the pressure of the main system. Check valve according to the different material, can be applied to a variety of media pipeline.
The check valve is installed on the pipeline, which becomes one of the fluid components of the complete pipeline. The opening and closing process of the valve disc is affected by the transient flow state of the system in which it is located. In turn, the closing characteristics of the disc have an effect on the fluid flow state.
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20 energy-saving tips to teach you energy saving and environmental protection knowledge
Energy conservation plays a crucial role in addressing the growing environmental challenges we face today. Natural disasters such as typhoons, droughts, floods, melting glaciers, and species extinction are all linked to climate change, which is largely driven by the excessive use of fossil fuels. These activities release large amounts of carbon dioxide into the atmosphere, accelerating global warming and threatening our planet's future.
In China’s "Eleventh Five-Year Plan," one of the key goals was to reduce energy consumption per unit of GDP by 20%. This initiative highlights the importance of individual and collective efforts in achieving energy efficiency. The tips provided in this guide can help each of us contribute to this important goal.
For instance, using just one kilowatt-hour of electricity saves about 0.4 kilograms of coal, 4 liters of clean water, and reduces carbon dioxide emissions by 1 kg and sulfur dioxide by 0.03 kg. These numbers may seem small, but they add up significantly when millions of people take action.
Understanding these figures is essential because we are dealing with an environment that is deteriorating, natural resources that are being depleted, and rising living costs. However, even small changes in our daily habits can lead to meaningful improvements. By making simple choices, we can help create a better world for future generations.
Here are 20 practical energy-saving tips:
**Tuen Mun 1: Use Energy-Saving Air Conditioning**
Energy-saving air conditioners provide the same cooling effect while consuming less power. If every household in the country used them, it could save 3.3 billion kWh of electricity annually—equivalent to building a 600,000 kW thermal power plant and reducing greenhouse gas emissions by 3.3 million tons.
**Tuen Mun 2: Adjust Air Conditioner Temperature**
Raising the temperature by just one degree Celsius can save 3.3 billion kWh of electricity yearly. It also helps maintain body temperature regulation and reduces the risk of catching a cold.
**Tuen Mun 3: Use Energy-Saving Light Bulbs**
An 11W energy-saving bulb provides the same light as a 60W regular bulb but uses 80% less energy. If 1.2 billion such bulbs were used nationwide, the saved electricity would be equivalent to the annual output of the Three Gorges Dam.
**Tuen Mun 4: Dim the TV Screen**
Keeping the screen at a moderate brightness not only saves energy but also protects your eyes, especially for children. With 300 million TVs in China, dimming the brightness could save 5 billion kWh of electricity annually.
**Tuen Mun 5: Unplug Electronics When Not in Use**
Many devices continue to consume power even when turned off. If everyone unplugged unused electronics, the country could save 18 billion kWh annually—equal to the combined output of three Daya Bay nuclear power plants.
**Tuen Mun 6: Optimize Computer Power Settings**
Setting the monitor to sleep mode after a short period of inactivity and unplugging the computer when not in use can save at least 1 kWh per day, while also extending the life of your equipment.
**Tuen Mun 7: Choose an Energy-Efficient Refrigerator**
Energy-saving refrigerators are more efficient and can save around 2,000 yuan in electricity over their lifetime.
**Tuen Mun 8: Use Your Refrigerator Wisely**
Even with a regular refrigerator, following simple steps like defrosting regularly, minimizing door opening, and thawing food properly can save over 20 kWh per year.
**Tuen Mun 9: Use a Microwave for Cooking**
Microwaves heat food directly, resulting in less energy loss. They are 65% more efficient than electric stoves and 40% more efficient than gas cooktops.
**Tuen Mun 10: Install a Dual-Button Toilet**
A dual-flush toilet can save at least half the water compared to a single-flush model. Water conservation also reduces the energy needed for water treatment and sewage disposal.
**Tuen Mun 11: Choose an Energy-Efficient Washing Machine**
High-efficiency washing machines can save at least half the water and electricity, allowing you to wash twice as much laundry with the same amount of resources.
**Tuen Mun 12: Save Water Daily**
Reusing water from washing your face to wash your feet or collecting wastewater for the toilet can make a big difference. A family of three can save over 1 ton of water monthly through small habits.
**Tuen Mun 13: Go Paperless**
Using email, instant messaging, and digital documents instead of printing can significantly reduce paper usage. If all offices went paperless, it could save over 1 million tons of paper and 1 million tons of standard coal annually.
**Tuen Mun 14: Install Insulated Windows and Doors**
Windows and doors account for nearly 50% of a building’s energy loss. Insulated glass helps keep homes comfortable while reducing heating and cooling costs.
**Tuen Mun 15: Control Home Heating Efficiently**
Installing a thermostat allows you to manage heating based on your needs. This can cut heating costs by up to 15% compared to traditional systems.
**Tuen Mun 16: Use Solar Water Heaters**
A 2-square-meter solar water heater can meet 70% of a household’s hot water needs annually, saving both electricity and gas.
**Tuen Mun 17: Choose Small Displacement Cars**
Smaller cars are more fuel-efficient, produce less pollution, and are easier to park in crowded cities. They offer a practical and eco-friendly alternative to larger vehicles.
**Tuen Mun 18: Take Public Transportation**
Using buses and subways instead of private cars reduces traffic congestion and saves energy. Buses are 10 times more efficient than cars in terms of passenger transport and emit 16 times less harmful gases.
**Tuen Mun 19: Drive Smart**
Maintaining a steady speed, avoiding sudden acceleration, and keeping tires properly inflated can improve fuel efficiency and reduce emissions.
**Tuen Mun 20: Ride a Bicycle**
Cycling is a great way to stay healthy, avoid traffic, and reduce pollution. If one-third of people switched to cycling, it could save 17 million tons of gasoline annually—equivalent to the production of a major oil company.
By adopting these energy-saving practices, we can all play a part in creating a more sustainable future. Every small step adds up, and together, we can make a real difference.