Cooling Tips
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"Control the Field" of Beijing's Hot Weather
"Heat" Power Upgrade
Everyone must be prepared for heatstroke and cooling
Master these methods
to help you spend a cool summer
It’s cooler when the fan faces the window Why?
Let’s first understand a physical knowledge point-Bernoulli’s law.
In 11738, Daniel Bernoulli , known as the "father of fluid mechanics ", discovered "Bernoulli's law". This principle can be understood like this: In a fluid system, such as air flow or water flow, the faster the flow speed, the smaller the pressure generated by the fluid.
To put it simply: in general air flow, where the flow velocity is greater, the pressure is smaller. This principle can also be applied in life, for example, cooling a room. A foreign physics teacher told the reason:
On a sultry summer night, if you blow the electric fan against the open window, the air in the room will be blown out, and the room will become a low-pressure area, while the relatively still air outside the window will Because of the high pressure, it flows into the house.
Fresh and cool air from the outside continuously enters the room, promoting air circulation and bringing a cool and light feeling.
You can also open a window on the dark side of the house at the same time, which can also bring in the cool air from outside.
need to be reminded: fan should not be close to the window, but should be pulled back a little distance. When the outdoor temperature is lower than the indoor temperature, the cooling effect can be obvious. If the outdoor temperature is higher than the indoor temperature, doing so may cause the indoor temperature to get higher and higher.
How to use air conditioning correctly?
A large amount of dust will accumulate inside the air conditioner. If it is not cleaned in time during use, it may lead to allergies, coughs, pneumonia and even chronic diseases.
can be cleaned once before use in summer, during use and when no longer in use.
The following three types of people should be careful when using air conditioners:
1 The elderly
Sudden cold or heat may induce cardiovascular and cerebrovascular diseases . It is best to turn on the air conditioner to about 28℃. Be alert if you experience dizziness, confusion, or memory loss.
2 Children
Children can try not to use the air conditioner. Even if it is used, stay far away from the air conditioner. You can touch your hands, feet, and the back of your neck, and pay attention to your child's body temperature.
3 Women
Women with weak bodies and middle-aged and elderly women will feel chills in their bones when the air conditioner is blown, accompanied by pain and coughing. It is best not to blow the air conditioner for these people.
Ice application on these parts is effective in preventing heatstroke
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On hot sauna days, if you need to stay outdoors for a long time, you may wish to bring some ice packs or wet wipes with you and take them out to apply ice or wipe your body at any time, but it is not recommended during use. Apply ice to the forehead. This not only has poor cooling effect, but also easily affects the body's cooling regulation function. When applying ice, you can wipe the neck, armpits, thighs and leg sockets. It will be better to cool these parts to prevent heatstroke.
First aid "five tips" to deal with heat stroke
Under normal circumstances, patients with threatened heat stroke and mild heat stroke can return to normal after on-site rescue.
Move: Quickly get out of the high temperature environment, move the patient to a cool and ventilated place, raise the head at the same time, and unbutton the clothes and pants to facilitate the patient's breathing and heat dissipation.
Second application: Apply warm water to the head first, and then use cold water or ice water.
Three drinks: Drink salty drinks to replenish the water needed by the body in time, and at the same time replenish some inorganic salts.
Four wipes: When there is high temperature, high humidity, no wind, and it is difficult for the body to dissipate heat, you can use cold water or ice water to bathe until the skin becomes red.
Five drops: When the body temperature of a person suffering from heat stroke reaches above 40℃ and symptoms such as coma and convulsions occur, especially the treatment of heat stroke patients, the following principles must be followed: rapid, effective, and continuous cooling; rapid fluid replenishment and volume expansion, if When it is difficult to replenish fluids orally, intravenous rehydration is required; control the patient's agitation and convulsions, and dial 120 at the same time to send the patient to the hospital emergency department as soon as possible.
Special reminder: Do not give water to patients with severe heat stroke. Because when a patient sweats a lot, the sweat will take away a lot of salt, causing an imbalance of electrolytes in the human body. If you give him a lot of water at this time, it will further reduce the effective concentration of electrolytes and make the condition worse.
Content source: Peking University Hospital WeChat public account
Compiled and edited by: Journal of Integrated Traditional Chinese and Western Medicine Nursing
Correspondents: Sun Lei, Qin Shasha, Wang Jingjing, Dong Wei
