Normal Cycle Medium Heat - This symbol indicates to use the Normal dry cycle with medium heat. It's depicted as a square with a circle and two dots inside. Normal Cycle High Heat - This symbol means to use the Normal dry cycle with high heat. It's represented by a square with a circle and three dots inside.
The square with a circle inside is the general symbol for tumble drying. If you see it on a laundry label, your item can be tumble-dried, and it's safe to put it in the dryer. If a laundry item should not be tumble-dried, you will see the same square with a circle, but it will be crossed out.
Drying. A circle in the square symbolizes a clothes dryer. One dot requires drying at reduced temperature and two dots for normal temperature. The crossed symbol means that the clothing does not tolerate machine drying.
If there is a dot in the middle of the circle, it must be done on a low heat. Two dots means it can be dried on a high heat. If there is a cross through it, this is the do not tumble dry symbol, so the item is not suitable to be tumble-dried.
Two dots inside the circle indicate that you can dry your garment at regular temperatures of up to 80°C. The dryer symbol with three dots in a circle indicates that you can and should dry your item at the highest temperature. The drying symbol in the form of an empty square stands for air drying.
The symbol c stands for specific heat, and depends on the material and phase. The specific heat is the amount of heat necessary to change the temperature of 1.00 kg of mass by 1.00 ºC. The specific heat c is a property of the substance; its SI unit is J/(kg⋅K) or J/(kg⋅°C).
Drying Symbol
This symbol is represented by a square. If there is nothing inside the square, it means that you can tumble dry the garment on any heat setting. If there is a circle inside the square, it means that you can tumble dry the garment but only on a low heat setting.
“Tumble dry low” means to dry your item in the dryer on a low heat setting or Delicate cycle. Low heat is usually around 125 degrees Fahrenheit and is designed for delicate items like knitwear or sheer fabrics, as well as workout clothes made of high-performance fabric like spandex and lycra.
The sun symbol simply means that the machine is in the dry cycle. Unplug it for about one hour to reset the electronic control.
The tumble dry symbol with one dot in the center indicates the dryer should be set on the lowest temperature setting.
As a general rule, higher temperatures are best used for heavy items, like towels, jeans and jackets. Low to medium heat settings are ideal for sheets, blouses and undergarments, while no-heat settings are designed for heat-sensitive fabrics or garments containing rubber or plastic.
The triangle laundry symbol represents bleach usage. An empty triangle indicates that bleach can be used on that item. A triangle with a cross through it means that you should absolutely not wash the item in bleach.
Choosing the right drying cycle
For polyester and mixed fabrics, use the synthetics cycle, which operates at medium heat. Delicate items benefit from the low heat of the delicates cycle. If you're in a hurry, many dryers offer a quick dry cycle for small loads or items you need fast.
If you pull your clothes out of the dryer and notice that there are burn marks on them, your dryer is running far too hot. If your dryer is hot to the touch, that may be another sign of too much heat. Naturally, the dryer will be a little warm to the touch while it's running, but it shouldn't be significantly hot.
The Air Only cycle or Air/Fluff Only does not add heat to the dryer at any time during the cycle. Expect loads dried with the Air Only cycle or Air/Fluff Only temperature to take longer to dry. Air Only cycle or Air Only temperature can be found on the control knob or button with the other temperature selections.
A square with a circle inside it and 1 dot – means you can dry the garment on a low heat setting. A square with a circle inside it and 2 dots – means you can dry the garment on a high heat setting. A square with a circle inside it that's crossed through – means you cannot tumble dry this garment.
The square with a circle inside is the general symbol for tumble drying. If you see it on a laundry label, your item can be tumble-dried, and it's safe to put it in the dryer. If a laundry item should not be tumble-dried, you will see the same square with a circle, but it will be crossed out.
Tumble dry no heat means using the dryer without any heat. The dryer simply tosses your clothes using room temperature air. This setting is often used to fluff-up garments, and help remove dust or lint. It can be utilized for a similar result to air drying and may help to prevent shrinkage in clothes.
The low heat setting can be used after washing a down comforter or to tumble dry a duvet (but do check the tags on the items to make sure this doesn't conflict with the manufacturers' recommendations). Low is around 120 to 122°F (49 to 50ºC) on Samsung tumble dryers, as an example.
Tumble dry is when you put your laundry items into the dryer instead of air-drying them. Every setting you choose when using your dryer is considered a tumble dry setting. Pretty simple, right?
The sun symbol on the air conditioner represents the opposite of the snowflake. The sun symbol indicates that the unit is in heat mode and will release hot air.
The symbol Q for heat was introduced by Rudolf Clausius and Macquorn Rankine in c. 1859. , but it is not a time derivative of a function of state (which can also be written with the dot notation) since heat is not a function of state.