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Common sense of heating

Woory Electric Heat is a leading manufacturer of cartridge heaters in Korea.

How does the heating appliance work?

To understand the principle of a radiator, you need knowledge of heat transfer. There are three types of heat transfer, heat conduction, convection, and radiation. Each method does not transfer separately, but works comprehensively to achieve heat transfer.

Heat conduction
As heat energy moves from the high-temperature part to the low-temperature part, the low-temperature part eventually becomes hot like the high-temperature part. Korea's ondol is representative.
It refers to the process of heat transfer as gas or liquid moves directly. Heaters, radiators, and hot water mats are heaters using this phenomenon.
Heat radiation
It refers to when electromagnetic waves (infrared rays) emitted from a heat source are directly absorbed by other objects and turned into heat. The easiest example is that asphalt in the hot summer sunlight emits hot heat at night, and the heat emitted at this time is called radiant heat. It is the heater that applied this heat radiation phenomenon.

Classification by fuel

Depending on the fuel used to operate the heater, there are largely an electric type that uses electricity and a fuel type that uses gas or oil. Since it is the most commonly used fuel, it is easy to purchase heaters that can run on that fuel.

Heater type

first, General electric heater
The heater is the product that utilizes radiant heat most efficiently among the heat transfer methods described above.

Since the heating element is heated by electricity and then heated by radiant heat, it is good to warm a certain area near the heater. As the most basic heater, it is less expensive than other heaters.

In addition, although it is common for electric heaters to use electricity as an energy source, various materials for heating elements, which are heating parts, can be selected, and each heating element has its strengths and weaknesses.
Heating element Advantages Disadvantages
Quartz tube affordable price, Excellent heat efficiency High power consumption, Slow fever rate
Carbon Immediate fever possible, Pay less electricity bill The heating element material is expensive
Near infrared Medical near-infrared application high price
ceramic affordable price, The temperature rises rapidly Slow fever rate, High electricity usage
halogen affordable price, Long life Risk of lamp breakage, Weak to shock

The quartz tube is a heater that generates heat because a heater is built into the glass tube. The heat efficiency is excellent, but the heating rate is slow, so you need to wait. However, it is also available in a mini size at an affordable price, so it is suitable for easy use.

Carbon heater is a product made with carbon fiber. It emits light rays harmless to the human body and does not heat the air, making it suitable for indoor use. However, there is a disadvantage that the heating element material itself is expensive compared to other heaters.

The near-infrared heater uses a special coating to emit near-infrared rays on the lamp and uses it as a heating element. It is also a heater that acts directly on the human body rather than heating air.

Ceramic heaters are the easiest heaters to find around. It is said to have high efficiency as heat reaches a large area by winding a heating element, which is a heating element, to generate heat. It reacts with the moisture in the skin and the temperature rises quickly, so you can feel even warmer. However, it heats up slowly and it takes a while to warm up.

Halogen heater is a heater that creates a heating effect by converting light from a halogen tube made by injecting halogen gas into heat. Compared to other heaters, it is a type that is sold a lot recently because it is cheaper and has a longer life. However, since the lamp is used, it is vulnerable to impact and the risk of damage is high.

second, Radiators for use in the bathroom
The bathroom heater is a wet and cold space. Especially if the draft is severe, It is a good warmer that is essential to install if you are a home with a child.
Basically, it uses a heating element similar to a regular electric heater, Because it is a space that cannot consume much time for preheating due to the nature of the space, it requires instantaneous heating power, so carbon heaters or halogen heaters are mainly used. The difference is that the waterproof rating (IP)* has been added as much as it is used in wet places. ※ IP (Ingress Protection) : The level of protection of the device against fresh water
rank Degree of waterproof protection rank Degree of waterproof protection
X No protection 5 Protection against low pressure water jets from all directions
1 Protected against vertically falling water rain 6 Protected against high pressure water jets from all directions
2 Protected against water droplets falling in the vertical 15˚ range 7 Immersion from 15CM to 1M
3 Protected against water droplets falling in the vertical 60˚ range 8 1M or more immersion
4 Protected against water droplets falling from all directions    

There is also a heated bathroom heater, not a heated type. Although the burden of electricity bills is relatively small, a warmer is a little more suitable for bathrooms that require short-time heating because preheating is required. Although this product is used in the bathroom, of course, it can also be used outside the bathroom. Conversely, some electric heaters and air heaters also contain waterproof features, but for safety, it is recommended to use a product exclusively for the bathroom.

third, Radiator and convector

Radiator and convector are products using convection. They both use natural convection, but the difference is that they work fundamentally.

Radiators contain liquid inside a sealed metal, The warmth obtained by heating this liquid heats the metal (radiant heat) and spreads out to the outside, causing convection naturally to heat the room.
The advantage of using convection is that it is effective for space heating and has no noise.

Disadvantages are high power consumption and slow heating speed, The heat is felt on the surface, so there is a risk of burns in direct contact. The size is larger as the number of pins increases.
The convection heater is a device that blocks the outside of the radiator partly and makes a hole at the top and bottom to generate convection to heat it. Simply put, cover the radiator with a partially perforated cover to reduce the risk of burns, Is to use convective heat more effectively than radiant heat.

The advantage is that the noise is less like a radiator, The downside is that since it is a product that mainly uses convective heat, it takes a little longer to heat than a radiator that uses both radiant and convective heat.