Heating principle of electric heating film
The low-temperature radiation electric heating film is a translucent polyester film which can generate heat after being energized, and is made of a special heating made by a conductive special ink, a metal current-carrying strip, and a hot pressing between two insulating polyester films. product. Low-temperature radiant electric heating film heating is a kind of electric radiant heating method. It uses electric power as energy source and electric heating film as heating element. Most of the heat is sent into the room in the form of radiation, so that the walls and furniture are heated, and then heated by convection heat transfer. Indoor air, and through independent temperature control device, it has the characteristics of adjustable temperature and economical comfort.
Can be installed in the ceiling, inside the wall skirt or under the floor. In order to make greater use of the efficiency of the electric heating film, it is required to heat insulation between the electric heating film and the floor and the wall to prevent heat from being lost. The electric heating film of each room is connected into a unit circuit, which is controlled by a thermostat. The thermostat can set the working time and the room heating temperature so that the electric heating film can automatically work or disconnect according to the room temperature condition within the set time. . When the room temperature reaches the temperature set by the thermostat, the electric heating film stops working to save energy.
There are two main ways of heating electric heating film, namely the principle of radiation and conduction.
The principle of conduction, from physics, the conduction of heat must be directly contacted by cold or hot objects or through intermediate media, so that the surface temperature of objects with high temperature will decrease, and the surface temperature of objects with low temperature will rise, our electric heat The film heating temperature is tested and found to be about 35 °C. We can approximate the electric heating film as the heat source; the surface temperature of the floor is the indoor temperature, which can be considered as a cold source, and our electric heating film and the floor are in full contact, so The conduction mode is created. The geothermal film provides sufficient energy by loading 220V, and the surface temperature of the floor will continue to rise until it reaches 35 °C, achieving dynamic balance. When we walked on the floor, we felt the floor was hot.
The principle of thermal radiation, in physics, the matter is composed of molecules, which are composed of atoms and electrons. When the internal electrons are excited to vibrate, alternating electric and magnetic fields are generated, and electromagnetic waves are emitted. Spread to space, this is radiation. The method of excitation is different, the wavelengths of the electromagnetic waves generated are different, and the effects of their projection onto the object are different. If it is caused by its own temperature or thermal motion, the electromagnetic wave generated by the excitation is called thermal radiation.
Thermal radiation does not require the contact of matter to transfer heat, just as the sun can travel through the vast space to the ground. However, the radiative heat transfer process is accompanied by two conversions of the energy form, that is, a part of the internal energy (such as electric energy) is converted into electromagnetic waves, and when the electromagnetic wave can be incident on the surface of another object and absorbed by the quilt, the electromagnetic wave energy is converted into internal Can (such as heat). Then the electric heating film first heats the dense object in the room, and then the object transfers the heat to the air. The temperature of the indoor air rises behind the human body temperature, which reduces the cold radiation of the environment to the human body, so there will be 16 people in the room with electric heating film heating. °C is very comfortable and not cold.
Electric heating film is to follow these two principles to achieve heating. First, the electric energy is connected to the electric heating film, and the current passes through the copper (silver) carrier fluid to heat the graphite, conduct heat through the floor, and continuously emit electromagnetic waves. When electromagnetic waves are emitted into a human body or an object, they are absorbed by the object, and the electromagnetic wave energy is converted into heat energy to make the human body feel warm. Just like the cold winter, we stand outside in the snow and ice. When the sun shines on our bodies, we don’t feel the cold outside, let alone we stand on the floor of the heat source and have the radiant heat of the electric film. The level of comfort can be known. The heating of the electric heating film is such a simple reason to complete a comfortable process.
The main equipment of electrothermal film low temperature radiant heating system is electric heating film and temperature controller. The structure of the electric heating film is two layers of polyester film, and a plurality of special conductive ink lines (resistance lines) are hot-pressed in the middle, and the ink lines are connected in parallel by two silver metal current-carrying strips. The electric heating film is laid on the ground surface or in the ceiling of the gypsum board in the ceiling of the room. It can also be laid on the surface of the wall, connected to the thermostat mounted on the wall through the insulated wire, and the power supply can be controlled to open and close. The temperature compartment is freely regulated and the temperature is comfortable.
The thermostat is an automatic temperature control device installed beside the light switch. It is installed on the dark 86 junction box. It has a temperature sensor (with external) and a temperature scale. It can adjust the room temperature at will, and some can also be used. Digital programming, temperature control in different time periods, can divide the day into six time periods, make a cycle in 7 days, automatically adjust the indoor temperature; when going out for a long time, you can also set the low temperature antifreezing period from 0 to 99 days, and set the room temperature at 6 °C. At the time of booking home, raise the room temperature to a comfortable temperature in advance. Some thermostats can also be remotely controlled by telephone.
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