Tuesday, March 1, 2011

PEX tubing: The effect of self-regulation

In accordance with the laws of physics, the temperature is transferred from a warmer object colder. If the room there are other sources of low-grade heat (solar radiation, a large crowd of people, computers, intense lighting, etc.), they give up their heat to the environment. Because the temperature of the floor surface differs very little from room temperature, the low-potential sources become "participants" the heating process, ie, the heat is obtained (offset) of these low-potential sources. With increasing temperature, indoor air is reduced heat extraction from the PEX tubing system. This happens in practice, "spontaneously", "automatically", and therefore became known as "the effect of self-regulation."

Radiators, of course, work on the same physical principle "from warm to cold." However, the temperature difference between the surface of the radiator and air conditioning systems (as well as low-potential heat sources) are so large that the effect of self-regulation ("Accounting" low-potential heat sources) does not arise. (Most low-grade source itself from the radiator heats up, it becomes a full "partner" of the radiator in the heat balance of the space).

Output (very important!):
- Heat from the floor is reduced when the ambient temperature approaches the temperature of the floor surface
- Heat from the floor surface increases when decreasing the room temperature
- Or in other words: the greater the heat loss room, the more heat is required and the higher the temperature of the floor surface


In addition, there are a number of important concepts arising from the above said:
- The greater the temperature difference between the floor and the room temperature, the more heat from the floor surface. Thus Power Radiant PEX tubing system depends on the difference between these temperatures.
- Maximum temperature of the surface coverage is limited to medical standards, characteristic of the material of manufacture, etc. There are similar restrictions and room temperature, depending on its destination. Therefore required: Professional Thermal Calculation of Radiant floor, there are limits to the possibility of Radiant Floor Heating Systems.
- If your device combined systems (high-temperature heaters + PEX tubing + Radiant Floor) in the same room may cause "conflict" between the systems. Therefore, in such cases requires a very careful approach to choosing and building a separate control systems of these devices.
- There are fundamental aspects, concepts and definitions that have a significant effect on longevity, korektno performance and reliability of PEX Tubing Heating.

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