The Temperature Propagation near the Peltier Cooling Elements

摘要

The regulation of the human body temperature becomes more relevant problem for climate conditions cardinal exchanges. When environmental temperature increases or decreases too much, human has no possibility to achieve his thermal comfort by himself, additional help is necessary for this reason. In our case we offer additional temperature regulation system of the human body integrated into wearing clothes [1]. We can summarize this system as a system human - clothing - environment. The cooling elements based on the thermoelectric effect are used for this system development, they called Peltier elements [2, 3]. The basic advantages of this elements are - reliability, safety for human, "green" technology, precision, long exploitation time, absence of mechanical parts, possibility to use the same system for heating too. So suppose the value of the eliminated heat flow from the human body is Q_∑. We can reach this value with one powerful Peltier element, or with some quantity of those elements with less power. Obviously, the human will feel enough comfortable only in this case, when whole his body simultaneously is cooled [4]. But that isn't very rational solution the entire body to lay with Peltier elements. Let's try to find how we need to distribute well-balanced Peltier elements PE for effectiveness of the human body cooling. We analyze the case when body is covered by clothes and don't has direct contact with external surroundings. In this case thermal resistance of the surface layer of the human body is considerably less than resistance of the system air-clothes-ambience. So we can carry that the heat from the body is transferred only by Peltier cooling element.