AIR TEMPERATURE IN THE ROOM

Considering the importance of hygienic heating, one should take into account the loss of heat by humans, depending on the effort you make while working. About 90% the heat from the surface of the skin is transferred to the environment by the radiation, convection and evaporation, the rest of the heat is given off by the respiratory organs.

Air that is cold when it touches warmer objects takes heat away from them, heats up, it becomes lighter than the surroundings and thus rises, giving way to another unheated. On the other hand, warm air, when touched with cold objects, gives up its heat, it becomes heavier and goes down. The same self-circulation of air or water (for example in central water heating) it is done by the force of gravity or gravity. Between the amount of heat absorbed by the human body, and the amount of heat given off to the environment is kept in balance thanks to the self-regulating properties of the organism, the result of which is the average internal temperature of the human body of approx 37 °C. Too high, as well as too low ambient temperatures negatively affect the normal human temperature and cause disturbances in the human body, which proves the need to properly select the ambient air temperature. Therefore, that the emission of heat by the human body and the evaporation of water from the human body depends on the temperature and speed of movement of the surrounding air and its humidity, these factors have a decisive influence on the well-being of a person. Air temperature with normal humidity ranging from 30 into 60% for people with a busy lifestyle it must be higher, than for people who work physically. The air temperature should be the higher, the lower the surface temperature of the surrounding partitions. The air temperature should be as uniform as possible in all points of the heated room and be subject to slight fluctuations throughout the day.

The required temperatures in residential and general use spaces are given in the table, based on the Polish construction standard.

The table shows the temperatures required for different rooms, which in new urban buildings are already predominantly heated by central heating. However, many buildings still have furnaces, which are subject to renovation and relocation. In many cases, especially in the countryside, ovens are still used in public spaces.