  The main goal of this paper is to evaluate the possibility of application or
replacement of radiators with low-temperature radiant panels. This paper shows
the comparison results of operations of 4 space heating systems: the
low-temperature radiant panel system without any additional thermal insulation
of external walls (PH-WOI), the low-temperature radiant panel system with
additional thermal insulation of external walls (PH-WI), the radiator system
without any additional thermal insulation of external walls (the classical
heating system) (RH-WOI), and the radiator system with additional thermal
insulation of external walls (RH-WI). The operation of each system is simulated
by software EnergyPlus. The investigation shows that the PH-WI gives the best
results. The RH-WOI has the largest energy consumption, and the largest
pollutant emission. However, the PH-WI requires the highest investment.
