Heating and cooling systems in buildings can be divided into three main subsystems: heating/cooling plant, distribution system of the heat transfer medium, and indoor terminal unit. The choice of terminal unit is critical due to its direct effects on thermal indoor environment and system energy use. This paper reports the results of energy and exergy analyses of a single-family house, and an office room, theoretically assuming that they were heated or cooled by an air-based (air heating and cooling) or a water-based system (radiant floor heating and cooling).
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