Behavior modes

such as self-regulating water supply temperature and switching valves in heating circuits

have significant effects on the energy-saving and comfort of household air-source heat pump floor heating systems. In this study

using an actual residence as an example

the heating characteristics of a household air-source heat pump floor heating system under different water supply temperatures and different numbers of heating circuits were experimentally studied. The indoor air temperature

ground temperature

and system power consumption were measured and recorded. When the average outdoor temperature and the maximum water supply temperature of the unit was -2.3 ℃ and 55 ℃

respectively

the ground temperature was very high and the local dissatisfaction rate of the floor surface temperature was more than 20%. Compared to the water supply temperature of 30 ℃

the power consumption increased by 191% and the temperature difference between the living room and the study area increased by more than 2.5 ℃. When the average outdoor temperature was -1.7 ℃

after closing the corresponding floor heating loop valves in the second bedroom and the guest bedroom

the room temperature of the master bedroom

living room

and the study decreased by 1.4 ℃

2.9 ℃

and 0.5 ℃

respectively. Also

the power consumption of the system was reduced by 18.7%.