To solve the problems of traditional grounded kang

such as uneven temperature of kang-surface

low thermal efficiency

large exhaust heat loss

excessive indoor pollutant concentration

etc. this research puts forward a new combination of elevated kang and radiator heating system. A traditional grounded kang and the new heating system were built respectively in two same southern rooms of a new farm house in Yushu County

Jilin Province

to test the temperature of kang-surface

exhaust temperature

indoor temperature

and indoor pollutant concentration for the quantitative analysis of thermal performance of this new system. Under the same fuel consumption

the temperature standard deviation of the kang surface of the novel kang was 4.8 ℃ lower than that of the traditional ones while the temperature at the head-side was 9.4 ℃ lower. The efficiency of the heating system was 21.26% higher than that of the traditional grounded kang based on counter-balance calculation

and the indoor average temperature increased by 5.7 ℃. In addition

the CO concentration indoors decreased to the standard range. When getting the same indoor temperature

the new heating system can save 1 972.2 kg straw

which can reduce 2 603.3 kg emission of CO2 and 1.0 kg emission of SO2 per year. The test results show that the new system can not only solve the problems of traditional grounded kang but also improve the indoor environment significantly and has significant effect on energy saving and emission reduction. Thus

the popularization and application of this new combined operation system can reduce the heating energy consumption considerably and improve the living environment of residences in northern rural areas.