Enhanced Heat Transfer Characteristics of Graphite Concrete and Its Application in Energy Piles

Table 2

Heat conductivity coefficient test results (W/mK).

Environmental temperature	0% graphite	5% graphite	10% graphite	15% graphite	25% graphite
10°C	1.38	1.30	1.33	1.63	2.05
20°C	1.43	1.40	1.48	1.67	2.12
30°C	1.60	1.51	1.52	1.74	2.39
40°C	1.71	1.62	1.76	1.91	2.84