Table 4.

Energy-related properties of the hydrochars.

Preparation Conditions	HHV (MJ/kg)	Energy Density	Energy Yield (%)
140 °C—2.3 h	19.3 (0.1)	1.10	65.5
152 °C—1 h	19.1 (0.1)	1.09	66.7
152 °C—3.5 h	19.9 (0.1)	1.13	66.1
180 °C—0.5 h	19.5 (0.1)	1.11	53.7
180 °C—2.3 h	20.8 (0.2)	1.18	57.9
180 °C—4 h	21.6 (0.1)	1.23	56.7
208 °C—1 h	21.6 (0.1)	1.23	49.5
208 °C—3.5 h	21.4 (0.5)	1.22	45.8
220 °C—2.3 h	22.3 (0.1)	1.27	40.0