able to drive the double effect absorption chiller. The amount of
cooling and heating capacity can be adjusted by the absorption
chiller. When the required digester heating load is large, the jacket
water from the CHP unit is first heated in the hot water heater of
the absorption chiller and then further heated by the 200 °C exhaust
gas. When the heating load is low, the jacket water will be directly
transported to HE1 and HE2 to heat the digester. System 3 is the