Patent ID: 6666037
Filing Date: 2003-12-23
Classification: F25B

Abstract:
A method of controlling an absorption refrigerator, comprising the steps of:controlling a heating amount Q1 of an absorption liquid by a heat source A by means of a control using a first set temperature value T1 of cold water supplied from an evaporator as a reference value, the heat source A being to be preferentially used; controlling a residual heating amount Q2 of the absorption liquid by a heat source B by means of a control using a second set temperature value T2 higher than the first set temperature value T1 as a reference value; releasing heat of the refrigerant vapor for condensation in a condenser, the refrigerant vapor being evaporated and separated from the absorption liquid by heating the absorption liquid; evaporating the condensed liquid refrigerant in the evaporator; and supplying cold water cooled in the evaporation of the refrigerant in the evaporator to a load to perform a cooling operation such as air conditioning; wherein when the heating amount Q2 of the absorption liquid is continuously a minimum value for a predetermined time, the heating amount Q2 of the absorption liquid is reduced to zero and the heating amount Q1 of the absorption liquid is controlled by means of the control using the first set temperature value T1 as a reference value, and wherein when the heating amount Q1 of the absorption liquid is continuously a maximum value for a predetermined time, the heating amount Q1 of the absorption liquid is forcibly controlled to be the maximum value and the heating amount Q2 of the absorption liquid is controlled by means of the control using the second set temperature value T2 as the reference value.