What is claimed is:
1. 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 forcibly controlled to be 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.
2. The method of controlling an absorption refrigerator according to claim 1, wherein in a state that the heating amount Q1 of the absorption liquid is forcibly controlled to be the maximum value, when a temperature T of the cold water supplied from the evaporator becomes lower than the second set temperature value T2, the control of the heating amount Q1 of the absorption liquid using the first set temperature value T1 as the reference value is started again.
3. The method of controlling an absorption refrigerator according to claim 1, wherein in a state that the heating amount Q2 of the absorption liquid is forcibly controlled to be zero, when a temperature T of the cold water supplied from the evaporator exceeds a third set temperature value T3 higher than the second set temperature value T2, the control of the heating amount Q2 of the absorption liquid using the second set temperature value T2 as the reference value is started again.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A composite RF tag for transmitting and receiving information using an electromagnetic induction method, comprising a magnetic antenna on which an IC is mounted, and an insulating material and a metal material or a conductive material which are formed around the magnetic antenna,
the magnetic antenna comprising a central core formed of a magnetic material, and an electrode material formed into a coil around the central core;
the insulating material being formed around the magnetic antenna except for one longitudinal end of the coil of the magnetic antenna; and
the metal material or the conductive material being formed on an outside of the insulating material,
wherein the RF tag is configured for transmitting and receiving the information at 13.56 MHz, and wherein the metal material or the conductive material is formed into a circular shape in section and has an inner diameter not less than 1.0 time a maximum length of a section of the magnetic antenna.
2. A composite RF tag according to claim 1, wherein a length of the metal material or the conductive material in a depth direction thereof is not less than 1.0 time a longitudinal length of the magnetic antenna.
3. A composite RF tag according to claim 1, wherein the central core has a magnetic permeability of 70 to 120.