Adsorption refrigerator, method for controlling adsorption refrigerator, and cooling system

A method for controlling an adsorption refrigerator, the method comprising:

• (a) preparing the adsorption refrigerator comprising:
• a first adsorber containing a first adsorbent capable of adsorbing and desorbing a first adsorbent refrigerant;
• a second adsorber containing a second adsorbent capable of adsorbing and desorbing the first adsorbent refrigerant;
• a first evaporator capable of evaporating the first adsorbent refrigerant under reduced pressure to cool a first working fluid;
• a first condenser capable of condensing the first adsorbent refrigerant in gaseous state;
• a third adsorber containing a third adsorbent capable of adsorbing and desorbing a second adsorbent refrigerant;
• a fourth adsorber containing a fourth adsorbent capable of adsorbing and desorbing the second adsorbent refrigerant;
• a second evaporator capable of evaporating the second adsorbent refrigerant under reduced pressure to exhibit a cooling capacity,
• a second condenser capable of condensing the second adsorbent refrigerant in gaseous state,
• a first heat exchanger capable of applying heat absorbed from a first heat source to a first heating medium,
• a second heat exchanger capable of removing and releasing heat from a second heating medium, and
• a controller that performs control for switching to any of a first state, a second state, a third state, and a fourth state;
• and
• (b) performing switching to any of the first state, the second state, the third state, and the fourth state,
• wherein:
• in the first state,
• the first evaporator is connected to the first adsorber,
• the second evaporator is connected to the third adsorber,
• an inlet port of the second adsorber is connected to an outlet port of the first heat exchanger, and an outlet port of the second adsorber is connected to an inlet port of the first heat exchanger, so that a first circulation path is formed,
• the first heating medium which has flown out of the outlet port of the first heat exchanger flows into the inlet port of the second adsorber,
• the first adsorbent refrigerant adsorbed by the second adsorbent is desorbed by heat of the first heating medium heated by the first heat exchanger in the second adsorber,
• the first heating medium which has flown out of the outlet port of the second adsorber flows into the inlet port of the first heat exchanger,
• an inlet port of the third adsorber is connected to an outlet port of the second heat exchanger, an outlet port of the third adsorber is connected to an inlet port of the second condenser, an outlet port of the second condenser is connected to an inlet port of the first condenser, and an outlet port of the first condenser is connected to an inlet port of the second heat exchanger, so that a second circulation path is formed,
• the second heating medium which has flown out of the outlet port of the second heat exchanger flows into the inlet port of the third adsorber,
• the second adsorbent refrigerant evaporated by the second evaporator is adsorbed by the third adsorbent in the third adsorber to heat the second heating medium,
• the second heating medium which has flown out of the outlet port of the third adsorber flows into the inlet port of the second condenser,
• the second heating medium which has flown out of the outlet port of the second condenser flows into the inlet port of the first condenser,
• the second heating medium which has flown out of the outlet port of the first condenser flows into the inlet port of the second heat exchanger,
• an outlet port of the first adsorber is connected to an inlet port of the fourth adsorber, and an inlet port of the first adsorber is connected to an outlet port of the fourth adsorber, so that a third circulation path is formed,
• the first adsorbent refrigerant evaporated by the first evaporator is adsorbed by the first adsorbent in the first adsorber to heat a third heating medium,
• the third heating medium which has flown out of the outlet port of the first adsorber flows into the inlet port of the fourth adsorber,
• the second adsorbent refrigerant adsorbed by the fourth adsorbent is desorbed by heat of the heated third heating medium in the fourth adsorber, and
• the third heating medium which has flown out of the outlet port of the fourth adsorber flows into the inlet port of the first adsorber;
• in the second state,
• the first evaporator is connected to the second adsorber,
• the second evaporator is connected to the fourth adsorber,
• the inlet port of the first adsorber is connected to the outlet port of the first heat exchanger, and the outlet port of the first adsorber is connected to the inlet port of the first heat exchanger, so that a fourth circulation path is formed,
• the first heating medium which has flown out of the outlet port of the first heat exchanger flows into the inlet port of the first adsorber,
• the first adsorbent refrigerant adsorbed by the first adsorbent is desorbed by heat of the first heating medium heated by the first heat exchanger in the first adsorber,
• the first heating medium which has flown out of the outlet port of the first adsorber flows into the inlet port of the first heat exchanger,
• the inlet port of the fourth adsorber is connected to the outlet port of the second heat exchanger, the outlet port of the fourth adsorber is connected to the inlet port of the second condenser, the outlet port of the second condenser is connected to the inlet port of the first condenser, and the outlet port of the first condenser is connected to the inlet port of the second heat exchanger, so that a fifth circulation path is formed,
• the second heating medium which has flown out of the outlet port of the second heat exchanger flows into the inlet port of the fourth adsorber,
• the second adsorbent refrigerant evaporated by the second evaporator is adsorbed by the fourth adsorbent in the fourth adsorber to heat the second heating medium,
• the second heating medium which has flown out of the outlet port of the fourth adsorber flows into the inlet port of the second condenser,
• the second heating medium which has flown out of the outlet port of the second condenser flows into the inlet port of the first condenser,
• the second heating medium which has flown out of the outlet port of the first condenser flows into the inlet port of the second heat exchanger,
• the outlet port of the second adsorber is connected to the inlet port of the third adsorber, and the inlet port of the second adsorber is connected to the outlet port of the third adsorber, so that a sixth circulation path is formed,
• the first adsorbent refrigerant evaporated by the first evaporator is adsorbed by the second adsorbent in the second adsorber to heat the third heating medium,
• the third heating medium which has flown out of the outlet port of the second adsorber flows into the inlet port of the third adsorber,
• the second adsorbent refrigerant adsorbed by the third adsorbent is desorbed by heat of the third heating medium in the third adsorber, and the third heating medium which has flown out of the outlet port of the third adsorber flows into the inlet port of the second adsorber;
• in the third state,
• the first evaporator is connected to the first adsorber,
• the second evaporator is connected to the fourth adsorber,
• the inlet port of the second adsorber is connected to the outlet port of the first heat exchanger, and the outlet port of the second adsorber is connected to the inlet port of the first heat exchanger, so that the first circulation path is formed,
• the first adsorbent refrigerant adsorbed by the second adsorbent is desorbed by heat of the first heating medium heated by the first heat exchanger in the second adsorber,
• the first heating medium which has flown out of the outlet port of the first heat exchanger flows into the inlet port of the second adsorber,
• the first heating medium which has flown out of the outlet port of the second adsorber flows into the inlet port of the first heat exchanger,
• the inlet port of the fourth adsorber is connected to the outlet port of the second heat exchanger, the outlet port of the fourth adsorber is connected to the inlet port of the second condenser, the outlet port of the second condenser is connected to the inlet port of the first condenser, and the outlet port of the first condenser is connected to the inlet port of the second heat exchanger, so that the fifth circulation path is formed,
• the second heating medium which has flown out of the outlet port of the second heat exchanger flows into the inlet port of the fourth adsorber,
• the second adsorbent refrigerant evaporated by the second evaporator is adsorbed by the fourth adsorbent in the fourth adsorber to heat the second heating medium,
• the second heating medium which has flown out of the outlet port of the fourth adsorber flows into the inlet port of the second condenser,
• the second heating medium which has flown out of the outlet port of the second condenser flows into the inlet port of the first condenser,
• the second heating medium which has flown out of the outlet port of the first condenser flows into the inlet port of the second heat exchanger,
• the outlet port of the first adsorber is connected to the inlet port of the third adsorber, and the inlet port of the first adsorber is connected to the outlet port of the third adsorber, so that a seventh circulation path is formed,
• the first adsorbent refrigerant evaporated by the first evaporator is adsorbed by the first adsorbent in the first adsorber to heat the third heating medium,
• the third heating medium which has flown out of the outlet port of the first adsorber flows into the inlet port of the third adsorber,
• the second adsorbent refrigerant adsorbed by the third adsorbent is desorbed by heat of the third heating medium in the third adsorber, and
• the third heating medium which has flown out of the outlet port of the third adsorber flows into the inlet port of the first adsorber, and
• in the fourth state,
• the first evaporator is connected to the second adsorber,
• the second evaporator is connected to the third adsorber,
• the inlet port of the first adsorber is connected to the outlet port of the first heat exchanger, and the outlet port of the first adsorber is connected to the inlet port of the first heat exchanger, so that the fourth circulation path is formed,
• the first heating medium which has flown out of the outlet port of the first heat exchanger flows into the inlet port of the first adsorber,
• the first adsorbent refrigerant adsorbed by the first adsorbent is desorbed by heat of the first heating medium heated by the first heat exchanger in the first adsorber,
• the first heating medium which has flown out of the outlet port of the first adsorber flows into the inlet port of the first heat exchanger,
• the inlet port of the third adsorber is connected to the outlet port of the second heat exchanger, the outlet port of the third adsorber is connected to the inlet port of the second condenser, the outlet port of the second condenser is connected to the inlet port of the first condenser, and the outlet port of the first condenser is connected to the inlet port of the second heat exchanger, so that the second circulation path is formed,
• the second heating medium which has flown out of the outlet port of the second heat exchanger flows into the inlet port of the third adsorber,
• the second adsorbent refrigerant evaporated by the second evaporator is adsorbed by the third adsorbent in the third adsorber to heat the second heating medium,
• the second heating medium which has flown out of the outlet port of the third adsorber flows into the inlet port of the second condenser,
• the second heating medium which has flown out of the outlet port of the second condenser flows into the inlet port of the first condenser,
• the second heating medium which has flown out of the outlet port of the first condenser flows into the inlet port of the second heat exchanger,
• the outlet port of the second adsorber is connected to the inlet port of the fourth adsorber, and the inlet port of the second adsorber is connected to the outlet port of the fourth adsorber, so that an eighth circulation path is formed,
• the first adsorbent refrigerant evaporated by the first evaporator is adsorbed by the second adsorbent in the second adsorber to heat the third heating medium,
• the third heating medium which has flown out of the outlet port of the second adsorber flows into the inlet port of the fourth adsorber,
• the second adsorbent refrigerant adsorbed by the fourth adsorbent is desorbed by heat of the third heating medium in the fourth adsorber, and
• the third heating medium which has flown out of the outlet port of the fourth adsorber flows into the inlet port of the second adsorber.

An adsorption refrigerator comprising:

• a first adsorber containing a first adsorbent capable of adsorbing and desorbing a first adsorbent refrigerant;
• a second adsorber containing a second adsorbent capable of adsorbing and desorbing the first adsorbent refrigerant;
• a first evaporator capable of evaporating the first adsorbent refrigerant under reduced pressure to cool a first working fluid;
• a first condenser capable of condensing the first adsorbent refrigerant in gaseous state;
• a third adsorber containing a third adsorbent capable of adsorbing and desorbing a second adsorbent refrigerant;
• a fourth adsorber containing a fourth adsorbent capable of adsorbing and desorbing the second adsorbent refrigerant;
• a second evaporator capable of evaporating the second adsorbent refrigerant under reduced pressure to cool a second working fluid;
• a second condenser capable of condensing the second adsorbent refrigerant in gaseous state;
• a first heat exchanger capable of applying heat absorbed from a first heat source to a first heating medium;
• a second heat exchanger capable of removing and releasing heat from a second heating medium;
• and
• a heat recovery path where a third heating medium performs recovery of adsorption heat generated by adsorption-driving of the first adsorber or the second adsorber and performs heat application of regeneration-driving of the third adsorber or the fourth adsorber,
• wherein the heat recovery path is a circulation path that passes through either the first adsorber or the second adsorber and either the third adsorber or the fourth adsorber.