Absorption chiller-heater, replenishing liquid for absorption chiller-heater, absorption liquid for absorption chiller-heater, and maintenance method
A absorption chiller-heater includes a low temperature regenerator, a high temperature regenerator, a condenser, an evaporator, an absorber, and a heat exchanger, in which water is used as a refrigerant and a lithium bromide aqueous solution is used as an absorption liquid, and the absorption liquid contains a molybdate as a corrosion inhibitor, sodium sulfite or sodium bisulfite as a concentration improving agent, and an octyldimethylethylammonium salt or a lauryldimethylethylammonium salt as a dispersant.
1. An absorption chiller-heater comprising
a regenerator, a condenser, an evaporator, an absorber, and a heat exchanger, wherein
water is used as a refrigerant, and a lithium bromide aqueous solution is used as an absorption liquid, and
the absorption liquid used contains all of:
200 ppm to 520 ppm of a molybdate as a corrosion inhibitor;
630 ppm to 2300 ppm of sodium sulfite or sodium bisulfite as a concentration improving agent; and
100 ppm to 1200 ppm of an octyldimethylethylammonium salt or a lauryldimethylethylammonium salt as a dispersant.
2. The absorption chiller-heater according to claim 1 , comprising:
a charging unit that additionally charges a mixture of all of the molybdate, the sodium sulfite or the sodium bisulfite, and the octyldimethylethylammonium salt or the lauryldimethylethylammonium salt.
3. A replenishing liquid for an absorption chiller-heater for an absorption liquid used in an absorption chiller-heater, wherein all of:
2.0% to 5.2% of a molybdate as a corrosion inhibitor,
6.3% to 23% of sodium sulfite or sodium bisulfate as a concentration improving agent, and
1.0% to 12% of an octyldimethylethylammonium salt or a lauryldimethylethylammonium salt as a dispersant
are mixed to produce the replenishing liquid.
4. An absorption liquid for an absorption chiller-heater used in the absorption chiller-heater, wherein all of:
200 ppm to 520 ppm of a molybdate as a corrosion inhibitor,
630 ppm to 2300 ppm of sodium sulfite or sodium bisulfite as a concentration improving agent, and
100 ppm to 1200 ppm of an octyldimethylethylammonium salt or a lauryldimethylethylammonium salt as a dispersant
are mixed in a lithium bromide aqueous solution.
5. A maintenance method of an absorption chiller-heater including a regenerator, a condenser, an evaporator, an absorber, and a heat exchanger, in which water is used as a refrigerant and a lithium bromide aqueous solution is used as an absorption liquid, comprising:
a step of charging a replenishing liquid, which is a mixture of all of: 2.0% to 5.2% of a molybdate as a corrosion inhibitor, 6.3% to 23% of sodium sulfite or sodium disulfite as a concentration improving agent, and 1.0% to 12% of an octyldimethylethylammonium salt or a lauryldimethylethylammonium salt as a dispersant from a charging unit provided in the absorber.
6. The maintenance method of an absorption chiller-heater according to claim 5 , wherein
the charging of the replenishing liquid is performed during operation of the absorption chiller-heater.