Heat pump and cooling power generation method

A heat pump comprising:

• an evaporator/condenser including an evaporation section that evaporates a first heat exchange medium and including a flow section through which a second heat exchange medium flows, wherein the evaporator/condenser is also configured to condense the first heat exchange medium;
• a plurality of first reactors, each including a reaction section in which the first heat exchange medium that has been evaporated in the evaporator/condenser reacts and that retains the first heat exchange medium, and including a flow section through which the second heat exchange medium flows;
• a second reactor in which the first heat exchange medium, which has been released from the first reactors, reacts and that retains the first heat exchange medium;
• and
• a switching section comprising a controller and a valve driver that, in a case in which the reaction section of one or more of the first reactors is placed in communication with the evaporation section of the evaporator/condenser, places the reaction section of another of the first reactors in communication with the second reactor, and connects the flow section of the other first reactor that has been placed in communication with the second reactor in series with the flow section of the evaporator/condenser.