1-13. (canceled)
14. A solid oxide fuel cell system comprising:
a reformer configured to generate a hydrogen-containing gas by using a raw material and water;
a solid oxide fuel cell including an anode and a cathode, and configured to generate electric power by using the hydrogen-containing gas supplied from the reformer to the anode and air supplied to the cathode;
a heat radiator configured to radiate heat from at least one of an anode off-gas discharged from the anode and a combustion exhaust gas generated by combusting the anode off-gas to generate condensed water;
a condensed water circulating passage configured to circulate the condensed water supplied from the heat radiator;
a condensed water tank provided on the condensed water circulating passage and configured to store the condensed water therein;
a condensed water pump provided on the condensed water circulating passage and configured to circulate the condensed water; and
a condensed wateroff-gas heat exchanger provided on the condensed water circulating passage and configured to exchange heat between the condensed water and an off-gas discharged from the solid oxide fuel cell to heat the condensed water by the off-gas;
wherein at least a part of the water supplied to the reformer is the condensed water.
15. The solid oxide fuel cell system according to claim 14,
wherein in the solid oxide fuel cell, a temperature of the anode and a temperature of the cathode during power generation are equal to or higher than 600 degrees C. and equal to or lower than 1000 degrees C.
16. A solid oxide fuel cell system comprising:
a reformer configured to generate a hydrogen-containing gas by using humidified air and a raw material;
a solid oxide fuel cell including an anode and a cathode, and configured to generate electric power by using the hydrogen-containing gas supplied from the reformer to the anode and air supplied to the cathode;
an anode off-gas heat radiator configured to radiate heat from an anode off-gas discharged from the anode to generate condensed water;
a condensed water circulating passage configured to circulate the condensed water supplied from the anode off-gas heat radiator;
a condensed water tank provided on the condensed water circulating passage and configured to store the condensed water therein;
a condensed water pump provided on the condensed water circulating passage and configured to circulate the condensed water;
a condensed wateroff-gas heat exchanger provided on the condensed water circulating passage and configured to exchange heat between the condensed water and an off-gas discharged from the solid oxide fuel cell to heat the condensed water by the off-gas; and
a humidifier provided on the condensed water circulating passage and configured to humidify the air by using the condensed water to generate the humidified air to be supplied to the reformer.
17. The solid oxide fuel cell system according to claim 16,
wherein in the solid oxide fuel cell, a temperature of the anode and a temperature of the cathode during power generation are equal to or higher than 600 degrees C. and equal to or lower than 1000 degrees C.
18. The solid oxide fuel cell system according to claim 16,
wherein a minimum discharge amount of the condensed water pump is equal to or more than 50 gminute.
19. The solid oxide fuel cell system according to claim 16,
wherein the off-gas used for heat exchange in the condensed wateroff-gas heat exchanger is a cathode off-gas discharged from the cathode.
20. The solid oxide fuel cell system according to claim 16,
wherein the off-gas used for heat exchange in the condensed wateroff-gas heat exchanger is the anode off-gas discharged from the anode.
21. The solid oxide fuel cell system according to claim 16, further comprising:
a condensed water heat radiator provided on the condensed water circulating passage in a location which is downstream of the humidifier and upstream of the condensed water tank and configured to radiate heat from the condensed water.
22. The solid oxide fuel cell system according to claim 16, further comprising:
a bypass air passage configured to bypass the humidifier such that unhumidified air is supplied to the reformer; and
a first switch configured to perform switching between a state in which the air is supplied to the reformer through the humidifier and a state in which the air is supplied to the reformer through the bypass air passage.
23. The solid oxide fuel cell system according to claim 16, further comprising:
a control unit configured to deactivate the condensed water pump during start-up.
24. The solid oxide fuel cell system according to claim 16, comprising:
a combustor configured to combust the anode off-gas and a cathode off-gas to generate a combustion gas,
wherein the off-gas used for heat exchange in the condensed wateroff-gas heat exchanger is the combustion gas discharged from the combustor.
25. The solid oxide fuel cell system according to claim 16,
wherein the anode off-gas heat radiator is configured to exchange heat between a liquid cooling medium and the anode off-gas to radiate heat from the anode off-gas,
the solid oxide fuel cell system further comprising:
a water storage amount detector configured to detect an amount of water stored in the condensed water tank;
a cooling medium circulating passage configured to circulate the cooling medium;
a cooling medium pump provided on the cooling medium circulating passage and configured to circulate the cooling medium;
a cooling medium heat radiator provided on the cooling medium circulating passage and configured to exchange heat between the cooling medium and atmospheric air to radiate heat from the cooling medium; and
a control unit configured to control a discharge amount of the cooling medium pump based on a result of detection of the water storage amount detector.
26. The solid oxide fuel cell system according to claim 16,
wherein the condensed water circulating passage includes:
a heat exchanger bypass passage configured to circulate the condensed water such that the condensed water does not flow through the condensed wateroff-gas heat exchanger; and
a second switch configured to perform switching between circulation of the condensed water through the condensed wateroff-gas heat exchanger and circulation of the condensed water through the heat exchanger bypass passage.
27. The solid oxide fuel cell system according to claim 16,
wherein the condensed water circulating passage includes:
a humidifier bypass passage configured to circulate the condensed water such that the condensed water does not flow through the humidifier; and
a third switch configured to perform switching between circulation of the condensed water through the humidifier and circulation of the condensed water through the humidifier bypass passage.
28. The solid oxide fuel cell system according to claim 14, further comprising:
an ion concentration detector configured to detect an ion concentration of the condensed water stored in the condensed water tank;
a notification unit; and
a control unit configured to cause the notification unit to output an alarm based on a result of detection of the ion concentration detector.
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 binding update method for updating binding information for enabling route optimization between a first mobile terminal and a second mobile terminal as a correspondent terminal of the first mobile terminal, and
when the first mobile terminal has the binding information on the second mobile terminal, the method comprising the steps of:
causing the first mobile terminal to send the second mobile terminal a first pair of messages as messages including predetermined information on the first mobile terminal to acquire predetermined information on the second mobile terminal from the second mobile terminal;
causing the second mobile terminal to send the first mobile terminal a second pair of messages including the predetermined information on the second mobile terminal;
causing the first mobile terminal to send the second mobile terminal a third message to which authentication information is added, the authentication information generated based on the predetermined information on the second mobile terminal included in the second pair of messages;
causing the second mobile terminal to send the first mobile terminal a fourth message as a message including response information to the third message and to which authentication information is added, the authentication information generated based on the predetermined information on the first mobile terminal, and to update the binding information when the authentication information from the first mobile terminal is valid; and
causing the first mobile terminal to update the binding information when the authentication information added to the fourth message from the second mobile terminal is valid.
2. The binding update method according to claim 1, wherein
the second mobile terminal sends the first mobile terminal the predetermined information on the first mobile terminal by including the predetermined information in the second pair of messages, and
the first mobile terminal sends the second mobile terminal the predetermined information on the first mobile terminal included in the second pair of messages by including the predetermined information on the first mobile terminal in the third message.
3. The binding update method according to claim 2, wherein the second mobile terminal sends the predetermined information on the first mobile terminal by including the predetermined information on the first mobile terminal in the second pair of messages in such a format that the predetermined information on the first mobile terminal can be decoded by only the second mobile terminal.
4. The binding update method according to claim 1, wherein
the predetermined information on the first mobile terminal is a token (Token) generated based on a home address and a care-of address (CoA) of the second mobile terminal,
the predetermined information on the second mobile terminal is a token (Token) generated based on a home address and a care-of address (CoA) of the first mobile terminal,
the first pair of messages are messages for requesting the second mobile terminal to start a home address test (Home Test Init) and a care-of address test (Care-Of Test Init),
the second pair of messages are a HoT message and a CoT message to respond to the first pair of messages,
the third message is a binding update message to the second mobile terminal, and
the fourth message is a binding update message to the first mobile terminal.
5. A mobile terminal used by a binding update method for updating binding information for enabling route optimization between the mobile terminal and a correspondent terminal as a communication partner of the mobile terminal, and
when the mobile terminal has the binding information on the correspondent terminal, the mobile terminal comprising:
message creation means for creating a first pair of messages as messages including predetermined information on the mobile terminal to acquire predetermined information on the correspondent terminal from the correspondent terminal;
transmitting means for sending the generated first pair of messages to the correspondent terminal;
receiving means for receiving, from the correspondent terminal, a second pair of messages including the predetermined information on the correspondent terminal;
authentication information generating means for generating authentication information based on the received predetermined information on the correspondent terminal; and
updating means for updating the binding information, wherein
the message creation means creates a third message to which the authentication information generated by the authentication information generating means is added,
the transmitting means sends the generated third message to the correspondent terminal, and
the updating means determines whether authentication information as information received through the receiving means and generated by the correspondent terminal based on the predetermined information on the mobile terminal is valid, and if valid, the updating means updates the binding information.
6. A mobile terminal used by a binding update method for updating binding information for enabling route optimization between the mobile terminal and a correspondent terminal as a communication partner of the mobile terminal, the mobile terminal comprising:
receiving means for receiving a first pair of messages as messages including predetermined information on the correspondent terminal to acquire predetermined information on the mobile terminal from the mobile terminal;
message creation means for creating a second pair of messages including the predetermined information on the mobile terminal;
transmitting means for sending the correspondent terminal the generated second pair of messages;
authentication information generating means for generating authentication information based on the predetermined information on the correspondent terminal received through the receiving means; and
updating means for updating the binding information when authentication information as information received through the receiving means and generated by the correspondent terminal based on the predetermined information on the mobile terminal is valid, wherein
the message creation means creates a third message to which the authentication information generated by the authentication information generating means is added, and
the transmitting means sends the generated third message to the correspondent terminal.
7. The mobile terminal according to claim 5, wherein the message creation means creates the third message including the predetermined information on the mobile terminal included in the second pair of messages.
8. The mobile terminal according to claim 6, wherein the message creation means creates the second pair of messages including the predetermined information on the correspondent terminal included in the first pair of messages.
9. The mobile terminal according to claim 7, wherein the message creation means includes the predetermined information on the correspondent terminal in the third message in such a format that the predetermined information on the correspondent terminal can be decoded by only the mobile terminal.
10. The mobile terminal according to claim 8, wherein the message creation means includes the predetermined information on the correspondent terminal in the second pair of messages in such a format that the predetermined information on the correspondent terminal can be decoded by only the mobile terminal.
11. The mobile terminal according to claim 5, wherein
the predetermined information on the mobile terminal is a token (Token) generated based on a home address and a care-of address (CoA) of the correspondent terminal,
the predetermined information on the correspondent terminal is a token (Token) generated based on a home address and a care-of address (CoA) of the mobile terminal,
the first pair of messages are messages for requesting the correspondent terminal to start a home address test (Home Test Init) and a care-of address test (Care-Of Test Init),
the second pair of messages are a HoT message and a CoT message to respond to the first pair of messages, and
the third message is a binding update message to the correspondent terminal.
12. The mobile terminal according to claim 6, wherein
the predetermined information on the correspondent terminal is a token (Token) generated based on a home address and a care-of address (CoA) of the mobile terminal,
the predetermined information on the mobile terminal is a token (Token) generated based on a home address and a care-of address (CoA) of the correspondent terminal,
the first pair of messages are messages for requesting the mobile terminal to start a home address test (Home Test Init) and a care-of address test (Care-Of Test Init),
the second pair of messages are a HoT message and a CoT message to respond to the first pair of messages, and
the third message is a binding update message to the correspondent terminal.
13. A binding update method for updating binding information for enabling route optimization between a first mobile terminal and a second mobile terminal as a correspondent terminal of the first mobile terminal, and
when the first mobile terminal has the binding information on the second mobile terminal, the method comprising the steps of:
causing the first mobile terminal to send the second mobile terminal a first pair of messages as messages including predetermined information on the first mobile terminal to acquire predetermined information on the second mobile terminal from the second mobile terminal;
causing the second mobile terminal to send the first mobile terminal a second pair of messages including the predetermined information on the first mobile terminal and the predetermined information on the second mobile terminal;
causing the first mobile terminal to send the second mobile terminal a third message to which authentication information is added, the predetermined information on the first mobile terminal and the authentication information generated based on the predetermined information on the second mobile terminal included in the second pair of messages;
causing the second mobile terminal to send the first mobile terminal a fourth message as a message including response information to the third message and to which authentication information is added, the authentication information generated based on the predetermined information on the first mobile terminal, and to update the binding information when the authentication information from the first mobile terminal is valid; and
causing the first mobile terminal to update the binding information when the authentication information added to the fourth message from the second mobile terminal is valid, wherein
the predetermined information on the first mobile terminal is a token (Token) generated based on a home address and a care-of address (CoA) of the second mobile terminal,
the predetermined information on the second mobile terminal is a token (Token) generated based on a home address and a care-of address (CoA) of the first mobile terminal,
the first pair of messages are messages for requesting the second mobile terminal to start a home address test (Home Test Init) and a care-of address test (Care-Of Test Init),
the second pair of messages are a HoT message and a CoT message to respond to the first pair of messages,
the third message is a binding update message to the second mobile terminal, and
the fourth message is a binding update message to the first mobile terminal.
14. The binding update method according to claim 13, wherein the second mobile terminal sends the predetermined information on the first mobile terminal by including the predetermined information on the first mobile terminal in the second pair of messages in such a format that the predetermined information on the first mobile terminal can be decoded by only the second mobile terminal.
15. A mobile terminal used by a binding update method for updating binding information for enabling route optimization between the mobile terminal and a correspondent terminal as a communication partner of the mobile terminal, and
when the mobile terminal has the binding information on the correspondent terminal, the mobile terminal comprising:
message creation means for creating a first pair of messages as messages including predetermined information on the mobile terminal to acquire predetermined information on the correspondent terminal from the correspondent terminal;
transmitting means for sending the generated first pair of messages to the correspondent terminal;
receiving means for receiving, from the correspondent terminal, a second pair of messages including the predetermined information on the mobile terminal and the predetermined information on the correspondent terminal;
authentication information generating means for generating authentication information based on the received predetermined information on the correspondent terminal; and
updating means for updating the binding information, wherein
the message creation means creates a third message to which the authentication information generated by the authentication information generating means and the predetermined information on the mobile terminal are added,
the transmitting means sends the generated third message to the correspondent terminal, and
the updating means determines whether authentication information as information received through the receiving means and generated by the correspondent terminal based on the predetermined information on the mobile terminal is valid, and if valid, the updating means updates the binding information, wherein
the predetermined information on the mobile terminal is a token (Token) generated based on a home address and a care-of address (CoA) of the correspondent terminal,
the predetermined information on the correspondent terminal is a token (Token) generated based on a home address and a care-of address (CoA) of the mobile terminal,
the first pair of messages are messages for requesting the correspondent terminal to start a home address test (Home Test Init) and a care-of address test (Care-Of Test Init),
the second pair of messages are a HoT message and a CoT message to respond to the first pair of messages, and
the third message is a binding update message to the correspondent terminal.
16. The mobile terminal according to claim 15, wherein the message creation means includes the predetermined information on the correspondent terminal in the third message in such a format that the predetermined information on the correspondent terminal can be decoded by only the mobile terminal.
17. A mobile terminal used by a binding update method for updating binding information for enabling route optimization between the mobile terminal and a correspondent terminal as a communication partner of the mobile terminal, the mobile terminal comprising:
receiving means for receiving a first pair of messages as messages including predetermined information on the correspondent terminal to acquire predetermined information on the mobile terminal from the mobile terminal;
message creation means for creating a second pair of messages including the predetermined information on the mobile terminal and the predetermined information on the correspondent terminal;
transmitting means for sending the correspondent terminal the generated second pair of messages;
authentication information generating means for generating authentication information based on the predetermined information on the correspondent terminal received through the receiving means; and
updating means for updating the binding information when authentication information as information received through the receiving means and generated by the correspondent terminal based on the predetermined information on the mobile terminal is valid, wherein
the message creation means creates a third message to which the authentication information generated by the authentication information generating means is added, and
the transmitting means sends the generated third message to the correspondent terminal, wherein
the predetermined information on the correspondent terminal is a token (Token) generated based on a home address and a care-of address (CoA) of the mobile terminal,
the predetermined information on the mobile terminal is a token (Token) generated based on a home address and a care-of address (CoA) of the correspondent terminal,
the first pair of messages are messages for requesting the mobile terminal to start a home address test (Home Test Init) and a care-of address test (Care-Of Test Init),
the second pair of messages are a HoT message and a CoT message to respond to the first pair of messages, and
the third message is a binding update message to the correspondent terminal.
18. The mobile terminal according to claim 17, wherein the message creation means includes the predetermined information on the correspondent terminal in the second pair of messages in such a format that the predetermined information on the correspondent terminal can be decoded by only the mobile terminal.