Device of high-temperature solar turbine power generation with thermal energy storage

Patent metadata

Field	Value
Publication number	US-10494996-B2
Application number	US-201715587524-A
Country	US
Kind code	B2
Filing date	May 5, 2017
Priority date	Aug 12, 2016
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

Abstract

A device of high-temperature solar gas turbine power generation with thermal energy storage includes a combustion chamber, a solar receiver, a thermochemical energy storage tank, a triple valve A and a triple valve B. The thermochemical energy storage tank has a high-temperature side and a low-temperature side. One outlet of the triple valve A is connected to the compressed air inlet of the solar receiver, and the other outlet is connected to the inlet of the triple valve B. One outlet of the triple valve B is connected to the low-temperature side of the thermochemical energy storage tank, and the other outlet is connected to the inlet of the combustion chamber.

First claim

We claim:

1. A device of high-temperature solar gas turbine power generation with thermal energy storage, comprising:
a combustion chamber, a solar receiver, a thermochemical energy storage tank, a triple valve A, and a triple valve B, wherein,
the thermochemical energy storage tank has a high-temperature side and a low-temperature side;
one outlet of the triple valve A is connected to a compressed air inlet of the solar receiver and another outlet is connected to an inlet of the triple valve B; one outlet of the triple valve B is connected to the low-temperature side of the thermochemical energy storage tank, and another outlet is connected to an inlet of the combustion chamber;
a compressed air outlet of the solar receiver is connected to the high-temperature side of the thermochemical energy storage tank and the inlet of the combustion chamber; the low-temperature side of the thermochemical energy storage tank is also connected to the inlet of the combustion chamber;
the device comprises a first flow path along which air enters the solar receiver through the triple valve A to be heated to higher temperature, after which one part of the air from the solar receiver enters the thermochemical energy storage tank, flows through each layer of thermochemical energy storage materials from the high-temperature side to the low-temperature side, mixes with the other part of the air and then enters the combustion chamber to assist combustion; and
the device comprises a second flow path along which air enters the thermochemical energy storage tank through the triple valve A and the triple valve B, flows through each layer of thermochemical energy storage materials from the low-temperature side to the high-temperature side, being heated by heat released from the thermochemical energy storage tank, and then enters the combustion chamber to assist combustion.

2. The device of high-temperature solar gas turbine power generation with thermal energy storage according to claim 1 , wherein,
air receiver tubes are arranged in the solar receiver and the thermochemical energy storage materials are filled around the air receiver tubes.

3. The device of high-temperature solar gas turbine power generation with thermal energy storage according to claim 2 , wherein, a bottom part of the air receiver tubes is filled with the thermochemical energy storage materials; and
the air receiver tubes are spirally distributed in the solar receiver, or the air receiver tubes are radially distributed from a center of the solar receiver, or the air receiver tubes are distributed along a circumferential direction of the solar receiver.

4. The device of high-temperature solar gas turbine power generation with thermal energy storage according to claim 1 , further comprising a turbine and a recuperator, wherein,
the recuperator has a hot fluid side and a cold fluid side;
an outlet of the combustion chamber is connected to an inlet of the turbine and an outlet of the turbine is connected to the hot fluid side inlet of the recuperator;
the cold fluid side outlet of the recuperator is connected to the inlet of the triple valve A; and
exhaust gas from the turbine enters the hot fluid side of the recuperator to heat the air flowing through the cold fluid side of the recuperator.

5. The device of high-temperature solar gas turbine power generation with thermal energy storage according to claim 4 , further comprising a waste heat utilization device, wherein,
the waste heat utilization device is connected to the hot fluid side outlet of the recuperator; and
exhaust gas from the turbine enters the waste heat utilization device with waste heat of exhaust gas further recycled after exhaust gas flows through the hot fluid side of the recuperator.

6. The device of high-temperature solar gas turbine power generation with thermal energy storage according to claim 5 , further comprising a blower pipe and an induced draft fan, wherein,
the solar receiver is open; and
one end of the blower pipe is connected to the solar receiver and the other end is connected to an inlet of the waste heat utilization device; the induced draft fan is arranged at an outlet of the waste heat utilization device.

7. The device of high-temperature solar gas turbine power generation with thermal energy storage according to claim 4 , further comprising a compressor and generator, wherein,
an outlet of the compressor is connected to the cold fluid side inlet of the recuperator and compressed air is transported into the cold fluid side of the recuperator; and
the generator is connected to the compressor and the compressor is connected to the turbine.

8. The device of high-temperature solar gas turbine power generation with thermal energy storage according to claim 1 , further comprising a throttle valve, wherein,
the solar receiver is connected to the inlet of the combustion chamber through the throttle valve.

9. The device of high-temperature solar gas turbine power generation with thermal energy storage according to claim 1 , wherein,
at least two kinds of thermochemical energy storage materials are arranged in the thermochemical energy storage tank and a reaction equilibrium temperature of the thermochemical energy storage materials successively decreases from the high-temperature side to the low-temperature side of the thermochemical energy storage tank.

10. The device of high-temperature solar gas turbine power generation with thermal energy storage according to claim 9 , wherein,
the thermochemical energy storage materials form several thermochemical energy storage layers from the high-temperature side to the low-temperature side and there are intervals between the thermochemical energy storage layers.

11. A device of high-temperature solar gas turbine power generation with thermal energy storage, comprising:
a combustion chamber, a solar receiver, a thermochemical energy storage tank, a triple valve A, and a triple valve B, wherein,
the thermochemical energy storage tank has a high-temperature side and a low-temperature side;
one outlet of the triple valve A is connected to a compressed air inlet of the solar receiver and another outlet is connected to an inlet of the triple valve B; one outlet of the triple valve B is connected to the low-temperature side of the thermochemical energy storage tank, and another outlet is connected to an inlet of the combustion chamber;
a compressed air outlet of the solar receiver is connected to the high-temperature side of the thermochemical energy storage tank and the inlet of the combustion chamber; the low-temperature side of the thermochemical energy storage tank is also connected to the inlet of the combustion chamber.

Assignees

• Univ Zhejiang

Inventors

• Xiao Gang
• Zhou Xin
• Liu Huanlei
• Chen Jinli
• Yang Tianfeng
• Ni Mingjiang
• Luo Zhongyang
• Cheng Leming
• Gao Xiang
• Cen Kefa
• Fang Mengxiang
• Zhou Jinsong
• Shi Zhenglun
• Wang Qinhui
• Wang Shurong
• Yu Chunjiang
• Wang Tao
• Zheng Chenghang

Classifications

• F02C6/14

  Gas-turbine plants having means for storing energy, e.g. for meeting peak loads · CPC title

• F02C1/05 Primary

  characterised by the type or source of heat, e.g. using nuclear or solar energy · CPC title

• F02C7/042

  having variable geometry · CPC title

• F05D2220/70

  in combination with · CPC title

• F03G6/045

  by producing an updraft of heated gas or a downdraft of cooled gas, e.g. air driving an engine · CPC title