Humid air turbine power, water extraction, and refrigeration cycle

Patent metadata

Field	Value
Publication number	US-10731554-B2
Application number	US-201816129254-A
Country	US
Kind code	B2
Filing date	Sep 12, 2018
Priority date	Sep 12, 2017
Publication date	Aug 4, 2020
Grant date	Aug 4, 2020

Abstract

Various embodiments relate to combined heat and power (CHP) systems. A CHP system can include a turbine system, a turbocharger system, and a refrigeration system. The refrigeration system can receive combustion products from the turbine system and compressed air from the turbocharger system. The refrigeration system can cool the combustion products and the compressed air to generate a cooled combustion product mixture that is provided to the turbine system. The turbine system can further comprise a fuel cell. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.

First claim

Therefore, the following is claimed:

1. A combined heat and power (CHP) system, comprising:
a turbine system comprising a high pressure compressor, a high pressure turbine, a combustor, and a recuperator, wherein the turbine system provides a combustion product stream;
a fuel cell intermediate and in fluid communication with the recuperator and the combustor of the turbine system;
a turbocharger system comprising a low pressure compressor and a low pressure turbine, wherein the turbocharger system receives at least a portion of the combustion product stream from the turbine system and provides a compressed air stream; and
a refrigeration system comprising a hot gas heat exchanger and a cold gas heat exchanger in fluid communication therewith, wherein the refrigeration system receives at least a portion of the combustion product stream from the turbine system and at least a portion of the compressed air stream from the turbocharger system;
wherein the refrigeration system combines and cools the combustion product stream and the compressed air stream to generate a cooled combustion product mixture that is provided to the turbine system; and
wherein the refrigeration system further generates steam that is provided to the turbine system.

2. The CHP system of claim 1 , wherein the cooled combustion product mixture is provided to the high pressure compressor of the turbine system.

3. The CHP system of claim 1 , wherein the steam from the refrigeration system is provided to the recuperator of the turbine system.

4. The CHP system of claim 1 , wherein the combustion product stream from the turbine system is received at the hot gas heat exchanger of the refrigeration system.

5. The CHP system of claim 1 , further comprising a warm gas heat exchanger that is associated with the refrigeration system, wherein the warm gas heat exchanger receives a mixture of the combustion product stream from the turbine system and the compressed air stream from the turbocharger system, and cools the mixture to provide the cooled combustion product mixture.

6. The CHP system of claim 1 , wherein the CHP system generates electrical energy and thermal energy, and wherein at least a portion of the thermal energy generated by the CHP system is wasted or not utilized.

7. The CHP system of claim 1 , wherein the fuel cell wherein the fuel cell receives a compressed combustion gas mixture from the recuperator and a fuel.

8. The CHP system of claim 1 , wherein the fuel cell generates a stream comprising hot depleted oxidizer and fuel, that is provided to the combustor of the turbine system.

9. A combined heat and power (CHP) system, comprising:
a turbine system;
a turbocharger system; and
a refrigeration system;
wherein the turbine system generates a combustion product, and the turbocharger system generates a compressed air stream;
wherein the refrigeration system receives at least a portion of the combustion product and the compressed air stream, and combines and cools the combustion products and the compressed air to generate a cooled combustion product mixture that is provided to the turbine system; and
wherein a fuel cell is in fluid communication with the turbine system, wherein the fuel cell receives a compressed combustion qas mixture from the turbine system and a fuel and generates electrical power.

10. The CHP system of claim 9 , wherein the cooled combustion product mixture is provided to a high pressure compressor of the turbine system.

11. The CHP system of claim 9 , wherein the refrigeration system further provides water in at least one of liquid or gaseous form to a recuperator of the turbine system.

12. The CHP system of claim 9 , wherein the combustion product from the turbine system is received at a hot gas heat exchanger of the refrigeration system.

13. The CHP system of claim 9 , further comprising a warm gas heat exchanger that is associated with the refrigeration system, wherein the warm gas heat exchanger cools a mixture of the combustion product from the turbine system and the compressed air.

14. The CHP system of claim 9 , wherein the CHP system generates electrical energy and thermal energy, and wherein at least a portion of the thermal energy generated by the CHP system is wasted or not utilized.

15. The CHP system of claim 9 , wherein the fuel cell generates a stream comprising hot depleted oxidizer and fuel, that is provided to the combustor of the turbine system.

16. A method, comprising:
using a turbocharger system of a combined heat and power (CHP) system to generate compressed air;
combining a combustion product from a turbine system with compressed air from the turbocharger system to provide a mixture of combustion products and compressed air;
cooling the mixture of combustion products and compressed air using a refrigeration system to generate a cooled combustion product mixture;
compressing the cooled combustion product mixture in a high pressure compressor of the turbine system, resulting in a compressed combustion product mixture;
heating the compressed combustion product mixture in a recuperator of the turbine system;
introducing the heated and compressed combustion product stream to a fuel cell system that is associated with the turbine system; and
generating electrical power using the fuel cell system.

17. The method of claim 16 , further comprising:
generating water using a refrigeration system of the combined heat and power (CHP) system;
heating the water using the refrigeration system to generate steam; and
providing the steam to a recuperator of a turbine system for the CHP system.

18. The method of claim 17 , wherein the method further comprises:
using a cold gas heat exchanger of the refrigeration system to generate the water;
providing the water to a warm gas heat exchanger that is associated with the refrigeration system and using the warm gas heat exchanger to heat the water;
providing the heated water to a gas heat exchanger that is associated with the refrigeration system and using the hot gas heat exchanger to generate the steam.

19. The method of claim 17 , wherein the refrigeration system comprises a vapor absorption system.

Assignees

• Univ Florida

Inventors

• Lear Jr William E

Classifications

• Y02E60/50

  Fuel cells · CPC title

• H01M8/04111

  using a compressor turbine assembly · CPC title

• F25B27/02

  using waste heat, e.g. from internal-combustion engines · CPC title

• F02C6/18

  using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants (using waste heat as source of energy for refrigeration plants F25B27/02; using the waste heat of a gasturbine for steam generation or in a steam cycle see F01K23/10) · CPC title

• H01M2250/405

  Cogeneration of heat or hot water · CPC title