公开(公告)号：US20240209757A1

公开(公告)日：2024-06-27

申请号：US18553951

申请日：2022-04-05

Applicant: INDIAN INSTITUTE OF SCIENCE

Inventor： Pramod Kumar ,  Siddhant Karmarkar

IPC: F01K25/10 ,  F01K7/32

CPC classification number: F01K25/103 ,  F01K7/32

Abstract: A system for generating mechanical power using super critical carbon dioxide (sCO2) is disclosed. The system includes at least one expansion cylinder (5) housing a first piston (5a) and at least one compression cylinder (6) housing a second piston (6a). A first heat exchanger (C) is fluidically connected to the compression cylinder (6) and the expansion cylinder (5), and a second heat exchanger (H) is fluidically connected to the compression cylinder (6) and the expansion cylinder (5). The first heat exchanger (C) cools the CO2 received from the expansion cylinder (5), and the compression cylinder (6) pressurizes the CO2 cooled by the first heat exchanger (C). The second heat exchanger (H) heats the CO2 from the compression cylinder (6) and supplies to the expansion cylinder (5). The high temperature and high-pressure CO2 drives the first piston (5a) housed inside the expansion cylinder (5) to generate mechanical energy.

公开(公告)号：US12270319B2

公开(公告)日：2025-04-08

申请号：US18553951

申请日：2022-04-05

Applicant: INDIAN INSTITUTE OF SCIENCE

Inventor： Pramod Kumar ,  Siddhant Karmarkar

IPC: F01K25/10 ,  F01K7/32

Abstract: A system for generating mechanical power using super critical carbon dioxide (sCO2) is disclosed. The system includes at least one expansion cylinder (5) housing a first piston (5a) and at least one compression cylinder (6) housing a second piston (6a). A first heat exchanger (C) is fluidically connected to the compression cylinder (6) and the expansion cylinder (5), and a second heat exchanger (H) is fluidically connected to the compression cylinder (6) and the expansion cylinder (5). The first heat exchanger (C) cools the CO2 received from the expansion cylinder (5), and the compression cylinder (6) pressurizes the CO2 cooled by the first heat exchanger (C). The second heat exchanger (H) heats the CO2 from the compression cylinder (6) and supplies to the expansion cylinder (5). The high temperature and high-pressure CO2 drives the first piston (5a) housed inside the expansion cylinder (5) to generate mechanical energy.

公开(公告)号：US12209553B2

公开(公告)日：2025-01-28

申请号：US18259956

申请日：2021-12-28

Applicant: INDIAN INSTITUTE OF SCIENCE

Inventor： Pramod Kumar ,  Siddhant Karmarkar ,  Vijay Biradar

IPC: F02G1/044 ,  F01B7/16 ,  F01B31/08 ,  F01K25/10

Abstract: The present disclosure relates to an engine (100) including a cylinder (102) that is filled with carbon dioxide. A first piston (104) is slidably configured inside the cylinder (102) and being configured to form a first cylinder (108) with a first end (130) of the cylinder (102). A second piston (106) is slidably configured inside the cylinder (102) and being configured to form a second cylinder (110) with a second end (132) of the cylinder (102). A heater (112) is circumferentially disposed around the first cylinder (108) and the first piston (104) is configured to expand a hot carbon dioxide received inside the first cylinder (108) from the heater (112). A cooler (116) is circumferentially disposed around the second cylinder (110) and second piston (104) is configured to compress a cold carbon dioxide received inside the second cylinder (110) from the cooler (116).