System Features

The power generation system uses direct expansion of geothermal ammonia steam to generate electricity, which solves the irreversible loss of heat generated by indirect heat transfer on the ground. All parts of the system in contact with ammonia steam are made of corrosion-resistant materials.

The pressure of the sealing fluid in the sealing system changes with the pressure inside the turbine. Under the premise of ensuring the sealing, the sealing pressure difference on the turbine side is the smallest and the leakage is the least.

Geothermal ultra-long gravity heat pipe ammonia steam direct drive geothermal power generation project
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This research project is a geothermal research project located in Xiongan, China, the main research content is the heat exchange performance of ultra-long gravity heat pipe in geothermal and the ammonia steam generation performance of heat pipe heat exchange. In this project, pure ammonia is used as the heat exchange medium, liquid pure ammonia is passed into the entrance of ultra-long gravity heat pipe, and under the action of gravity, it flows into the underground and underground high temperature geothermal heat exchange, and the liquid ammonia is sent out from the outlet of the heat pipe after heat absorption and gasification, and the high-pressure ammonia steam enters the high-speed ammonia turbine generator set to generate electricity. After the work is done, the lack of steam enters the condenser and is condensed into liquid by circulating cooling water and then enters the heat pipe entrance to complete the cycle. The ammonia gas direct drive geothermal generator set is the first set of geothermal ammonia steam direct drive generator set in China, which was successfully put into operation in March 2023.

The geothermal ammonia steam parameters in this project are as follows:

According to the site situation, the content of technical reform is:

This research project adds a set of high-speed ammonia turbine generator set with 13kW installed capacity.

13kW	10.4×10⁴kWh	35.26 tons	103.69 tons

■ Installed Power	■ Annual power output	■ Annual saving of standard coal	■ Annual CO₂ reduction

Project Process Drawing

Process flow chart of geothermal ammonia steam direct drive geothermal system

Geothermal ammonia steam turbine Layout

Retrofit Scheme

Unit layout

The motor is evenly mounted to the base frame with two stages of transmission. A single cantilever structure is adopted, wherein the central position of the transfer plate is connected with the end face of the motor through the bolt, and the top position is connected with the end face of the flange on the side of the turbine volute motor through the bolt.

Cold source system

This project uses circulating cooling water to cool ammonia vapor. On-site cooling tower and circulating water pump provide circulating cooling water for ammonia condenser.

Live Photo

Project Real Picture

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