Gas-Water Type Heat Exchanger For Cooling The Gas Stream

We have just supplied a gas-water heat exchanger to a customer from Uruguay.

Here is the customer's request for quotation.

We produce synthetic fuels from green hydrogen and carbon dioxide captured from industrial boiler fumes.

We need a gas-water type heat exchanger for cooling the gas stream.

We designed the exchanger based on the following data:

Heat flow (cooling): 46,444 kg/h. (88% CO2, 12% H2) from 493°C to 250°C

Cooling flow: Water. No flow restrictions.

Inlet temperature: 21°C, outlet temperature: 90°C.

Outlet temperature: 90°C. .

Gas-to-water heat exchangers are devices used to cool airflow, typically in industrial applications. Their principle of operation involves transferring heat from a gas stream to water or other cooling media through heat exchange to lower the temperature of the gas. Below is key information about gas-water type heat exchangers:

Principle of operation:

1. Airflow: The main input to an gas-to-water type heat exchanger is a hot airflow, usually waste hot gases from an industrial process or exhaust air from an air handling system. The temperature of this hot gas stream is usually high and needs to be cooled down to meet process or environmental requirements.

2. Water or other cooling medium: Gas-to-water heat exchangers usually include a water or other cooling medium circulation system. This circulatory system cools the water or other liquid by delivering it to the heat exchanger.

3. Heat exchange: The core part of the heat exchanger is a heat transfer surface, which is located between the airflow and the water. As the hot air stream passes through the heat exchanger, it transfers heat to the water or liquid, causing the temperature of the air stream to decrease.

4. Cooling effect: Through heat exchange, the heat in the hot air stream is transferred to the water, warming the water and cooling the hot air stream at the same time. This causes the temperature of the hot air stream to be reduced to the desired range while transferring heat to the cooling medium.

5. Water Recirculation: The water or cooling medium in the heat exchanger is typically pumped back into the cooling equipment of the cooling system, such as a cooling tower or dry cooler, to be re-cooled and recycled.

Applications:

Air-to-water type heat exchangers are widely used in many fields, including some of the following application scenarios:

1. Industrial Waste Heat Recovery: Used to recover energy from waste hot gases in industrial processes to reduce energy waste.

2. Air handling systems: Used to cool exhaust air in air handling systems to improve system efficiency and reduce air temperature.

3. gas turbine cooling: used in power plants to cool exhaust air from gas turbines, increasing the efficiency of the energy system.

4. air-conditioning systems: used in commercial and industrial air-conditioning systems to cool air and provide a comfortable indoor environment.

5. Power Plant Cooling: used in power plants to cool power generation equipment and waste heat from the power generation process.

Advantages:

- Energy recovery: Air-to-water heat exchangers recover waste heat, thereby improving energy efficiency and sustainability.

- Temperature control: They effectively reduce the temperature of gas or air to meet process or environmental requirements.

- Adaptability: for many different applications and environmental conditions.

Gas-to-water type heat exchangers are key thermal management components in many industrial and commercial processes. They help to reduce energy consumption, improve efficiency, lower emissions and fulfil a wide range of temperature requirements.