High-Efficiency External Shell & Tube Heat Exchanger Technology by Ecotherm (Water/Steam Operation)

Ecotherm’s external shell & tube heat exchanger technology can operate with two primary heat sources—water systems or steam systems—and a secondary connection for water. This high-efficiency heat transfer solution, combining steam/water or water/water operation, is ideal for heat recovery from waste heat sources and preheating using low-temperature heat pumps.

This technology enables maximum utilization of available energy sources while ensuring the highest level of hygienic performance.

Industrial Hybrid Hot Water Tank – EHHE Model

The EHHE industrial hot water tank utilizes Ecotherm’s high-efficiency external shell & tube heat exchanger technology and can operate in both water/water and steam/water configurations.

The EHHE model is designed with two different primary heat sources and one secondary connection. For example:

• Waste heat or a low-temperature heat pump can be used for preheating
• A primary source such as an industrial hot water boiler or steam boiler is used to achieve the final temperature

This multi-stage heating approach ensures optimal system performance and energy efficiency.

Benefits of External Shell & Tube Heat Exchanger Technology

With a design integrating two external tube heat exchangers, the EHHE model enables multi-stage water heating, maximizing the use of available heat sources.

Key advantages include:

• Maximum hygiene: No stagnation of water below 60°C, preventing the growth of Legionella bacteria
• Thermal disinfection capability: The second heat exchanger can raise water temperature above 70°C for sterilization
• High energy efficiency through optimized heat transfer
• Flexible integration with multiple heat sources

Applications of External Shell & Tube Heat Exchanger Technology

Thanks to its high heat transfer efficiency, anti-scaling performance, and self-cleaning capability of the heat exchanger, combined with minimal heat loss from sheep wool insulation, this technology has been widely applied in:

• Hospitals
• Schools
• Hotels
• Industrial plants

Ecotherm has successfully delivered these solutions to numerous projects worldwide.

In 2011, Ecotherm installed 31 high-capacity commercial hot water tanks with a total capacity of 6,920 kW at the Sheikh Jaber Al Ahmad Al Jaber Al Sabah Hospital in Kuwait—the largest hospital in the Middle East—along with additional steam system solutions.

This is just one of thousands of projects demonstrating Ecotherm’s strong global presence and engineering excellence.

Conclusion

Ecotherm’s high-efficiency heat transfer technology, operating with water or steam and integrated into patented industrial hot water tanks, represents a significant innovation in hot water production for hotels, hospitals, commercial buildings, and industrial facilities.

ECOTHERM’s turnkey solutions for centralized hot water and steam systems are designed to be space-saving, highly efficient, and cost-effective, with full customization based on each project’s requirements.

PGTECH, the authorized representative of Ecotherm (Austria) in Vietnam, provides complete solutions for centralized hot water and steam systems using advanced, safe, energy-efficient heat transfer technologies, including exclusive innovations unique to Ecotherm.

PGTECH GROUP LIMITED – Authorized Distributor of HVAC System Products in Vietnam and Regional Markets

News Editorial Board: PGTECH

Engineer: Manh Thang

PGTECH GROUP LIMITED

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