Heat Pump Solutions with Natural Refrigerants: Why PSHE Are Essential

Heat pump systems are rapidly shifting towards natural refrigerants, driven by rising energy costs and tighter regulations. But this transition also places new demands on system design. Plate & Shell Heat Exchangers (PSHE) meet these challenges with a combination of fully welded safety, sustainable performance and custom engineering – enabling reliable and future-ready heat pumps.

Heat Pump Solutions: Driving The Shift to Natural Refrigerants

The transition towards natural refrigerants is fundamentally reshaping heat pump technologies. Increasingly, alternatives such as Ammonia, CO₂ and Hydrocarbons are being adopted to meet evolving efficiency, safety and environmental sustainability requirements.

At the same time, many conventional synthetic refrigerants are being phased out. These substances are often classified as PFAS, also known as “forever chemicals”, which are harmful to human health, reproduction and the environment. In response, global regulatory developments are accelerating efforts to restrict and ultimately eliminate their use.

As a result, decision-makers across governments and multinational organisations are increasingly adopting alternative refrigerants as a long-term, sustainable approach to refrigeration and heat pump technologies at both commercial and industrial scale.

Plate & Shell Heat Exchangers have supported this transition for decades. Widely used across different heat sources and heat recovery duties, they provide a proven and reliable option for meeting evolving industry requirements.

Plate & Shell Heat Exchangers for Heat Pumps: Safety, Sustainability and Customised Performance

To meet the evolving demands of heat pump environments – particularly when using natural refrigerants – the choice of heat exchanger technology is critical. PSHE are specifically designed to address these requirements, combining safety, environmental compatibility and custom-engineered design.

Safety: Fully Welded Design for Demanding Heat Pump Applications

PSHE improve heat pump safety by using a fully welded, gasket-free design that minimises leakage risks and simplifies compliance.

Plate & Shell Heat Exchangers are built with a fully welded construction, ensuring that the refrigerant is completely enclosed within a sealed, pressure-resistant structure. This design simplifies plant safety classification and supports compliance with strict industrial requirements.

The absence of gaskets eliminates common leakage risks and reduces maintenance needs. As a result, these units offer a long service life and are practically maintenance-free. Their durable design withstands high pressures and temperature variations, making them highly suitable for challenging heat pump conditions.

In addition to reliability, they are easy to install, fully drainable and designed for efficient operation over a long period of time, contributing to a competitive total lifetime cost.

Sustainability: Supporting Natural Refrigerants and Environmental Performance

PSHE enable sustainable heat pump operation by supporting the use of natural refrigerants under demanding conditions.

As industries move away from PFAS-based refrigerants due to tightening legislation, PSHE technology offers a future-proof alternative that supports regulatory compliance and environmental responsibility.

This technology is particularly well suited for heat pump environments using alternative refrigerants such as Ammonia, CO₂ and Hydrocarbons. The fully welded construction is designed to handle high pressures and large temperature fluctuations, as well as toxic or flammable media, ensuring safe and reliable operation.
 

From a process perspective, these heat exchangers enable high efficiency through close approach temperatures, contributing to superior Coefficient of Performance (COP) in heat pumps. By combining robust construction with optimised heat transfer, PSHE support the transition towards more sustainable processes.

Custom-Made Solutions: Optimised for Every Heat Pump Application

Custom-engineered PSHE ensure optimal process alignment by matching exact operating conditions and system requirements.

Purpose-built Plate & Shell Heat Exchangers are designed with flexibility in mind, allowing each unit to be tailored to the heat pump’s pressure levels, temperature ranges and process requirements. This approach supports reliable operation across a wide range of industrial heat pump environments.

Vahterus Heat Exchanger Solutions for Heat Pump Applications Using Natural Refrigerants

Vahterus PSHE support a wide range of critical functions within industrial heat pumps, from heat recovery to phase change processes – improving efficiency, reliability and overall operation. Designed to perform effectively with natural refrigerants, the Vahterus portfolio includes:

• Desuperheaters
• Condensers
• Subcoolers
• Multi-condensers
• Evaporators
• Recuperators
• Steam generators

To save time, space and ultimately costs for our customers, Vahterus works closely with them to develop advanced combination units, such as multi-condensers, that integrate multiple functions into a single compact solution, reducing complexity, installation effort and overall system footprint.

Curious to Learn More?

The Vahterus Plate & Shell Heat Exchanger technology has consistently proven its capability to meet and exceed established technical requirements in demanding conditions. In heat pump environments – especially those using natural refrigerants – it provides stable and reliable operation where safety and long-term performance are essential.

Explore how PSHE can optimise your heat pump design with natural refrigerants – contact our experts below.