Vatsal Shah, Brendan Daly
Industrial heat pumps (IHPs) are increasingly recognized as a critical technology for decarbonizing process heat in industries such as food and beverage, chemicals, and pharmaceuticals. However, commercially available IHP solutions are typically limited to maximum heating temperatures of around 90°C, restricting their applicability in processes requiring steam. This paper presents a breakthrough high-temperature industrial heat pump system capable of delivering leaving water temperatures in the range of 120-140°C, addressing a significant gap in the market. The system features a high-pressure, low-displacement single screw compressor operating with ammonia (R717), a natural refrigerant known for its excellent thermodynamic properties and zero global warming potential. The high-temperature heat pump offers flexibility to adapt to a wide range of thermal lift requirements while optimizing energy efficiency. A standout feature is its ability to generate low pressure steam, eliminating the need for vacuum operation and ensuring seamless integration with standard industrial steam systems. For applications requiring even higher temperatures, the design supports optional integration with mechanical vapor recompression (MVR) technology. The heat pump is Conformité Européenne - Pressure Equipment Directive (CE-PED) compliant and features a compact design, enabling straightforward installation and integration into existing industrial setups. This paper outlines the design principles, component selection, and thermodynamic performance of the system, along with preliminary performance data demonstrating high COPs within industrial operating conditions. The presented technology represents a major advancement in sustainable thermal energy systems, offering industrial users a cost-effective and climate-friendly alternative to fossil fuel-based steam generation for high-temperature heat applications.