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Innovation and Research
E2Tech is constantly engaged in research and development in the field of heat pumps. Two recent scientific papers published in the AiCARR Journal and RCI present some of the technological solutions developed as part of E2Tech’s research activities.
The studies, based on experimental work, explore solutions aimed at improving the performance of heat pumps under demanding operating conditions and the efficiency of refrigeration systems.
Recognition for E2Tech's Innovation
E2Tech received the 2026 Technical Innovation Award in the HVAC/Plumbing category for its next-generation heat pump.
This award recognizes the innovative journey that led to the development of a technology born of years of research, design, and experimentation, with the goal of improving efficiency and performance in the heat pump sector.
This achievement highlights E2Tech's research and development efforts and the work dedicated to creating technological solutions designed to deliver high performance and reliability.
Plasma Treatments for Evaporative Batteries
One of the factors that can affect the efficiency of heat pumps under certain climatic conditions is the formation of frost on the evaporator coils. In this study, E2Tech tested surface treatments applied to aluminum fins, with the aim of limiting ice buildup and promoting heat transfer.
Through the analysis of the hydrophobicity of materials, a vacuum plasma treatment was developed that made it possible to obtain surfaces with superhydrophobic properties. Tests conducted on prototypes showed, under the test conditions considered, an increase in operating time between two defrost cycles and a reduction in efficiency losses associated with frost formation.
The results obtained indicate the potential of this solution to reduce the frequency of defrost cycles and the energy required to manage them, thereby helping to optimize the operation of the heat pump.
March
- Superhydrophobicity: helps limit ice buildup.
- Defrost Control: Longer interval between cycles under the tested conditions.
- Prototype testing: performance verified under test conditions.
Innovative Refrigeration Circuit for Residential Heat Pumps
One of the main obstacles to the efficient operation of heat pumps under extreme weather conditions is the formation of frost on the evaporator coils. In this study, E2Tech tested innovative surface treatments applied to aluminum fins, aimed at reducing ice buildup and improving heat transfer capacity. The goal of the research was to develop an advanced refrigeration cycle designed to maintain high levels of efficiency even at high supply temperatures and to enable, where design conditions and proper sizing allow, monovalent configurations without supplementary heat generators.
The new design, featuring a dual lamination valve system and a regenerative heat exchanger, was developed to promote operational stability and optimize the refrigeration cycle. One of the main innovations is the ability to operate with zero superheat at the evaporator coil outlet, which enhances heat exchange with the source and helps reduce the frequency of defrost cycles under expected operating conditions. Another key development involves the thermodynamic management of heat dissipated by the inverter, which is recovered and reintroduced into the refrigeration cycle, contributing to the system’s overall efficiency.
Laboratory tests and subsequent field tests demonstrated high performance levels, with COP and SCOP values verified under the specified test conditions.
March
- Double lamination: optimization of the refrigeration cycle.
- Heat Recovery: Support for Overheating Management.
- Verified performance: results evaluated through laboratory and field tests.