SciTransfer
BHE · Project

High-Performance Thermo-Acoustic Engine to Replace Traditional Heat Pump Compressors

energyMarket-readyTRL 9

Imagine a heat pump that doesn't use a noisy, chemical-filled compressor. Instead, it uses sound waves to move heat, making it silent and cleaner. It works like a high-tech speaker for temperature, allowing old houses with traditional radiators to switch to green energy without expensive renovations.

By the numbers
50%
EU energy consumption attributed to heating and cooling
70%
Residential energy bill attributed to heating and cooling
2M
Heat pumps sold in 2021
7M
Gas boilers installed in 2021
15+
Years of R&D from TNO
The business problem

What needed solving

Traditional heat pumps are too expensive, noisy, and cannot provide the high temperatures required for older, poorly insulated homes, leading to a market where 7M gas boilers were installed in 2021 compared to only 2M heat pumps.

The solution

What was built

A patented thermo-acoustic heat pump engine and a corresponding mass production setup. A Minimal Viable Product (MVP) was also developed for customer validation.

Audience

Who needs this

Heat pump manufacturers (OEMs)HVAC system installersResidential energy retrofit companiesGreen building developers
Business applications

Who can put this to work

HVAC Manufacturing
enterprise
Target: Heat Pump OEM

If you are a heat pump manufacturer dealing with the limited efficiency of vapor compression, this project developed a thermo-acoustic engine that replaces the core. It allows your products to deliver high temperatures for older homes and removes HFC refrigerants.

Residential Construction
mid-size
Target: Housing Developer

If you are a developer dealing with the high cost and noise of installing heat pumps in residential projects, this project developed a silent, affordable engine. It makes heat pumps a viable replacement for gas boilers in both new and existing housing stocks.

Environmental Services
SME
Target: Green Energy Consultant

If you are a consultant dealing with the high global warming potential of HFC gases in heating systems, this project developed a technology that uses no HFC refrigerants. It enables a faster transition from fossil fuel heating to clean energy.

Frequently asked

Quick answers

How does this affect the cost for the end customer?

The technology is designed to be easier to produce and install, which reduces the overall cost for the end customer compared to traditional heat pumps.

Is the technology ready for industrial scale production?

Yes, the project specifically focused on the development of a mass production setup for the final market heat pump engines.

What is the IP status of the technology?

The project utilizes a disruptive patented technology based on thermo-acoustics, leveraging over 15 years of R&D from TNO.

How does it handle environmental regulations regarding refrigerants?

The system is designed to be environmentally clean as it does not use any HFC refrigerant gases with high global warming potential.

How is the technology integrated into existing products?

Based on available project data, the engine is designed in collaboration with OEMs to seamlessly replace the vapor compression core of any heat pump.

Consortium

Who built it

The project is led by a single Dutch SME, Blue Heart Energy BV, which maintains 100% industry ratio. This lean structure suggests a fast-track commercialization approach, supported by a multidisciplinary team of 15 people and a strategic knowledge transfer from TNO.

How to reach the team

Contact Blue Heart Energy BV in the Netherlands for B2B licensing and OEM integration.

Next steps

Talk to the team behind this work.

Contact us to explore integration of thermo-acoustic engines into your HVAC product line.