Industrial_Heating

HDTI Reverse Brayton High Temperature Heat-Pumps

High Temperature Heat Pumps (HTHPs)
are promising for industrial process heating and electrification, replacing boilers and other fossil fuel-driven devices.
Upgrade low-grade waste heat
to process-level temperatures, typically >150 °C (High-Temperature) or even up to >500 °C (Ultra-High-Temperature).
Reverse Brayton Cycle
offers simple layouts for high temperatures at CoPs of 1.5...>2.0 (depending on Source temperature and temperature lift) using mature technology.
Air as working fluid
can achieve much higher temperatures >500 °C. Without phase change thermodynamics are not limiting the achievable temperatures.
Capex Minimisation
Cost optimised system design for low investment costs allowing a fast industry acceptance and market penetration.

Reverse Brayton Cycle System (1-2) compression, (2-3) heat rejection, (3-4) expansion

Reverse Brayton Cycle

In the reverse Brayton cycle considered the working fluid is compressed (1-2) by the compressor stage of a rotating turbomachine employing a hybrid drive, i.e. by turbine expansion (T) and by the electric motor (EM) attached on a single shaft; the compressed hot gases then flow through the heat exchanger (HEX), reducing their temperature by rejecting heat (2-3) to the process fluid. Finally, the fluid expands (3-4) through the turbine stage (T), generating part of the power necessary to drive the compressor, before being exhausted (considering an open loop system such as shown in Figure 1).

What We Offer

HDTI provides comprehensive support across the entire development process from early concept feasibility to full product maturity and plant optimisation. We combine engineering expertise with deep system understanding to help you achieve maximum performance and reliability.

Plant Matching

Achieving optimum heat output and efficient operation of your heat pump requires an accurate understanding of your plant's characteristics. We ensure perfect system alignment so your equipment performs at its best from day one.

Component and System Development

Whether it's the development of the turbocharger core or the design of a complete heat-pumo system, we deliver tailored solutions for your specific application. Our engineering approach ensures high performance, seamless integration and long-term reliability.

Plant Optimisation

If your heat pump is not performing as intended, we help you identify the root cause and implement effective improvements. From diagnostics to targeted adjustments, we restore full efficiency and optimize system behaviour.

Industries

Food Industry

Plug-and-play replacement of fossil-fuel powered equipment like ovens or steam boilers by high-temperature-heat-pumps.

Hydrogen Production

Reducing the energy demand of hydrogen production in hot steam electrolyzers or ammonia crackers.

Waste Heat Recovery

Upgrading of low-grade thermal energy to industrial demands. Cooling power as byp-product.

Pulp- and Paper

Decarbonisation of industrial drying processes using HDTI high-temperature-heat-pumps.

HDTI Focus

We are acting as development leader offering engineering services for integrating High-Temperature Heat Pumps into plant operation. Working as developer and supplier of the turbomachinery unit used in Reverse Brayton Cycle High-Temperature Heat Pumps we have a strong focus on minimising CAPEX and are moving towards becoming the HTHP supplier. Contact us for more info.

Decarbonising Industrial Heating

HDTI Reverse Brayton High Temperature Heat-Pumps​