Econotherm® is a leading UK based manufacturer of Heat Pipe Waste Heat Recuperators, Economisers, Pre-Heaters, Steam Generators and Steam Condensers. Our patented super conductor Heat Pipe technology is used in a wide range of applications across many diverse industrial sectors. The technology is renowned for being extremely robust and able to operate in many challenging heat recovery environments for the benefit of high energy users seeking to reduce ever increasing energy costs. The combination of a unique low cost manufacturing process and patented exchanger designs ensure that the many technical advantages of heat pipe exchangers are available to industrial users wishing to reduce running costs and carbon emissions.
Vulnerable to catastrophic single point failures
Many common failure modes -
Cold spot induced condensation leading to corrosion
Thin metal surface required for effective heat transfer, vulnerable to erosion and corrosion
Prone to rapid particulate fouling combined with difficulty to clean
Failure is always catastrophic and difficult to manage
Shell & Tube heat exchanger
Heat Pipe Heat
Simple, robust structures with built in multiple redundancy
Common failure modes eliminated -
Isothermal operation eliminates cold spots and condensation
Heat transfer not affected by wall thickness hence thicker walls typically 2.5mm or 3.5mm pipe walls with higher corrosion allowance
Heat pipes configured for low fouling and ease of cleaning and maintenance with automated cleaning technologies
Consequence of failure is minimised and manageable
Heat pipe exchanger running since 2008
Reduced risk of failure and reduced consequence of failure
HEATPIPE / HEAT EXCHANGER OPERATION
Primary can be hot exhaust, air, liquid, solid surface.
Secondary can be a gas, water, thermal oil, glycol, R245fa and various others.
Working fluid chosen according to temperatures involved - water, ammonia, acetone, Downtherm etc.
Pipe materials chosen according to performance requirement of fluid types and temperatures: carbon steel, stainless steel, aluminium, copper etc.
HEAT PIPE ADVANTAGES
Use of smooth pipes allows exchangers to be used in high particulate or oily applications
Low Pressure Drop
Low parasitic load means less capital and running cost on fans and greater energy recovery possibilities
Highly Scalable, Customisable & Configurable
Modular design allows on site assembly, can be designed for future expansion, to meet specific application or operational needs
Intermediate pipe Working Temperature
Allows higher exhaust temperature limits on some applications
Usually smaller and/or lighter than conventional exchangers
Fast reaction time, offers different control options and suitable for sensitive apparatus; does not require preheating
Each pipe operates independently so unit is not vulnerable to a single pipe failure. This prevents cross contamination, each heat pipe acts as an additional buffer between the two fluids
Ease of Cleaning & Maintenance
Can be maintained in situ (no uninstall) Manual/automated cleaning systems
Robust Materials and Long Life
Design allows pipes to freely expand and contract, thus no thermal stress on structure. Thick pipe walls resist erosion/corrosion
Isothermal Operation - no hot or cold spots
Eliminates cold corners and condensation, allows greater energy recovery and has better longevity for thermal oil
Our company is a leading manufacturer of ceramic tile products within the heart of the Indian ceramic industry. As part of our environmental policy we have for many years been searching for an effective waste heat recovery solution to support reduced fuel consumption and carbon footprint.
The nature of our manufacturing process has in the past proved too challenging for conventional waste heat recovery technology. Attempts within our industry to recover waste heat have been ineffective resulting in disappointment and hence a poor appetite within our industry for future investment in such projects.
RADHE Renewables working with Econotherm UK Heat Pipe technology made a proposal worthy of consideration due to many claimed technical advantages. We can now report that the proposed technology has been deployed within our facility and has exceeded all our expectations.
We have achieved an average 422 KW/h energy recovery by pre-heating our drier combustion air to about 168C. The technology that has been deployed is effective, robust and maintainable in a way that has not previously been witnessed in our industry.
We are already in discussion regarding further deployment of this impressive technology within our business and are pleased to recommend Radhe and Econotherm UK in this regard.
- Radhe Patel