WATER IS WATER, ISN'T IT?
Steam and hot air do not work in the same way as hot water at all:
- Water is one of nature’s best energy transmitters and hot air is one of the worst.
- Gravity means that the water flows downwards and reaches the plant quickly, right down to the roots.
- Hot air and steam always rise , so some of the energy (heat) disappears before it gets to the plant.
The Heatweed Method fully exploits the properties of water: Combined with sensor technology and advanced temperature control, this results in a means of controlling weeds that requires very little energy. Thanks to efficient energy transfer, a maximum of four applications a year will suffice.
A study carried out at the University of Copenhagen shows that treatment with hot water produces the lowest weed cover – even with the lowest treatment frequency. See the below table:
WHY NOT JUST MODIFY A HIGH-PRESSURE WASHIER?
The temperature of the water applied to the plant has to be 98-99°C for the plant to die. Otherwise there is no systemic effect on the roots and the plant grows back after you have ‘watered it’.
- Uneven temperature = uneven weeding results: A high-pressure washer is designed for high pressure – not for a stable, high temperature. The temperature of the water from high-pressure washers varies by at least 10°C, especially above 75°C. Heatweed machines have been specially developed for professional weed control and work in completely the opposite way – at a very low, stable pressure all the time.
- Lower energy consumption and higher capacity = lower costs and higher user satisfaction: Higher energy consumption and lower efficiency mean higher labour and operating costs, while 3-5 times more water per square metre means 3-5 times higher costs.
The Heatweed Method = the weeds disappear – and stay away with minimal water consumption and stable temperature control (max. +/- 0.6°C). The object is not to wash the weeds away or water them, but to remove them for good.