DEVI Under soil heating in sports fields

With deviflex™ heating cables installed in football fields or golf courses the soil can be heated and the growth of grass can start early in spring. The area will then be ready up to two months earlier than usual. Furthermore the season can be prolonged in autumn when the period until the grass stops growing can be extended by means of heating.  

Install and play after 3 weeks!
Installation of deviflex™ heating cables can be made both when a new lawn is established or it can be applied to an existing grass area by ploughing the heating cables directly in the earth.

The heating cables are installed 25-30 cm below the surface to avoid damages to the cables in connection with use of e.g. vertical cutting but well over the drain pipes. The temperature at the root zone of the grass, i.e. approx. 10 cm below the surface, will be 6-10ºC.

The power is already on the stadium…
When it concerns major stadiums often the required effect is easily accessed. Normally, in these stadiums powerful lighting systems are installed which are only used when the field is used. It is rather uncomplicated to change such installations so that the power access can be used for the cable installation when the lighting system is not used.

The heating cables should be switched on 4-6 weeks in spring before the field can be used as the root net must start growth before the field can be used without risk of damaging the grass.

Product choice:
Please contact the local DEVI office for recommendation of a cable type with special mechanical strength to ensure the best solution.

In connection with heating of grass areas a devireg™ thermostat, which measures the temperatures in the root zone, i.e. approx 10 cm below the surface, should be used (e.g. devireg™ 316 or devireg™ 330). The heated area can be divided into a number of zones, each with a separate regulation unit. For heating cable systems of this size, 400 V heating cables are often used, and therefore it is possible to establish a delta/star regulation where it is possible to switch between high and low effect.