System of electrocable heating for the soil of Exxon E 16,5 560
In both cases the heating cable is laid in the sand which is under the soil or in drain tubes if those are available.
For mechanical protection of a heating cable during processing of the soil in industrial greenhouses it is recommended to place the metal gauze over a cable.
In greenhouses besides heating of soil air heating is obligatory. For this purpose convectors different warmly can be used.
Average characteristics of specific power are in limits:
For hotbeds of 180 - 240 W/sq.m of useful area;
For greenhouses 200 – 300 Vtm2 Squares of the greenhouse.
Electrocable heating is applied to heating of sowing boxes and flowerpots at the same time the power of system of heating makes about 100 W/sq.m and use a heating cable with a specific power of 20 - 25 W/m.
The organization of a faltering electrical heating of soil in myceliums is possible (November – December) at the same time it is necessary to be guided by criterion of an expense of the electric power on heating of soil at the rate of 3 – 4 kW of h/m3 air volume of the room of a mycelium. It is intended for full (including accumulative) heating and creation of comfortable conditions in residential and production buildings of all types. Are used also for heating of greenhouses, livestock complexes, systems of anti-frosting and snowmelt, protection of pipelines against freezing and many other things. Are delivered in bays and in the form of ready heating sections with a "cold" connecting cable and tight couplings.
Maximum temperature of a vein
The most admissible external temperature
Minimum temperature of installation
Electric resistance of the screen no more
Electric resistance of isolation at +20 °C not less
Linear thermal emission:
at a power number from 120 to 4465 W
at a power number from 140 to 5260 W
Bend radius at installation not less
minus 5 °C
5,2 … 6,5 mm
- specific power is 16,5 W/m;
- supply voltage is 220B 50 Hz;
- single-conductor heating cable with two-layer isolation;
- the shielding braid wattled of a copper wire;
- connecting ends 2,5 m long.
It is applied to installation of systems
electroheating and "heat-insulated floor" in various rooms.
Length, m: 34
Resistance of section, Ohm: 86,7