Vineyards

Late spring frosts are one of the greatest challenges vine growers face. Non-heated vines can suffer considerable inflorescence damages (up to 50 percent), while heated vines will have dramatically improved protection of harvest. This can reduce the losses by approximately 13-20 percent.​

Electric heating solves the challenge with energy-efficient systems using electric heating cables to protect vines against frost damage. Vineyard Frost Protection is a sustainable solution for a green and clean future through low energy consumption during the frost period, allowing up to 87 percent of the harvest to be saved. Vineyard Frost Protection is an ideal solution for any vineyard dimension.

The heating cables are installed and fixed on metal wire along the grapes and the system is controlled automatically by temperature sensors connected to the controller.​
 
The electric heating system product portfolio for the Vineyard Frost Protection consists of three major components:​
• a heating element – heating cable with constant wattage or a self-limiting heating cable​
• a controller with a temperature sensor or a controller with both temperature and moisture sensors​
• fixing elements and accessories​
 
Most of the cables are manufactured as ready-made heating elements with a specific length, with connecting power supply cable (cold lead or cold tail) and sealed joints (connection muffs or end terminals).​ The range of the heating cables' linear output for Vineyard Frost Protection is usually between 10 and 20 W/m (Watt per linear metre).​

To choose the best solution it’s necessary to:

• consider the vinery’s geographical position and temperature fluctuations and choose the corresponding power needed per metre
• indicate length of each row of vines​
• contact EH@danfoss.com for technical support