In the heating system, vegetation-heating technique that provides balanced heat distribution in the greenhouse will be applied. Tube-rail heating system shall be established with steel pipes of 50 mm diameter and shall be laid between each row of plants. By heat transfer and rails, plant maintenance, harvesting and product handling operations are simplified and labour costs are minimized. For a balanced heat distribution in the greenhouse, TSCHELMAN method shall be applied for manifold collectors and line distribution.
In the heating system of greenhouses, 80 P0PC geothermal energy source will be used. When the outside atmosphere temperature is –9 P0PC, the internal atmospheric temperature of the greenhouse should be 16 P0PC, and energy is required to support the temperature difference of 25 P0PC. A minimum temperature of 16 P0PC at night is ideal for good respiratory stability and metabolic activity. In the climatic conditions of Turkey, temperature difference based on 25 P0PC, will provide sufficient safety. In order to determine the energy and geothermal fluid needs of the greenhouse to be established, the use of greenhouse cover material and thermal-shade curtain to be used has an important role. Energy curtain application will provide significant savings and increase the efficiency of geothermal potential.
In order to prevent corrosion and crusting in the heating system pipes and circulation pumps caused by geothermal fluid, a heating system with closed circuit heat exchanger will be used in the greenhouse. Water heated by transferring through the plates of the heat exchanger that is selected according to the type, capacity, chemical properties and temperature of the geothermal, is transferred into the closed circuit circulation water, thus, the heating shall be ensured by circulating the heated water by means of circulating pumps and heat distributor lateral serpentine pipes in the greenhouse.
When the greenhouse ambient temperature reaches the specified level, circulation will be controlled by the command from heat sensors inside the greenhouse and inside the pipe and circulation pumps in the heat exchanger unit will be deactivated and in-house circulation will continue. When the energy requirement arises, the circulation pumps connected to the heat exchanger will be activated automatically. System will be controlled by computer automation, and heat balance will be ensured by adjusting the proportional mixture by means of servo motor and three-way valves.