Heat retention and shielding are different targets
The selection of the power screen and the shading screen is not worth treating as a single general cover issue. The investor must first specify the period and the purpose for which he would move the system. Reducing the light load may respond to other production situations than affecting the night heat loss. M WUR The screen guide also deals with specific functions. The substance is therefore only a part of the decision. The production programme, the required lighting conditions, the mating management and the operating order are defined together, which properties should be compared to the particular greenhouse.
Compare the same measuring condition
Different material data may be easily misleading if they are produced in different test situations. The technical consultation shall specify which property, the method and state of assessment. The light transmission, the light-spread and the thermal behaviour are not interchangeable. M WUR LightLab is a useful professional starting point because it is a separate study of several properties of cover and umbrella materials. A product profile shall be placed in the entire operation of the production house: the light to the plant is influenced by the structure, glass, screen and current operating conditions. A single percentage of producers does not give a complete operating result.
Mechanics and controls make it usable
The material that appears to be suitable shall be equipped with a support and movement system that fits the structure and the daily operation. The plan is worth checking for closing positions, obstacles, open system space requirements and maintenance access. When more than one screen layer is made, coordination of movements is a separate task. The control check shall not stop at the button of opening and closing: it shall be understood which measurement, purpose of cultivation or operator decision will initiate the intervention. The system's malfunction should also be monitored, as the stuck umbrella may result in a different light and climate status than the program assumes.
The operational situation shall be visible in the take-over
At the time of delivery, the customer should be able to follow the full opening and closing movement, the end positions and the signals. The test confirms the intended operation, but does not in itself demonstrate annual energy savings. The latter requires local measurement and comparable operation. The operator should also know how to change the setting, which position to seek professional help and how to check the state of the substance. The purchasing decision thus serves the particular cultivation task. The aim is not to get all possible parachute functions into the investment, but to document the system chosen to fit the desired operation.
The decisive question for the procurement
If two offers contain different parachutes, it is worth asking both suppliers which production and climate change they propose their own version of. The advantage of one solution can disappear in addition to another operating order. The answers should therefore be compared with the same data from the selected greenhouse and production programme. The investor may request that, in addition to the different material, the necessary mechanical and regulatory changes be demonstrated. The offer thus shows not only a product exchange but also the conditions for determining usability before the decision.
Questions to reconcile the project
- Which light or thermal function is the intended screen primarily performing?
- Are the pooled material data derived from the same test conditions?
- What measurement, adjustment and error state controls the movement of the umbrella?
Professional background
The related international system solutions are provided by these primary manufacturers and execution sites. The decision aspects of the project shall be interpreted independently by the article; the specific size and content of the undertaking shall be clarified on the basis of the investment data.
development project preparation
The structure, engineering and on-site installation of the greenhouse is a coordinated working process. Learn the service area and compare the tasks of the planned investment.