Large solar heating system with seasonal storage for buld drying in Lisse, the Netherlands

Within IEA Task 14 (Advanced Solar Systems) of the IEA Solar Heating and Cooling Programme a working group was established dealing with large advanced solar energy systems (the Large Systems Working group). The goal of this working group was to generate a common base of experiences for the design and construction of advanced large solar systems. The Netherlands participated in this group with a large solar heating project on bulb drying in Lisse. In this project a number of innovative system parts were introduced. The project was initiated in 1991 and realised in 1994, the monitoring started beginning 1995 and continues to end 1996. In the framework of the IEA documentation of the lessons learned is the most important product of this international research [1]. The long planning period for realising these kind of projects makes it important to make clear goals for all parties involved in the project. Further integration and improved communication between the "conventional" part of the system and "solar"part of the system is recommended. International collaboration contributes significally to enhancement of the knowledge and experience for these type of systems. This paper concentrates on the Lisse projec