Development of the Sunridge ICS System
Abstract
In order to realize Nearly Zero Energy Buildings and make the existing building stock energy efficient, the energy demand for heating and cooling and the electrical energy consumption needs to be reduced drastically. The next step in the so-called Trias Energetica is the local production of renewable energy, both electricity and thermal energy. A large (growing) part of the energy demand is related to hot water consumption. Here thermal solar energy can play an important role. Therefore, development of easy to integrate and install, efficient thermal solar systems is essential. Moreover, the main disadvantage of thermal solar energy systems, i.e. the required south orientation on z tilted roof and the competition with PV systems needs to be tackled to increase the applicability of such systems. In this paper the development of the Sunridge® system, a ridge integrated solar domestic hot water system, is described. A tube in tube concept as SDHW is developed and is placed on the ridge of the roof. The outer tube contains the spectral selective layer and the inner tube is the storage volume, a transparent cover is placed as outer layer. Heat is transferred from the outer tube to the inner tube by means of the effective boiling and condensation of water under low pressure between the two cylinders. The system will be inherent safe for overheating and freezing. The performance and end user price target is to be in the order of the price /performance of a standard SDHW system, nowadays on the market. The final design for the system is ready and pre-production takes place. In 2018 the first systems will go to the market.