Solar heating systems have the potential to be an efficient renewable energy technology, provided they are sized correctly. Sizing a solar thermal system for domestic applications does not warrant the cost of a simulation. As a result simplified sizing procedures are required. The size of a system depends on a number of variables including the efficiency of the collector itself, the hot water demand and the solar radiation at a given location. Domestic Hot Water (DHW) demand varies with time and is assessed using a multi-parameter detailed model. Secondly, the national energy evaluation methodologies are evaluated from the perspective of solar thermal system sizing. Based on the assessment of the standards, limitations in the evaluation method for solar thermal systems are outlined and an adapted method, specific to the sizing of solar thermal systems, is proposed. The methodology is presented for two common dwelling scenarios. Results from this showed that it is difficult to achieve a high solar fraction given practical sizes of system infrastructure (storage tanks) for standard domestic properties. However, solar thermal systems can significantly offset energy loads due associated DHW consumption, particularly when sized appropriately. The presented methodology is valuable for simple solar system design and also for the quick comparison of salient criteria.
|Title of host publication||Energy Procedia: 6th International Conference on Sustainability in Energy and Buildings, SEB-14|
|Number of pages||9|
|Publication status||Published - 2014|
|Event||6th International Conference on Sustainability in Energy and Buildings, SEB-14 - Cardiff, United Kingdom|
Duration: 25 May 2014 → 27 Jun 2014
|Conference||6th International Conference on Sustainability in Energy and Buildings, SEB-14|
|Period||25/05/2014 → 27/06/2014|