Geothermal Assignments
High Solar Fraction Heating and Cooling Systems with Combination of Innovative Components and Methods
- Results from the European research project High-Combi
General information:
• Technology developer: CRES ( Centre of Renewable Energy Sources) • Date of issue (year): 2006
Technology sheet
Technology - Solar High Combi System
Aims and Objectives:
The proposed project is based on two technologies: Solar combisystems and solar cooling systems. Solar combisystems are solar thermal systems that provide not only domestic hot water but also space heating. This type of systems has been on the market for about a decade. However, they are mainly employed in single-family houses in Central and Northern Europe (Weiss, W. (ed.): Solar Heating Systems for Houses – A Design Handbook for Solar Combisystems, James & James Ltd., London, 2003). Their market share in the single-family house sector is still increasing. In larger applications, e.g. multi-family houses, most solar thermal systems supply only domestic hot water. A few multi-family house applications have been realized but they cover quite low solar fractions in the order of magnitude of 10 %. One reason for this is that larger collector areas that are necessary for higher solar fractions, cause problems during stagnation in summer. This problem is even more prominent in southern European countries with a short heating season where the market share of solar combisystems is still very low. The proposed project will solve this problem by using the surplus energy for cooling. On the other hand, cooling of residential buildings in Southern Europe and of commercial and industrial buildings all over Europe is an increasing and promising market. Approximately 100 solar cooling systems have been installed worldwide so far. Most of them are quite large systems with a cooling power above 100 kW. However, as reported by experts in the IEASolar Heating and Cooling Programme’s Task 25 (Hans-Martin Henning (ed.):
- Results from the European research project High-Combi
General information:
• Technology developer: CRES ( Centre of Renewable Energy Sources) • Date of issue (year): 2006
Technology sheet
Technology - Solar High Combi System
Aims and Objectives:
The proposed project is based on two technologies: Solar combisystems and solar cooling systems. Solar combisystems are solar thermal systems that provide not only domestic hot water but also space heating. This type of systems has been on the market for about a decade. However, they are mainly employed in single-family houses in Central and Northern Europe (Weiss, W. (ed.): Solar Heating Systems for Houses – A Design Handbook for Solar Combisystems, James & James Ltd., London, 2003). Their market share in the single-family house sector is still increasing. In larger applications, e.g. multi-family houses, most solar thermal systems supply only domestic hot water. A few multi-family house applications have been realized but they cover quite low solar fractions in the order of magnitude of 10 %. One reason for this is that larger collector areas that are necessary for higher solar fractions, cause problems during stagnation in summer. This problem is even more prominent in southern European countries with a short heating season where the market share of solar combisystems is still very low. The proposed project will solve this problem by using the surplus energy for cooling. On the other hand, cooling of residential buildings in Southern Europe and of commercial and industrial buildings all over Europe is an increasing and promising market. Approximately 100 solar cooling systems have been installed worldwide so far. Most of them are quite large systems with a cooling power above 100 kW. However, as reported by experts in the IEASolar Heating and Cooling Programme’s Task 25 (Hans-Martin Henning (ed.):