BS EN 12977-2:2018

What is BS EN 12977-2- Custom-built solar system about?  

BS EN 12977 discusses thermal solar systems and components. BS EN 12977-2 is the second part of BS EN 12977 multi-series and discusses test methods for solar water heaters and combi systems. 

BS EN 12977-2 applies to small and large custom-built solar heating systems with liquid heat transfer medium for residential buildings and similar applications and gives test methods for verification of the requirements specified in EN 129771:2018. 

BS EN 12977-2 applies to the following types of small custom built solar heating systems 

• Systems for domestic hot water preparation only 
• Systems for space heating only 
• Systems for domestic hot water preparation and space heating 
• Others (e.g., including cooling) 

BS EN 12977-2 applies to large custom-built solar heating systems, primarily to solar preheat systems, with one or more storage vessels, heat exchangers, piping, and automatic controls and with collector array(s) with forced circulation of fluid in the collector loop. 

Note: BS EN 12977-2 does not apply to: 

• Systems with a store medium other than water (e.g., phase- change materials), 
• Thermosiphon systems, 
• Integral collector-storage (ICS) systems. 

Who is BS EN 12977-2- Custom-built solar system for? 

BS EN 12977-2 on thermal solar systems and components is useful for: 

• Solar-powered products manufacturers  
• Design engineers 
• Quality control personnel 

Why should you use BS EN 12977-2- Custom-built solar system? 

Custom-built solar heating systems are either uniquely built or assembled by choosing from an assortment of components. Systems of this category are regarded as a set of components. The components are separately tested, and test results are integrated into an assessment of the whole system.  

BS EN 12977-2 provides you with a method for thermal performance characterization and system performance prediction of small custom-built systems by means of component testing and system simulation. BS EN 12977-2 contains methods for thermal performance characterization and system performance prediction of large custom-built systems. 

Quality assurance is of primary importance for large custom-built systems. The total investment cost for such systems is higher than for smaller ones, although the specific investment cost (i.e., per m2 collector area) is lower. Hence, both the purchasers of large custom-built systems and the governments are interested in efficient, reliable, and durable systems, the thermal performance of which may be accurately predicted, checked, and supervised. BS EN 129772 helps you to manufacture high-quality custom-built solar heating systems.