In Clause 25, different mathematical models are used to describe the thermal performance of liquid
heating collectors, depending on the collector type (glazed or unglazed collector) and the test method used (steady-state or quasi dynamic test method). This informative annex larifies the relationship between the different models.
In Clause 25, different mathematical models are used to describe the thermal performance of liquid
heating collectors, depending on the collector type (glazed or unglazed collector) and the test method
used (steady-state or quasi dynamic test method). This informative annex clarifies the relationship
between the different models.