There are two different types: flat plate, where lots of thin tubes carry water through a flat absorber panel, and evacuated tube, where vacuum glass tubes capture the sun’s energy directly. There is little difference in performance between the two but evacuated tube panels do more obviously extrude from the roof.
Y Felinheli
Y Felinheli, formerly known in English as Port Dinorwic, is a town, community and also selecting ward next to the Menai Strait in between Bangor and also Caernarfon in Gwynedd, north-west Wales. The population of the village was 2,284 at the 2011 Census. Y Felinheli has its origins in two hamlets, Tafarngrisiau near St Mary's Church and also Aberpwll to the north-east where there was a mill on the Afon Heulyn. The mill was rebuilt closer to the sea in 1633 and gave its name to the settlement. The location was largely farming till the area was transformed by slate quarrying in the 19th century. A new dock was integrated in 1828 when lime was removed at Brynadda and slate as well as lime were loaded and also culm (coal dirt or anthracite slack) was brought in to terminate the lime kilns. The owners of the Vaynol Estate, the Assheton Smiths, possessed the majority of the land in Y Felinheli as well as established the Dinorwic Quarry in the late 18th century, They additionally developed the harbour to export slate transported to the quay by the Dinorwic Railway, a slim gauge railway that was subsequently changed by the Padarn Railway. Industrial growth provided Y Felinheli (Felin-hely, 1838) the alternate name Port Dinorwig or Port Dinorwic.