| 摘要 |
A solar collector comprising: a box-shaped housing comprising an opening in one of the facets of the housing; a hollow plastic grill disposed within the housing and having a longitudinal dimension smaller than a longitudinal dimension of said housing, to allow expansion of said grill upon absorbing solar energy; a pipe in fluid communication with said grill and passing through said opening; and a seal disposed about said pipe and at least partially within said opening, to allow said pipe to sealingly slide through said opening when said grill expands and shrinks. |
