Flat heat absorber for solar tower power generation and system using same

A flat heat absorber for solar tower power generation, comprising a light-absorbing plate, a metal fiber felt, a metal wire mesh, a grid, baffles, fins, and cover plates arranged from the outside to the inside, wherein an inlet pipe and an outlet pipe are provided on the cover plate, and a side face of the heat absorber is provided with seals to form a sealed environment;

• and a filling pipe passes through the baffles;
• wherein the light-absorbing plate, the baffles, the seals and the filling pipe constitute a hot plate side having an interior being in a vacuum state and provided with a metal fiber felt, a metal wire mesh, a grid and a heat transfer fluid, and the heat transfer fluid enters through the filling pipe;
• the baffles, the fins, the seals, the cover plates, the inlet pipe and the outlet pipe constitute a heat exchange side, the working fluid flows through the heat exchange side via the inlet pipe and the outlet pipe, and the heat transfer fluid transfers heat energy to a circulating working fluid by means of indirect heat transfer using the heat pipe principle;
• the evaporation surface and the condensation surface of the heat transfer fluid in the heat absorber are on the same horizontal line
• wherein a plurality of horizontally arranged deflectors are further provided on the baffle, and the ends of adjacent deflectors are arranged in a staggered manner;
• the fins are zigzag fins, and form a heat exchange runner with multiple return strokes together with the deflectors in the interior of the heat exchange side;
• the inlet pipe and the outlet pipe are on an oblique diagonal of the heat exchange side, and the inlet pipe is above the outlet pipe;
• and
• the working fluid is air or supercritical carbon dioxide.

A solar tower power generation system, wherein the system comprises a windshield, a circulation pipeline and a flat heat absorber for solar tower power generation, the flat heat absorber for solar tower power generation comprising a light-absorbing plate, a metal fiber felt, a metal wire mesh, a grid, baffles, fins, and cover plates arranged from the outside to the inside, wherein an inlet pipe and an outlet pipe are provided on the cover plate, and a side face of the heat absorber is provided with seals to form a sealed environment;

• and a filling pipe passes through the baffles;
• wherein the light-absorbing plate, the baffles, the seals and the filling pipe constitute a hot plate side having an interior being in a vacuum state and provided with a metal fiber felt, a metal wire mesh, a grid and a heat transfer fluid, and the heat transfer fluid enters through the filling pipe;
• the baffles, the fins, the seals, the cover plates, the inlet pipe and the outlet pipe constitute a heat exchange side, the working fluid flows through the heat exchange side via the inlet pipe and the outlet pipe, and the heat transfer fluid transfers heat energy to a circulating working fluid by means of indirect heat transfer using the heat pipe principle;
• the evaporation surface and the condensation surface of the heat transfer fluid in the heat absorber are on the same horizontal line,
• wherein the windshield encloses the flat heat absorber and the circulation pipeline, the circulation pipeline is provided inside the flat heat absorber, the flat heat absorbers are connected in parallel via the circulation pipeline, and each flat heat absorber is an independent light-absorbing heat transfer element.