Particle solar receiver

A particle solar receiver, comprising:

• a feeding bin to temporarily store endothermic particles to be heated;
• and
• a multi-stage plate heat absorbing channel allowing the endothermic particles to flow along a predetermined path by gravity, the multi-stage plate heat absorbing channel comprising a plurality of plate-type structures which forms a changing flow direction of the endothermic particles between adjacent plate-type structures;
• wherein at least one of the plurality of plate-type structures is arranged to be directly exposed to and heated by the concentrated solar power and is referred to as a direct irradiating plate, and the direct irradiating plate comprises at least the inclined plate or the lower plate of the sandwich layer, and
• wherein the direct irradiating plate is modified according to any one of the following modification solutions or a free combination of the modification solutions:
• modification of enhancing transmission, comprising at least using quartz glass as a direct irradiating plate material,
• modification of enhancing reflection, comprising at least using a ceramic reflective plate as a direct irradiating plate material, and
• modification of enhancing absorption, comprising at least coating a surface of the direct irradiating plate with a high temperature-resistant far infrared radiation coating.

A particle solar receiver, comprising:

• a feeding bin to temporarily store endothermic particles to be heated;
• a multi-stage plate heat absorbing channel allowing the endothermic particles to flow along a predetermined path by gravity, the multi-stage plate heat absorbing channel comprising a plurality of plate-type structures which forms a changing flow direction of the endothermic particles between adjacent plate-type structures;
• connecting funnels receiving the endothermic particles coming from the multi-stage plate heat absorbing channel;
• a storage bin connected to the connecting funnel;
• a temperature control device, which comprises:
• flow control valves formed to be able to control an amount of the particles flowing through the connecting funnels;
• temperature sensors arranged at temperature measurement points of the connecting funnels and/or the multi-stage plate heat absorbing channel;
• and
• at least one processor connected to receive temperature signals from the temperature sensors and output control signals to the flow control valves.