FIELD: devices for heating water. SUBSTANCE: collector has housing with absorbing panel arranged inside it. Panel is provided with hemispherical grooves which are brought in communication with cone-shaped distributing and collecting channels. Channels are flat in their base and spherical- flat in their upper portion. The radius of spherical component is equal to radius hemisphere of grooves to axis of symmetry of housing. Taper form of channels makes it possible to evenly distribute heat-transfer agent and to effect drainage without swirling and bubbling. EFFECT: enhanced efficiency. 6 dwg
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