Antifreezing flat-plate solar heater

Abstract

The invention provides an antifreezing flat-plate solar heater, relating to the technical field of solar heaters. The antifreezing flat-plate solar heater comprises a heat insulation water tank and at least one group of flat-plate heat collectors, wherein the heat insulation water tank is provided with a heat insulation tank water inlet pipe, a heat insulation water tank water outlet pipe, a heat insulation water tank circulation water inlet pipe and a heat insulation water tank circulation water outlet pipe; and each flat-plate heat collector comprises heat absorption plates, heat absorption pipes, a first header and a second header, the water inlet end of each first header is connected with the water outlet end of the heat insulation water tank circulation water outlet pipe, the water outlet end of each second header is connected with the water inlet end of the heat insulation water tank circulation water inlet pipe, each heat absorption pipe is arranged horizontally, the first headers and the second headers are arranged vertically, the water inlet ends of the first headers and the water outlet ends of the second headers are respectively arranged at the upper part of the heat collector. The antifreezing flat-plate solar heater disclosed by the invention has a simple and reasonable structure and the cost can be reduced, therefore the flat-plate solar heater can be generalized easily.

Description

technical field [0001] The invention relates to the technical field of solar water heaters. Background technique [0002] At present, flat-panel solar water heaters, such as Figure 10 As shown, it includes an insulated water tank and a flat plate heat collector, and the insulated water tank is provided with an insulated water tank inlet pipe, an insulated water tank outlet pipe, an insulated water tank circulating water inlet pipe, and an insulated water tank circulating outlet pipe; the flat plate heat collector includes a heat absorbing plate , a heat-absorbing pipe, a first header and a second header, and the two ends of each heat-absorbing pipe are respectively connected to the corresponding first header and the second header; The water outlet end of the circulating water outlet pipe is connected, the water outlet end of the second header is connected with the water inlet end of the circulating water inlet pipe of the insulated water tank, each heat-absorbing pipe is ar...

AI Technical Summary

Problems solved by technology

The structure of this flat solar water heater cannot resist freezing, so that this flat solar water heater cannot be applied to areas with freezing conditions, and thus cannot be popularized.

Another technology is to put non-freezing heat medium (generally using antifreeze) into such a collector, and then heat the water in the water tank of the water heater through a heat exchange system. This technology has high cost and low thermal efficiency. The failure and absence of the water heater will affect the normal operation of the water heater.

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