Self-emptying solar collector system

Abstract

The invention relates to the field of solar collectors, in particular to a self-emptying solar collector system. According to the design of an upper inner cavity, a lower inner cavity and a V-shaped metal pipeline, when a solar collector needs to be emptied in winter cold weather, a hot water storage tank is drained; water in the upper inner cavity enters the lower inner cavity through the V-shaped metal pipeline under the self-gravity effect, and the water in the lower inner cavity enters the hot water storage tank through a pipe orifice located at the lower end, so that the water in the water collector is drained completely, and the water collector is prevented from being frozen off; meanwhile, the upper inner cavity communicates with the lower inner cavity through a capillary tube, andit can be ensured that the water in the upper inner cavity is drained completely; and water accumulation is avoided.

Description

technical field [0001] The invention relates to the field of solar heat collectors, in particular to a self-draining solar heat collector system. Background technique [0002] my country ranks first in the world in terms of production capacity and application scale of solar thermal application products. In recent years, with the steady progress of the government's energy conservation and emission reduction work, the market demand for solar medium and low temperature thermal energy in hot water, industry, and heating has continued to grow situation. At present, vacuum tube collectors are mainly divided into two types, header collectors with water flowing in the vacuum tubes and U-shaped tubes and heat pipe collectors without water flowing in the vacuum tubes. At present, in practical applications, header collectors account for a large proportion. This kind of collectors mainly include headers, vacuum tubes, tail frames, silicone rings and other organizations. The common type ...

AI Technical Summary

Problems solved by technology

This type of collector has a faster hot start and stable operation, but the cost of this type of collector is higher, more than 500 yuan per square meter, and it needs to inject antifreeze or open the antifreeze cycle during use, and the cost of antifreeze is relatively high

At present, the heating and industrial application market in the north is huge, limited to the problems of antifreeze and price, and the current promotion volume is small. According to the above requirements, a low-cost self-draining solar collector system is urgently needed

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