Mixed-flow-channel double-effect solar heat collection plate core and heat collector

Abstract

The invention discloses a mixed-flow-channel double-effect solar heat collection plate core and belongs to the field of solar utilization and energy conservation for buildings. The solar heat collection plate core is of an integral structure and comprises end faces arranged at two ends. A heat absorbing plate is arranged between the two end faces. A base plate is arranged below the heat absorbing plate. A cavity among the heat absorbing plate, the base plate and the end faces is a ventilation layer. The back face of the heat absorbing plate is provided with a grid type fluid flow channel. An air flow guide plate is arranged in the ventilation layer in the length direction of the heat collection plate core. An air inlet pipe and an air outlet pipe are communicated with the ventilation layer. According to the mixed-flow-channel double-effect solar heat collection plate core, the heat collection efficiency is high, hot air heating or hot water supply or hot air and hot water heating is adopted according to temperature changes in different seasons and actual requirements, and the heating defects of a solar heat collection system only adopting air or water as media are effectively overcome. The invention further discloses a heat collector comprising the solar heat collection plate core. The heat collector is good in heat preservation effect and small in heat loss.

Description

technical field [0001] The invention belongs to the fields of solar energy utilization and building energy saving, and in particular relates to a mixed channel double-effect solar heat collector core and a heat collector including the solar heat collector core. Background technique [0002] At present, with the development of solar energy utilization technology, solar flat plate collectors and vacuum tube collectors have been widely used in residential buildings and public buildings to produce domestic hot water, but solar energy has not been widely used for building heating in winter. Area application, the main reason is that solar radiation varies greatly with seasons and time, which is inconsistent with heating load demand, and there is a seasonal deviation between energy demand and solar energy supply. And existing solar heat collector, fail to effectively solve this technical problem. Therefore, it is necessary to study a new type of solar collector to solve the defect...

AI Technical Summary

Problems solved by technology

In cold regions, for the hot water heating system of flat-plate hot water collectors and vacuum tube collectors, in order to prevent the flat-type hot water collectors and heat collection system pipelines from freezing and freezing, on the one hand, it is necessary to add anti-freezing circulating medium to Secondary heat exchange, on the other hand, also requires the operation of circulating pumps or the use of electric auxiliary heating to prevent freezing of pipelines. These measures not only consume electric energy, but also increase system investment and operating costs, and reduce the utilization efficiency of solar energy.

For a single air heating system, although the winter antifreeze problem is solved, the heat energy generated by the air heat collection system in summer cannot be used, resulting in system overheating and energy waste

[0004] Therefore, whether it is a single solar heat collection system that uses solar hot water heating or hot air heating, there are certain defects in heating and heating.

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