Single-working medium pressure-bearing circulated layered heat-storage split solar water heater with glass heat collecting pipes

Abstract

The invention discloses a single-working medium pressure-bearing circulated layered heat-storage split solar water heater with glass heat collecting pipes, relating to the technical field of solar thermal energy utilization. The invention mainly uses a layered heat-storage water tank, a water-injection type pressure-bearing circulated full-glass vacuum pipe heat collecting module and a magnetic-control array joint anti-explosion pressure gage for designing the single-working medium pressure-bearing circulated layered heat-storage split solar water heater with the glass heat collecting pipes. The layered heat-storage water tank is designed by adopting a multi-node model concept and comprises at least two pressure-bearing containers which are connected through a communication pipe, and heat insulating layers coat outside the pressure-bearing containers. The single-working medium pressure-bearing circulated layered heat-storage split solar water heater with the glass heat collecting pipes is in a single-water working medium temperature difference type forced circulation mode, adopts the combination of the multi-cavity layered heat-storage pressure-bearing water tank and the water-injection type pressure-bearing circulated full-glass vacuum pipe heat collecting module to realize temperature difference type heat collecting circulation through an intelligent control center and ejects hot water by utilizing the pressure of a tap water pipeline for users to use the hot water.

Description

technical field [0001] The invention relates to the technical field of utilization of solar thermal energy, in particular to a glass heat collecting tube single working medium pressurized cycle layered thermal storage split solar water heater. Background technique [0002] At present, most solar water heaters are compact, and their structure is: the all-glass vacuum heat collecting tube is directly inserted into the hot water storage tank. Using the characteristics of large proportion of cold water and small proportion of hot water, the cold water is formed in the vacuum tube and the hot water storage tank. And down, the natural microcirculation of hot water from bottom to top makes the temperature of the whole water gradually rise to a certain temperature. Its heat preservation and heat storage tanks are all single-cavity (non-layered heat storage), so the temperature difference between the inlet and outlet of the water tank is very small, which makes the heat collection ef...

AI Technical Summary

Problems solved by technology

The heat preservation and heat storage tanks are all single-chamber (non-layered heat storage), so the temperature difference between the inlet and outlet of the water tank is very small, which makes the heat collection efficiency of the heat collection tube very low

Split wall-mounted solar water heaters mostly use U-shaped tubes or superconducting heat pipe vacuum glass tube collectors. Notably, because the heat transfer medium in the heat collecting tube is air, the heat collecting efficiency of the heat collector is very low, and the heat exchange efficiency of the U-shaped tube or the superconducting heat pipe in the connecting header is insufficient, which makes the heat exchange efficiency very low. Therefore, the thermal efficiency of split wall-mounted solar water heaters is about 13% lower than that of traditional compact water heaters.

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