Composite phase change heat storage solar water heater without water tank

Abstract

The invention discloses a composite phase change heat storage solar water heater without a water tank, comprising a vestlet, a bracket, a main cold water inlet tube, a main hot water outlet tube, a polyurethane insulation coating, a solar companion, a tailstock and a plurality of vacuum heat collecting units, wherein the bracket is fixedly connected with the tailstock, all the vacuum heat collecting units are arranged on the tailstock and fixed by the bracket, and the vestlet covers outside the bracket to protect the vacuum heat collecting units; the main cold water inlet tube is connected in parallel with a plurality of cold water branched tubes respectively extending to the bottom of every layer of stainless steel tube after penetrating through a sealing plug; and the main hot water outlet tube is connected in parallel with a plurality of hot water branched tubes respectively extending to the upper part of a stainless steel tube at an inner layer after penetrating through a sealing plug. The composite phase change heat storage solar water heater without the water tank has high heat storage capacity, therefore, advanced water storage is not needed; and the composite phase change heat storage solar water heater without the water tank is directly connected with a running water system, therefore, hot water can be used at any time, and the composite phase change heat storage solar water heater without the water tank has stable water temperature and is simple and convenient to operate.

Description

technical field [0001] The invention belongs to the field of solar thermal utilization, and in particular relates to a tankless composite phase change thermal storage solar water heater. Background technique [0002] Today, when the global energy situation is tense and climate warming seriously threatens economic development and people's life and health, all countries in the world are seeking new energy alternative strategies in order to achieve sustainable development and gain an advantage in future development. Solar energy has become the focus of attention due to its obvious advantages such as cleanliness, continuous flow, and safety. In the development of the solar energy industry, the heat conversion technology of solar water heaters is undoubtedly the most mature, and its industrialization process is also one step ahead of industries such as photovoltaic cells and solar power generation. [0003] Solar water heaters have become the first commercialized renewable ener...

AI Technical Summary

Problems solved by technology

[0006] 1. Since the water temperature often exceeds the scaling point of water by 60°C, it is easy to cause hard scale on the inner wall of the heat collecting tube, which makes the heat collecting performance of the heat collector decline year by year;

[0007] 2. The thermal conductivity of traditional phase change heat storage materials is very poor, making solar water heaters inefficient;

[0008] 3. The phase change material used in traditional phase change thermal storage solar water heaters is a solid-liquid phase change material, which is placed in a vacuum tube. Due to the volume change during the phase change process, the vacuum tube may break

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