An auxiliary heated solar water heating system

By using spiral heat tracing pipes and electric heat tracing tape in the solar water heating system, combined with a PLC controller, the problems of scaling in the hot water storage tank and high heating costs were solved, achieving efficient and energy-saving heating.

CN224381793UActive Publication Date: 2026-06-19HEFEI RONGSHIDA SOLAR ENERGY TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HEFEI RONGSHIDA SOLAR ENERGY TECH CO LTD
Filing Date
2025-04-15
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

In existing solar water heating systems, air source heat pump auxiliary heating is costly and scale easily forms on the inner wall of the hot water storage tank, affecting its capacity. Electric auxiliary heating is not economically efficient.

Method used

Using spiral heat tracing pipes and electric heat tracing tape, combined with a PLC controller, the system can automatically control the start and stop of the electric heat tracing tape. It also prevents scale buildup on the inner wall of the hot water storage tank through reheating circulation, thereby improving heating efficiency and saving energy.

Benefits of technology

It effectively prevents scale buildup on the inner wall of the hot water storage tank, improves heating efficiency, and ensures a constant water temperature through automatic control, thus saving energy.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224381793U_ABST
Patent Text Reader

Abstract

This utility model specifically relates to a solar water heating system with auxiliary heating, including a heat collection tube and an electric auxiliary heating zone. The heat collection tube is fixedly installed on a bracket and is used to receive solar-heated tap water. The upper end of the heat collection tube is connected to a hot water storage tank, which is used to initially store the tap water heated by the heat collection tube. The electric auxiliary heating zone is fixedly installed on the bracket and is connected to the hot water storage tank through a hot water pipe. A spiral heat tracing pipe is installed inside the electric auxiliary heating zone to perform secondary heating on the water from the hot water storage tank. The lower end of the electric auxiliary heating zone is connected to an insulated water tank. This utility model, by setting up a spiral heat tracing pipe and an electric heat tracing tape, heats the flowing water on the outside of the heat tracing pipe, effectively avoiding the technical problem of scale accumulation when heating in the hot water storage tank. The spiral heat tracing pipe increases the flow path of the liquid in the pipe, improving the heating efficiency.
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