Housing-concentrated solar water heating system

Abstract

The invention discloses a housing-concentrated solar water heating system. The system comprises a solar heat collection system and a hot water supply system, wherein the solar water collection system comprises a heat storage water tank applied to concentrated water supply of a plurality of users in the housing; the hot water supply system comprises first hot water pipes, second hot water pipes and end user assistant heating devices; the first hot water pipes are water supply vertical pipes which are communicated with the heat storage water tank; the second hot water pipes are water supply pipes which are communicated with the first hot water pipes and a water supply pipe of single user in the housing; the end user assistant heating devices are distributed in the single user and are communicated with the second hot water pipe for carrying out end assistant heating, thereby forming an open-type single-pipe circulation-free hot water supply system with synergism of the solar heat collection system and the end user assistant heating devices and with removal a hot water returning pipeline; the area of a solar heat collector and the volume of the heat storage tank can be reduced by 50% by changing the design parameters of the system.

Description

technical field [0001] The invention relates to the technical field of solar hot water supply, more specifically, the invention relates to a residential centralized solar hot water system. Background technique [0002] my country is rich in solar energy resources, and the total annual solar radiation of more than two-thirds of the country's land area exceeds 3340-8360MJ / m 2 , the annual average sunshine hours are more than 2200 hours. At present, my country's energy-saving market is mainly concentrated in the fields of industry and construction, and the integrated technology of solar energy and buildings has become one of the commonly used building energy-saving technologies. [0003] The design concept of the conventional solar water heating system is "based on solar energy, supplemented by commercial energy", including the solar heat collection water supply and return system and the user's terminal water supply and return system, with the purpose of maximizing the use of ...

AI Technical Summary

Problems solved by technology

[0011] Therefore, the actual utilization rate of solar energy in the conventional system is low, and the amount of conventional energy that needs to be supplemented is large. Low efficiency, resulting in secondary waste of energy

Coupled with the complicated operation and management requirements, the water price of the residential solar centralized hot water system remains high, and the water fee for each household is even higher than the cost of installing an independent electric heater

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