Solar, heat-pump composite, stepped-heating type energy-storage hot-water making method and special device

Abstract

The present invention relates to a solar energy-heat pump combination and stepping heating type energy storage hot water preparing method and special device adopting said method. It consists of solar heat collector, heat pump, electric heater unit, water tank and control unit, featuring that: hot water manufacturing process can be completed by using solar heat collector, or heat pump, or electric heater unit simultaneously or respectively making stepping heating combination to heat collector heat cycling water tank, stepping heating type conflux hot water tank and energy storage water tank; hot water preparing and using adopting time-sharing system, i.e. quantitative hot water capable of pre-prepared and stored in stepping heating type conflux hot water tank and energy storage water tank used as next periodic time-sharing hot water supply, said invention having higher efficiency for solar energy utilization and lower running cost than current technology, ensuring hot water output reaching to higher than 45 degree centigrade and 24 hr. 365 day supply.

Description

technical field [0001] The invention relates to the field of solar energy utilization, in particular to a solar-heat pump composite, hierarchical heating energy storage hot water production method and a special device thereof. Background of the invention [0002] The amount of solar energy is huge, and the annual solar radiant energy reaching the earth's surface is about 130 trillion tons of standard coal, but its characteristics are dispersion, discontinuity and instability. Although the total amount of solar radiant energy reaching the earth's surface is large, the energy flux density is very low. Therefore, if you want to obtain a certain radiant power, you need a larger area to receive radiation. The so-called discontinuity and instability mean that solar radiation energy is limited by natural conditions such as day and night, seasons, geographical latitude, and altitude, as well as random factors such as sunny, cloudy, cloud, and rain. In order to eliminate these short...

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Problems solved by technology

The hot water device adopting this technical solution has also encountered some problems in practical application, such as: when the installation area of ​​the solar collector on the roof of the building is limited, it is difficult to ensure the maximum utilization of solar energy, and at the same time, the energy utilization of solar energy is insufficient Some of them must be supplemented by heat pumps. Therefore, sufficient low-cost energy such as off-peak power supply is required as a guarantee. It is difficult to obtain sufficient off-peak power supply at night when the current capacity of the incoming line of household users is fixed. ; At the same time, in order to achieve the effect of energy storage and cost reduction, the volume of the water tank will need to be made larger, which will increase the installation cost of the hot water device; for large centralized hot water devices, increasing the volume of the water tank will not only increase the installation cost, It also creates problems with roof installation and the bearing capacity of the installation surface, and reduces the installation area of ​​the solar collector, thus affecting the installation adaptability of its application

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