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Heat pump type solar energy biomass boiler system and method

A technology of biomass boiler and solar energy, which is applied in the direction of solar thermal power generation, steam generation method, solar thermal device, etc., can solve the problems that hinder the development of light and heat, and have no experience in the integration and operation of a complete set of commercial solar thermal utilization systems, and achieve effective Conducive to environmental protection and sustainable development, lower temperature, simple structure

Active Publication Date: 2014-02-26
ZHEJIANG UNIV
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Problems solved by technology

The most significant challenge hindering the development of solar thermal energy in my country is that the localized comprehensive solar thermal utilization technology is not yet mature and suitable for large-scale promotion in China at this stage, and there is no experience in the integration and operation of a complete set of commercial solar thermal utilization systems.

Method used

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  • Heat pump type solar energy biomass boiler system and method

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Embodiment

[0026] The present invention will be described below in conjunction with specific examples, but the present invention will not be limited in any way.

[0027] Boiler thermal efficiency η in this example t About 0.83 ~ 0.75, take 0.8, the relevant temperature of industrial boilers is the boiler superheated steam temperature T H =250℃=523K, output steam temperature T st =150℃=423K, demineralized water temperature T 0 =30℃=303K, then the heat pump coefficient ψ r =1.483, the thermal efficiency of the system is η k =η t ψ r =1.186>1, which shows the heat pump benefit. If the boiler superheated steam temperature is raised to T H =400℃=673K, the softened water temperature is increased to T 0 =30℃=333K, then the thermal efficiency of the system will increase to 1.97. The improvement of the system efficiency of the heat pump means that the demand for steam supply of the high-pressure evaporator (boiler) is reduced, the input of primary energy and fuel is reduced, and the econo...

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Abstract

The invention discloses a heat pump type solar energy biomass boiler system and method. A softened water tank is divided into two outlets after being connected with a water supply pump; the softened water tank first outlet, a water feeding pump, a biomass boiler, a third throttle valve, the boiler steam drum first outlet, a second throttle valve, a user supplying gas-distributing cylinder and a fourth throttle valve are connected in turn; the softened water tank second outlet, a first throttle valve, a condensing heat exchanger, a high heat storage water tank, a trough type concentrating solar energy collector, an evaporator, the injector second inlet are connected in turn; the boiler steam drum second outlet is connected with the injector first inlet; the biomass boiler exhaust pipe outlet is connected with the condensing heat exchanger, an induced draft fan and a chimney in turn; the evaporator condensed water outlet is connected with the softened water tank through a solenoid valve. According to the heat pump type solar energy biomass boiler system and method, the environment-friendly advantages of the biomass boiler are utilized, the low-grade heat energy of the solar energy, the waste heat of the discharge smoke and the biomass is converted into the intermediate-grade heat energy for heating, and accordingly the heat efficiency of a pump heating system is greatly improved and the value-added heat energy is achieved.

Description

technical field [0001] The invention relates to a heat pump solar biomass boiler system and a method thereof, belonging to the technical field of clean energy utilization. Background technique [0002] Today's world is facing the problem of increasing shortage and depletion of primary energy, and vigorously developing renewable energy will undoubtedly provide a new way out for this. my country's land area is 9.6 million km 2 , ranking third in the world, the solar radiation capacity is about 1.59×10 11 KWh, equivalent to about 6.9 trillion tons of coal that the land surface receives solar energy every year. Among them, the annual sunshine time is slightly more than 2200h, and the total annual solar radiation is higher than 5016MJ / m 2 The area accounts for more than 2 / 3 of the total area of ​​the country. It is equivalent to 450-500 billion tons of standard coal can be obtained by solar thermal technology every year. Solar thermal utilization is an important field of ren...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B1/00F24J2/04
CPCY02E10/465Y02E10/44Y02E10/46
Inventor 肖刚倪明江骆仲泱高翔岑可法方梦祥周劲松施正伦程乐鸣王勤辉王树荣余春江王涛
Owner ZHEJIANG UNIV
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