CN104019566A - Solar system having phase-change type heat collection - Google Patents

Solar system having phase-change type heat collection Download PDF

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Publication number
CN104019566A
CN104019566A CN201410112883.5A CN201410112883A CN104019566A CN 104019566 A CN104019566 A CN 104019566A CN 201410112883 A CN201410112883 A CN 201410112883A CN 104019566 A CN104019566 A CN 104019566A
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CN
China
Prior art keywords
pipe
solar
phase
solar collector
heat
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CN201410112883.5A
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Chinese (zh)
Inventor
庞怡
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庞怡
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Priority to US201361806839P priority Critical
Priority to US61806839 priority
Application filed by 庞怡 filed Critical 庞怡
Publication of CN104019566A publication Critical patent/CN104019566A/en

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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy
    • Y02E10/44Heat exchange systems

Abstract

The invention discloses a solar system having phase-change type heat collection. The solar system is composed of a solar collector and a water tank having heat exchange. The solar collector is provided with a solar collecting panel and multiple longitudinal pipelines connected with the solar collecting panel and communicated with two parallel horizontal pipelines at an upper portion of the longitudinal pipelines. The two horizontal pipelines are respectively a liquid pipe and a steam pipe. The bottoms of the longitudinal pipelines on the solar collector is communicated with a horizontal bottom liquid pipe, the horizontal liquid pipe and steam pipe at the upper portion are respectively introduced into the water tank having heat exchange, the liquid pipe is communicated with an upper end port of a coiled pipe inside the water tank having heat exchange, and the steam pipe is communicated with a lower end port of the coiled pipe. According to the solar system, the heat can be efficiently transmitted from the solar collector to the hot stored water tank without consuming electric energy; the contradiction between block and phase change caused by liquid level of working medium in the solar collector is solved by the two parallel pipelines at the upper portion; the problem that the steam pipe is blocked by the liquid working medium is solved by a by-pass flow pipe; and the blocking problem caused by noncondensable gas is solved by a noncondensable steam chamber.

Description

The solar energy system of collecting with phase-change type heat

Technical field

The invention belongs to technical field of solar, relate more specifically to a kind of solar energy system of collecting with phase-change type heat.

Background technology

Along with improving constantly of living standards of the people, it is one of technology that in new and renewable sources of energy, commercialization degree is the highest, application is the most general that solar energy utilizes particularly heat utilization, energy-conservation and the environmental benefit that its utilization brings is huge, the solar water heater industry of China was begun to take shape in the later stage eighties 20th century, family's quantity that present China has solar water heater is many, total owning amount accounts for 1/ 4 of world's total amount, by internationally recognized be the country that solar water heater production is maximum, potential market is maximum.The heat transmission of now traditional solar water heater, by working medium (water) circulation, is reached heat is delivered to heat storage water tank from solar collector by free convection or forced circulation.But free convection weak effect, and forced circulation needs water pump and controller, and need power consumption.

The conversion efficiency of current solar photovoltaic assembly is relatively on the low side (15 ~ 20%), and most of luminous energy becomes heat, therefore has the space of heat utilization.But in order not make the temperature of photovoltaic cell too high and affect efficiency, the High Efficiency Thermal conduction of assembly and water tank is even more important.

Heat conduction with phase change can improve heat conducting efficiency greatly.The heat that on the one hand Working fluid phase changing absorbed or discharged is much higher than and changes entrained heat by Temperature of Working (for example heat of vaporization of 1 gram of water is 539 cards, and water intensification was once only having 1 card), flowing velocity in its pipeline of working medium of vaporization is very fast on the other hand, can approach the velocity of sound, and not need the promotion of external force (as water pump).

Patent CN 101915464 A disclose a kind of phase change thermal storage solar water heater, and it has described two phase transition process, and the one, phase-transition heat-storage (the present invention does not relate to), the 2nd, heat conduction with phase change.Can there are two serious practical problems in the method for its described heat conduction with phase change.On the one hand the phase transformation that causes of the medium level position in solar collector and the contradiction of obstruction; The blockage problem being caused by on-condensible gas on the other hand.The too low area undergoing phase transition of medium level in solar collector is too small, causes heat absorption efficiency poor, also can make upper temp too high; And liquid level too Gao Zehui make worker quality liquid flow into top steam pipe and result in blockage.In the practical application of system, conventionally have on-condensible gas, on-condensible gas also can hinder the unimpeded of pipeline.And patent CN 101915464 A do not mention this problem or propose solution.

 

Summary of the invention

1, object of the present invention.

The present invention is not good in order to solve in prior art Natural Circulation heat-conductive characteristic, and forced circulation needs the problem of the optional equipments such as water pump and consumption electric energy, and a kind of solar energy system of collecting with phase-change type heat proposing, it has further solved phase transformation and the contradiction stopping up and the problem that stops up being caused by on-condensible gas that the medium level position in solar collector causes.

2, the technical solution adopted in the present invention.

The solar energy system of collecting with phase-change type heat, form by solar collector (101) with the water tank (102) of heat exchange, solar collector (101) comprises solar collection panels (7) and many pipe tunnels that are attached thereto, and communicate with two parallel, horizontal pipelines on pipe tunnel top, article two, horizontal pipe is respectively liquid pipe (1) and steam pipe (2), pipe tunnel bottom on solar collector (101) is communicated with a horizontal bottom liquid pipe (6), steam pipe (2) and liquid pipe (1) are introduced respectively in the water tank (102) with heat exchange, wherein steam pipe (2) is communicated with coil pipe (4) upper port of water tank (102) inside with heat exchange, liquid pipe (1) is communicated with coil pipe (4) lower port, in pipeline, there is the heat-transfer working medium that can undergo phase transition.

In a specific embodiment, in solar collection panels, have solar energy absorbing coating, by transform light energy be heat energy and pass to coupled longitudinally and horizontal pipe.

In another specific embodiment, in solar collection panels, there is solar cell, luminous energy is converted to electric energy and heat energy simultaneously, and gives coupled longitudinal and horizontal pipe by thermal energy transfer.

In another specific embodiment, two parallel, horizontal pipelines on described pipe tunnel top are respectively liquid pipe (1) and steam pipe, and steam pipe (2) is on liquid pipe (1).

In figure, the region of drawn solar collection panels does not comprise top steam pipe 2 and bottom liquid pipe 1, but can comprise these two pipes coupled yet.

The top of described coil pipe (4) is communicated with one for collecting the fixed gas chamber (5) of on-condensible gas.In a specific embodiment, top, fixed gas chamber (5) becomes arcuation with bottom.

In another specific embodiment, described fixed gas chamber (5) is circular or oval.

In another specific embodiment, more than one solar collector (101) is connected with bottom liquid pipe (6) with steam pipe (2) by the liquid pipe (1) at top.

In another specific embodiment, in the pipe tunnel outside of solar collector (101), a longitudinal by-pass flow pipe (3) is installed, connect the steam pipe (2) at top and the liquid pipe (1) of bottom.

3, beneficial effect of the present invention.

(1), by design of the present invention, can very efficiently heat be delivered to heat storage water tank from solar collector, and can save water pump and additional control appliance thereof, and not need to consume electric energy;

(2) design of two, top of the present invention parallelpiped (steam pipe and liquid pipe) can solve phase change efficiency that the medium level position in solar collector causes and the contradiction of obstruction;

(3) arranging of by-pass flow pipe of the present invention can be got rid of liquid working substance and stop up the problem of steam pipe;

(4) arranging of not condensing of the present invention chamber got rid of the blockage problem being caused by on-condensible gas.

Brief description of the drawings

Fig. 1 is structure chart of the present invention.

101-solar collector, 102-is with the water tank of heat exchange, 1-liquid pipe, 2-steam pipe, 3-by-pass flow pipe, 4-coil pipe, 5-fixed gas chamber, 6-bottom liquid pipe, 7-solar collection panels.

Detailed description of the invention

For the auditor that the makes Patent Office especially public can be expressly understood technical spirit of the present invention and beneficial effect more, applicant elaborates the mode with embodiment below, but be not all the restriction to the present invention program to the description of embodiment, any done according to the present invention design only for pro forma but not substantial equivalent transformation all should be considered as technical scheme category of the present invention.

Embodiment 1

A kind of solar energy system of collecting with phase-change type heat forms by solar collector with the water tank of heat exchange.Solar collector can be solar thermal collector or photovoltaic-photothermal integrated collector.In solar thermal collector, having one or more pieces collector panels with solar energy absorbing coating is heat energy by transform light energy; And in photovoltaic-photothermal integrated collector, collector panels has photovoltaic cell that luminous energy is converted to electric energy and heat energy simultaneously.There are multiple working medium passages that heat is taken away in the behind of solar collection panels.

As shown in Fig. 1, many pipelines that have solar collection panels 7 on solar collector 101 and be attached thereto, comprise many pipe tunnels, two parallel, horizontal pipelines that communicate with its top (are respectively liquid pipe 1 and steam pipe 2, steam pipe 2 is on liquid pipe 1), and an and horizontal bottom liquid pipe 6 of pipe tunnel bottom connection.Dotted line in figure has defined the border of solar collector 101.Multiple solar collectors 101 are connected with bottom liquid pipe 6 with steam pipe 2 by the liquid pipe 1 at top.

Steam pipe 2 and liquid pipe 1 are introduced respectively in the water tank 102 with heat exchange, and wherein steam pipe 2 is communicated with coil pipe 4 upper port of water tank 102 inside with heat exchange, and liquid pipe 1 is communicated with coil pipe 4 lower port.

Embodiment 2

On the basis of embodiment 1, it is fixed gas chamber 5 that the top of described coil pipe 4 is communicated with a cavity, be used for collecting on-condensible gas, 5 tops, preferred fixed gas chamber become arcuation with bottom, fixed gas chamber 5 also can be spheroidal or elliposoidal, is convenient to better collect presumable on-condensible gas and bear hydraulic pressure.

Embodiment 3

On the basis of embodiment 1 or 2, in the pipe tunnel outside of solar collector 101, a longitudinal by-pass flow pipe 3 is installed, connect the steam pipe 2 at top and the liquid pipe 1 of bottom.The liquid working substance that may exist in steam pipe 2 is flowed to bottom liquid pipe 6 by by-pass flow pipe 3, reduced the bad interference to the circulatory system.

The course of work of the present invention:

Liquid working substance in pipe tunnel in solar collector and bottom liquid pipe is vaporized under the effect of solar heat; The working medium of vaporization flow to the top of water tank coil pipe by the steam pipe at top.Due to the setting of by-pass flow pipe, the liquid working substance that may carry in steam pipe flows to the liquid pipe of bottom from by-pass flow pipe.The vaporization working medium that enters water tank coil pipe is gone forward side by side into the top liquid pipe of solar collector through leaving water tank after cooling liquid.On-condensible gas upwards enters the fixed gas chamber on coil pipe.In the time that the worker quality liquid of solar collection module inner top liquid pipe trickles from top to down, it is all wetting by tube wall upper and lower solar collector, absorbs heat, and vaporization again, is sent in steam pipe, so circulation.

Compared with non-Phase Transition Systems (nature or forced circulation), the present invention has more superior heat-conductive characteristic.The heat that phase transformation itself absorbed or discharged substantially exceeds the heat that Temperature of Working changes.And forced circulation need to consume electric energy conventionally, and working medium circulation of the present invention does not need to consume electric energy.

Claims (8)

1. a solar energy system of collecting with phase-change type heat, it is characterized in that: form by solar collector (101) with the water tank (102) of heat exchange, on solar collector (101), comprise solar collection panels (7) and many pipe tunnels that are attached thereto, and communicate with two parallel, horizontal pipelines on pipe tunnel top, article two, horizontal pipe is respectively liquid pipe (1) and steam pipe (2), pipe tunnel bottom on solar collector (101) is communicated with a horizontal bottom liquid pipe (6), steam pipe (2) and liquid pipe (1) are introduced respectively in the water tank (102) with heat exchange, wherein steam pipe (2) is communicated with coil pipe (4) upper port of water tank (102) inside with heat exchange, liquid pipe (1) is communicated with coil pipe (4) lower port, in pipeline, there is the heat-transfer working medium that can undergo phase transition.
2. the solar energy system of collecting with phase-change type heat according to claim 1, it is characterized in that: on the panel in solar collector (101), have solar energy absorbing coating, by transform light energy be heat energy and pass to coupled longitudinally and horizontal pipe.
3. the solar energy system of collecting with phase-change type heat according to claim 1, it is characterized in that: on the panel in solar collector (101), have solar cell, luminous energy is converted to electric energy and heat energy simultaneously, and gives coupled longitudinal and horizontal pipe by thermal energy transfer.
4. according to claim 1,2,3 arbitrary described solar energy systems of collecting with phase-change type heat, it is characterized in that: two parallel, horizontal pipelines on described pipe tunnel top are respectively liquid pipe (1) and steam pipe, and steam pipe (2) is on liquid pipe (1).
5. the solar energy system of collecting with phase-change type heat according to claim 4, is characterized in that: be communicated with one for collecting the fixed gas chamber (5) of on-condensible gas at the top of described coil pipe (4), top, fixed gas chamber (5) becomes arcuation with bottom.
6. the solar energy system of collecting with phase-change type heat according to claim 4, is characterized in that: described fixed gas chamber (5) is spheroidal or elliposoidal.
7. according to claim 1,2,3 arbitrary described solar energy systems of collecting with phase-change type heat, it is characterized in that: more than one solar collector (101) is connected with bottom liquid pipe (6) with steam pipe (2) by the liquid pipe (1) at top.
8. according to claim 1,2,3 arbitrary described solar energy systems of collecting with phase-change type heat, it is characterized in that: a longitudinal by-pass flow pipe (3) is installed in the pipe tunnel outside at solar collector (101), connects the steam pipe (2) at top and the liquid pipe (1) of bottom.
CN201410112883.5A 2013-03-30 2014-03-25 Solar system having phase-change type heat collection CN104019566A (en)

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US61806839 2013-03-30

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104019566A (en) * 2013-03-30 2014-09-03 庞怡 Solar system having phase-change type heat collection

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0043227A2 (en) * 1980-06-26 1982-01-06 Wilfred Sorensen A heat actuated system for circulating heat transfer fluids
CN2913962Y (en) * 2006-04-13 2007-06-20 喜春野 Building-integrated hyperconductive flat-plate solar energy hot-water apparatus
CN102062483A (en) * 2009-11-13 2011-05-18 陆明华 Solar plane grid type superconductive water heater
CN202869028U (en) * 2012-10-29 2013-04-10 常州市康舒环境科技有限公司 Power driving and separation heat pipe split type panel solar water heater
CN204141867U (en) * 2013-03-30 2015-02-04 庞怡 With the solar energy system of phase-change type heat collection

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0043227A2 (en) * 1980-06-26 1982-01-06 Wilfred Sorensen A heat actuated system for circulating heat transfer fluids
CN2913962Y (en) * 2006-04-13 2007-06-20 喜春野 Building-integrated hyperconductive flat-plate solar energy hot-water apparatus
CN102062483A (en) * 2009-11-13 2011-05-18 陆明华 Solar plane grid type superconductive water heater
CN202869028U (en) * 2012-10-29 2013-04-10 常州市康舒环境科技有限公司 Power driving and separation heat pipe split type panel solar water heater
CN204141867U (en) * 2013-03-30 2015-02-04 庞怡 With the solar energy system of phase-change type heat collection

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Application publication date: 20140903