CN102679434B - Solar phase change heat storage and capillary network radiation heating system - Google Patents

Solar phase change heat storage and capillary network radiation heating system Download PDF

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CN102679434B
CN102679434B CN201210019463.3A CN201210019463A CN102679434B CN 102679434 B CN102679434 B CN 102679434B CN 201210019463 A CN201210019463 A CN 201210019463A CN 102679434 B CN102679434 B CN 102679434B
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stop valve
heat
heating
capillary network
solar
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CN201210019463.3A
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CN102679434A (en
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赵民
王赞社
顾兆林
冯诗愚
李云
季伟
周敏
薛洁
罗昔联
孟祥兆
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中国建筑西北设计研究院有限公司
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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
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/20Solar thermal

Abstract

The invention belongs to the field of application of heating ventilation air conditioning technologies, relates to an indoor thermal comfort regulating and system energy saving process and particularly relates to a solar phase change heat storage and capillary network radiation heating system. The solar phase change heat storage and capillary network radiation heating system consists of a solar heat collecting module (I), a phase change heat storage module (II), a capillary network radiation heating module (III) and other auxiliary devices, wherein the solar heat collecting module (I) includes a solar heat collector (1); the phase change heat storage module (II) includes a phase change heat storage and release device (2); the capillary network radiation heating module (III) includes a capillary network low-temperature radiation heating network (7); and other auxiliary devices comprise an auxiliary heater box (6), a heat-insulating water storage tank (8), a circulating water pump (9), a pipeline tee joint (10), a pipeline tee joint (14), a pipeline tee joint (15), a cut-off valve (3), a cut-off valve (4), a cut-off valve (5), a cut-off valve (11), a cut-off valve (12), a cut-off valve (13) and the like; and the functions of saving energy and raising the thermal comfort of an indoor environment are achieved by fully utilizing solar resources.

Description

A kind of solar energy phase transition heat accumulation and capillary network panel type heating system

Technical field

The invention belongs to HVAC technical applications, relate to indoor thermal comfort degree and regulate and energy saving of system process, particularly a kind of solar heat-preservation and capillary network panel type heating system.

Background technology

Energy shortage and environmental pollution are the matters of utmost importance of 21st century facing mankind, greatly developing energy-conserving and emission-cutting technology in each field, seek the only way that the alternative day by day traditional fossil energy of exhaustion of clean reproducible energy is considered to Future Social Development, is also one of technique direction of giving priority in National Program for Medium-to Long-term Scientific and Technological Development.This has comprised two layers of meaning, and the one, power-saving technology and the system of development traditional energy, the 2nd, find new forms of energy and make full use of regenerative resource.Building energy consumption is the important component part of entire society's energy consumption link, and energy consumption taking heating air conditioning as representative accounts for 50% left and right of building total energy consumption.Heating equipment not only consumes the fossil energies such as a large amount of coal, natural gas, fuel oil every year, and can produce serious environmental pollution and the concentrated problem that exceeds standard of carbon emission.Development energy-saving building technology is most important to reducing the energy resource consumption of entire society and reducing the gentle solution of carbon emission environmental pollution pressure.The means of development building energy conservation are started with from two aspects equally, the one, development reduces the method for the consumption (as wall thermal insulating, glass heat-proof, rationally building structure etc.) of the energy, and the 2nd, use regenerative resource and reduce the consumption (as solar energy utilization, earth source heat pump, water resource heat pump, air source heat pump etc.) to traditional fossil energy.

The northern area of China solar radiation distributes very abundant.Take Xi'an as example, Xi'an is the south in cold district in thermal technology's subregion, the coldest monthly mean temperature 0~-10 DEG C, and Heating Period has four months, and the energy consumption that heating consumes accounts for 50% of whole building energy consumption.Per day total radiation between heating period can reach 5-10MJ/m 2, solar energy has important value.But solar energy is a kind of unsettled energy, affected by the factors such as season, meteorology, region larger, at especially night, cannot provide sufficient and lasting energy supply.The biggest obstacle of solar energy scale heat utilization is at present that obtaining of solar energy is limited by climatic factor, and can not round-the-clock stable heating.Solar heat-preservation technology is utilized the phase-transition heat-storage of heat-storing material, can effectively reduce the required volume of energy accumulation, can realize fully and continually and steadily utilizing of solar energy, is the good approach addressing this problem.

Capillary network radiation refrigeration technology has progressively obtained application in high-end residential and public building, and be about to become one of the important way of summer cooling and direction of development, and the idle investment that also can bring problems and greatly increase air-conditioning system of capillary network in the winter time.Low-temp radiation heating technological borrowing radiation cooling technology and floor heating technology, taking surface or dark deposited plastic material capillary network as radiation tail end device, rely on capillary network that larger radiation heat transfer area and uniform wall surface temperature is provided, reach the comfortable heating effect without blowing feeling.Another distinguishing feature of capillary network is that pipeline medium flow velocity is low, the heat transfer temperature difference of importing and exporting is less, generally only has 2-4 DEG C, according to China's Heating Design standard, winter, indoor heating design temperature was 18-20 DEG C, and therefore, in capillary network, the temperature of heating medium can be between 30-35 DEG C, greatly reduce the requirement to heating medium temperature, for the utilization of low-grade energy provides feasibility.

For above present situation, the present invention proposes the design of heating system mode that solar heat-preservation system combines with capillary network tail-end low-temp radiation heating system, by heat storage technology, solar energy is made full use of and stored on the one hand, effectively utilize this renewable and clean energy resource of solar energy, realize round-the-clock ground heating requirement; On the other hand, in conjunction with the little heat transfer temperature difference in capillary network low-temp radiation heating, improve whole system energy utilization rate.

Patent " utilizing the capillary network heat pump system of solar energy " (number of patent application: 201010509782.3) disclose a kind of capillary network heat pump system that utilizes solar energy, be applicable to central air conditioner system, this system utilizes heat pump to improve water temperature (28-32 DEG C) when climatic environment is severe is in the winter time delivered to capillary network system, the impact of the easy climate of this system, source pump can be affected in lower its efficiency of area of northern environment temperature.Patent " solar energy, heat pump and capillary network compound hot water heating/refrigerating device " (number of patent application: 201010611919.6, utility application number: 201020687271.6) disclose a kind of solar energy, heat pump and capillary network compound hot water heating/refrigerating device, this device adopts heat storage water tank to store the energy of solar energy, in the time that water tank temperature is not enough, utilize water resource heat pump to promote the temperature of water tank, this device belongs to sensible heat storage for the storage of solar energy, the volume of heat storage water tank is larger, can cause system huge, should not effectively promote.Patent " utilizing the indoor geothermal heating structure of capillary network and phase change heat storage material " (number of patent application: 201110190676.8) disclose a kind of indoor geothermal heating structure that utilizes capillary network and phase change heat storage material, this structure is located at phase change heat storage material and capillary network equipment-laid under user floor, and phase change heat storage material is laid on the expand with heat and contract with cold destruction to user floor and the inconvenient maintenance of bringing that the potential hazard bringing under user floor is heat-storing material by this structure.Patent " a kind of independent new energy building energy conservation integrated system " (number of patent application: 201120081136.1), 201110160980.8) and patent " central air-conditioning system of capillary network tail-end water source heat pump " (number of patent application: 201010509781.9 patent " a kind of energy-saving comfortable air-conditioning system and method for work thereof " (number of patent application:, utility model application number: 201020564714.2) all proposed earth source heat pump or water source heat pump system and solar energy, the heating system that capillary network system coordinates, although this frame mode has also utilized solar energy, but still must open heat pump in the time period at night and carry out makeup energy, and systematic comparison complexity.Patent " a kind of Novel air-conditioning system for top plate of capillary tube of ground source heat pump " (number of patent application: 200920350744.0) announced a kind of Novel air-conditioning system for top plate of capillary tube of ground source heat pump based on solution dehumidification, this system directly utilizes earth source heat pump for thermal source, does not use this clean energy resource of solar energy.

In order effectively to utilize this clean energy resource of solar energy, increase the hot comfort of indoor environment, must obtain from energy elementary, the intermediate storage of energy and the end of energy use three links to solve.

Summary of the invention

The present invention is directed in order effectively to utilize this clean energy resource of solar energy, from energy elementary obtain, the intermediate storage of energy and three links of the end of energy design.And make full use of the less demanding this advantage of capillary network low temperature radiation heating to heat source temperature, and make full use of solar energy resources, realize function energy-conservation and raising indoor environment hot comfort.

A kind of solar energy phase transition heat accumulation and capillary network panel type heating system, this system is made up of solar energy heat collecting module I, phase transformation heat-storage module II, capillary network radiant heating module ii I and other auxiliary equipment.Described solar energy heat collecting module I contains solar thermal collector 1; Described phase transformation heat-storage module II contains phase-transition heat-storage, phase transformation radiator 2; Described capillary network radiant heating module ii I contains capillary network low-temp radiation heating network 7; Described other auxiliary equipment comprise auxiliary heater case 6, heat preservation storage water tank 8, water circulating pump 9, pipeline threeway 10,14,15, stop valve 3,4,5,11,12,13 etc.

Under solar radiation on daytime adequate condition, system can supply warm heat accumulation function, and the switch situation of stop valve is: stop valve 3,4,12,13 is opened, and stop valve 11,5 is closed; Auxiliary heater 6 is not opened.Concrete flow process is: the hot water that solar thermal collector 1 exports enters threeway 15, the stop valve 4 of leading up to enters auxiliary heater 6, then entering capillary network low-temp radiation heating network 7 carries out entering heat preservation storage water tank 8 after low-temp radiating heat exchange, then after water circulating pump 9, enter threeway 10, enter again stop valve 12, after flowing into threeway 14, get back in solar thermal collector 1, realize heating function on daytime.Separately lead up to and enter in phase-transition heat-storage, phase transformation radiator 2 and carry out accumulation of heat after stop valve 3, complete entering stop valve 13 after accumulation of heat and flow into threeway 14, return in solar thermal collector 1, realize heat accumulation function.

If do not need heating daytime, while only carrying out heat accumulation function, stop valve 4,12 is closed, and other flow processs are identical with above-mentioned flow process.

Night, while heating, stop valve 3,4,12,13 was closed, and stop valve 11,5 is opened.Concrete flow process is: the water from heat preservation storage water tank 8 enters threeway 10 after water circulating pump 9, enter again stop valve 11, enter in phase-transition heat-storage, phase transformation radiator 2 and carry out heat exchange intensification, then flowing through stop valve 5 enters in auxiliary heater 6, then enter capillary network low-temp radiation heating network 7 and carry out entering heat preservation storage water tank 8 after heat exchange, complete the heating function at night.

If daytime, solar radiation was in poor shape, when system has been failed enough accumulation of heats, when heat night, opens auxiliary heater 6 and carry out auxiliary heating heating.Its flow process is identical with the flow process of heating at night.

Wherein, phase-transition heat-storage, phase transformation radiator 2 adopt hot-water line and the staggered mode of cold water pipe to be distributed in phase-transition heat-storage, phase transformation radiator 2.

The present invention utilizes the solar water heater technology of existing maturation, under existing solar energy heating actuator temperature, utilize the low-temp radiating characteristic of phase-transition heat-storage technology and capillary network to realize the secondary distribution of cascade utilization and the energy of low-grade heat source, improve the utilization ratio of heat.

Brief description of the drawings

Below in conjunction with accompanying drawing, structural principle of the present invention and operation principle are described in further detail:

Fig. 1 is structure principle chart of the present invention.

In figure: 1, solar thermal collector; 2, phase transformation radiator; 3,4,5,11,12,13, stop valve; 6, auxiliary heater; 7, heating network; 8, heat preservation storage water tank; 9, water circulating pump; 10,14,15 threeways.

Detailed description of the invention

With reference to Fig. 1, principle of the present invention is:

Under solar radiation on daytime adequate condition, system can supply warm heat accumulation function, and the switch situation of stop valve is: stop valve 3,4,12,13 is opened, and stop valve 11,5 is closed; Auxiliary heater 6 is not opened.Concrete flow process is: the hot water that solar thermal collector 1 exports enters threeway 15, the stop valve 4 of leading up to enters auxiliary heater 6, then entering capillary network low-temp radiation heating network 7 carries out entering heat preservation storage water tank 8 after low-temp radiating heat exchange, then after water circulating pump 9, enter threeway 10, enter again stop valve 12, after flowing into threeway 14, get back in solar thermal collector 1, realize heating function on daytime.Separately lead up to and enter in phase-transition heat-storage, phase transformation radiator 2 and carry out accumulation of heat after stop valve 3, complete entering stop valve 13 after accumulation of heat and flow into threeway 14, return in solar thermal collector 1, realize heat accumulation function.

If do not need heating daytime, while only carrying out heat accumulation function, stop valve 4,12 is closed, and other flow processs are identical with above-mentioned flow process.

Night, while heating, stop valve 3,4,12,13 was closed, and stop valve 11,5 is opened.Concrete flow process is: the water from heat preservation storage water tank 8 enters threeway 10 after water circulating pump 9, enter again stop valve 11, enter in phase-transition heat-storage, phase transformation radiator 2 and carry out heat exchange intensification, then flowing through stop valve 5 enters in auxiliary heater 6, then enter capillary network low-temp radiation heating network 7 and carry out entering heat preservation storage water tank 8 after heat exchange, complete the heating function at night.

If daytime, solar radiation was in poor shape, when system has been failed enough accumulation of heats, when heat night, opens auxiliary heater 6 and carry out auxiliary heating heating.Its flow process is identical with the flow process of heating at night.

Wherein, phase-transition heat-storage, phase transformation radiator 2 adopt hot-water line and the staggered mode of cold water pipe to be distributed in phase-transition heat-storage, phase transformation radiator 2, and object is in order to improve heat exchange efficiency.

The above, it is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with preferred embodiment, but not in order to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, when can utilizing the method for above-mentioned announcement and technology contents to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solution of the present invention, any simple modification of above embodiment being done according to technical spirit of the present invention, equivalent variations and modification, still belong in the scope of technical solution of the present invention.

Claims (2)

1. solar energy phase transition heat accumulation and a capillary network panel type heating system, is characterized in that: this system is made up of solar energy heat collecting module (I), phase transformation heat-storage module (II), capillary network radiant heating module (III) and other auxiliary equipment; Described solar energy heat collecting module (I) contains solar thermal collector (1); Described phase transformation heat-storage module (II) contains phase-transition heat-storage, phase transformation radiator (2); Described capillary network radiant heating module (III) contains capillary network low-temp radiation heating network (7); Described other auxiliary equipment comprise auxiliary heater case (6), heat preservation storage water tank (8), water circulating pump (9), first threeway (10) of pipeline, the second threeway (14), the 3rd threeway (15), the first stop valve (3), the second stop valve (4), the 3rd stop valve (5), the 4th stop valve (11), the 5th stop valve (12), the 6th stop valve (13);
Under solar radiation on daytime adequate condition, system can supply warm heat accumulation function, the switch situation of stop valve is: the first stop valve (3), the second stop valve (4), the 5th stop valve (12), the 6th stop valve (13) are opened, and the 4th stop valve (11), the 3rd stop valve (5) are closed; Auxiliary heater (6) is not opened; Concrete flow process is: the hot water of solar thermal collector (1) outlet enters the 3rd threeway (15), the second stop valve (4) of leading up to enters auxiliary heater (6), then entering capillary network low-temp radiation heating network (7) carries out entering heat preservation storage water tank (8) after low-temp radiating heat exchange, then after water circulating pump (9), enter the first threeway (10), enter again the 5th stop valve (12), after flowing into the second threeway (14), get back in solar thermal collector (1), realize heating function on daytime; Separately lead up to after the first stop valve (3) enter phase-transition heat-storage, phase transformation radiator carries out accumulation of heat in (2), completes to enter the 6th stop valve (13) after accumulation of heat and flow into the second threeway (14), returns in solar thermal collector (1), realizes heat accumulation function;
If do not need heating daytime, while only carrying out heat accumulation function, the second stop valve (4), the 5th stop valve (12) are closed, and other flow processs are identical with above-mentioned flow process;
Night, while heating, the first stop valve (3), the second stop valve (4), the 5th stop valve (12), the 6th stop valve (13) were closed, and the 4th stop valve (11), the 3rd stop valve (5) are opened; Concrete flow process is: the water from heat preservation storage water tank (8) enters the first threeway (10) after water circulating pump (9), enter again the 4th stop valve (11), enter phase-transition heat-storage, phase transformation radiator carries out heat exchange intensification in (2), then flowing through the 3rd stop valve (5) enters in auxiliary heater (6), then enter capillary network low-temp radiation heating network (7) and carry out entering heat preservation storage water tank (8) after heat exchange, complete the heating function at night;
If daytime, solar radiation was in poor shape, when system has been failed enough accumulation of heats, when heat night, opens auxiliary heater (6) and carry out auxiliary heating heating; Its flow process is identical with the flow process of heating at night.
2. a kind of solar energy phase transition heat accumulation according to claim 1 and capillary network panel type heating system, is characterized in that: phase-transition heat-storage, phase transformation radiator (2) adopt hot-water line and the staggered mode of cold water pipe to be distributed in phase-transition heat-storage, phase transformation radiator (2).
CN201210019463.3A 2012-01-21 2012-01-21 Solar phase change heat storage and capillary network radiation heating system CN102679434B (en)

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CN104930729A (en) * 2015-06-26 2015-09-23 甘肃省建材科研设计院 Solar middle temperature hot air system storing heat by means of phase-change materials
CN106871211A (en) * 2016-08-31 2017-06-20 中益能(北京)技术有限公司 Phase-changing energy-storing heating plant and storing energy and supplying hot method
CN106765452B (en) * 2016-11-22 2019-05-10 中国建筑科学研究院 A kind of heat accumulating type capillary network panel type heating system using solar energy
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CN109611937A (en) * 2018-11-27 2019-04-12 中国建筑西北设计研究院有限公司 A kind of solar energy earth source heat pump and phase-transition heat-storage coupling heating system and control method

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