CN102901241B - Novel circulating and displacement type heat exchange method - Google Patents
Novel circulating and displacement type heat exchange method Download PDFInfo
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- CN102901241B CN102901241B CN201210430322.0A CN201210430322A CN102901241B CN 102901241 B CN102901241 B CN 102901241B CN 201210430322 A CN201210430322 A CN 201210430322A CN 102901241 B CN102901241 B CN 102901241B
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Abstract
A novel circulating and displacement type heat exchange method comprises the steps of: entering a solar-energy water heater system in batches at intervals by low-temperature tap water, wherein water inflow in each batch or interval time among batches are automatically controlled by the solar-energy water heater system; firstly flowing into a mixer by the tap water entering the system in each batch, and becoming intermediate-temperature water in the mixer; displacing hot water in a heat-collecting device by the intermediate-temperature water through energy of the tap water per se, staying in the heat-collecting device by the intermediate-temperature water, and waiting the beginning of the next batch; and heating the intermediate-temperature water every time by the heat-collecting device rather than heating the low-temperature tap water, wherein the heating speed is quicker, the heat exchange efficiency is higher, and the high-speed and efficient heat exchange enables the time of the hot water staying in a connected pipeline to be greatly shortened. Under the condition of zero power consumption, on one hand, the thermal efficiency of a split-type solar-energy water heater is greatly improved by adopting the method, and on the other hand, the relative distance between the heat-collecting device and a hot water storage tank of the split-type solar-energy water heater can be extended by several ten times. The novel circulating and displacement type heat exchange method has favourable social and economic popularization benefits.
Description
Technical field
The present invention relates to a kind of brand-new cyclic permutation heat-exchange method, belong to solar energy heat utilization field.
Background technology
The people of solar water heater application is more and more, solar water heater has two large critical components, is respectively heat collector and heat storage water tank, and heat collector is responsible for absorption solar energy as much as possible, heat as early as possible the medium in heat collector, heat storage water tank is as far as possible for a long time hot water to be incubated to storage.Improve the thermal efficiency of solar water heater, also must solve a key issue, be exactly heat exchange, that is to say and how the high temperature thermal medium in heat collector is sent to heat in heat storage water tank as far as possible rapidly, will prevent the heat loss in heat transfer process simultaneously.Can understand like this and there is no efficient heat exchange, the performance of solar water heater just cannot effectively improve.
The heat-exchange method of summing up the solar water heater in existing market, has so several: the first, Natural Circulation heat-exchange method; The second, forced circulation heat-exchange method; The third is the displacement heat-exchange method that this patent people proposes.Natural Circulation heat-exchange method carries out heat exchange according to the high low temperature density variation of medium, in integral vacuum tube solar water heater, has very extensively and successfully application, and be ripe and economic heat-exchange method.Forced circulation heat exchange method, in solar water heater Engineering Market application many, according to the water temperature difference that detects heat collector and heat storage water tank, the water pump operation in controlled circulation water route and stop carrying out heat exchange.But these two kinds of heat-exchange methods, graft application just cannot be efficiently with economical in separated solar water heater, both connection frameworks are different, the place of even installing and applying is also different, the problem existing is: problem one separated solar water heater adopts Natural Circulation heat-exchange method, two thin heat exchange pipelines between restricted and heat collector and heat storage water tank, heat exchange efficiency significantly declines, and because the horizontal and vertical distance between heat collector and heat storage water tank is all very restricted, bring the puzzlement of installation and use; If problem diad solar water heater adopts forced circulation heat exchange, heat exchange efficiency has improved, but cost is too high, and the problem of power consumption, noise cannot solve again.For separated solar water heater this patent people, propose to adopt displacement heat-exchange method, but in some occasion, also there is place not fully up to expectations in this heat-exchange method, has and there is no better heat-exchange method, meets the market demand of separated solar water heater.
Summary of the invention
The technical solution adopted for the present invention to solve the technical problems is, a kind of brand-new cyclic permutation heat-exchange method, the method is that the running water of low temperature enters solar water heater system in interval in batches, the inflow of every batch or batch interval time by system, automatically controlled, every batch of running water that enters system always first flow into a blender, in blender, the low temperature running water flowing into and flow out from the circulating outlet of heat storage water tank the hot water that enters into blender and fully mix, mixed middle warm water is under the pressure of running water, by pipeline, flow in heat collector, completed the hot water that is heated to predetermined temperature in heat collector, by pipeline, be sent in heat storage water tank and store, and just now flowed into the middle warm water of heat collector, because temperature does not reach predetermined temperature, oneself is trapped in heat collector, wait for the water inlet heat exchange of next batch, this each middle warm water occupies the process of heat collector, is exactly a replacement process, middle warm water in heat collector, by constantly absorbing solar energy, water temperature in heat collector constantly increases, when the water temperature of the middle warm water in heat collector arrives the hot water of predetermined temperature, the pipeline water flow in system restarts to flow, and another batch of the running water of low temperature enters solar water heater system, start the new process of once mixing, replacing with circulating hot water, and so forth, until heat storage water tank is by multiple batches of heat exchange, till heat storage water tank hot water is full.
Every batch change and comprise three steps wherein, the first step, the low temperature running water that enters system mixes with the hot water that heat storage water tank circulating outlet flows into, and the outflow of the inflow of running water and heat storage water tank circulation port is synchronously carried out, and both flow and stop together together; Second step, the middle warm water of Wen Hehou relies on the pressure of running water, and the hot water that has been heated to predetermined temperature in heat collector, all displacement is in heat storage water tank, and the closedown of pipeline in system, causes the middle warm water of itself to be trapped in heat collector; The 3rd step, is trapped in the middle warm water in heat collector, constantly absorbs solar energy improve water temperature by heat collector, when in heat collector, the temperature of water reaches predetermined temperature, pipeline in system reopens, and ducted current restart to flow, and carries out the cyclic permutation of next batch.
Solar water heater system wherein, this system comprises heat collector, heat storage water tank, blender and attemperating unit, and the connecting pipe between each parts, wherein heat collector and the large parts of heat storage water tank two are two relatively independent monomers, the running water water inlet of system is connected on mixer entrance, blender water suction interface is connected with the circulating outlet of heat storage water tank, blender delivery port is connected to heat collector water inlet by pipeline, heat collector delivery port connects an attemperating unit, and the other end of attemperating unit is connected on the water inlet of heat storage water tank by pipeline.Attemperating unit wherein comprises water route switch and TEMP, both can be arranged on a place, also can be installed separately, but TEMP must be arranged on heat collector water outlet, as long as water route switch is serially connected in the pipeline of heat exchange, water route switch carries out switch control according to TEMP.The solar water heater system of this section of description be in the present invention application must comprise the most basic parts and between connection, but application solar water heater system of the present invention can only not comprise above connection and parts, solar water heater system in reality can also increase the connection of parts and corresponding pipeline in pipeline, such as in order to control heat storage water tank water level detecting mechanism, antifreeze breather valve, row's control valve, electric auxiliary heating facility, water-level and water-temperature table, controller etc.
Hence one can see that, in this brand-new cyclic permutation heat-exchange method, low temperature running water enter system unlike the low temperature running water in Natural Circulation heat-exchange method the single batch of disposable water needs heating first all flow in heat storage water tank storage, then by and heat collector between Natural Circulation heat exchange, progressively heat the water in heat storage water tank, water temperature in heat storage water tank is a progressively process for rising, and the water temperature in heat storage water tank is generally uncontrollable; Also unlike in forced circulation heat-exchange method, the low temperature running water first all disposable low temperature running water needs heating all flow in heat storage water tank, then by detecting the water temperature difference in heat collector and heat storage water tank, electric control pump in primer liner, the water circulation of having heated in heat collector is entered to heat storage water tank, cold water circulation in heat storage water tank is entered into heat collector heats, by repeatedly circulating, the temperature difference progressively water in heat storage water tank being warmed between heat collector and heat storage water tank is very little, just stops the circulation of pump; Also unlike in displacement heat-exchange method, low temperature running water directly flows in heat collector, in heat collector, be heated to predetermined temperature, running water flows again, the new low temperature running water flowing into directly enters the hot water displacement in heat collector in heat storage water tank, and the running water of low temperature is trapped in the medium arrival to replace next time to be heated of heat collector.
The invention has the beneficial effects as follows, a kind of brand-new cyclic permutation heat-exchange method, the method is that the running water of low temperature enters solar water heater system in interval in batches, the inflow of every batch or batch interval time by system, automatically controlled, every batch of running water that enters system always first flow into a blender, becomes middle warm water in blender, and middle warm water relies on the self-energy of running water and replaces the hot water in heat collector, middle warm water is trapped in heat collector, waits for the beginning of next batch.What heat collector need to be heated at every turn is all that therefrom warm water starts, rather than starts heating from the running water of low temperature.Firing rate is faster, and heat exchange efficiency is higher, and high-speed and high-efficiency heat exchange makes hot water significantly shorten in the ducted time of staying connecting.Under zero-power state, the method greatly improves the thermal efficiency of separated solar water heater on the one hand, makes on the other hand the heat collector of separated solar water heater and the relative distance between heat storage water tank can extend decades of times.Easily realize separated solar water heater heat collector and be arranged on the south, heat storage water tank is arranged on the north in house.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described further.
Fig. 1 is solar water heater system framework connection diagram of the present invention.
Fig. 2 is the solar water heater system configuration diagram of Natural Circulation heat-exchange method.
Fig. 3 is the typical solar water heater system configuration diagram of forced circulation heat-exchange method.
Fig. 4 is the typical solar water heater system configuration diagram of displacement heat-exchange method.
101. heat storage water tanks in figure, 102. heat collectors, 103. blenders, 104. attemperating units, 105. electric control pumps, 106. controllers, 107. temperature sensor A, 108. temperature sensor B, 200. running water entrances, 201. water tank inlets, 202. water outlet of water tank, 203. circulating outlets, 204. heat collector delivery ports, 205. heat collector water inlets, 208. are recycled into the mouth of a river, 210. mixer entrances, 211. mixer outlets, 212. blender water sucking mouths.
The specific embodiment
Illustrate, for more explicit description feature of the present invention, in diagram, the typical case of the corresponding solar water heater systems of several heat-exchange methods of commonly using in solar water heater at present being connected to framework draws, also more simple and clear characteristic feature of the present invention thus, and different from current heat-exchange method; This diagram is just the connection of associated heat exchange, or the indispensable parts of this heat-exchange method of correspondence draw in the drawings the rower of going forward side by side and show.The present invention does not repel in real solar water heater product, needs some auxiliary interfaces or relevant switch valve or auxiliary equipment.
Fig. 1 is that the present invention is in the application of solar water heater product, typical connection diagram in corresponding solar water heater system, from figure, can understand, the solar water heater in the present invention application is except two large parts of solar water heater routine: heat storage water tank (101) and heat collector (102); Also need two little parts: blender (103) and attemperating unit (104); Each parts connect by pipeline, running water entrance (200) is connected on mixer entrance (210) by pipeline, blender water sucking mouth (212) is connected to the circulating outlet (203) of heat storage water tank (101), mixer outlet (211) is connected to heat collector water inlet (205) by pipeline, heat collector delivery port (204) connects an attemperating unit (104), the opposite side of attemperating unit (104) is connected to the water tank inlet (201) of heat storage water tank (101) by pipeline, the pipeline of heat exchange association has connected.
The major function of each parts in figure, the universal component of heat storage water tank (101) and heat collector (102) industry, no longer describes.Blender (103) also can be called mixing valve, main function is the running water flowing into from mixer entrance (210), being fully mixed into, the hot water flowing out with the circulating outlet (203) of the heat storage water tank (101) sucking from blender water sucking mouth (212) after warm water, from blender delivery port (211) interface, flows out; Blender (103) a kind of making wherein can adopt full mechanical to adopt Venturi tube, just can realize the repertoire of blender (103), also has other manufacture way for blender (103), describes no longer one by one.The main function of attemperating unit (104) is whether the temperature of locating according to detection heat collector delivery port (204) reaches predetermined temperature, controlling the pipeline being serially connected with attemperating unit (104) is flowing of conducting or the middle water of blinding off a line, do not reach predetermined temperature, water route in pipeline is terminated mobile, the water reaching in predetermined temperature pipeline starts to flow, in heat transfer process, be equivalent to a permutator; This device can adopt the TEMP of complete mechanical structure and the temperature-sensing valve of water route switch unification, also can adopt the combination of temperature sensor and magnetic valve, controller, temperature sensor is arranged on heat collector delivery port (204) and locates, as long as magnetic valve is serially connected in pipeline.
A heat exchange overall process of the present invention.If sometime, because the residing temperature of attemperating unit (104) reaches predetermined temperature, the ducted water route of attemperating unit (104) conducting, running water is under the pressure energy of itself, from running water entrance (200), flow into blender (103), the running water now flowing into is cold water, temperature is low, the pressure of running water adds the inner venturi of blender (103) road own, make to locate to produce negative pressure in blender water sucking mouth (212), the suction that negative pressure herein produces, hot water in heat storage water tank (101) is passed through to circulating outlet (203) sucking-off, flow in blender (103), the hot water that suction sucks and the running water of low temperature are mixed into middle warm water, from blender delivery port (211), flow out, by pipeline, flow in heat collector (102), the pressure that flows into the middle warm water dependence running water of heat collector (102) itself is all replaced the hot water that had just now been heated to predetermined temperature in heat collector (102) and is entered storage in heat storage water tank (101), and when the hot water of heat collector (102) has all been replaced, middle warm water flows to the attemperating unit (104) that heat collector delivery port (204) is located, because the water temperature of middle warm water does not arrive predetermined temperature, attemperating unit (104) passage of blinding off a line, middle warm water is trapped in heat collector (102).Middle warm water in heat collector, by heat collector, constantly absorb solar energy, water temperature progressively rises, once water temperature reaches predetermined temperature, after attemperating unit (104) detects, pipeline is conducting again, and the current in pipeline restart to flow, start new round low temperature running water flow into, recycle hot water in heat storage water tank, mix become in warm water, middle warm water displace the hot water that has arrived predetermined temperature in heat collector, middle warm water and be trapped in and in heat collector (102), wait for next batch.And so forth, until heat storage water tank water is full.
From the above course of work, understand, heat-exchange method of the present invention, has several obvious features: the first multiple batches of discontinuity heat exchange; Second each heat exchange all experience running water flow into, recycle the hot water in heat storage water tank, mixed water become in warm water, displace warm water that the hot water in heat collector, replaced hot water enters into heat storage water tank storage, displacement and be trapped in heat collector and wait for next batch; The hot water temperature that the 3rd each displacement enters heat storage water tank is constant temperature hot water; The 4th whole process is except the energy of running water itself, without any intervention or the help of other energy.
Fig. 2 is the typical connection diagram of the corresponding solar water heater of Natural Circulation heat exchange, and this heat-exchange method obtains applying the most widely at present in solar water heater product, adopts the separated solar water heater of anti-icing fluid circulation, just adopts similar framework.Also have most one solar water heaters all to adopt this heat-exchange method.With Fig. 1 comparison, lacked two parts of blender and attemperating unit, during split framework, heat storage water tank must have one simultaneously and recycle interface (203) and one and be recycled into interface (208), and running water entrance flows directly in heat storage water tank in addition.
Fig. 3 is the typical connection diagram of the corresponding solar water heater of forced circulation heat exchange, and this heat-exchange method is widely used in solar heating engineering, or also has such application at process of villa solar water heater.This heat exchange mode evolves in natural circulation mode, mainly solves part place and cannot adopt Natural Circulation heat exchange.Fig. 2 compares, many several parts, the electric control pump of string in water route, two temperature sensors, external controller, the cable of water pump, sensor is all connected on controller corresponding port, controller is the temperature difference of two temperature sensors, control starting mode of pump circulation, until the temperature in heat collector and heat storage water tank about equally, stop such water pump circulation.
Fig. 4 is the typical connection diagram of the corresponding solar water heater of displacement heat exchange.With Fig. 1 comparison, lacked a blender, running water directly flow in heat collector, so this kind of heat exchange mode only has displacement, not circulation.The disposable end that is warmed up to of water in heat storage water tank.Water temperature in heat storage water tank also cannot heat after declining again.
In sum, a kind of brand-new cyclic permutation heat-exchange method, application in separated solar water heater, the low speed that the method makes up in Natural Circulation heat-exchange method is inefficient, make up the expensive power consumption noise in forced circulation heat-exchange method, the water temperature making up in the heat storage water tank in displacement heat-exchange method reduces the problem that cannot again heat.Heat-exchange method of the present invention, firing rate is faster, and efficiency is higher, and can in zero-power situation, realize.
More than set forth basic principle of the present invention and principal character, the present invention is not subject to the restriction of implementing regulations, not departing from improvement and the variation of having done under the prerequisite of basic principle of the present invention and principal character, all should fall into protection scope of the present invention.
Claims (4)
1. a brand-new cyclic permutation heat-exchange method, it is characterized in that: the method is that the running water of low temperature enters solar water heater system in interval in batches, the inflow of every batch or batch interval time by system, automatically controlled, every batch of running water that enters system always first flow into a blender, in blender, the low temperature running water flowing into and flow out from the circulating outlet of heat storage water tank the hot water that enters into blender and fully mix, mixed middle warm water is under the pressure of running water, by pipeline, flow in heat collector, completed the hot water that is heated to predetermined temperature in heat collector, by pipeline, be sent in heat storage water tank and store, and just now flowed into the middle warm water of heat collector, because temperature does not reach predetermined temperature, oneself is trapped in heat collector, wait for the water inlet heat exchange of next batch, this each middle warm water occupies the process of heat collector, is exactly a replacement process, middle warm water in heat collector, by constantly absorbing solar energy, water temperature in heat collector constantly increases, when the water temperature of the middle warm water in heat collector arrives the hot water of predetermined temperature, the pipeline water flow in system restarts to flow, and another batch of the running water of low temperature enters solar water heater system, start the new process of once mixing, replacing with circulating hot water, and so forth, until heat storage water tank is by multiple batches of heat exchange, till heat storage water tank hot water is full.
2. a kind of brand-new cyclic permutation heat-exchange method according to claim 1, is characterized in that, described every batch comprises three steps:
The first step, the low temperature running water that enters system mixes with the hot water that heat storage water tank circulating outlet flows into, and the outflow of the inflow of running water and heat storage water tank circulating outlet is synchronously carried out, and both flow and stop together together;
Second step, mixed middle warm water relies on the pressure of running water, and the hot water that has been heated to predetermined temperature in heat collector, all displacement is in heat storage water tank, and the closedown of pipeline in system, causes the middle warm water of itself to be trapped in heat collector;
The 3rd step, is trapped in the middle warm water in heat collector, constantly absorbs solar energy improve water temperature by heat collector, when in heat collector, the temperature of water reaches predetermined temperature, pipeline in system reopens, and ducted current restart to flow, and carries out the cyclic permutation of next batch.
3. a kind of brand-new cyclic permutation heat-exchange method according to claim 1, it is characterized in that, described solar water heater system, this system comprises heat collector, heat storage water tank, blender and attemperating unit, and the connecting pipe between each parts, wherein heat collector and the large parts of heat storage water tank two are two relatively independent monomers, the running water water inlet of system is connected on mixer entrance, blender water suction interface is connected with the circulating outlet of heat storage water tank, blender delivery port is connected to heat collector water inlet by pipeline, heat collector delivery port connects an attemperating unit, the other end of attemperating unit is connected on the water inlet of heat storage water tank by pipeline.
4. a kind of brand-new cyclic permutation heat-exchange method according to claim 3, it is characterized in that, described attemperating unit comprises water route switch and TEMP, both can be arranged on a place, also can be installed separately, but TEMP must be arranged on heat collector water outlet, as long as water route switch is serially connected in the pipeline of heat exchange, water route switch carries out switch control according to TEMP.
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| CN201210430322.0A CN102901241B (en) | 2012-11-01 | 2012-11-01 | Novel circulating and displacement type heat exchange method |
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| CN201210430322.0A CN102901241B (en) | 2012-11-01 | 2012-11-01 | Novel circulating and displacement type heat exchange method |
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| CN102901241B true CN102901241B (en) | 2014-03-12 |
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| CN107388590A (en) * | 2017-08-04 | 2017-11-24 | 吴均 | Water heater intelligent water route handover module and double water heaters with the module or more water-heater systems |
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| JPS60122861A (en) * | 1983-12-05 | 1985-07-01 | Matsushita Electric Works Ltd | Forced circulation type solar heat water heater |
| CN201344649Y (en) * | 2009-01-24 | 2009-11-11 | 张斌 | Novel double-loop circulation solar water heater |
| GB0906485D0 (en) * | 2009-04-15 | 2009-05-20 | Yrenew Solar Ltd | Solar powered integrated collector and storage apparatus |
| JP5549376B2 (en) * | 2010-05-26 | 2014-07-16 | 東京電力株式会社 | Hot water system |
| CN102589165B (en) * | 2012-03-08 | 2013-06-12 | 徐何燎 | Series-type displacing constant-temperature anti-freezing solar water heater system |
| CN102706000B (en) * | 2012-07-02 | 2013-09-25 | 徐何燎 | Separated type solar water heater with freeze prevention and frost resisting functions |
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