CN103900288A - Heat pump unit for harbor districts and control method thereof - Google Patents
Heat pump unit for harbor districts and control method thereof Download PDFInfo
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- CN103900288A CN103900288A CN201410136123.8A CN201410136123A CN103900288A CN 103900288 A CN103900288 A CN 103900288A CN 201410136123 A CN201410136123 A CN 201410136123A CN 103900288 A CN103900288 A CN 103900288A
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Abstract
The invention relates to a heat pump unit for harbor districts and a control method thereof. The heat pump unit comprises a compressor, a first four-way reversing valve, a second four-way reversing valve, a first heat exchanger, a second heat exchanger, a third heat exchanger, a fourth heat exchanger, a fifth heat exchanger, and a sixth heat exchanger. The input end of the compressor is connected with the first and second four-way reversing valves; the output end of the compressor is connected with the first and second four-way reversing valves; the first four-way reversing valve is connected with the first and second heat exchangers; the second four-way reversing valve is connected with the second, third and fourth heat exchangers; the first heat exchanger is connected with the second, third, and fourth heat exchangers; the second heat exchanger is connected with the third and fourth heat exchangers; the third heat exchanger is connected with the fifth heat exchanger in parallel; the fourth heat exchanger is connected with the sixth heat exchanger in parallel. The heat pump unit for harbor districts has the advantages that investment can be lower, energy resources can be saved and environmental thermal pollution can be reduced.
Description
Technical field
The present invention relates to a kind of harbour port district building conditioner, more particularly, relate to a kind of port district source pump and control method thereof.
Background technology
Port district is generally divided into production area and production auxiliary region, and the heat supply of Er Gang district production accessory building, particularly bulk goods port district are mainly production operation personnel bathroom hot water is provided, and its heat supply feature is that a heating load is larger, and heating time is shorter.Because port zone position is away from urban district, the heating of port district is difficult to adopt municipal heating systems to provide.
Chinese patent (publication number is: CN102635904A) discloses the new wind of a kind of two circulation and has dried and add the cooling air-conditioning unit of coil pipe, and this unit, by producing respectively high low-temperature cold water, has been realized temperature, the humidity in building and independently controlled.Port in summer district building air conditioning refrigeration duty is larger, has a large amount of condensation heat when unit operation, makes a large amount of dissipation of heats in the middle of outdoor environment, and environment is produced to thermal pollution; Because this device can not provide domestic hot-water summer, need be from a set of thermal source of new design, as electric heater, Teat pump boiler hot water preparing, when increase equipment, increase the initial cost of system, adopt electrical heating hot water preparing, not only can increase initial cost, and reduce the energy utilization rate of entire system.
In order to overcome the above problems, the invention provides a kind of port district source pump and control method thereof, can realize following functions: winter summer air-conditioning and domestic hot-water is provided; Solve Liao Gang district building in a set of refrigeration unit of design, the problem of a set of hot water apparatus also will be provided.Reduce initial cost, saved the energy.
Summary of the invention
The technical problem to be solved in the present invention is environment to produce thermal pollution, and domestic water can not be provided, and for the many defects of the large fund raising of above-mentioned thermal pollution of prior art, provides a kind of port district source pump and control method thereof.
The technical solution adopted for the present invention to solve the technical problems is: a kind of port district source pump, comprise compressor, the first four-way change-over valve, the second four-way change-over valve, and First Heat Exchanger, the second heat exchanger, the 3rd heat exchanger, the 4th heat exchanger, the 5th heat exchanger, the 6th heat exchanger, the input of described compressor connects the first four-way change-over valve and the second four-way change-over valve, and the output of compressor connects the first four-way change-over valve and the second four-way change-over valve; The first four-way change-over valve connects First Heat Exchanger and the second heat exchanger, the second four-way change-over valve connects the second heat exchanger, the 3rd heat exchanger and the 4th heat exchanger, First Heat Exchanger connects the second heat exchanger, the 3rd heat exchanger and the 4th heat exchanger, the second heat exchanger connects the 3rd heat exchanger, the 4th heat exchanger, the 3rd heat exchanger is in parallel with the 5th heat exchanger, and the 4th heat exchanger is in parallel with the 6th heat exchanger;
Between the first four-way change-over valve and the second four-way change-over valve, be disposed with the second check valve, the first check valve, between the first four-way change-over valve and the second heat exchanger, be provided with the second check valve, between the second four-way change-over valve and the second heat exchanger, be provided with the first check valve;
Between First Heat Exchanger and the 3rd heat exchanger, be disposed with first throttle valve, magnetic valve, the second choke valve, between First Heat Exchanger and the 4th heat exchanger, be provided with first throttle valve, between the second heat exchanger and the 4th heat exchanger, be provided with magnetic valve, between the second heat exchanger and the 3rd heat exchanger, be provided with the second choke valve, between the second heat exchanger and the 3rd heat exchanger, be also provided with the 3rd check valve and in parallel with the second choke valve.
The present invention also provides the control method of a kind of above-mentioned port district source pump, comprises the following steps:
S1, shut electromagnetic valve, the cold-producing medium of low-temp low-pressure enters compressor through the second four-way change-over valve, high-temperature high-pressure refrigerant after compressor compresses is divided into two-way circulation: first via cold-producing medium enters First Heat Exchanger condensation heat release through the first four-way change-over valve, and the second road cold-producing medium enters the second heat exchanger condensation heat release by the second four-way change-over valve through the first check valve;
S2, by the cold-producing medium of First Heat Exchanger condensation heat release through first throttle valve adiabatic expansion, cold-producing medium after reducing pressure by regulating flow enters the 4th heat exchanger and absorbs the latent heat of vaporization, cross the second choke valve adiabatic expansion by the cold-producing medium after the second heat exchanger condensation heat release, the cold-producing medium after reducing pressure by regulating flow enters the 3rd heat exchanger and absorbs the latent heat of vaporization;
The refrigerant mixed that S3, the cold-producing medium being flowed out by the 3rd heat exchanger and the 4th heat exchanger flow out, enters compressor through the second four-way change-over valve, again circulates.
The present invention also provides the control method of another kind of above-mentioned port district source pump, comprise the following steps: S1, opens solenoid valve, the cold-producing medium of low-temp low-pressure enters compressor through the first four-way change-over valve, high-temperature high-pressure refrigerant after compressor compresses is divided into two-way circulation: first via cold-producing medium enters the second heat exchanger condensation heat release through the first four-way change-over valve through the second check valve, and the second road cold-producing medium enters respectively the 3rd heat exchanger and the 4th heat exchanger condensation heat release through the second four-way change-over valve;
S2, by the cold-producing medium after the 3rd heat exchanger condensation heat release through the 3rd check valve with by the refrigerant mixed after the second heat exchanger condensation heat release, again mix with the cold-producing medium of the 4th heat exchanger condensation heat release by magnetic valve, mixed cold-producing medium becomes the cold-producing medium of low-temp low-pressure through first throttle valve adiabatic expansion again;
S3, vaporized through First Heat Exchanger by the cold-producing medium of first throttle valve adiabatic expansion, the low-temperature low-pressure refrigerant after vaporization enters the input of compressor through the first four-way change-over valve, again circulate.
Implement a kind of port of the present invention district source pump and control method thereof, there is following beneficial effect:
1, due to the effect of the second heat exchanger, this device, when meet building refrigeration summer, can be produced domestic hot-water and reclaim a large amount of condensation heat;
2, due to the regulating action that turns to of four-way change-over valve, this device provides domestic hot-water when guaranteeing in the winter time heating, solves port district for heat problem;
3, be loop structure system due to what arrange, in heat recycling in summer, can be dispersed into outdoorly, just can reduce outdoor environment thermal pollution;
4, reduce investment, save the energy.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation of a kind of port of the present invention district source pump.
Fig. 2 is the flow chart of a kind of port of the present invention district source pump summer operation control.
Fig. 3 is the flow chart of a kind of port of the present invention district source pump winter operation control.
Fig. 4 is the refrigerant circulation schematic diagram of a kind of port of the present invention district source pump.
In figure: 1, compressor, 2, the first four-way change-over valve, 3, the second check valve, 4, the second four-way change-over valve, 5, the first check valve, 6, First Heat Exchanger, 7, the second heat exchanger, 8, first throttle valve, 9, magnetic valve, 10, the second choke valve, 11, the 3rd check valve, 12, the 3rd heat exchanger, 13, the 4th heat exchanger, 14, the 5th heat exchanger, 16, the 6th heat exchanger.
The specific embodiment
Understand for technical characterictic of the present invention, object and effect being had more clearly, now contrast accompanying drawing and describe the specific embodiment of the present invention in detail.
As shown in Figure 1, in a kind of port of the present invention district source pump, comprise compressor 1, the first four-way change-over valve 2, the second four-way change-over valve 4, and First Heat Exchanger 6, the second heat exchanger 7, the 3rd heat exchanger 12, the 4th heat exchanger 13, the 5th heat exchanger 14, the 6th heat exchanger 15, the input of compressor 1 connects the first four-way change-over valve 2 and the second four-way change-over valve 4, and the output of compressor 1 connects the first four-way change-over valve 2 and the second four-way change-over valve 4; The first four-way change-over valve 2 connects First Heat Exchanger 6 and the second heat exchanger 7, the second four-way change-over valve 4 connects the second heat exchanger 7, the 3rd heat exchanger 12 and the 4th heat exchanger 13, First Heat Exchanger 6 connects the second heat exchanger 7, the 3rd heat exchanger 12 and the 4th heat exchanger 13, the second heat exchanger 7 connects the 3rd heat exchanger 12, the 4th heat exchanger 13, the 3rd heat exchanger 12 is in parallel with the 5th heat exchanger 14, and the 4th heat exchanger 14 is in parallel with the 6th heat exchanger 16;
Between the first four-way change-over valve 2 and the second four-way change-over valve 4, be disposed with the second check valve 3, the first check valve 5, between the first four-way change-over valve 2 and the second heat exchanger 7, be provided with between the second check valve 3, the second four-way change-over valves 4 and the second heat exchanger 7 and be provided with the first check valve 5;
Between First Heat Exchanger 6 and the 3rd heat exchanger 12, be disposed with first throttle valve 8, magnetic valve 9, the second choke valve 10, between First Heat Exchanger 6 and the 4th heat exchanger 13, be provided with first throttle valve 8, between the second heat exchanger 7 and the 4th heat exchanger 13, be provided with magnetic valve 9, between the second heat exchanger 7 and the 3rd heat exchanger 12, be provided with between the second choke valve 10, the second heat exchangers 7 and the 3rd heat exchanger 12 and be also provided with the 3rd check valve 11 and in parallel with the second choke valve 10.
As shown in Figure 2, when summer operation, above-mentioned port district comprises the following steps by the control method of source pump
S1, shut electromagnetic valve 9, the cold-producing medium of low-temp low-pressure enters compressor 1 through the second four-way change-over valve 4, high-temperature high-pressure refrigerant after compressor 1 compression is divided into two-way circulation: first via cold-producing medium enters First Heat Exchanger 6 condensation heat releases through the first four-way change-over valve 2, and the second road cold-producing medium enters the second heat exchanger 7 condensation heat releases by the second four-way change-over valve 4 through the first check valve 5;
S2, by the cold-producing medium of First Heat Exchanger 6 condensation heat releases through first throttle valve 8 adiabatic expansions, cold-producing medium after reducing pressure by regulating flow enters the 4th heat exchanger 13 and absorbs the latent heat of vaporization, cross the second choke valve 10 adiabatic expansions by the cold-producing medium after the second heat exchanger 7 condensation heat releases, the cold-producing medium after reducing pressure by regulating flow enters the 3rd heat exchanger 12 and absorbs the latent heat of vaporization;
The refrigerant mixed that S3, the cold-producing medium being flowed out by the 3rd heat exchanger 12 and the 4th heat exchanger 13 flow out, enters compressor 1 through the second four-way change-over valve 4, again circulates.
Water circulation flow process:
The cold water of producing through the 4th heat exchanger 13 enters the 6th heat exchanger 15, and the cold water of producing through the 3rd heat exchanger 12 enters the 5th heat exchanger 14, completes room air adjustment process by the 5th heat exchanger 14, the 6th heat exchanger 15; Produce domestic hot-water by the second heat exchanger 7 recovering condensing heats.
As shown in Figure 3, when winter operation, above-mentioned port district comprises the following steps by the control method of source pump:
S1, opens solenoid valve 9, the cold-producing medium of low-temp low-pressure enters compressor 1 through the first four-way change-over valve 2, high-temperature high-pressure refrigerant after compressor 1 compression is divided into two-way circulation: first via cold-producing medium enters the second heat exchanger 7 condensation heat releases through the first four-way change-over valve 2 through the second check valve 3, and the second road cold-producing medium enters respectively the 3rd heat exchanger 12 and the 4th heat exchanger 13 condensation heat releases through the second four-way change-over valve 4;
S2, by the cold-producing medium after the 3rd heat exchanger 12 condensation heat releases through the 3rd check valve 11 with by the refrigerant mixed after the second heat exchanger 7 condensation heat releases, again mix with the cold-producing medium of the 4th heat exchanger 13 condensation heat releases by magnetic valve 9, mixed cold-producing medium becomes the cold-producing medium of low-temp low-pressure through first throttle valve 8 adiabatic expansions again;
S3, vaporized through First Heat Exchanger 6 by the cold-producing medium of first throttle valve 8 adiabatic expansions, the low-temperature low-pressure refrigerant after vaporization enters the input of compressor 1 through the first four-way change-over valve 2, again circulate.
Water cycle process:
The hot water of producing through the 4th heat exchanger 13 enters the 6th heat exchanger 15, and the hot water of producing through the 3rd heat exchanger 12 enters the 5th heat exchanger 14, completes room air adjustment process through the 5th heat exchanger 14, the 6th heat exchanger 15; Produce domestic hot-water by the second heat exchanger 7.
Embodiment:
Certain bulk goods port district total passenger places 232 people, 100 people of the top class in a kindergarten, bathroom is arranged in Hou Gong building, and totally three layers, one deck is bathroom, needs hot water amount 7.5m
3/ time, two layers of air conditioning area 800m
2, required cooling load of air-condition is 120KW; Three layers of air conditioning area 300m
2, required cooling load of air-condition is 45KW; By source pump, air-conditioned room is carried out to air conditioning by port of the present invention district, the refrigeration duty that the 4th heat exchanger 13 is born is W
1=45kW, cold-producing medium working medium is R134a, and by the second heat exchanger 7 recovering condensing heat domestic hot-water supplies, evaporating temperature of the present invention is 4 ℃, and condensation temperature is 50 ℃.
Fig. 4 is refrigerant circulation schematic diagram, graph 1-2 represents the compression process of cold-producing medium in compressor 1, graph 2-3 represents that condensation heat release and second heat exchanger 7 thereof of cold-producing medium working medium in First Heat Exchanger 6 produce domestic hot-water's process, graph 3-4 represents the throttling process of cold-producing medium through first throttle valve 8 and the second choke valve 10, graph 4-1 represents the evaporation process of cold-producing medium in the 3rd heat exchanger 12 and the 4th heat exchanger 13, by the reciprocation cycle of cold-producing medium, complete process of refrigerastion.
Energy Efficiency Analysis:
The parameter value of table one refrigerant condition point
One, efficiency of the present invention is calculated
The refrigerating capacity q=h of unit unit
1-h
4=400-270=130kJ/kg
The 4th heat exchanger 13 refrigerant mass fluxes
The 3rd heat exchanger 12 refrigerant mass fluxes
Compressor 1 consumed power
P=（M
1+M
2)·(h
2-h
1)=(0.346+0.923)×(438-400)=48.22kW
Condensation heat yield
W
3=M
2·(h
2-h
3)=0.923×(438-270)=155kW
This unit leaving water temperature is 50 ℃, and inflow temperature is 10 ℃, and the specified hot water amount of generation is
Unit, after operation 2-2.5h, produces 6.6-8.25m
3hot water, meets the 100 people's bathing requirements of the top class in a kindergarten.
Coefficient of refrigerating performance of the present invention is
Heating efficiency of the present invention is
Comprehensive energy efficiency ratio of the present invention is
COP=COP
1+COP
2=3.42+3.21=6.63
Two, the efficiency of traditional air-conditioning unit is calculated
Apparatus of the present invention are by contrasting with traditional air-conditioning unit, and comprehensive COP is high by 93.86% compared with conventional value, reclaims the hot water 3.3m of 50 ℃ simultaneously
3/ h.
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment is only schematic; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not departing from the scope situation that aim of the present invention and claim protect, also can make a lot of forms, within these all belong to protection of the present invention.
Claims (3)
1.Yi Zhonggang district source pump, it is characterized in that, comprise compressor, the first four-way change-over valve, the second four-way change-over valve, and First Heat Exchanger, the second heat exchanger, the 3rd heat exchanger, the 4th heat exchanger, the 5th heat exchanger, the 6th heat exchanger, the input of described compressor connects the first four-way change-over valve and the second four-way change-over valve, and the output of compressor connects the first four-way change-over valve and the second four-way change-over valve; The first four-way change-over valve connects First Heat Exchanger and the second heat exchanger, the second four-way change-over valve connects the second heat exchanger, the 3rd heat exchanger and the 4th heat exchanger, First Heat Exchanger connects the second heat exchanger, the 3rd heat exchanger and the 4th heat exchanger, the second heat exchanger connects the 3rd heat exchanger, the 4th heat exchanger, the 3rd heat exchanger is in parallel with the 5th heat exchanger, and the 4th heat exchanger is in parallel with the 6th heat exchanger;
Between the first four-way change-over valve and the second four-way change-over valve, be disposed with the second check valve, the first check valve, between the first four-way change-over valve and the second heat exchanger, be provided with the second check valve, between the second four-way change-over valve and the second heat exchanger, be provided with the first check valve;
Between First Heat Exchanger and the 3rd heat exchanger, be disposed with first throttle valve, magnetic valve, the second choke valve, between First Heat Exchanger and the 4th heat exchanger, be provided with first throttle valve, between the second heat exchanger and the 4th heat exchanger, be provided with magnetic valve, between the second heat exchanger and the 3rd heat exchanger, be provided with the second choke valve, between the second heat exchanger and the 3rd heat exchanger, be also provided with the 3rd check valve and in parallel with the second choke valve.
2. a port claimed in claim 1 district source pump control method, is characterized in that,
Comprise the following steps:
S1, shut electromagnetic valve, the cold-producing medium of low-temp low-pressure enters compressor through the second four-way change-over valve, high-temperature high-pressure refrigerant after compressor compresses is divided into two-way circulation: first via cold-producing medium enters First Heat Exchanger condensation heat release through the first four-way change-over valve, and the second road cold-producing medium enters the second heat exchanger condensation heat release by the second four-way change-over valve through the first check valve;
S2, by the cold-producing medium of First Heat Exchanger condensation heat release through first throttle valve adiabatic expansion, cold-producing medium after reducing pressure by regulating flow enters the 4th heat exchanger and absorbs the latent heat of vaporization, cross the second choke valve adiabatic expansion by the cold-producing medium after the second heat exchanger condensation heat release, the cold-producing medium after reducing pressure by regulating flow enters the 3rd heat exchanger and absorbs the latent heat of vaporization;
The refrigerant mixed that S3, the cold-producing medium being flowed out by the 3rd heat exchanger and the 4th heat exchanger flow out, enters compressor through the second four-way change-over valve, again circulates.
3. a control method for source pump for the district of port claimed in claim 1, is characterized in that, comprises the following steps:
S1, opens solenoid valve, the cold-producing medium of low-temp low-pressure enters compressor through the first four-way change-over valve, high-temperature high-pressure refrigerant after compressor compresses is divided into two-way circulation: first via cold-producing medium enters the second heat exchanger condensation heat release through the first four-way change-over valve through the second check valve, and the second road cold-producing medium enters respectively the 3rd heat exchanger and the 4th heat exchanger condensation heat release through the second four-way change-over valve;
S2, by the cold-producing medium after the 3rd heat exchanger condensation heat release through the 3rd check valve with by the refrigerant mixed after the second heat exchanger condensation heat release, again mix with the cold-producing medium of the 4th heat exchanger condensation heat release by magnetic valve, mixed cold-producing medium becomes the cold-producing medium of low-temp low-pressure through first throttle valve adiabatic expansion again;
S3, vaporized through First Heat Exchanger by the cold-producing medium of first throttle valve adiabatic expansion, the low-temperature low-pressure refrigerant after vaporization enters the input of compressor through the first four-way change-over valve, again circulate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410136123.8A CN103900288B (en) | 2014-04-04 | 2014-04-04 | A kind of port district source pump and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410136123.8A CN103900288B (en) | 2014-04-04 | 2014-04-04 | A kind of port district source pump and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103900288A true CN103900288A (en) | 2014-07-02 |
| CN103900288B CN103900288B (en) | 2016-08-24 |
Family
ID=50991772
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105698439A (en) * | 2016-04-08 | 2016-06-22 | 中交第二航务工程勘察设计院有限公司 | Water source heat pump regulating heat and humid environment of harbor district and control method of water source heat pump |
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| CN101608845A (en) * | 2009-07-20 | 2009-12-23 | 西安建筑科技大学 | The parallel connection type modularized heat pump unit |
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| CN105698439A (en) * | 2016-04-08 | 2016-06-22 | 中交第二航务工程勘察设计院有限公司 | Water source heat pump regulating heat and humid environment of harbor district and control method of water source heat pump |
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|---|---|
| CN103900288B (en) | 2016-08-24 |
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