CN105783100A - Air source and sewage source combined heat pump hot-water system for concentrated bathing place and control method - Google Patents
Air source and sewage source combined heat pump hot-water system for concentrated bathing place and control method Download PDFInfo
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- CN105783100A CN105783100A CN201610291265.0A CN201610291265A CN105783100A CN 105783100 A CN105783100 A CN 105783100A CN 201610291265 A CN201610291265 A CN 201610291265A CN 105783100 A CN105783100 A CN 105783100A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D15/00—Other domestic- or space-heating systems
- F24D15/04—Other domestic- or space-heating systems using heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G15/00—Details
- F28G15/003—Control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/12—Heat pump
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/12—Hot water central heating systems using heat pumps
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- Thermal Sciences (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses an air source and sewage source combined heat pump hot-water system for a concentrated bathing place and a control method. The air source and sewage source combined heat pump hot-water system is characterized by comprising an air source heat pump hot-water module, a sewage source heat pump unit, a circulation heating water tank, a hot water tank, a preheating heat exchanger and a sewage collection and treatment device. The air source and sewage source combined heat pump hot-water system can automatically adjust load increase or load reduction according to water demands and operating conditions to perform the operations of circulation heating and water replenishing of water supply channels and the operation of cleaning of a sewage loop, so that an optimal operating mode of the air source and sewage source combined heat pump hot-water system is realized. The air source and sewage source combined heat pump hot-water system fully utilizes renewable energy sources and efficiently collects waste heat of bathing wastewater and air energy, thereby saving energy and protecting environment.
Description
Technical field
The present invention relates to low-grade energy regeneration or resource circulation utilization field, be specifically related to heat pump hot-water system and the control method thereof of a kind of air source and source of sewage compound, belong to a kind of energy-saving environmental protection device.
Background technology
Along with the development of growth in the living standard and the modernization of industry, domestic, commercialization and industrial heat water demand are increasing.In the present age of strengthening energy-conserving and environment-protective and sustainable development, efficiently utilizing the green energy resources such as solar energy, geothermal energy, air energy is one of effective way solving domestic hot-water's high energy consumption problem.Heat pump techniques only consumes less electric energy, is upgraded by low-grade energy, rises in value and for producing or life；Simultaneously heat pump eliminates combustion process, it is to avoid the pollution that smoke evacuation etc. causes, energy-saving and environment-friendly.
The a small amount of electric energy of air source heat pump hot water device consumption is drawn the heat of 2～4 times from air and is used for producing high-temperature-hot-water, there is economic, energy-conservation, safe and environment-friendly advantage, but air source heat pump is bigger by the impact of season and weather, such as, when outdoor temperature is very low in the winter time, from air, the electric energy extracted spent by heat can compare many, and energy efficiency declines.Compared with air, the thermal capacity of water is big, water temperature stability, and water resource heat pump has, compared with air source heat pump, the advantage that good heat-transfer, the coefficient of performance are high, stable.The bath wastewater concentrating outdoor bathing place discharge has the advantages that flow is big, temperature is high, compares air source bath wastewater and can be greatly promoted hot pump performance as thermal source.It is applied to the heat pump hot-water system of air source Yu source of sewage compound concentrate outdoor bathing place, both air source heat pump isolated operation bigger shortcoming affected by environment had been overcome, the energy of bath wastewater can be absorbed again, play the advantage that heat pump is energy-efficient, it is not affected by the impact of time condition, it is achieved annual unremitting hot water supply.
Chinese utility model patent CN202734038U discloses the central hot-water system of a kind of reusable edible energy, including the heat pump apparatus of air source of Two-stage Compression, sewage source heat pump device, water supply tank, the first small pump, the second small pump and thermal storage water tank.But this system adopts the air source heat pump system of Two-stage Compression, it does not have well matching system, efficiency is relatively low.
Chinese utility model patent CN202126009U discloses a kind of multi-heat source series-connected solar shower heating system, the device such as including air source heat pump, solar thermal collector, sewage source heat pump, this system changes multi-heat source parallel connection solar energy shower heating system into train, whole system is driven with one group of circulating pump unit, system structure is simplified, and investment reduces.But, there is similar problem with utility model patent CN202734038U in its Shortcomings in heat hot water temperature and system progress control method.
Chinese utility model patent CN203605461U discloses a kind of solar heat pump circulating energy-saving hot water facility, including net for air-source heat pump units, circulating pump, electromagnetic valve, exhaustor, water pot, bathing feed pump, sewage source heat pump unit, bath wastewater pond, temperature sensor, solar water heater.Whole system is connected to Based Intelligent Control cashier's office in a shop by cable, coordinated operation under the Based Intelligent Control of Intelligent control cabinet.This system adopts from sewage intermediary's water after heat-obtaining as the thermal source of sewage source heat pump, its heat exchange efficiency with directly using sewage compared with thermal source relatively low, problem that this system fails to solve sewage heat-obtaining device to be placed in cesspool for a long time serious due to surface scale and causes heat exchange efficiency to decline.
Summary of the invention
The present invention is for avoiding the deficiency existing for above-mentioned prior art, one is provided to concentrate outdoor bathing place air source and source of sewage combined heat-pump hot-water heating system and control method, temperature to realize hot water in heat pump hot-water system controls, the circulating-heating of hot water and without interruption, realize automatically controlling and stable operation of system, the problem simultaneously solving fouling of heat exchangers in sewage heat change process, heat exchange efficiency decline.
The present invention solves that described technical problem adopts the following technical scheme that
The present invention concentrates being structurally characterized in that of outdoor bathing place air source and source of sewage combined heat-pump hot-water heating system: described combined heat-pump hot-water heating system includes air source heat pump hot-water module and sewage source heat pump Hot water units；
Described air source heat pump hot-water module is connected between water inlet manifold and outfall sewer, containing one or more net for air-source heat pump units, the first circulating pump it is provided with between described water inlet manifold and the water outlet of water tank of cyclic heating water tank, the entrance of described outfall sewer and the first electric T-shaped valve is connected, the A outlet of described first electric T-shaped valve is connected with the water tank inlet of cyclic heating water tank, and the B outlet of described first electric T-shaped valve is connected with the boiler water inlet of boiler；
The outlet of the condensation channel of described sewage source heat pump Hot water units is connected with the entrance of the second electric T-shaped valve, the C outlet of described second electric T-shaped valve is connected with the boiler water inlet of boiler, the D outlet of described second electric T-shaped valve is connected with the water tank inlet of cyclic heating water tank, and the import of the condensation channel of sewage source heat pump Hot water units is connected with the water outlet of water tank of cyclic heating water tank through the second circulating pump；
The entrance point of the evaporation channel of described sewage source heat pump Hot water units is connected with the outlet of the sewage heat change passage of preheating heat exchanger, and the described evaporation channel port of export is connected with cesspool；
The feed water inlet of boiler connects hot water feeding pipe through hot water feed pump, the bath wastewater collected by bath wastewater catcher is infused in cesspool through filter bag, and the outlet pipeline of described cesspool accesses the arrival end of the sewage heat change passage of preheating heat exchanger through sewage pump, sand filter and the second stop valve；
Between the water supplement port and external water source of cyclic heating water tank, two water channels in parallel are set, it is respectively as follows: the first water channel accessed by external water source the 3rd stop valve and the second water channel accessed by the preheating channel of external water source the 4th stop valve and preheating heat exchanger；
Between entrance point and the port of export of the sewage heat change passage of preheating heat exchanger, bypass valve is set；
Arrange at the two ends of described second stop valve by the first stop valve and clean the bypass branch that dosing tank is in series.
The present invention concentrates the feature of the control mode of outdoor bathing place air source and source of sewage combined heat-pump hot-water heating system to be carry out moisturizing control as follows:
The liquid level maximum arranging cyclic heating water tank is H1max, and minima is H1min, when in cyclic heating water tank, liquid level starts moisturizing when being reduced to H1min, when in cyclic heating water tank, liquid level stops moisturizing when rising to H1max；During moisturizing, select the water channel that moisturizing controls as follows:
Order: T1For the sewage temperature in cesspool (18), T2Supply water temperature for external water source；
And have Δ T=T1-T2, and T is temperature difference setting value；
If Δ T > T, selecting the water channel that moisturizing controls is the second water channel；
If Δ T≤T, selecting the water channel that moisturizing controls is the first water channel.
The present invention concentrates the feature of the control mode of outdoor bathing place air source and source of sewage combined heat-pump hot-water heating system to be: arranges described system and is circulated heating and energy hole as follows:
Described circulating-heating is to adopt Liquid level, the preferential control model running sewage source heat pump unit:
Order: in boiler, T0For hot water water storage design temperature, H2max for setting liquid level maximum, H2min as setting liquid level minima；H2 is liquid level pace of change for detection liquid level, V；
When the detection liquid level H2 of boiler is reduced to setting liquid level minima H2min, starting hydronic mode of operation, described hydronic mode of operation is to apply the output gross energy of fuzzy if-then rules heat pump hot-water system as follows:
By the liquid level in boiler according to high, higher, in, relatively low and low be divided into different liquid level grades；
By the liquid level pace of change V in boiler according to honest, center, zero, negative neutralization negative be divided into greatly different liquid level pace of change grades；
The output gross energy of combined heat-pump hot-water heating system is divided into different output energy grades according to big, neutralization zero；
Control combined heat-pump hot-water heating system according to liquid level pace of change V in the detection liquid level H2 detected in real time in the boiler obtained and boiler to carry out loading or off-load；
Set the loading sequence of combined heat-pump hot-water heating system as: preferential load sewage source heat pump unit, load net for air-source heat pump units one by one subsequently；
The off-load order setting combined heat-pump hot-water heating system is: unload net for air-source heat pump units first one by one, subsequently unloading sewage source heat pump unit.
The present invention concentrates the feature of the control mode of outdoor bathing place air source and source of sewage combined heat-pump hot-water heating system to be: carry out the cleaning operation in sewage loop as follows: when the cumulative operation time of sewage pump reaches the setting time or manually arranges cleaning operation, close the second stop valve and bypass valve, open the first stop valve, the cleaned dosing tank of sewage in cesspool sequentially enters the sewage heat change passage of preheating heat exchanger, the evaporation channel of sewage source heat pump unit returns cesspool, discharges through the blowoff valve of cesspool.
Compared with the prior art, the present invention has the beneficial effect that:
1, the present invention is integrated applies air source heat pump technology and sewage source heat pump technology, utilizes the heat energy of bath wastewater and the high efficiency of sewage source heat pump, promotes work efficiency and the energy-saving horizontal of heat pump hot-water system, it is achieved resource circulation utilization, energy-saving and emission-reduction；
2, the present invention directly heat-obtaining from bath wastewater, mainly include the heat energy of the preheated heat exchanger of urban water supply and bath wastewater heat exchange, sewage source heat pump heat transfer efficient picked-up bath wastewater, in the winter time only with preheating heat exchanger and this measure of bath wastewater heat exchange, moisturizing water temperature 4～6 DEG C can be improved, produce the energy-saving effect of about 10%；
3, the present invention is provided with cyclic heating water tank and arranges electric T-shaped valve and temperature sensor at cyclic heating water tank water inlet, is separated in time by the hot water reaching design temperature, it is to avoid superheated is also energy-conservation after heating；
4, the present invention is according to the big feature of the hot water fluctuation of load, the gross energy of application fuzzy if-then rules heat pump hot-water system, realize air source heat pump and sewage source heat pump cooperation and automatically add, off-load, the sewage source heat pump of preferential operational energy efficiency higher level, reach system steadily, the purpose of reliability service and energy-saving run；
5, the present invention solves the problem causing heat exchange efficiency to reduce because of heat exchanger surface fouling, it is provided with sewage loop cleaning operation, cleaning operation performed by the setting time, and preheating heat exchanger, sewage source heat pump evaporation channel are carried out, and improved the heat exchange efficiency of heat exchanger；
Accompanying drawing explanation
Fig. 1 is present system structural representation；
nullNumber in the figure: 1 net for air-source heat pump units、2 first circulating pumps、3 air source heat pump hot-water modules、4 first temperature sensors、5 first electric T-shaped valves、6 second temperature sensors、7 cyclic heating water tanks、8 first liquidometers、9 boilers、10 second liquidometers、11 three-temperature sensors、12 second circulating pumps、13 sewage source heat pump Hot water units、14 the 4th temperature sensors、15 second electric T-shaped valves、16 bath wastewater catchers、17 filter bags、18 cesspools、19 blowoff valves、20 sewage temperature sensors、21 sewage pumps、22 sand filters、23 first stop valves、24 second stop valves、25 the 3rd stop valves、26 clean dosing tank、27 bypass valves、28 preheating heat exchangers、29 the 4th stop valves、30 water inlet manifolds、31 outfall sewers、32 hot water feeding pipes、33 hot water feed pumps、71 water supplement ports、72 water tank inlets、73 water outlet of water tank、91 boiler water inlets、92 feed water inlets、131 condensation channels、132 evaporation channels、281 sewage heat change passages、282 preheating channels.
Detailed description of the invention
Referring to Fig. 1, in the present embodiment, concentration outdoor bathing place air source with the version of source of sewage combined heat-pump hot-water heating system is: combined heat-pump hot-water heating system includes air source heat pump hot-water module 3 and sewage source heat pump Hot water units 13.
Air source heat pump hot-water module 3 is connected between water inlet manifold 30 and outfall sewer 31, containing one or more net for air-source heat pump units 1, automatically controls, according to the demand of the heat supply water yield, the number of units that multiple stage net for air-source heat pump units 1 puts into operation；The first circulating pump 2 it is provided with between the water outlet of water tank 73 of water inlet manifold 30 and cyclic heating water tank 7, outfall sewer 31 is connected with the entrance of the first electric T-shaped valve 5, the A outlet of the first electric T-shaped valve 5 is connected with the water tank inlet 72 of cyclic heating water tank 7, and the B outlet of the first electric T-shaped valve 5 is connected with the boiler water inlet 91 of boiler 9.
Outlet at the condensation channel 131 of sewage source heat pump Hot water units 13 is connected with the entrance of the second electric T-shaped valve 15, the C outlet of the second electric T-shaped valve 15 is connected with the boiler water inlet 91 of boiler 9, the D outlet of the second electric T-shaped valve 15 is connected with the water tank inlet 72 of cyclic heating water tank 7, the import of the condensation channel 131 of sewage source heat pump Hot water units 13 is connected with the water outlet of water tank 73 of cyclic heating water tank 7 through the second circulating pump 12, constitutes sewage source heat pump system condensing circuit.
The entrance point of the evaporation channel 132 of sewage source heat pump Hot water units 13 is connected with the outlet of the sewage heat change passage 281 of preheating heat exchanger 28, and evaporation channel 132 port of export is connected with cesspool 18.
The feed water inlet 92 of boiler 9 connects hot water feeding pipe 32 through hot water feed pump 33, the bath wastewater collected by bath wastewater catcher 16 is infused in cesspool 18 through filter bag 17, and the outlet pipeline of cesspool 18 accesses the arrival end of the sewage heat change passage 281 of preheating heat exchanger 28 through sewage pump 21, sand filter 22 and the second stop valve 24.
Between the water supplement port 71 and external water source of cyclic heating water tank 7, two water channels in parallel are set, it is respectively as follows: the first water channel accessed by external water source SY through the 3rd stop valve 25, and the second water channel accessed through the preheating channel 282 of the 4th stop valve 29 and preheating heat exchanger 28 by external water source SY.
Between entrance point and the port of export of the sewage heat change passage 281 of preheating heat exchanger 28, bypass valve 27 is set.
Arrange at the two ends of the second stop valve 24 by the first stop valve 23 and clean the bypass branch that dosing tank 26 is in series.
The present embodiment is concentrated outdoor bathing place air source and source of sewage combined heat-pump hot-water heating system carry out moisturizing control as follows:
The liquid level maximum arranging cyclic heating water tank 7 is H1max, and minima is H1min, when in cyclic heating water tank 7, liquid level starts moisturizing when being reduced to H1min, when in cyclic heating water tank 7, liquid level stops moisturizing when rising to H1max；During moisturizing, select the water channel that moisturizing controls as follows:
Order: T1For the sewage temperature in cesspool 18, T2Supply water temperature for external water source；
And have Δ T=T1-T2, and T is temperature difference setting value；
If Δ T > T, selecting the water channel that moisturizing controls is the second water channel；
If Δ T≤T, selecting the water channel that moisturizing controls is the first water channel.
The present embodiment is concentrated outdoor bathing place air source and source of sewage combined heat-pump hot-water heating system following manner are circulated heating and energy hole:
Circulating-heating is to adopt Liquid level, the preferential control model running sewage source heat pump unit 13:
Order: in boiler 9, T0For hot water water storage design temperature, H2max for setting liquid level maximum, H2min as setting liquid level minima；H2 is liquid level pace of change for detection liquid level, V；
When the detection liquid level H2 of boiler 9 is reduced to setting liquid level minima H2min, starting hydronic mode of operation, hydronic mode of operation is to apply the output gross energy of fuzzy if-then rules heat pump hot-water system as follows:
By the liquid level in boiler 9 according to high, higher, in, relatively low and low be divided into different liquid level grades；
By the liquid level pace of change V in boiler 9 according to honest, center, zero, negative neutralization negative be divided into greatly different liquid level pace of change grades；
The output gross energy of combined heat-pump hot-water heating system is divided into different output energy grades according to big, neutralization zero；
Control combined heat-pump hot-water heating system according to liquid level pace of change V in the detection liquid level H2 detected in real time in the boiler 9 obtained and boiler 9 to carry out loading or off-load；
Set the loading sequence of combined heat-pump hot-water heating system as: preferential load sewage source heat pump unit 13, load net for air-source heat pump units 1 one by one subsequently；
The off-load order setting combined heat-pump hot-water heating system is: unloading net for air-source heat pump units 1 first one by one, subsequently unloading sewage source heat pump unit 13.
The present embodiment is concentrated outdoor bathing place air source and source of sewage combined heat-pump hot-water heating system carry out the cleaning operation in sewage loop as follows: when the cumulative operation time of sewage pump 21 reaches the setting time or manually arranges cleaning operation, close the second stop valve 24 and bypass valve 27, open the first stop valve 23, the cleaned dosing tank 26 of sewage in cesspool sequentially enters the sewage heat change passage 281 of preheating heat exchanger 28, the evaporation channel 132 of sewage source heat pump unit 13 returns cesspool 18, enters municipal sewage pipe network through the blowoff valve 19 of cesspool 18；After cleaning operation completes, the cumulative operation time automatic clear of sewage pump 21.
As it is shown in figure 1, each sensor is respectively set in the present embodiment: be in the first temperature sensor 4 of the porch of the first electric T-shaped valve 5；Being in the second temperature sensor 6 in the access tube of external water source SY, the second temperature sensor 6 is for detecting the supply water temperature T at external water source2；It is arranged on the three-temperature sensor 11 in boiler 9；It is arranged on the 4th temperature sensor 14 of the porch of the second electric T-shaped valve 15；Being arranged on the sewage temperature sensor 20 in cesspool 18, sewage temperature sensor 20 is used for detecting sewage temperature T1；Cyclic heating water tank 7 arranges the first liquidometer 8；Boiler 9 arranges the second liquidometer 10.
Preheating heat exchanger 28 in the present embodiment is plate type heat exchanger or shell and tube exchanger, and according to shell and tube exchanger, then sewage routeway is shell side.
Operating to, with the heat pump hot-water system in winter air source Yu source of sewage compound, the embodiment that operation controls, the temperature supplied water in winter city is 4～12 DEG C, bath wastewater temperature is 30 DEG C, design temperature deviation T=8 DEG C, and each mode of operation ruuning situation is as follows:
Due to Δ T > T, moisturizing preheats, first sewage pump 21 starts, second stop valve 24 and the 4th stop valve 29 are opened, first stop valve 23, bypass valve 27 and the 3rd stop valve 25 are turned off, sewage obtains through bath wastewater catcher 16 and collects, cesspool 18 is entered after filter bag 17 coarse filtration in cesspool 18, after sand filter 22, the sewage heat change passage 281 in preheating heat exchanger 28 is entered under the effect of sewage pump 21, urban water supply is injected cyclic heating water tank 7 after preheating as the preheating channel 282 in the preheated heat exchanger 28 of external water source SY and is carried out moisturizing, when being detected that the liquid level in cyclic heating water tank 7 reaches level set maximum H1max by the first liquidometer 8, 4th stop valve 29 is closed, bypass valve 27 is opened, moisturizing warm-up operation completes.
nullSet maximum and the minima respectively H2max of the liquid level of boiler 9、H2min，When the second liquidometer 10 detects that in boiler 9, liquid level reaches setting value H2min，It is circulated heating operation，The preferential sewage source heat pump unit 13 that starts runs，Sewage pump 21 and the second circulating pump 12 start，First stop valve 23、Bypass valve 27 and the 3rd stop valve 25 are closed，Second stop valve 24 and the 4th stop valve 29 are all opened，Bath wastewater in cesspool 18 filters through sand filter 22、Enter after preheating heat exchanger 28 heat exchange in sewage source heat pump Hot water units 13 evaporation channel 132 heat release after enter municipal sewage pipe network，The condensation channel 131 that the feedwater of cyclic heating water tank 7 enters sewage source heat pump Hot water units 13 through the second circulating pump 12 heats，If water temperature reaches boiler 9 water outlet design temperature T after heating0Or time above, the C outlet conducting of the second electric T-shaped valve 15, hot water enters boiler 9；The otherwise D outlet conducting of the second electric T-shaped valve 15, hot water returns cyclic heating water tank 7 and continues cycling through heating.
Start net for air-source heat pump units 1, first circulating pump 2 is opened, the feedwater of cyclic heating water tank 7 enters net for air-source heat pump units 1 after the first circulating pump 2, air source heat pump module water inlet manifold 30 and is heated, if the hot water temperature after heating reaches boiler 9 water outlet design temperature T0Or time above, the B outlet conducting of the first electric T-shaped valve 5, hot water enters boiler 9 after the block outfall sewer 31 of air source heat pump module, otherwise the A outlet conducting of the first electric T-shaped valve 5, and hot water returns cyclic heating water tank 7 and continues cycling through heating.
Claims (4)
1. concentrate outdoor bathing place air source and a source of sewage combined heat-pump hot-water heating system, it is characterized in that: described combined heat-pump hot-water heating system includes air source heat pump hot-water module (3) and sewage source heat pump Hot water units (13)；
Described air source heat pump hot-water module (3) is connected between water inlet manifold (30) and outfall sewer (31), containing one or more net for air-source heat pump units (1), the first circulating pump (2) it is provided with between the water outlet of water tank (73) of described water inlet manifold (30) and cyclic heating water tank (7), described outfall sewer (31) is connected with the entrance of the first electric T-shaped valve (5), the A outlet of described first electric T-shaped valve (5) is connected with the water tank inlet (72) of cyclic heating water tank (7), the B outlet of described first electric T-shaped valve (5) is connected with the boiler water inlet (91) of boiler (9)；
The outlet of the condensation channel (131) of described sewage source heat pump Hot water units (13) is connected with the entrance of the second electric T-shaped valve (15), the C outlet of described second electric T-shaped valve (15) is connected with the boiler water inlet (91) of boiler (9), the D outlet of described second electric T-shaped valve (15) is connected with the water tank inlet (72) of cyclic heating water tank (7), the import of the condensation channel (131) of sewage source heat pump Hot water units (13) is connected with the water outlet of water tank (73) of cyclic heating water tank (7) through the second circulating pump (12)；
The entrance point of the evaporation channel (132) of described sewage source heat pump Hot water units (13) is connected with the outlet of the sewage heat change passage (281) of preheating heat exchanger (28), and described evaporation channel (132) port of export is connected with cesspool (18)；
The feed water inlet (92) of boiler (9) connects hot water feeding pipe (32) through hot water feed pump (33), the bath wastewater collected by bath wastewater catcher (16) is infused in cesspool (18) through filter bag (17), and the outlet pipeline of described cesspool (18) accesses the arrival end of the sewage heat change passage (281) of preheating heat exchanger (28) through sewage pump (21), sand filter (22) and the second stop valve (24)；
Between the water supplement port (71) and external water source of cyclic heating water tank (7), two water channels in parallel are set, it is respectively as follows: the first water channel accessed by external water source the 3rd stop valve (25) and the second water channel accessed by the preheating channel (282) of external water source the 4th stop valve (29) and preheating heat exchanger (28)；
Between entrance point and the port of export of the sewage heat change passage (281) of preheating heat exchanger (28), bypass valve (27) is set；
Arrange at the two ends of described second stop valve (24) by the first stop valve (23) and clean the bypass branch that dosing tank (26) is in series.
2. the control mode concentrating outdoor bathing place air source and source of sewage combined heat-pump hot-water heating system described in claim 1, is characterized in that carrying out as follows moisturizing control:
The liquid level maximum arranging cyclic heating water tank (7) is H1max, minima is H1min, when in cyclic heating water tank (7), liquid level starts moisturizing when being reduced to H1min, when in cyclic heating water tank (7), liquid level stops moisturizing when rising to H1max；During moisturizing, select the water channel that moisturizing controls as follows:
Order: T1For the sewage temperature in cesspool (18), T2Supply water temperature for external water source；
And have Δ T=T1-T2, and T is temperature difference setting value；
If Δ T > T, selecting the water channel that moisturizing controls is the second water channel；
If Δ T≤T, selecting the water channel that moisturizing controls is the first water channel.
3. the control mode concentrating outdoor bathing place air source and source of sewage combined heat-pump hot-water heating system described in claim 1, is characterized in that arranging described system is circulated heating and energy hole as follows:
Described circulating-heating is to adopt Liquid level, the preferential control model running sewage source heat pump unit (13):
Order: in boiler (9), T0For hot water water storage design temperature, H2max for setting liquid level maximum, H2min as setting liquid level minima；H2 is liquid level pace of change for detection liquid level, V；
When the detection liquid level H2 of boiler (9) is reduced to setting liquid level minima H2min, starting hydronic mode of operation, described hydronic mode of operation is to apply the output gross energy of fuzzy if-then rules heat pump hot-water system as follows:
By the liquid level in boiler (9) according to high, higher, in, relatively low and low be divided into different liquid level grades；
By the liquid level pace of change V in boiler (9) according to honest, center, zero, negative neutralization negative be divided into greatly different liquid level pace of change grades；
The output gross energy of combined heat-pump hot-water heating system is divided into different output energy grades according to big, neutralization zero；
Control combined heat-pump hot-water heating system according to liquid level pace of change V in the detection liquid level H2 detected in real time in the boiler (9) obtained and boiler (9) to carry out loading or off-load；
Set the loading sequence of combined heat-pump hot-water heating system as: preferential load sewage source heat pump unit (13), load net for air-source heat pump units (1) one by one subsequently；
The off-load order setting combined heat-pump hot-water heating system is: unload net for air-source heat pump units (1) first one by one, subsequently unloading sewage source heat pump unit (13).
4. the control mode concentrating outdoor bathing place air source and source of sewage combined heat-pump hot-water heating system described in a claim 1, it is characterized in that carrying out as follows the cleaning operation in sewage loop: when the cumulative operation time of sewage pump (21) reaches the setting time or manually arranges cleaning operation, close the second stop valve (24) and bypass valve (27), open the first stop valve (23), the cleaned dosing tank of sewage (26) in cesspool sequentially enters the sewage heat change passage (281) of preheating heat exchanger (28), the evaporation channel (132) of sewage source heat pump unit (13) returns cesspool (18), blowoff valve (19) through cesspool (18) is discharged.
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