CN206001737U - A kind of super low temperature heat pump system for heating - Google Patents
A kind of super low temperature heat pump system for heating Download PDFInfo
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- CN206001737U CN206001737U CN201620887758.6U CN201620887758U CN206001737U CN 206001737 U CN206001737 U CN 206001737U CN 201620887758 U CN201620887758 U CN 201620887758U CN 206001737 U CN206001737 U CN 206001737U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 117
- 238000010257 thawing Methods 0.000 claims description 23
- 230000000694 effects Effects 0.000 claims description 9
- 239000002826 coolant Substances 0.000 claims description 7
- 238000001704 evaporation Methods 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 4
- 239000003507 refrigerant Substances 0.000 claims description 4
- 239000006200 vaporizer Substances 0.000 claims description 3
- 238000010025 steaming Methods 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 claims 1
- 230000015556 catabolic process Effects 0.000 abstract description 9
- 238000006731 degradation reaction Methods 0.000 abstract description 9
- 230000007547 defect Effects 0.000 abstract description 5
- 230000009471 action Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002510 pyrogen Substances 0.000 description 1
- 238000009790 rate-determining step (RDS) Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 210000005239 tubule Anatomy 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
This utility model provides a kind of super low temperature heat pump system for heating, the first heat pump connecting including overlapping and the second heat pump, wherein first heat pump is high-temperature level, and it includes the first compressor (11), condenser (12) and first throttle device (13)；Second heat pump is low-temperature level, including the second compressor (21), gas cooler (22), high pressure evaporator (23) and second throttling device high pressure evaporator (24)；Described first heat pump is combined by evaporative condenser (3) overlapping with described second heat pump, wherein said first heat pump passes through described evaporative condenser (3) and absorbs heat, and described second heat pump is by described evaporative condenser (3) heat release.Heat pump heating system of the prior art serious defect of especially less than 25 DEG C performance degradations at a temperature of low temperature environment can be overcome by this utility model, make stable system performance and will not decay, system energy efficiency maintains higher level all the time.
Description
Technical field
This utility model belong to heat energy conversion and utilize technical field and in particular to a kind of for heat super low temperature heat pump
System.
Background technology
Heat pump water system of the prior art is most to adopt air source or water source heat pump water heater (also referred to as air energy or water
Energy water heater), typically the low-temperature heat quantity in the air or water is absorbed, then heated up after compressor compresses and increase
Pressure, then by heat exchanger conversion feedwater heating, the high temperature heat after compression to heat cold water with this makes it heat up thus reaching system
The purpose of hot water taking.But the refrigerant mass flow if when ambient outdoor air temperature is relatively low, in air source heat pump evaporator
Amount can drop to very low value, cause air source heat pump absorbent heat from ambient outdoor air temperature very limited, finally lead
The work efficiency of pyrogenicity pump reduces, and research shows, when outdoor environment temperature is less than -15 DEG C, air source heat pump performance degradation is bright
Aobvious, so that coolant is as R410A as a example, its heat pump can only adapt to more than -25 DEG C of ambient temperature, and under this temperature conditions
The hot water that can make can only achieve 55 DEG C, and when -15 DEG C, performance just decays to original half, and air source heat pump is in cryogenic temperature
Under the conditions of the heat that can make can not meet the demand of constant-temperature hot water supply.
Because heat pump water system of the prior art exists at a temperature of low temperature environment, performance degradation is serious, produces out
The not high technical problem of hot water temperature, therefore this utility model research design go out a kind of super low temperature heat pump system for heating
System.
Utility model content
Therefore, the technical problems to be solved in the utility model is to overcome heat pump water system of the prior art to exist
The serious defect of performance degradation at a temperature of low temperature environment, thus provide a kind of super low temperature heat pump system for heating.
This utility model provides a kind of super low temperature heat pump system for heating, and it includes the first heat pump system that overlapping connects
System and the second heat pump, wherein said first heat pump is high-temperature level, and it includes the first compressor, condenser and first segment
Stream device；Described second heat pump is low-temperature level, and it includes the second compressor, gas cooler, high pressure evaporator and second
Throttling arrangement；
Described first heat pump is combined by evaporative condenser overlapping with described second heat pump, wherein institute
State the first heat pump to absorb heat by described evaporative condenser, described second heat pump is by described evaporative condenser heat release.
Preferably, described gas cooler is arranged on the upward refrigerant end of described evaporative condenser.
Preferably, described condenser is set to carry out heat exchange with low temperature water lines；Described gas cooler be set to in
Warm water pipeline carries out heat exchange.
Preferably, described low temperature water lines include low temperature water inlet end and middle temperature water side, and wherein said middle temperature water side is divided
Propping up is the first via and two, the second tunnel branch road, and described second tunnel is connected with the middle temperature water inlet end of described middle warm water pipeline.
Preferably, the high-temperature water outlet end of described middle warm water pipeline is connected by water mixing valve with the described first via and uses to high-temperature water
Water demand end.
Preferably, described middle temperature water side is branched into the first via and two, the second tunnel branch road by arranging shunt valve；
And it is additionally provided with water pump in described low temperature water lines.
Preferably, it is additionally provided with defrosting branch road in described second heat pump, one end of described defrosting branch road connects to institute
State between gas cooler and described vapotron, the other end connects to described high pressure evaporator.
Preferably, the pipeline that described gas cooler and evaporative condenser are located is additionally provided with the first electromagnetic valve；?
It is additionally provided with the second electromagnetic valve on described defrosting branch road.
Preferably, described defrosting branch road for having the pipe of throttling action, and during defrost coolant also by gas cooler
Therefrom absorb heat in warm water pipeline.
Preferably, adopt R134A as cold-producing medium in described first heat pump, adopt in described second heat pump
R744 is as cold-producing medium.
Preferably, as outdoor environment temperature TRingWhen >=-10 DEG C, described second heat pump is controlled to follow under Trans-critical cycle state
Ring；As outdoor environment temperature TRingWhen≤- 10 DEG C, described second heat pump is controlled to circulate under subcritical state.
A kind of super low temperature heat pump system for heating that this utility model provides has the advantages that：
1. a kind of super low temperature heat pump system for heating being provided by this utility model, can overcome in prior art
Heat pump heating system at a temperature of low temperature environment the serious defect of performance degradation so that stable system performance and will not declining
Subtract, system energy efficiency maintains higher level all the time；
2. a kind of super low temperature heat pump system for heating being provided by this utility model, the system of enabling to can be fitted
Answer less than -40 DEG C of ultra-low temperature surroundings temperature and original performance can also be kept；
3. by this utility model provide a kind of for heating super low temperature heat pump system, can produce up to 95 DEG C with
On ultrahigh-temperature hot water；
4. a kind of super low temperature heat pump system for heating being provided by this utility model, can produce middle warm water simultaneously
And high-temperature water, it is sufficiently used the heat of high temperature of R744 system, utilization rate is up to 95%；
5. a kind of super low temperature heat pump system for heating being provided by this utility model is additionally it is possible to effectively to system
In due to the frosting that low temperature brings carry out defrosting effect it is ensured that super low temperature heat pump heating system remain under ultra low temperature state pacify
Entirely reliably run, improve the runnability of system.
Brief description
Fig. 1 is a kind of structural representation of super low temperature heat pump system for heating of the present utility model.
In figure reference is expressed as：
11- first compressor, 12- condenser, 13- first throttle device, 14- the first electronic oil level static organ, 15- low pressure
Fluid reservoir, 16- first gas-liquid separator, 21- second compressor, 22- gas cooler, 23- high pressure evaporator, 24- second section
Stream device, 25- first electromagnetic valve, 26- the second electronic oil level static organ, 27- regenerator, 28- second gas-liquid separator, 3- evaporates
Condenser, 4- low temperature water lines, 41- low temperature water inlet end, 42- middle temperature water side, the 421- first via, 422- second tunnel, the middle temperature of 5-
Water lines, 51- middle temperature water inlet end, 52- high-temperature water outlet end, 6- defrosting branch road, 61- second electromagnetic valve, 7- water pump, 8- shunt valve,
9- water mixing valve.
Specific embodiment
As shown in figure 1, this utility model provides a kind of super low temperature heat pump system for heating, it includes what overlapping connected
First heat pump and the second heat pump, wherein said first heat pump is high-temperature level, and it includes the first compressor 11, cold
Condenser 12 and first throttle device 13；Described second heat pump is low-temperature level, and it includes the second compressor 21, gas cooler
22nd, high pressure evaporator 23 and second throttling device 24；
Described first heat pump is combined by evaporative condenser 3 overlapping with described second heat pump, wherein
Described first heat pump passes through described evaporative condenser 3 evaporation endothermic, and described second heat pump passes through described evaporative condenser
Device 3 cooling heat release (i.e. the first heat pump and the second heat pump circulating system share described evaporative condenser 3).
By super low temperature heat pump system of the present utility model, using the first heat pump and the second heat pump system of superposition type
System, and adopt the connected mode of gas cooler and evaporative condenser two-stage type heat release in the second heat pump, can overcome
The serious defect of heat pump heating system of the prior art performance degradation at a temperature of low temperature environment so that stable system performance and
Will not decay, system energy efficiency maintains higher level all the time；The system of enabling to is suitable for less than -40 DEG C of ultralow temperature
Ambient temperature and original performance can also be kept.
Preferably, described gas cooler 22 is arranged on the upward refrigerant end of described evaporative condenser 3.So make to bring about the desired sensation
Body cooler is configured to first order cooler, and evaporative condenser is configured to second-stage cooler, forms the cooling of two-stage tandem formula
Exotherm, the high exhaust temperature being capable of effectively utilizes second heat pump, thus producing high-temperature-hot-water, reduces evaporation simultaneously
The power of condenser and the energy consumption of the first heat pump；Heat of high temperature can be discharged by first order cooler (gas cooler)
To needing heat position (as interior, cold water water pipe etc.) to carry out heat release, to improve the water of indoor environment temperature or hot water preparing
Temperature, and can carry out heat exchange by evaporative condenser (second-stage cooler) and the first heat pump circulating system, specifically, due to the
The evaporating temperature of one heat pump is sufficiently low, thus effectively reducing the temperature of the second heat pump cold-producing medium, and then enters to celebrate a festival
Stream can reach lower temperature and ensure that cold-producing medium mass dryness fraction is sufficiently low after expanding.
Preferably, described condenser 12 is set to carry out heat exchange with low temperature water lines 4；Described gas cooler 22 is set to
Carry out heat exchange with middle warm water pipeline 5.By above-mentioned set-up mode can by condenser low temperature water lines are heated from
And produce the water of middle temperature, heated by gas cooler centering warm water pipeline thus produced high temperature water such that it is able to
When produce middle warm water and high-temperature water, can adapt to the various needs to different hot water temperatures in practical situation.
Preferably, described low temperature water lines 4 include low temperature water inlet end 41 and middle temperature water side 42, wherein said middle temperature water outlet
End 42 branches into the first via 421 and 422 two, the second tunnel branch road, and the described first via 421 connects to middle warm water user's request end, the
Two tunnels 422 are connected with the middle temperature water inlet end 51 of described middle warm water pipeline 5.By the supply channel in the first heat pump in cascade system
Middle warm water after heat exchange is connected by the first via can be provided to the user of warm water in demand to middle warm water user's request end
Middle warm water after heat exchange in first heat pump is connected to the second heat pump by the second tunnel by the middle warm water of relevant temperature simultaneously
Middle temperature water inlet end in system, can provide source, provide temperature to be in middle temperature simultaneously for supplying water in the second heat pump
Middle warm water's (temperature is about at 60-70 DEG C), provides condition (warm water source in offer) for producing high-temperature-hot-water (more than 70 DEG C),
This utility model can produce up to more than 95 DEG C of ultrahigh-temperature hot water.
Preferably, after the high-temperature water outlet end 52 of described middle warm water pipeline 5 is converged by water mixing valve 9 with the described first via 421
It is commonly connected to water demand end.High-temperature-hot-water after heat exchange for the supply channel in the second heat pump in cascade system is passed through
Pipeline connects to high-temperature water user's request end the high-temperature-hot-water that the user of demand high-temperature water can be provided with relevant temperature, by mixed
The mode of water valve can Intelligent adjustment, meet client's centering temperature and/or the demand of high temperature water.
Preferably, described middle temperature water side 42 is branched into the first via 421 and the second tunnel 422 by arranging shunt valve 8
Two branch roads；And it is additionally provided with water pump 7 in described low temperature water lines 4.Can be effective by arranging the frame mode of shunt valve
The effect of point moisture stream is realized on ground, setting water pump plays the effect effectively pumping current as needed.
Preferably, be additionally provided with described second heat pump defrosting branch road 6, described defrosting branch road 6 one end connect to
Between described gas cooler 22 and described evaporative condenser 3, the other end connects to described high pressure evaporator 23.By in setting
The defrosting branch road stated can effectively utilize the heat of compressor and/or the heat in water route, according to the actual needs (by for example controlling
Compressor, water pump and electromagnetic valve), the frost tied in high pressure evaporator is dissolved and is removed.
Preferably, the pipeline that the sharp evaporative condenser 3 of described gas cooler 22 is located is additionally provided with the first electromagnetic valve
25；Described defrosting branch road 6 is additionally provided with the second electromagnetic valve 61.By arranging the structure side of the first electromagnetic valve in above-mentioned position
Formula, the control that the first heat pump that overlapping connects and the second heat pump can be opened or closed, with right further
Low-temperature heating or hot water preparing are controlled；By arranging the frame mode of the second electromagnetic valve on defrosting branch road, can be to removing
Frost effect is controlled, certainly this be outdoor environment temperature relatively low to lead to high pressure evaporator to produce in the case of frosting
The control operation of execution is such that it is able to affect in the case that whole heat pump normally runs work, it to be carried out in frosting
Defrosting, to ensure normal, the safe operation of heat pump.
Preferably, described defrosting branch road 6 is the pipe (preferably capillary tube) with throttling action, and during defrost, coolant is also logical
Cross gas cooler 22 therefrom to absorb heat in warm water pipeline 5.Be can ensure that by defrosting branch road is set to the rational tubule of diameter
The cold-producing medium of compressor outlet has appropriate pressure and temperature, thus ensureing that it can quick defrost when the vaporizer of frosting；
And during defrost, coolant absorbs heat also by gas cooler therefrom warm water pipeline, can effectively utilize the heat pair in water pipe
Coolant is heated, and then carries out defrost effect to vaporizer further, improves the effect of defrost.
Preferably, adopt R134A as cold-producing medium in described first heat pump, adopt in described second heat pump
R744 is as cold-producing medium.Heat because the first heat pump belongs to the heat pump under room temperature or General low temperature, can using R134A
Heat pump in the case of kind produces the demand of phase hot water (middle temperature)；And the second heat pump then belongs to compared with low temperature or ultralow temperature
Heat pump under operating mode heats, and (its main component is CO now to adopt R7442) as cold-producing medium frame mode, can utilize
CO2The special characteristics of coolant, can evoke and be applied to heating of heat pump under low temperature condition, and COP (Energy Efficiency Ratio) is still
Higher, the hot water (high-temperature water) of higher temperature can be obtained, take full advantage of the energy of R744 system, utilization rate is up to 95%.
Because heat pump water system of the prior art exists at a temperature of low temperature environment, performance degradation is serious, produces out
The not high technical problem of hot water temperature, therefore this utility model research design go out a kind of use that can manufacture 90 DEG C of high-temperature-hot-waters
Super low temperature heat pump system and its control method in heating.This heat pump takes full advantage of R744 density in low temperature environment
Greatly, the unconspicuous characteristic of performance degradation, and R744 compressor high temperature side up to 140 DEG C of high-temperature exhaust air temperature is preparing 95 DEG C
High-temperature-hot-water；Further, the gas cooler of R744 hot pump in low temp system is divided into two, middle warm water and high temperature R744 system
Cryogen obtains high-temperature water in high temperature section gas cooler heat exchange, and R134A cold-producing medium is cold in second gas with middle temperature R744 cold-producing medium
But heat exchange in device (i.e. evaporative condenser)；After the gas cooler of R744 hot pump in low temp system is divided into two, cascade system can be made
The compressor power consumption of R134A side reduces, and is conducive to selecting small-power, vibration is little, noise is little, condensation temperature higher (70 DEG C)
R134A screw compressor rather than high-power, vibration is big, noise is big, the R134A piston compressor of condensation temperature relatively low (60 DEG C).
Preferably, as outdoor environment temperature TRingWhen >=-10 DEG C, described second heat pump is controlled to follow under Trans-critical cycle state
Ring；As outdoor environment temperature TRingWhen≤- 10 DEG C, described second heat pump is controlled to circulate under subcritical state.When outdoor ring
Border temperature TRingWhen >=-10 DEG C, explanation system is under General low temperature (or title temperature is higher) work condition environment, the now steaming of this system
Send out temperature comparatively higher, be obtained in that higher heat-pump hot-water temperature by selecting Trans-critical cycle kind of refrigeration cycle to carry out executing,
As outdoor environment temperature TRingWhen≤- 10 DEG C, explanation system is under low temperature or ultralow-temperature operation conditions environment, the now evaporation of this system
Temperature is comparatively relatively low, if using trans critical cycle, can expend substantial amounts of compressor horsepower, in order to reduce compressor wasted work
And certain heat that heats can also be obtained to produce high-temperature-hot-water, Select and Apply the mode of subcritical state circulation.
A kind of control method of the super low temperature heat pump system for heating of this utility model, it uses aforesaid ultralow warm
Pumping system, controls the first heat pump and the second heat pump each by controlling first throttle device and second throttling device
Carry out heat supply.Using the first heat pump and second heat pump of superposition type, and adopt gas cold in the second heat pump
But the connected mode of device and evaporative condenser two-stage type heat release, can overcome heat pump heating system of the prior art in low temperature ring
The serious defect of performance degradation at a temperature of border so that stable system performance and will not decay, system energy efficiency maintains all the time
Higher level；The system of enabling to is suitable for less than -40 DEG C of ultra-low temperature surroundings temperature and can also keep original performance；And
By the first and second throttling arrangements to overlapping be the first and second heat pumps be opened and closed and cold medium flux control, can
Carry out effective control action with practical situation as needed, complete to produce under ultralow-temperature operation conditions heat and performance unattenuated,
Efficiency is high.
Preferably, when also including defroster duct and the first electromagnetic valve and the second electromagnetic valve in described heating system：
1) when needing system normally to be heated, then open the first electromagnetic valve, close the second electromagnetic valve so that first is hot
Pumping system and the second heat pump normally heat simultaneously；
2) when needing system to be defrosted, then open the second electromagnetic valve, close the first electromagnetic valve so that the first heat pump system
System does not work, and the second heat pump carries out defrost to high pressure evaporator.
This is the concrete rate-determining steps of super low temperature heat pump heating system of the present utility model, by making the first electromagnetic valve
Open, the second closed electromagnetic valve, defrosting branch road can be carried out closing so that not carrying out defrosting, system of opening normally heats and loops back
Road, to produce hot-air or hot water, completes the purpose heating and effect under ultralow-temperature operation conditions；By the first electromagnetic valve is closed
Close, the second electromagnetic valve is opened, can by defrosting branch road carry out opening allow to carry out defrosting, the system that simultaneously closes off normally heats circulation
Loop, not produce hot-air or hot water, completes the purpose of defrosting defrost and effect under ultralow-temperature operation conditions；Make ultralow temperature
Normally heat and each independently normally run with defrost action.
Those skilled in the art is it is easily understood that on the premise of not conflicting, above-mentioned each advantageous manner can be free
Ground combination, superposition.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all this
Any modification, equivalent and improvement made within the spirit of utility model and principle etc., should be included in this utility model
Protection domain within.The above is only preferred implementation of the present utility model it is noted that for the art
For those of ordinary skill, on the premise of without departing from this utility model know-why, some improvement and modification can also be made,
These improve and modification also should be regarded as protection domain of the present utility model.
Claims (11)
1. a kind of for heating super low temperature heat pump system it is characterised in that：The first heat pump connecting including overlapping and
Two heat pumps, wherein said first heat pump is high-temperature level, and it includes the first compressor (11), condenser (12) and first
Throttling arrangement (13)；Described second heat pump is low-temperature level, and it includes the second compressor (21), gas cooler (22), height
Pressure vaporizer (23) and second throttling device high pressure evaporator (24)；
Described first heat pump is combined by evaporative condenser (3) overlapping with described second heat pump, wherein institute
State the first heat pump and pass through described evaporative condenser (3) heat absorption, described second heat pump passes through described evaporative condenser (3)
Heat release.
2. super low temperature heat pump system according to claim 1 it is characterised in that：Described gas cooler (22) is arranged on institute
State the upward refrigerant end of evaporative condenser (3).
3. the super low temperature heat pump system according to one of claim 1-2 it is characterised in that：Described condenser (12) is set to
Carry out heat exchange with low temperature water lines (4)；Described gas cooler (22) is set to carry out heat exchange with middle warm water pipeline (5).
4. super low temperature heat pump system according to claim 3 it is characterised in that：Described low temperature water lines (4) include low temperature
Water inlet end (41) and middle temperature water side (42), wherein said middle temperature water side (42) branches into the first via (421) and the second tunnel
(422) two branch roads, described second tunnel (422) is connected with the middle temperature water inlet end (51) of described middle warm water pipeline (5).
5. super low temperature heat pump system according to claim 4 it is characterised in that：The high temperature of described middle warm water pipeline (5) goes out
Water end (W.E.) (52) is connected to water demand end by water mixing valve (9) with the described first via (421).
6. the super low temperature heat pump system according to one of claim 4-5 it is characterised in that：Described middle temperature water side (42) is led to
Cross setting shunt valve (8) and branched into the first via (421) and (422) two, the second tunnel branch road；And in described low temperature water lines
(4) it is additionally provided with water pump (7) on.
7. according to claim 1-2, super low temperature heat pump system described in one of 4-5 it is characterised in that：Described second heat pump
In be additionally provided with defrosting branch road (6), described defrosting branch road (6) one end connect to described gas cooler (22) and described evaporation
Between condenser (3), the other end connects to described high pressure evaporator (23).
8. super low temperature heat pump system according to claim 7 it is characterised in that：In described gas cooler (22) and steaming
It is additionally provided with the first electromagnetic valve (25) on the pipeline that the condenser (3) that feels cold is located；Described defrosting branch road (6) is additionally provided with second
Electromagnetic valve (61).
9. super low temperature heat pump system according to claim 7 it is characterised in that：Described defrosting branch road (6) is to have throttling
The pipe of effect, and during defrost, coolant absorbs heat also by gas cooler (22) therefrom warm water pipeline (5).
10. according to claim 1-2, super low temperature heat pump system described in one of 4-5,8-9 it is characterised in that：Described first heat
Adopt R134A in pumping system as cold-producing medium, adopt R744 in described second heat pump as cold-producing medium.
11. super low temperature heat pump systems according to claim 10 it is characterised in that：As outdoor environment temperature TRing≥-10℃
When, control described second heat pump to circulate under Trans-critical cycle state；As outdoor environment temperature TRingWhen≤- 10 DEG C, control described
Second heat pump circulates under subcritical state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620887758.6U CN206001737U (en) | 2016-08-10 | 2016-08-10 | A kind of super low temperature heat pump system for heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620887758.6U CN206001737U (en) | 2016-08-10 | 2016-08-10 | A kind of super low temperature heat pump system for heating |
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| Publication Number | Publication Date |
|---|---|
| CN206001737U true CN206001737U (en) | 2017-03-08 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620887758.6U Expired - Fee Related CN206001737U (en) | 2016-08-10 | 2016-08-10 | A kind of super low temperature heat pump system for heating |
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| CN (1) | CN206001737U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106196683A (en) * | 2016-08-10 | 2016-12-07 | 燕园德普科技（北京）有限公司 | A kind of super low temperature heat pump system for heating and control method thereof |
| CN111288537A (en) * | 2019-12-18 | 2020-06-16 | 南京久鼎精机冷冻设备有限公司 | Transcritical CO2Composite heat pump system |
| CN114754430A (en) * | 2022-04-12 | 2022-07-15 | 新科环保科技有限公司 | Air-conditioning heat pump system for preparing high-temperature hot water at low ambient temperature |
| CN115013997A (en) * | 2022-06-21 | 2022-09-06 | 同济大学 | Supercooling and overheating double-effect type multistage semi-overlapping heat pump cycle |
-
2016
- 2016-08-10 CN CN201620887758.6U patent/CN206001737U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106196683A (en) * | 2016-08-10 | 2016-12-07 | 燕园德普科技（北京）有限公司 | A kind of super low temperature heat pump system for heating and control method thereof |
| CN111288537A (en) * | 2019-12-18 | 2020-06-16 | 南京久鼎精机冷冻设备有限公司 | Transcritical CO2Composite heat pump system |
| CN111288537B (en) * | 2019-12-18 | 2024-03-12 | 南京久鼎精机冷冻设备有限公司 | Transcritical CO 2 Composite heat pump system |
| CN114754430A (en) * | 2022-04-12 | 2022-07-15 | 新科环保科技有限公司 | Air-conditioning heat pump system for preparing high-temperature hot water at low ambient temperature |
| CN115013997A (en) * | 2022-06-21 | 2022-09-06 | 同济大学 | Supercooling and overheating double-effect type multistage semi-overlapping heat pump cycle |
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