CN105135578A - High-efficiency refrigeration method and device - Google Patents
High-efficiency refrigeration method and device Download PDFInfo
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- CN105135578A CN105135578A CN201510643479.5A CN201510643479A CN105135578A CN 105135578 A CN105135578 A CN 105135578A CN 201510643479 A CN201510643479 A CN 201510643479A CN 105135578 A CN105135578 A CN 105135578A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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Abstract
The invention relates to a high-efficiency refrigeration method and device. The device comprises a cold water unit, a freezing pump, a cooling pump, a terminal heat exchanger, a cooling tower, a freezing circulation pipeline and pipe piece, and a refrigeration system, wherein the refrigeration system comprises a cooling circulation pipeline and pipe piece. The high-efficiency refrigeration device can be highly matched with an actual technology requirement by limiting the freezing outlet water temperature of the cold water unit, so that the refrigeration energy efficiency of the cold water unit is improved by 20-100% or more. According to the device, the refrigerating capacity of a centrifugal compressor in the rated running condition is limited to 50-80% of the designed refrigerating capacity, and simultaneously the refrigerating capacity of the designed high-efficiency area of the centrifugal compressor is 80-120% of the rated refrigerating capacity, so that the high-efficiency area of the centrifugal compressor can deviate the rated running condition point having little running time as possible, relatively low environment temperature time sections (the relative running time is relatively long) are added in the high-efficiency area design range of the centrifugal compressor, further the running energy efficiency of the centrifugal compressor is improved in transition seasons, and energy can be saved by 20% or more.
Description
Technical field
The invention belongs to energy technology field, be specifically related to a kind of highly effective refrigeration method and device.
Background technology
In field of air conditioning, under handpiece Water Chilling Units standard condition, freezing leaving water temperature 7 DEG C (corresponding saturated evaporating temperature is generally 5 DEG C), corresponding fan coil leaving air temp 15 DEG C.
In actual use, because of the difference of technological requirement, often fan coil leaving air temp is considerably beyond 15 DEG C (as fields etc. such as weavings), or freezing leaving water temperature is considerably beyond 7 DEG C (as radiative cooling air conditioning systems etc.), now, handpiece Water Chilling Units can produce refrigeration efficiency loss.Such as, when freezing leaving water temperature exceedes its rated temperature 5 DEG C, its refrigeration efficiency about loses 20%, and when freezing leaving water temperature exceedes its rated temperature 8 DEG C, then the loss of its refrigeration efficiency reaches 40%.
In freezing field, the specified freezing leaving water temperature of handpiece Water Chilling Units is usually according to being frozen the final technological requirement thermal creep stress of medium (e.g., salt solution).But, when medium be frozen the forward and backward temperature difference very large time (e.g., medium is frozen first 25 DEG C, freezing after-15 DEG C), if only according to the specified freezing leaving water temperature of final technological requirement thermal creep stress refrigeration unit, now, handpiece Water Chilling Units efficiency can not reach optimization.
In air-conditioning and freezing field, handpiece Water Chilling Units specified cooling inflow temperature is usually according to 30 DEG C of designs (corresponding saturated condensation temperature is generally 37 DEG C), when transition season (cooling inflow temperature is far below 30 DEG C) still needs to use handpiece Water Chilling Units, now handpiece Water Chilling Units efficiency rationally can not improve because cooling the reduction of inflow temperature, produces efficiency loss.
At present, solve the problem relatively effective method, is to adopt inverter controlled water chiller.But the frequency converter that inverter controlled water chiller adopts, can produce irreversible harmonic power and motor efficiency losses.According to the efficiency data analysis of the actual detection of inverter controlled water chiller, comparatively, the maximum efficiency loss of inverter controlled water chiller reaches more than 20% for inverter controlled water chiller and the reasonable Energy Efficiency Ratio under corresponding operating mode.And only 8 years usual service life of frequency converter, meanwhile, also have that fault rate is high, reliability is low, the problem that difficult in maintenance, cost is high.
Therefore, need a kind of technology, can comprehensively solve the problem.
Summary of the invention
Object of the present invention, be to realize a kind of highly effective refrigeration method and device, the present invention solves the first technical scheme that its technical problem adopts: a kind of highly effective refrigeration method, comprise by handpiece Water Chilling Units, refrigerating water pump, terminal heat exchanger, freeze cycle pipeline and pipe fitting, coolant pump, cooling tower, the refrigeration system that cool cycles pipeline and pipe fitting form, it is characterized in that: described handpiece Water Chilling Units, when specified freezing leaving water temperature >=13 of the actual temperature-handpiece Water Chilling Units after gas is processed DEG C and≤16 DEG C time, then described handpiece Water Chilling Units designs freezing leaving water temperature and is adjusted to, actual temperature-handpiece Water Chilling Units after gas is processed designs freezing leaving water temperature >=0 DEG C and≤8 DEG C, or when specified freezing leaving water temperature >=5 of the actual temperature-handpiece Water Chilling Units after liquid is processed DEG C and≤8 DEG C time, then the freezing leaving water temperature of the design of described handpiece Water Chilling Units is adjusted to, and the actual temperature-handpiece Water Chilling Units after liquid is processed designs freezing leaving water temperature >=0 DEG C and≤5 DEG C.
The specified freezing leaving water temperature of described actual temperature-handpiece Water Chilling Units after gas is processed, or liquid be processed after the specified freezing leaving water temperature of actual temperature-handpiece Water Chilling Units, wherein "-" is minus sign (remaining with).Actual temperature-handpiece Water Chilling Units after described gas is processed designs freezing leaving water temperature, or liquid be processed after actual temperature-handpiece Water Chilling Units design freezing leaving water temperature, "-" is wherein minus sign (lower with).
Actual temperature after described gas is processed, refers to that fan coil air outlet temperature is (lower same.As: under air conditioning condition, the normal leaving air temp of fan coil is 15 DEG C).Specified freezing leaving water temperature >=0 of actual temperature-handpiece Water Chilling Units after described gas is processed DEG C and≤8 DEG C.Specified freezing leaving water temperature >=13 of actual temperature-handpiece Water Chilling Units after described gas is processed DEG C and≤16 DEG C, or liquid be processed after specified freezing leaving water temperature >=5 of actual temperature-handpiece Water Chilling Units DEG C and≤8 DEG C, compare with standard condition, difference exceeds 5-8 DEG C.And under air conditioning condition, improving 5-8 DEG C of freezing leaving water temperature, handpiece Water Chilling Units efficiency about improves 20-40%.
Further, described handpiece Water Chilling Units, as the specified freezing leaving water temperature > 16 DEG C of the actual temperature-handpiece Water Chilling Units after gas is processed and≤18 DEG C time, then described handpiece Water Chilling Units designs freezing leaving water temperature and is adjusted to, and the actual temperature-handpiece Water Chilling Units after gas is processed designs freezing leaving water temperature >=0 DEG C and≤10 DEG C; Or as the specified freezing leaving water temperature > 8 DEG C of the actual temperature-handpiece Water Chilling Units after liquid is processed and≤10 DEG C time, then described handpiece Water Chilling Units designs freezing leaving water temperature and is adjusted to, and the actual temperature-handpiece Water Chilling Units after liquid is processed designs freezing leaving water temperature >=0 DEG C and≤6 DEG C.Under these conditions, by improving freezing leaving water temperature, handpiece Water Chilling Units efficiency about can improve 40-50%.
Further, described handpiece Water Chilling Units, as the specified freezing leaving water temperature > 18 DEG C of the actual temperature-handpiece Water Chilling Units after gas is processed and≤20 DEG C time, then described handpiece Water Chilling Units designs freezing leaving water temperature and is adjusted to, and the actual temperature-handpiece Water Chilling Units after gas is processed designs freezing leaving water temperature >=0 DEG C and≤12 DEG C; Or as the specified freezing leaving water temperature > 10 DEG C of the actual temperature-handpiece Water Chilling Units after liquid is processed and≤12 DEG C time, then described handpiece Water Chilling Units designs freezing leaving water temperature and is adjusted to, and the actual temperature-handpiece Water Chilling Units after liquid is processed designs freezing leaving water temperature >=0 DEG C and≤7 DEG C.Under these conditions, by improving freezing leaving water temperature, handpiece Water Chilling Units efficiency about can improve 50-70%.
Further, described handpiece Water Chilling Units, as the specified freezing leaving water temperature > 20 DEG C of the actual temperature-handpiece Water Chilling Units after gas is processed, then described handpiece Water Chilling Units designs freezing leaving water temperature and is adjusted to, and the actual temperature-handpiece Water Chilling Units after gas is processed designs freezing leaving water temperature >=0 DEG C and≤14 DEG C; Or as the specified freezing leaving water temperature > 12 DEG C of the actual temperature-handpiece Water Chilling Units after liquid is processed, then described handpiece Water Chilling Units designs freezing leaving water temperature and is adjusted to, and the actual temperature-handpiece Water Chilling Units after liquid is processed designs freezing leaving water temperature >=0 DEG C and≤8 DEG C.Under these conditions, by improving freezing leaving water temperature, handpiece Water Chilling Units efficiency about can improve more than 70%.
Further, described refrigeration system, when actual temperature >=12 after the temperature-gas of processed gas is processed DEG C and≤20 DEG C time, maybe when actual temperature >=10 after the temperature-liquid of processed liquid is processed DEG C and≤13 DEG C time, described refrigeration system is compound cascade refrigeration system, the specified freezing leaving water temperature of design of described its handpiece Water Chilling Units of compound cascade refrigeration system from high to low, and along the treatment media successively from high to low of processed medium temperature, difference >=5 between the specified freezing leaving water temperature of described compound cascade refrigeration system handpiece Water Chilling Units DEG C and≤15 DEG C, the refrigerating plant of described compound cascade refrigeration system is handpiece Water Chilling Units, or cooling tower, or more the two combination.
The temperature of described processed gas is rated temperature, or weighted mean, or has the weighted mean of economy scope.Described treatment media is gas or liquid.Described compound cascade refrigeration system, for processed medium is first cooled by the handpiece Water Chilling Units that specified freezing leaving water temperature is higher, and then is cooled (lower same) by the handpiece Water Chilling Units that specified freezing leaving water temperature is lower.
Further, described refrigeration system, as the actual temperature > after the temperature-gas of processed gas is processed 20 DEG C, maybe as the actual temperature > after the temperature-liquid of processed liquid is processed 13 DEG C, described refrigeration system is compound cascade refrigeration system, the specified freezing leaving water temperature of design of described its handpiece Water Chilling Units of compound cascade refrigeration system from high to low, and along the treatment media successively from high to low of processed medium temperature, difference >=8 between the specified freezing leaving water temperature of described compound cascade refrigeration system handpiece Water Chilling Units DEG C and≤25 DEG C, the refrigerating plant of described compound cascade refrigeration system is handpiece Water Chilling Units, or cooling tower, or more the two combination.
The present invention solves the second technical scheme that its technical problem adopts: a kind of high performance refrigerating unit, comprise compressor, evaporimeter, condenser, throttling arrangement, it is characterized in that: described high performance refrigerating unit designs freezing leaving water temperature temperature and is, actual temperature-handpiece Water Chilling Units after gas is processed designs freezing leaving water temperature >=0 DEG C and≤8 DEG C, or liquid be processed after actual temperature-handpiece Water Chilling Units design freezing leaving water temperature >=0 DEG C and≤5 DEG C.
Further, described high performance refrigerating unit designs freezing leaving water temperature, actual temperature-handpiece Water Chilling Units after gas is processed designs freezing leaving water temperature >=0 DEG C and≤14 DEG C, or liquid be processed after actual temperature-handpiece Water Chilling Units design freezing leaving water temperature >=0 DEG C and≤8 DEG C.
Further, described compressor is centrifugal compressor, and during the specified cooling inflow temperature of described centrifugal compressor 30 DEG C, corresponding refrigerating capacity is the 50%-80% of specified refrigerating capacity, and it designs the 80%-120% that efficient district is specified refrigerating capacity.
The efficient district of centrifugal compressor can be departed from the less specified freezing leaving water temperature point of the compressor corresponding to hot environment running time by the design of described centrifugal compressor as far as possible, with the efficient district scope of design more between realization operationally, the environment temperature lower period includes centrifugal compressor in, further raising centrifugal compressor, at the operational energy efficiency of transition season, can realize energy-conservation more than 20% usually; The present invention also can arrange flow spoiler in the heat exchanger tube of evaporimeter, condenser, can reduce freezing with cooling convergence degree, can improve refrigerating plant efficiency.
Compared with prior art, the present invention has following beneficial effect: significantly can reduce the gap between handpiece Water Chilling Units rated designs operating mode and actual condition.Therefore, effectively can improve refrigeration efficiency, realize energy-conservation object.Meanwhile, the present invention has good economy, practicality.
Accompanying drawing explanation
Fig. 1 is a kind of highly effective refrigeration method of the present invention: gaseous media system schematic diagram;
Fig. 2 is a kind of highly effective refrigeration method of the present invention: liquid medium system schematic;
Fig. 3 is a kind of high performance refrigerating unit of the present invention: device schematic diagram;
Wherein: 1-1, air inlet, 1-2, inlet, 2, filter, 3-1, surface cooler, 3-2, shell and tube exchanger, 4, blower fan, 5-1, air outlet, 5-2, liquid outlet, 6, fan coil casing, 7, valve, 8, refrigerating water pump, 9, connecting hose, 10, evaporimeter, 11, throttling arrangement, 12, compressor, 13, coolant pump, 14, condenser, 15, cooling tower.
Detailed description of the invention
As shown in Figure 1-2, a kind of highly effective refrigeration method of the present invention schematic diagram, (comprised: evaporimeter 10 by handpiece Water Chilling Units, throttling arrangement 11, compressor 12, condenser 14), refrigerating water pump 8, terminal heat exchanger (surface cooler 3-1, shell-and-tube heat exchanger 3-2), freeze cycle pipeline and pipe fitting, the refrigeration system that coolant pump 13, cooling tower 15, cool cycles pipeline and pipe fitting form.In the present embodiment one, two, freeze cycle and cooling recirculation system are regular circulation system, comprise necessary assembly (accompanying drawing does not show entirely).
The specified freezing leaving water temperature of described actual temperature-handpiece Water Chilling Units after gas is processed, or liquid be processed after the specified freezing leaving water temperature of actual temperature-handpiece Water Chilling Units, wherein "-" is minus sign (remaining with).Actual temperature-handpiece Water Chilling Units after described gas is processed designs freezing leaving water temperature, or liquid be processed after actual temperature-handpiece Water Chilling Units design freezing leaving water temperature, "-" is wherein minus sign (lower with).
Described refrigeration system, when actual temperature >=12 after the temperature-gas of processed gas is processed DEG C and≤20 DEG C time, maybe when actual temperature >=10 after the temperature-liquid of processed liquid is processed DEG C and≤13 DEG C time, described refrigeration system is compound cascade refrigeration system, the specified freezing leaving water temperature of design of described its handpiece Water Chilling Units of compound cascade refrigeration system from high to low, and along the treatment media successively from high to low of processed medium temperature, difference >=5 between the specified freezing leaving water temperature of described compound cascade refrigeration system handpiece Water Chilling Units DEG C and≤15 DEG C, the refrigerating plant of described compound cascade refrigeration system is handpiece Water Chilling Units, or cooling tower, or more the two combination (this part accompanying drawing does not show).
Or described refrigeration system, as the actual temperature > after the temperature-gas of processed gas is processed 20 DEG C, maybe as the actual temperature > after the temperature-liquid of processed liquid is processed 13 DEG C, described refrigeration system is compound cascade refrigeration system, the specified freezing leaving water temperature of design of described its handpiece Water Chilling Units of compound cascade refrigeration system from high to low, and along the treatment media successively from high to low of processed medium temperature, difference >=8 between the specified freezing leaving water temperature of described compound cascade refrigeration system handpiece Water Chilling Units DEG C and≤25 DEG C, the refrigerating plant of described compound cascade refrigeration system is handpiece Water Chilling Units, or cooling tower, or more the two combination.This part accompanying drawing does not show.
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail:
Case study on implementation one, as shown in Figure 1, present case is gaseous media system schematic diagram, processed gas is after air inlet 1-1, filter 2 carry out heat exchange with chilled water in surface cooler 3-1, by blower fan 4 by the gas after process, discharge through air outlet 5-1, and deliver to use system.Chilled water after intensification, under refrigerating water pump 8 acts on, the evaporimeter 10 of Returning water unit is lowered the temperature, and then enters surface cooler and completes next round circulation.
The handpiece Water Chilling Units of case study on implementation one designs freezing leaving water temperature and is:
When specified freezing leaving water temperature >=13 of the actual temperature-handpiece Water Chilling Units after gas is processed DEG C and≤16 DEG C time, then handpiece Water Chilling Units designs freezing leaving water temperature and is adjusted to, and the actual temperature-handpiece Water Chilling Units after gas is processed designs freezing leaving water temperature >=0 DEG C and≤8 DEG C;
As the specified freezing leaving water temperature > 16 DEG C of the actual temperature-handpiece Water Chilling Units after gas is processed and≤18 DEG C time, then handpiece Water Chilling Units designs freezing leaving water temperature and is adjusted to, and the actual temperature-handpiece Water Chilling Units after gas is processed designs freezing leaving water temperature >=0 DEG C and≤10 DEG C;
As the specified freezing leaving water temperature > 18 DEG C of the actual temperature-handpiece Water Chilling Units after gas is processed and≤20 DEG C time, then handpiece Water Chilling Units designs freezing leaving water temperature and is adjusted to, and the actual temperature-handpiece Water Chilling Units after gas is processed designs freezing leaving water temperature >=0 DEG C and≤12 DEG C;
As the specified freezing leaving water temperature > 20 DEG C of the actual temperature-handpiece Water Chilling Units after gas is processed, then handpiece Water Chilling Units designs freezing leaving water temperature and is adjusted to, and the actual temperature-handpiece Water Chilling Units after gas is processed designs freezing leaving water temperature >=0 DEG C and≤14 DEG C.
Case study on implementation two, as shown in Figure 2, present case is liquid medium system schematic.Processed liquid, enters into shell-and-tube heat exchanger 3-2 by inlet 1-2, delivers to use system after cooling from liquid outlet 5-2.Chilled water after intensification, under refrigerating water pump 8 acts on, the evaporimeter 10 of Returning water unit is lowered the temperature, and then enters surface cooler and completes next round circulation.
The handpiece Water Chilling Units of case study on implementation two designs freezing leaving water temperature and is:
When specified freezing leaving water temperature >=5 of the actual temperature-handpiece Water Chilling Units after liquid is processed DEG C and≤8 DEG C time, then handpiece Water Chilling Units designs freezing leaving water temperature and is adjusted to, and the actual temperature-handpiece Water Chilling Units after liquid is processed designs freezing leaving water temperature >=0 DEG C and≤5 DEG C;
As the specified freezing leaving water temperature > 8 DEG C of the actual temperature-handpiece Water Chilling Units after liquid is processed and≤10 DEG C time, then handpiece Water Chilling Units designs freezing leaving water temperature and is adjusted to, and the actual temperature-handpiece Water Chilling Units after liquid is processed designs freezing leaving water temperature >=0 DEG C and≤6 DEG C;
As the specified freezing leaving water temperature > 10 DEG C of the actual temperature-handpiece Water Chilling Units after liquid is processed and≤12 DEG C time, then handpiece Water Chilling Units designs freezing leaving water temperature and is adjusted to, and the actual temperature-handpiece Water Chilling Units after liquid is processed designs freezing leaving water temperature >=0 DEG C and≤7 DEG C;
As the specified freezing leaving water temperature > 12 DEG C of the actual temperature-handpiece Water Chilling Units after liquid is processed, then handpiece Water Chilling Units designs freezing leaving water temperature and is adjusted to, and the actual temperature-handpiece Water Chilling Units after liquid is processed designs freezing leaving water temperature >=0 DEG C and≤8 DEG C.
Case study on implementation one, two, according to actual condition, the freezing leaving water temperature of restriction handpiece Water Chilling Units, makes it to require to be identical with actual process, thus the refrigeration efficiency of raising handpiece Water Chilling Units is more than 20% to 100%.
Case study on implementation one, two design principles are:
Theoretical efficiency=refrigeration unit evaporating temperature/(refrigeration unit condensation temperature-refrigeration unit evaporating temperature)
In field of air conditioning, under handpiece Water Chilling Units standard condition, freezing specified leaving water temperature 7 DEG C (corresponding saturated evaporating temperature 5 DEG C), corresponding fan coil leaving air temp 15 DEG C.
When specified freezing leaving water temperature >=13 of the actual temperature after gas is processed-freezing unit DEG C≤16 DEG C, differ at 5-8 DEG C with rated temperature difference 15-7=8 DEG C.
When freezing leaving water temperature exceedes its rated temperature 5 DEG C, its refrigeration efficiency about loses 20%, and when freezing leaving water temperature exceedes its rated temperature 8 DEG C, then the loss of its refrigeration efficiency reaches 40%.
Therefore, compare with standard condition, difference exceeds 5-8 DEG C.And under air conditioning condition, improving 5-8 DEG C of freezing leaving water temperature, handpiece Water Chilling Units efficiency about improves 20-40%.The status of criterion of liquid in addition, specified freezing both leaving water temperatures temperature difference of the actual temperature after liquid is processed-freezing unit is 0 degree.
With above principle, other data known.
Case study on implementation three, as shown in Figure 3, present case is a kind of high performance refrigerating unit schematic diagram.Described high performance refrigerating unit is handpiece Water Chilling Units, and described handpiece Water Chilling Units is by evaporimeter 10, and throttling arrangement 11, compressor 12, condenser 14 forms.Compressor described in the implementation case is centrifugal compressor (other form compressors, accompanying drawing does not show), when the specified cooling inflow temperature of centrifugal compressor 30 DEG C, corresponding refrigerating capacity is the 50%-80% of specified refrigerating capacity, and it designs the 80%-120% that efficient district is specified refrigerating capacity.The implementation case effectively can improve handpiece Water Chilling Units efficiency in excessive season, improves comprehensive energy efficiency.
The handpiece Water Chilling Units of case study on implementation three designs freezing leaving water temperature and is:
Described high performance refrigerating unit designs freezing leaving water temperature, and the actual temperature-handpiece Water Chilling Units after gas is processed designs freezing leaving water temperature >=0 DEG C and≤8 DEG C; Or liquid be processed after actual temperature-handpiece Water Chilling Units design freezing leaving water temperature >=0 DEG C and≤5 DEG C;
Described high performance refrigerating unit designs freezing leaving water temperature and also can be, and the actual temperature-handpiece Water Chilling Units after gas is processed designs freezing leaving water temperature >=0 DEG C and≤14 DEG C; Or liquid be processed after actual temperature-handpiece Water Chilling Units design freezing leaving water temperature >=0 DEG C and≤8 DEG C.
The present invention can be built project and provides reducing energy consumption, also can provide energy-saving design for grassroot project, is specially adapted to that air-conditioning temperature is high, the temperature difference is large before and after gas or liquid handling refrigeration system.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (9)
1. a highly effective refrigeration method, comprises by handpiece Water Chilling Units, refrigerating water pump, terminal heat exchanger, freeze cycle pipeline
With pipe fitting, the refrigeration system that coolant pump, cooling tower, cool cycles pipeline and pipe fitting form, it is characterized in that: described handpiece Water Chilling Units, when specified freezing leaving water temperature >=13 of the actual temperature-handpiece Water Chilling Units after gas is processed DEG C and≤16 DEG C time, then described handpiece Water Chilling Units designs freezing leaving water temperature and is adjusted to, and the actual temperature-handpiece Water Chilling Units after gas is processed designs freezing leaving water temperature >=0 DEG C and≤8 DEG C;
Or when specified freezing leaving water temperature >=5 of the actual temperature-handpiece Water Chilling Units after liquid is processed DEG C and≤8 DEG C time, then the freezing leaving water temperature of the design of described handpiece Water Chilling Units is adjusted to, and the actual temperature-handpiece Water Chilling Units after liquid is processed designs freezing leaving water temperature >=0 DEG C and≤5 DEG C.
2. a kind of highly effective refrigeration method according to claim 1, described handpiece Water Chilling Units, after gas is processed
The specified freezing leaving water temperature > 16 DEG C of actual temperature-handpiece Water Chilling Units and≤18 DEG C time, then described handpiece Water Chilling Units designs freezing leaving water temperature and is adjusted to, and the actual temperature-handpiece Water Chilling Units after gas is processed designs freezing leaving water temperature >=0 DEG C and≤10 DEG C;
Or as the specified freezing leaving water temperature > 8 DEG C of the actual temperature-handpiece Water Chilling Units after liquid is processed and≤10 DEG C time, then described handpiece Water Chilling Units designs freezing leaving water temperature and is adjusted to, and the actual temperature-handpiece Water Chilling Units after liquid is processed designs freezing leaving water temperature >=0 DEG C and≤6 DEG C.
3. a kind of highly effective refrigeration method according to claim 1, described handpiece Water Chilling Units, when gas is processed
After the specified freezing leaving water temperature > 18 DEG C of actual temperature-handpiece Water Chilling Units and≤20 DEG C time, then described handpiece Water Chilling Units designs freezing leaving water temperature and is adjusted to, and the actual temperature-handpiece Water Chilling Units after gas is processed designs freezing leaving water temperature >=0 DEG C and≤12 DEG C;
Or as the specified freezing leaving water temperature > 10 DEG C of the actual temperature-handpiece Water Chilling Units after liquid is processed and≤12 DEG C time, then described handpiece Water Chilling Units designs freezing leaving water temperature and is adjusted to, and the actual temperature-handpiece Water Chilling Units after liquid is processed designs freezing leaving water temperature >=0 DEG C and≤7 DEG C.
4. a kind of highly effective refrigeration method according to claim 1, described handpiece Water Chilling Units, when gas is processed
After actual temperature-handpiece Water Chilling Units specified freezing leaving water temperature > 20 DEG C time, then described handpiece Water Chilling Units designs freezing leaving water temperature and is adjusted to, and the actual temperature-handpiece Water Chilling Units after gas is processed designs freezing leaving water temperature >=0 DEG C and≤14 DEG C;
Or as the specified freezing leaving water temperature > 12 DEG C of the actual temperature-handpiece Water Chilling Units after liquid is processed, then described handpiece Water Chilling Units designs freezing leaving water temperature and is adjusted to, and the actual temperature-handpiece Water Chilling Units after liquid is processed designs freezing leaving water temperature >=0 DEG C and≤8 DEG C.
5. a kind of highly effective refrigeration method according to claims 1 to 4, described refrigeration system, when processed gas
Temperature-gas be processed after actual temperature >=12 DEG C and≤20 DEG C time, maybe when actual temperature >=10 after the temperature-liquid of processed liquid is processed DEG C and≤13 DEG C time, described refrigeration system is compound cascade refrigeration system, the specified freezing leaving water temperature of design of described its handpiece Water Chilling Units of compound cascade refrigeration system from high to low, and along the treatment media successively from high to low of processed medium temperature, difference >=5 between the specified freezing leaving water temperature of described compound cascade refrigeration system handpiece Water Chilling Units DEG C and≤15 DEG C, the refrigerating plant of described compound cascade refrigeration system is handpiece Water Chilling Units, or cooling tower, or more the two combination.
6. according to the arbitrary a kind of described highly effective refrigeration method of Claims 1 to 4, described refrigeration system, as the actual temperature > after the temperature-gas of processed gas is processed 20 DEG C, maybe as the actual temperature > after the temperature-liquid of processed liquid is processed 13 DEG C, described refrigeration system is compound cascade refrigeration system, the specified freezing leaving water temperature of design of described its handpiece Water Chilling Units of compound cascade refrigeration system from high to low, and along the treatment media successively from high to low of processed medium temperature, difference >=8 between the specified freezing leaving water temperature of described compound cascade refrigeration system handpiece Water Chilling Units DEG C and≤25 DEG C, the refrigerating plant of described compound cascade refrigeration system is handpiece Water Chilling Units, or cooling tower, or more the two combination.
7. a high performance refrigerating unit, comprises compressor, evaporimeter, condenser, throttling arrangement, it is characterized in that:
Described high performance refrigerating unit designs freezing leaving water temperature temperature, actual temperature-handpiece Water Chilling Units after gas is processed designs freezing leaving water temperature >=0 DEG C and≤8 DEG C, or liquid be processed after actual temperature-handpiece Water Chilling Units design freezing leaving water temperature >=0 DEG C and≤5 DEG C.
8. a kind of high performance refrigerating unit according to claim 7, described high performance refrigerating unit designs freezing leaving water temperature, actual temperature-handpiece Water Chilling Units after gas is processed designs freezing leaving water temperature >=0 DEG C and≤14 DEG C, or liquid be processed after actual temperature-handpiece Water Chilling Units design freezing leaving water temperature >=0 DEG C and≤8 DEG C.
9. a kind of high performance refrigerating unit according to claim 7, described compressor is centrifugal compressor, during the specified cooling inflow temperature of described centrifugal compressor 30 DEG C, corresponding refrigerating capacity is the 50%-80% of specified refrigerating capacity, and it designs the 80%-120% that efficient district is specified refrigerating capacity.
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| CN201510643479.5A CN105135578A (en) | 2015-10-08 | 2015-10-08 | High-efficiency refrigeration method and device |
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| CN201510643479.5A CN105135578A (en) | 2015-10-08 | 2015-10-08 | High-efficiency refrigeration method and device |
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