CN103159275B - Direct-expansion solar heat pump-based seawater desalination device and seawater desalination method therefor - Google Patents

Direct-expansion solar heat pump-based seawater desalination device and seawater desalination method therefor Download PDF

Info

Publication number
CN103159275B
CN103159275B CN201310078923.4A CN201310078923A CN103159275B CN 103159275 B CN103159275 B CN 103159275B CN 201310078923 A CN201310078923 A CN 201310078923A CN 103159275 B CN103159275 B CN 103159275B
Authority
CN
China
Prior art keywords
magnetic valve
tank
vaporizer
heat exchanger
storage tank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201310078923.4A
Other languages
Chinese (zh)
Other versions
CN103159275A (en
Inventor
任建波
吕庆春
刘艳辉
康权
张晓晨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin Institute of Seawater Desalination and Multipurpose Utilization SOA
Original Assignee
Tianjin Institute of Seawater Desalination and Multipurpose Utilization SOA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tianjin Institute of Seawater Desalination and Multipurpose Utilization SOA filed Critical Tianjin Institute of Seawater Desalination and Multipurpose Utilization SOA
Priority to CN201310078923.4A priority Critical patent/CN103159275B/en
Publication of CN103159275A publication Critical patent/CN103159275A/en
Application granted granted Critical
Publication of CN103159275B publication Critical patent/CN103159275B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • Y02A20/138—Water desalination using renewable energy
    • Y02A20/142—Solar thermal; Photovoltaics
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20—Controlling water pollution; Waste water treatment
    • Y02A20/208—Off-grid powered water treatment
    • Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation

Landscapes

  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)

Abstract

The invention discloses a direct-expansion solar heat pump-based seawater desalination device. The direct-expansion solar heat pump-based seawater desalination device comprises a direct-expansion solar heat pump system, a raw material water tank, a heat-storage water tank, a flash tank and a main controller. The direct-expansion solar heat pump system comprises a solar heat-collection evaporator. An outlet of the solar heat-collection evaporator is orderly connected to a second triple valve, a gas-liquid separator, a compressor, a condenser, a liquid storage device, a drying filter, a liquid sight glass, a throttling device, a first triple valve and an inlet of the solar heat-collection evaporator by pipes. The first triple valve is orderly connected to a first solenoid valve, a heat regeneration evaporator, a condensation evaporator, a second solenoid valve and the second triple valve by pipes. The invention also discloses a seawater desalination method adopting the direct-expansion solar heat pump-based seawater desalination device. The direct-expansion solar heat pump-based seawater desalination device can fully utilize solar energy and ambient air heat, and improve energy utilization efficiency to the maximum degree by recovery of steam condensation latent heat, condensed fresh water sensible heat and discharged strong brine sensible heat.

Description

A kind of sea water desalinating plant and method based on direct expanding solar heating pump
Technical field
The invention belongs to solar heat pump and field of sea water desalting technology, relate to a kind of sea water desalinating plant based on direct expanding solar heating pump and utilize it to carry out the method for seawater or brackish water desalination.
Technical background
Water is the source of all life.Along with the industrial or agricultural development, population fast growth, the demand of fresh water will sharply increase, and shortage of fresh water is the serious problems that many countries will face future.Especially in some island and remote area, saltwater lake, water resources is mostly seawater or brackish water, the fresh water famine, power supply simultaneously is also more difficult, but solar energy resources is abundant, therefore utilizing sun power to carry out seawater or brackish water desalination, is the important channel that solves these regional shortage of fresh water problems.The water production rate of tradition passive type solar energy distiller unit daylighting area is too low, is only 4-8kg/m 2d, limited its range of application greatly.Increase although be equipped with the water production rate of the active solar energy Distallation systm unit daylighting area of solar energy collector, because the heat-collecting temperature of solar energy heat collector is higher, cause collecting efficiency very low.
The Chinese invention patent that for example Chinese invention patent of publication number CN1323032C, CN101591042B and application publication number are CN101955238A all discloses and has utilized the solar energy vacuum tube heat collector heating seawater for evaporation, utilize the solar energy sea water desalination apparatus of heat pump recovered steam condensation latent heat, have definite meaning for energy-conservation, but the weak point of device is: heat pump and solar energy collector are two independently systems; In vacuum tube collector, medium temperature is higher, and heat transfer temperature difference is little, and collecting efficiency is lower.The Chinese invention patent that publication number is CN101316080B discloses a kind of solar photovoltaic spot light generating generation electric energy and heat energy of utilizing, after promoting by heat pump as the vapor flash device thermal source of low-temperature multi-effect seawater desalination device, utilize renewable energy source to realize the device of sea water desaltination, this device utilizes the spotlight tracking system to improve the sun power utilising efficiency, but also increased the complexity of system, and do not utilized the condensation latent heat of secondary steam simultaneously.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of sea water desalinating plant based on direct expanding solar heating pump is provided.
Second purpose of the present invention is to provide a kind of method of utilizing the direct expanding solar heating pump sea water desalinating plant to carry out sea water desaltination.
Technical scheme of the present invention is summarized as follows:
A kind of sea water desalinating plant based on direct expanding solar heating pump, comprise direct expanding solar heating pump system, raw material water tank 18, hot water storage tank 17, flash tank 20 and primary controller;
Described direct expanding solar heating pump system comprises solar energy heating vaporizer 12, and the outlet 1 of solar energy heating vaporizer is connected with the entrance 11 of the second threeway 2, gas-liquid separator 3, compressor 4, condenser 5, reservoir 6, device for drying and filtering 7, liquid-sighting glass 8, throttling set 9, the first threeway 10, solar energy heating vaporizer successively by pipeline; Solar Total Irradiance Monitor and the first temperature sensor be arranged on solar energy heating vaporizer 12 the surface or near; The first threeway 10 is connected with the second threeway 2 with the first magnetic valve 13, backheat vaporizer 14, condenser/evaporator 15, the second magnetic valve 16 successively by pipeline; Condenser 5 is arranged at the inside of hot water storage tank 17; Be provided with refrigeration agent in described direct expanding solar heating pump system;
The outlet of raw material water tank 18 is connected with the entrance on hot water storage tank 17 tops with the 3rd magnetic valve 19 successively by pipeline;
The top of hot water storage tank 17 is connected with the 4th magnetic valve 22, flash tank 20 successively by pipeline; Be provided with the second temperature sensor in hot water storage tank 17 inside;
Flash tank 20 bottoms are connected with the first check valve 23, sea water circulating pump 24, the 3rd threeway 25 and hot water storage tank 17 bottoms successively by pipeline; The 3rd threeway 25 is connected with the strong brine entrance 27 of the 5th magnetic valve 26, backheat vaporizer 14 successively by pipeline, and the strong brine outlet 28 of backheat vaporizer 14 is connected with the strong brine delivery pipe; Condenser/evaporator 15 is arranged on the top of flash tank 20 inside, is provided with water-collecting tray 21 below condenser/evaporator 15; Described flash tank 20 tops are provided with product water outlet 32, and product water outlet 32 is connected with water-collecting tray 21, and product water outlet 32 is connected with the water-in on product water tank 29 tops by pipeline, and the bottom of product water tank 29 is provided with the product water feed water inlet; The top of product water tank 29 is connected with the second check valve 30, vacuum pumping pump 31 successively by pipeline;
Described primary controller is electrically connected to the first magnetic valve 13, the second magnetic valve 16, the 3rd magnetic valve 19, the 4th magnetic valve 22, the 5th magnetic valve 26, sea water circulating pump 24, vacuum pumping pump 31, compressor 4, Solar Total Irradiance Monitor, the first temperature sensor and the second temperature sensor respectively.
Flash tank 20 preferred body Flash Type flash tanks or spray Flash Type flash tank.
Preferably arrange and catch the foam net in the bottom of water-collecting tray 21.
Flat plate collector or the vacuum tube collector of the preferred flat plate collector of solar energy heating vaporizer 12, cover plate.
The preferred plate-type heat exchanger of backheat vaporizer 14, tube and shell heat exchanger or double-pipe exchanger.
The preferred straight tubular heat exchanger of condenser/evaporator 15, coiled interchanger, U-shaped tubular heat exchanger, tube exchanger or spiral tube heat exchanger.
The preferred straight tubular heat exchanger of condenser 5, coiled interchanger, U-shaped tubular heat exchanger, tube exchanger or spiral tube heat exchanger.
The method that the sea water desalinating plant of utilization based on direct expanding solar heating pump carries out sea water desaltination, comprise the steps:
The solar irradiance recorded when Solar Total Irradiance Monitor is greater than 200W/m 2or first envrionment temperature that record of temperature sensor during higher than 5 ℃, primary controller is controlled compressor 4 and is automatically opened, refrigeration agent is subject to thermal evaporation in solar energy heating vaporizer 12, becoming low-pressure gas flows out by the outlet 1 of solar energy heating vaporizer, second threeway 2 of flowing through arrives in gas-liquid separator 3 carries out gas-liquid separation, becoming high temperature and high pressure gas after 4 compressions of the compressed machine of low-pressure gas after separation enters in condenser 5 and discharges latent heat and become highly pressurised liquid after to the seawater in hot water storage tank 17, the highly pressurised liquid reservoir 6 of flowing through, device for drying and filtering 7 and liquid-sighting glass 8, become the saturated air of low-temp low-pressure and the mixture of saturated solution after throttling set 9 throttlings, by the first threeway 10, entrance 11 through the solar energy heating vaporizer is got back to solar energy heating vaporizer 12, complete a circulation,
When the second temperature sensor records seawater temperature in hot water storage tank 17 higher than 60 ℃, primary controller is controlled vacuum pumping pump 31 and is opened, and the gas in flash tank 20 and product water tank 29 is discharged by the second check valve 30 and vacuum pumping pump 31; The interior formation negative pressure of flash tank 20,3-10 minute after vacuum pumping pump 31 is opened, the 4th magnetic valve 22 controlled by primary controller and sea water circulating pump 24 is opened, seawater in hot water storage tank 17 flow into flash tank 20 by pipeline through the 4th magnetic valve 22, and the strong brine after flash distillation is got back to hot water storage tank 17 by pipeline through the first check valve 23, sea water circulating pump 24, the 3rd threeway 25;
Seawater forms water vapor in the interior flash distillation of flash tank 20,1-2 minute after sea water circulating pump 24 is opened, primary controller is controlled the first magnetic valve 13, the second magnetic valve 16, the 3rd magnetic valve 19 and the 5th magnetic valve 26 and is opened, a strong brine part through the 3rd threeway 25 flows back to hot water storage tank 17, another part strong brine enters into backheat vaporizer 14 by pipeline through the 5th magnetic valve 26, strong brine entrance 27, and the strong brine after heat exchange is discharged from the strong brine delivery pipe through strong brine outlet 28; Refrigeration agent after throttling set 9 throttlings is by first threeway 10 parts, first magnetic valve 13 of flowing through, in backheat vaporizer 14 with the strong brine heat exchange, after heat exchange, enter in condenser/evaporator 15, with the water vapor heat exchange, heat exchange is got back to the second threeway 2 by the second magnetic valve 16, the water droplet formed after water vapor condensation enters into product water tank 29 by the road by product water outlet 32 after being collected by water-collecting tray 21, and another part of refrigeration agent flow back into solar energy heating vaporizer 12 by pipeline; Raw material water tank 18 is that hot water storage tank 17 is mended raw material seawater by the 3rd magnetic valve 19 by the road;
Seawater temperature in the second temperature sensor records hot water storage tank 17 is during lower than 60 ℃, primary controller controls the 3rd magnetic valve 19, the 4th magnetic valve 22, the 5th magnetic valve 26 and sea water circulating pump 24 and cuts out, 1-2 minute, primary controller controls the first magnetic valve 13, the second magnetic valve 16 and vacuum pumping pump 31 and cuts out;
When recording the solar irradiance that seawater temperature in hot water storage tank 17 records lower than 60 ℃, Solar Total Irradiance Monitor, the second temperature sensor is less than 200W/m 2the envrionment temperature recorded with the first temperature sensor is during lower than 5 ℃, and primary controller controls compressor 4 and automatically cuts out.
Flash tank 20 preferred body Flash Type flash tanks or spray Flash Type flash tank.
Preferably arrange and catch the foam net in the bottom of water-collecting tray 21.
Flat plate collector or the vacuum tube collector of the preferred flat plate collector of solar energy heating vaporizer 12, cover plate.
The preferred plate-type heat exchanger of backheat vaporizer 14, tube and shell heat exchanger or double-pipe exchanger.
The preferred straight tubular heat exchanger of condenser/evaporator 15, coiled interchanger, U-shaped tubular heat exchanger, tube exchanger or spiral tube heat exchanger.
The preferred straight tubular heat exchanger of condenser 5, coiled interchanger, U-shaped tubular heat exchanger, tube exchanger or spiral tube heat exchanger.
The present invention has following positively effect:
The vaporizer of the present invention using solar energy collector as heat pump takes full advantage of sun power and ambient air heat energy, improves the utilization ratio of renewable energy source; A part using the interchanger in sea water desalinating plant as evaporator with heat pump, the sensible heat of the sensible heat of the condensation latent heat of recovered steam, condensation fresh water and discharge strong brine, improved efficiency of energy utilization to greatest extent.Whole device has that floor space is little, movability is strong, convenient for installation and maintenance, without characteristics such as staff on duty, can meet the demand that the remote regional seawater such as island and brackish water are processed the user, there is good society and economic benefit.
The accompanying drawing explanation
Fig. 1 is a kind of sea water desalinating plant schematic diagram based on direct expanding solar heating pump of the present invention.
In figure: the outlet 1 of solar energy heating vaporizer; The second threeway 2; Gas-liquid separator 3; Compressor 4; Condenser 5; Reservoir 6; Device for drying and filtering 7; Liquid-sighting glass 8; Throttling set 9; The first threeway 10; The entrance 11 of solar energy heating vaporizer; Solar energy heating vaporizer 12; The first magnetic valve 13; Backheat vaporizer 14; Condenser/evaporator 15; The second magnetic valve 16; Hot water storage tank 17; Raw material water tank 18; The 3rd magnetic valve 19; Flash tank 20; Water-collecting tray 21; The 4th magnetic valve 22; The first check valve 23; Sea water circulating pump 24; The 3rd threeway 25; The 5th magnetic valve 26; Strong brine entrance 27; Strong brine outlet 28; Product water tank 29; The second check valve 30; Vacuum pumping pump 31; Product water outlet 32.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.Of the present invention is in order to enable those skilled in the art to understand better the present invention for example, but the present invention is not imposed any restrictions.
See Fig. 1.
A kind of sea water desalinating plant based on direct expanding solar heating pump, comprise direct expanding solar heating pump system, raw material water tank 18, hot water storage tank 17, flash tank 20 and PLC primary controller;
Described direct expanding solar heating pump system comprises solar energy heating vaporizer 12, and the outlet 1 of solar energy heating vaporizer is connected with the entrance 11 of the second threeway 2, gas-liquid separator 3, compressor 4, condenser 5, reservoir 6, device for drying and filtering 7, liquid-sighting glass 8, throttling set 9, the first threeway 10, solar energy heating vaporizer successively by pipeline; Solar Total Irradiance Monitor and the first temperature sensor are arranged near surface or (within 1 meter, the solar energy heating vaporizer) of solar energy heating vaporizer 12; The first threeway 10 is connected with the second threeway 2 with the first magnetic valve 13, backheat vaporizer 14, condenser/evaporator 15, the second magnetic valve 16 successively by pipeline; Condenser 5 is arranged at the inside (condenser 5 also can adopt the seawater cycle heat exchange in external mode and hot water storage tank 17) of hot water storage tank 17; Be provided with refrigeration agent in described direct expanding solar heating pump system, refrigeration agent can select mineral compound, as water, ammonia, carbonic acid gas; The halogenide of stable hydrocarbon, as R12, R22, R134a; Hydrocarbon compound, as propane, Trimethylmethane; Azeotrope refrigerant, as R502; Non-azeotropic refrigerant, as R407C etc.;
The outlet of raw material water tank 18 is connected with the entrance on hot water storage tank 17 tops with the 3rd magnetic valve 19 successively by pipeline;
The top of hot water storage tank 17 is connected with the 4th magnetic valve 22, flash tank 20 successively by pipeline; Be provided with the second temperature sensor in hot water storage tank 17 inside;
Flash tank 20 bottoms are connected with the first check valve 23, sea water circulating pump 24, the 3rd threeway 25 and hot water storage tank 17 bottoms successively by pipeline; The 3rd threeway 25 is connected with the strong brine entrance 27 of the 5th magnetic valve 26, backheat vaporizer 14 successively by pipeline, and the strong brine outlet 28 of backheat vaporizer 14 is connected with the strong brine delivery pipe; Condenser/evaporator 15 is arranged on the top of flash tank 20 inside, is provided with water-collecting tray 21 below condenser/evaporator 15; Described flash tank 20 tops are provided with product water outlet 32, and product water outlet 32 is connected with water-collecting tray 21, and product water outlet 32 is connected with the water-in on product water tank 29 tops by pipeline, and the bottom of product water tank 29 is provided with the product water feed water inlet; The top of product water tank 29 is connected with the second check valve 30, vacuum pumping pump 31 successively by pipeline;
Described PLC primary controller is electrically connected to the first magnetic valve 13, the second magnetic valve 16, the 3rd magnetic valve 19, the 4th magnetic valve 22, the 5th magnetic valve 26, sea water circulating pump 24, vacuum pumping pump 31, compressor 4, Solar Total Irradiance Monitor, the first temperature sensor and the second temperature sensor respectively.
Flash tank 20 preferred body Flash Type flash tanks or spray Flash Type flash tank.
Preferably arrange and catch the foam net in the bottom of water-collecting tray 21.
Flat plate collector or the vacuum tube collector of the preferred flat plate collector of solar energy heating vaporizer 12, cover plate.
The preferred plate-type heat exchanger of backheat vaporizer 14, tube and shell heat exchanger or double-pipe exchanger.
The preferred straight tubular heat exchanger of condenser/evaporator 15, coiled interchanger, U-shaped tubular heat exchanger, tube exchanger or spiral tube heat exchanger.
The preferred straight tubular heat exchanger of condenser 5, coiled interchanger, U-shaped tubular heat exchanger, tube exchanger or spiral tube heat exchanger.
The components and parts that the present invention adopts can be chosen as required from the market, and the PLC primary controller can be purchased, as siemens S7-200CPU224XP.
Device of the present invention, when the flash distillation mode of flash tank 20 is that spray-type flash distillation, solar energy heating vaporizer 12 are tube exchanger for tube and shell heat exchanger, condenser/evaporator 15 for spiral tube heat exchanger, condenser 5 for flat plate collector, backheat vaporizer 14, when refrigeration agent is R134a, in solar irradiance, be 700W/m 2, under the condition that ambient air temp is 25 ℃, the fresh water yield of this device is about 60kg/m 2the fresh water yield of d(and existing general traditional passive type solar energy distiller is at 4-8kg/m 2the d left and right).
The sea water desalinating plant of utilization based on direct expanding solar heating pump carries out the method for seawater (or brackish water) desalination, comprises the steps:
The solar irradiance recorded when Solar Total Irradiance Monitor is greater than 200W/m 2or first envrionment temperature that record of temperature sensor during higher than 5 ℃, the PLC primary controller is controlled compressor 4 and is automatically opened, the refrigeration agent of low-temp low-pressure is at the interior absorption solar radiant energy of solar energy heating vaporizer 12 and ambient air heat energy and evaporate, becoming low-pressure gas flows out by the outlet 1 of solar energy heating vaporizer, second threeway 2 of flowing through arrives in gas-liquid separator 3 carries out gas-liquid separation, becoming high temperature and high pressure gas after 4 compressions of the compressed machine of low-pressure gas after separation enters in condenser 5 and discharges latent heat and become highly pressurised liquid after to the seawater (or brackish water) in hot water storage tank 17, the highly pressurised liquid reservoir 6 of flowing through, device for drying and filtering 7 and liquid-sighting glass 8, become the saturated air of low-temp low-pressure and the mixture of saturated solution after throttling set 9 throttlings, by the first threeway 10, entrance 11 through the solar energy heating vaporizer is got back to solar energy heating vaporizer 12, complete a circulation,
When the second temperature sensor records seawater temperature in hot water storage tank 17 higher than 60 ℃, the PLC primary controller is controlled vacuum pumping pump 31 and is opened, and the gas in flash tank 20 and product water tank 29 is discharged by the second check valve 30 and vacuum pumping pump 31; The interior formation negative pressure of flash tank 20, after opening, vacuum pumping pump 31 (also can be set as 5 minutes according to size and the flash tank size of vacuum pumping pump in 3 minutes, or 10 minutes), the 4th magnetic valve 22 controlled by the PLC primary controller and sea water circulating pump 24 is opened, seawater in hot water storage tank 17 flow into flash tank 20 by pipeline through the 4th magnetic valve 22, and the strong brine after flash distillation is got back to hot water storage tank 17 by pipeline through the first check valve 23, sea water circulating pump 24, the 3rd threeway 25;
Seawater forms water vapor in the interior flash distillation of flash tank 20, after sea water circulating pump 24 is opened 1 minute (also can be set as 2 minutes according to seawater temperature and flash tank size), the PLC primary controller is controlled the first magnetic valve 13, the second magnetic valve 16, the 3rd magnetic valve 19 and the 5th magnetic valve 26 and is opened, a strong brine part through the 3rd threeway 25 flows back to hot water storage tank 17, another part strong brine enters into backheat vaporizer 14 by pipeline through the 5th magnetic valve 26, strong brine entrance 27, and the strong brine after heat exchange is discharged from the strong brine delivery pipe through strong brine outlet 28; Refrigeration agent after throttling set 9 throttlings is by first threeway 10 parts, first magnetic valve 13 of flowing through, in backheat vaporizer 14 with strong brine heat exchange the sensible heat of strong brine (absorb), after heat exchange, enter in condenser/evaporator 15, with water vapor heat exchange (absorbing latent heat and the water of condensation sensible heat of water vapor), heat exchange is got back to the second threeway 2 by the second magnetic valve 16, the water droplet formed after water vapor condensation enters into product water tank 29 by the road by product water outlet 32 after being collected by water-collecting tray 21, and another part of refrigeration agent flow back into solar energy heating vaporizer 12 by pipeline; Raw material water tank 18 is that hot water storage tank 17 is mended raw material seawater by the 3rd magnetic valve 19 by the road;
Seawater temperature in the second temperature sensor records hot water storage tank 17 is during lower than 60 ℃, the PLC primary controller controls the 3rd magnetic valve 19, the 4th magnetic valve 22, the 5th magnetic valve 26 and sea water circulating pump 24 and cuts out, and 1 minute (also can be set as 2 minutes according to seawater temperature and flash tank size) rear PLC primary controller controls the first magnetic valve 13, the second magnetic valve 16 and vacuum pumping pump 31 and cuts out;
When recording the solar irradiance that seawater temperature in hot water storage tank 17 records lower than 60 ℃, Solar Total Irradiance Monitor, the second temperature sensor is less than 200W/m 2the envrionment temperature recorded with the first temperature sensor is during lower than 5 ℃, and the PLC primary controller controls compressor 4 and automatically cuts out.
The parcel such as pipeline, hot water storage tank and flash tank thermal insulation material, prevent the loss of heat.
The above; be only preferably embodiment of the present invention, but protection scope of the present invention is not limited to this, in the technical scope that any those of ordinary skill in the art disclose in the present invention; the variation that can expect easily or replacement, within all should being encompassed in the protection domain of this aspect.

Claims (10)

1. the sea water desalinating plant based on direct expanding solar heating pump, comprise direct expanding solar heating pump system, raw material water tank (18), hot water storage tank (17), flash tank (20) and primary controller;
Described direct expanding solar heating pump system comprises solar energy heating vaporizer (12), and the outlet of solar energy heating vaporizer (1) is connected with the entrance (11) of the second threeway (2), gas-liquid separator (3), compressor (4), condenser (5), reservoir (6), device for drying and filtering (7), liquid-sighting glass (8), throttling set (9), the first threeway (10), solar energy heating vaporizer successively by pipeline; Solar Total Irradiance Monitor and the first temperature sensor be arranged on solar energy heating vaporizer (12) the surface or near; The first threeway (10) is connected with the first magnetic valve (13), backheat vaporizer (14), condenser/evaporator (15), the second magnetic valve (16) and the second threeway (2) successively by pipeline; Condenser (5) is arranged at the inside of hot water storage tank (17); Be provided with refrigeration agent in described direct expanding solar heating pump system;
The outlet of raw material water tank (18) is connected with the entrance on hot water storage tank (17) top with the 3rd magnetic valve (19) successively by pipeline;
The top of hot water storage tank (17) is connected with the 4th magnetic valve (22), flash tank (20) successively by pipeline; Be provided with the second temperature sensor in hot water storage tank (17) inside;
Flash tank (20) bottom is connected with the first check valve (23), sea water circulating pump (24), the 3rd threeway (25) and hot water storage tank (17) bottom successively by pipeline; The 3rd threeway (25) is connected with the strong brine entrance (27) of the 5th magnetic valve (26), backheat vaporizer (14) successively by pipeline, and the strong brine outlet (28) of backheat vaporizer (14) is connected with the strong brine delivery pipe; Condenser/evaporator (15) is arranged on the inner top of flash tank (20), in condenser/evaporator (15) below, is provided with water-collecting tray (21); Described flash tank (20) top is provided with product water outlet (32), product water outlet (32) is connected with water-collecting tray (21), product water outlet (32) is connected with the water-in on product water tank (29) top by pipeline, and the bottom of product water tank (29) is provided with the product water feed water inlet; The top of product water tank (29) is connected with the second check valve (30), vacuum pumping pump (31) successively by pipeline;
Described primary controller is electrically connected to the first magnetic valve (13), the second magnetic valve (16), the 3rd magnetic valve (19), the 4th magnetic valve (22), the 5th magnetic valve (26), sea water circulating pump (24), vacuum pumping pump (31), compressor (4), Solar Total Irradiance Monitor, the first temperature sensor and the second temperature sensor respectively.
2. device according to claim 1 is characterized in that: described flash tank (20) is spray Flash Type flash tank.
3. device according to claim 1 is characterized in that: the bottom of described water-collecting tray (21) arranges catches the foam net.
4. device according to claim 1, it is characterized in that: described solar energy heating vaporizer (12) is flat plate collector or vacuum tube collector.
5. device according to claim 1, it is characterized in that: described backheat vaporizer (14) is plate-type heat exchanger, tube and shell heat exchanger or double-pipe exchanger; Described condenser/evaporator (15) is straight tubular heat exchanger, coiled interchanger, U-shaped tubular heat exchanger, tube exchanger or spiral tube heat exchanger; Described condenser (5) is straight tubular heat exchanger, coiled interchanger, U-shaped tubular heat exchanger, tube exchanger or spiral tube heat exchanger.
6. a method of utilizing the described device of claim 1 to carry out sea water desaltination, comprise the steps:
The solar irradiance recorded when Solar Total Irradiance Monitor is greater than 200W/m 2or first envrionment temperature that record of temperature sensor during higher than 5 ℃, primary controller is controlled compressor (4) and is automatically opened, refrigeration agent is subject to thermal evaporation in solar energy heating vaporizer (12), becoming low-pressure gas flows out by the outlet (1) of solar energy heating vaporizer, the second threeway (2) of flowing through arrives in gas-liquid separator (3) carries out gas-liquid separation, become after the compressed machine of low-pressure gas after separation (4) compression after high temperature and high pressure gas enters the middle release of condenser (5) the latent heat seawater interior to hot water storage tank (17) and become highly pressurised liquid, the highly pressurised liquid reservoir (6) of flowing through, device for drying and filtering (7) and liquid-sighting glass (8), become the saturated air of low-temp low-pressure and the mixture of saturated solution after throttling set (9) throttling, by the first threeway (10), entrance (11) through the solar energy heating vaporizer is got back to solar energy heating vaporizer (12), complete a circulation,
When the second temperature sensor records seawater temperature in hot water storage tank (17) higher than 60 ℃, primary controller is controlled vacuum pumping pump (31) and is opened, and the gas in flash tank (20) and product water tank (29) is discharged by the second check valve (30) and vacuum pumping pump (31); Form negative pressure in flash tank (20), 3-10 minute after vacuum pumping pump (31) is opened, the 4th magnetic valve (22) controlled by primary controller and sea water circulating pump (24) is opened, seawater in hot water storage tank (17) flow into flash tank (20) by pipeline through the 4th magnetic valve (22), and the strong brine after flash distillation is got back to hot water storage tank (17) by pipeline through the first check valve (23), sea water circulating pump (24), the 3rd threeway (25);
Seawater flash distillation in flash tank (20) forms water vapor, 1-2 minute after sea water circulating pump (24) is opened, primary controller is controlled the first magnetic valve (13), the second magnetic valve (16), the 3rd magnetic valve (19) and the 5th magnetic valve (26) and is opened, a strong brine part through the 3rd threeway (25) flows back to hot water storage tank (17), another part strong brine enters into backheat vaporizer (14) by pipeline through the 5th magnetic valve (26), strong brine entrance (27), and the strong brine after heat exchange is discharged from the strong brine delivery pipe through strong brine outlet (28); Refrigeration agent after throttling set (9) throttling is by the first threeway (10) part the first magnetic valve (13) of flowing through, in backheat vaporizer (14) with the strong brine heat exchange, after heat exchange, enter in condenser/evaporator (15), with the water vapor heat exchange, heat exchange is got back to the second threeway (2) by the second magnetic valve (16), the water droplet formed after water vapor condensation enters into product water tank (29) by the road by product water outlet (32) after being collected by water-collecting tray (21), and another part of refrigeration agent flow back into solar energy heating vaporizer (12) by pipeline; Raw material water tank (18) is that hot water storage tank (17) is mended raw material seawater by the 3rd magnetic valve (19) by the road;
Seawater temperature in the second temperature sensor records hot water storage tank (17) is during lower than 60 ℃, primary controller controls the 3rd magnetic valve (19), the 4th magnetic valve (22), the 5th magnetic valve (26) and sea water circulating pump (24) and cuts out rear 1-2 minute, and primary controller controls the first magnetic valve (13), the second magnetic valve (16) and vacuum pumping pump (31) and cuts out;
When recording the solar irradiance that seawater temperature in hot water storage tank (17) records lower than 60 ℃, Solar Total Irradiance Monitor, the second temperature sensor is less than 200W/m 2the envrionment temperature recorded with the first temperature sensor is during lower than 5 ℃, and primary controller controls compressor (4) and automatically cuts out.
7. method according to claim 6 is characterized in that: described flash tank (20) is spray Flash Type flash tank.
8. method according to claim 6 is characterized in that: the bottom of described water-collecting tray (21) arranges catches the foam net.
9. method according to claim 6, it is characterized in that: described solar energy heating vaporizer (12) is flat plate collector or vacuum tube collector.
10. method according to claim 6, it is characterized in that: described backheat vaporizer (14) is plate-type heat exchanger, tube and shell heat exchanger or double-pipe exchanger; Described condenser/evaporator (15) is straight tubular heat exchanger, coiled interchanger, U-shaped tubular heat exchanger, tube exchanger or spiral tube heat exchanger; Described condenser (5) is straight tubular heat exchanger, coiled interchanger, U-shaped tubular heat exchanger, tube exchanger or spiral tube heat exchanger.
CN201310078923.4A 2013-03-12 2013-03-12 Direct-expansion solar heat pump-based seawater desalination device and seawater desalination method therefor Expired - Fee Related CN103159275B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310078923.4A CN103159275B (en) 2013-03-12 2013-03-12 Direct-expansion solar heat pump-based seawater desalination device and seawater desalination method therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310078923.4A CN103159275B (en) 2013-03-12 2013-03-12 Direct-expansion solar heat pump-based seawater desalination device and seawater desalination method therefor

Publications (2)

Publication Number Publication Date
CN103159275A CN103159275A (en) 2013-06-19
CN103159275B true CN103159275B (en) 2014-01-01

Family

ID=48582855

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310078923.4A Expired - Fee Related CN103159275B (en) 2013-03-12 2013-03-12 Direct-expansion solar heat pump-based seawater desalination device and seawater desalination method therefor

Country Status (1)

Country Link
CN (1) CN103159275B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104724777B (en) * 2015-03-11 2016-08-17 北京航空航天大学 Air-conditioning-pure water integrated apparatus processed that solar energy/electric heating pump drives
CN109000385B (en) * 2018-07-04 2020-06-09 江苏科技大学 Multi-source high-temperature heat pump device and working method
CN109179842B (en) * 2018-10-30 2023-11-21 南京工程学院 Slaughterhouse process water regeneration system based on solar energy and air source heat pump
CN109354096B (en) * 2018-12-13 2021-08-03 福建工程学院 Fresnel lens solar carburetor method seawater desalination device
CN113217894A (en) * 2021-06-09 2021-08-06 中联西北工程设计研究院有限公司 System and method for recovering waste heat of steam high-temperature condensate water
CN113816450B (en) * 2021-09-06 2023-05-23 浙江万里学院 Sea water desalting device and desalting method
CN115382585B (en) * 2022-08-30 2023-10-24 合肥通用机械研究院有限公司 Low-temperature vacuum composite experimental device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002073099A1 (en) * 2001-03-12 2002-09-19 Mikio Kinoshita Solar thermal system with solar pond and method of maintaining solar pond
CN1194901C (en) * 2003-05-16 2005-03-30 上海交通大学 Double stage absorptive compressing type high temperature heat pump sea water desalination device
CN1323032C (en) * 2005-04-11 2007-06-27 国家海洋局天津海水淡化与综合利用研究所 Apparatus of combined solar energy heat pump for desaltination of sea water

Also Published As

Publication number Publication date
CN103159275A (en) 2013-06-19

Similar Documents

Publication Publication Date Title
CN103159275B (en) Direct-expansion solar heat pump-based seawater desalination device and seawater desalination method therefor
CN103172132B (en) Seawater desalting device and method of off-grid type photovoltaic photo-thermal coupled heat pump
CN104374025B (en) A kind of three-phase energy-storage method of solar airconditioning
KR101109536B1 (en) Evaporative Desalination Apparatus of Sea Water Using Phase Changing Fluids
CN1323032C (en) Apparatus of combined solar energy heat pump for desaltination of sea water
CN102765768B (en) Device for improving sea water desalinization efficiency through heat pump
CN102205993B (en) Adverse current closed type multistage seawater desalination system and method
CN101973598A (en) Spray evaporating air-moistening de-humidity type solar sea water desalinating device
CN205170431U (en) Solar energy absorption heat pump sea water desalination device
CN102190340A (en) Multistage double effect distillation seawater desalination technology with heating seawater by solar energy
CN102328965B (en) Solar seawater desalination plant and operation method thereof
CN204873910U (en) Solar seawater desalination device based on extinction boiling
CN102225238A (en) Evaporation concentration system combining vapor compressor and high-temperature heat pump
CN103058306A (en) Solar air-conditioning seawater desalting system
CN101775824A (en) Air dehumidifier, solar energy water heater, refrigerator, battery set and steam box
CN103232086A (en) Solar seawater desalting system
CN202046907U (en) Wind and photovoltaic generation air source heat pump seawater desalinization device
CN103011320A (en) Small high-temperature multistage regenerative type vacuum glass tube solar seawater desalting device
KR20160060283A (en) Photovoltaics system to able seawater desalination
CN103550941B (en) Low-temperature evaporation and concentration device and high-concentration waste water concentration method
CN203095658U (en) Air humidifying and solution moisture absorbing solar freshwater preparation device
CN102491440B (en) Solar energy jet-refrigeration seawater desalting plant
CN203159268U (en) solar air conditioning seawater desalination system
CN105329962A (en) Solar compound heat pump sea water desalination and domestic water supply system and method
CN202766323U (en) Sea water refrigeration and desalination unit

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140101

Termination date: 20190312