CN108253643B - Instant-heating heat-storage heat pump and solar energy coupling hot water system and control method - Google Patents

Instant-heating heat-storage heat pump and solar energy coupling hot water system and control method Download PDF

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Publication number
CN108253643B
CN108253643B CN201810044839.3A CN201810044839A CN108253643B CN 108253643 B CN108253643 B CN 108253643B CN 201810044839 A CN201810044839 A CN 201810044839A CN 108253643 B CN108253643 B CN 108253643B
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water
way valve
water tank
heating type
solar
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CN108253643A (en
Inventor
邱金友
戴贵龙
侯根富
郭永辉
李兴友
方永林
陈晓明
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Fujian University of Technology
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Fujian University of Technology
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H4/00Fluid heaters characterised by the use of heat pumps
    • F24H4/02Water heaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/0005Details for water heaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/20Arrangement or mounting of control or safety devices
    • F24H9/2007Arrangement or mounting of control or safety devices for water heaters
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers

Abstract

The invention discloses an instant heat storage heat pump and solar energy coupling hot water system, which comprises a solar heat collector, an instant heating type double-pipe heat exchanger and a coil pipe static heating type water tank, wherein the solar heat collector, the instant heating type double-pipe heat exchanger and the coil pipe static heating type water tank are connected in parallel in a water circulation loop, the instant heating type double-pipe heat exchanger and the coil pipe static heating type water tank are also connected in parallel in a refrigerant circulation loop, and an air cooling evaporator, a compressor and a throttling mechanism are also arranged in the refrigerant circulation loop. The invention can supply hot water under three operation modes, namely, an instant heating type hot water supply of a sleeve condenser, a hot water supply of a coil static heating water tank and a solar hot water supply; the coil pipe static heating water tank and the solar water tank are complementary water tanks, solar hot water and the coil pipe static heating water tank can be complementary through internal circulation, and the heat and water storage capacity of the system is improved.

Description

Instant-heating heat-storage heat pump and solar energy coupling hot water system and control method
Technical Field
The invention relates to the field of heat pumps, in particular to an instant heat and heat storage heat pump and solar energy coupling hot water system and a control method.
Background
At present, a solar water heating system is widely applied to civil buildings, energy is saved and the environment is protected in the application process, but the influence of meteorological conditions is large in the operation process, and the supply stability of hot water is greatly influenced. The air source heat pump hot water system is an energy-saving domestic hot water supply scheme by consuming partial electric energy and absorbing heat from the air side in the nature to heat domestic hot water, but the system still consumes the electric energy all the time and cannot fully apply clean energy.
Disclosure of Invention
The invention aims to design an instant heat and heat storage heat pump and solar energy coupling hot water system.
In order to achieve the purpose, the technical scheme of the invention is as follows: an instant-heating heat-storage heat pump and solar energy coupling hot water system comprises a solar heat collector, an instant-heating type double-pipe heat exchanger and a coil pipe static heating type water tank, wherein the solar heat collector, the instant-heating type double-pipe heat exchanger and the coil pipe static heating type water tank are connected in a water circulation loop in parallel; a tap water inlet, a tap water outlet and a circulating water pump are arranged in the water circulation loop, the on-off of water flow in the instant heating type double-pipe heat exchanger is controlled by a first two-way valve, the on-off of water flow in the coil static heating type water tank is controlled by a second two-way valve, and the on-off of water flow in the solar heat collector is controlled by a third two-way valve; the fourth two-way valve and the fifth two-way valve control the on-off and short circuit of the circulating water pump;
the instant heating type double-pipe heat exchanger and the coil static heating type water tank are further connected in parallel in a refrigerant circulating loop, an air cooling evaporator, a compressor and a throttling mechanism are further arranged in the refrigerant circulating loop, a sixth two-way valve controls the on-off of a refrigerant in the instant heating type double-pipe heat exchanger, and a seventh two-way valve controls the on-off of the refrigerant in the coil static heating type water tank;
the coil pipe static heating water tank and the solar water tank are complementary water tanks, when solar energy is sufficient, solar hot water can be stored in the coil pipe static heating water tank through the internal circulation, and when the solar energy is insufficient, hot water in the coil pipe static heating water tank can be stored in the solar water tank through the internal circulation, so that the heat storage water capacity of the system is improved.
The control method of the instant heat and heat storage heat pump and solar energy coupling hot water system comprises the following specific steps:
the operation mode is as follows: when the water temperature sensor detects that the water temperature of the solar water tank meets the use requirement, the third two-way valve and the fourth two-way valve are opened, the first two-way valve, the second two-way valve and the fifth two-way valve are closed, and the solar water tank is directly adopted for supplying water;
the second operation mode is as follows: when the water temperature sensor detects that the water temperature of the solar water tank does not meet the use requirement, the second two-way valve is opened, the first two-way valve, the third two-way valve, the fourth two-way valve and the fifth two-way valve are closed, and a coil pipe static heating type water tank is adopted for supplying water;
the third operation mode is as follows: when the partition plate rises to the upper layer, the first two-way valve is opened, the second two-way valve, the third two-way valve, the fourth two-way valve and the fifth two-way valve are closed, the instant heating type double-pipe heat exchanger starts to supply water, and meanwhile, the sixth two-way valve is opened, and a refrigerant is introduced into the instant heating type double-pipe heat exchanger;
the operation mode is four: under the condition of supplying water by the instant heating type double-pipe heat exchanger, after the water supply is stopped, if the water temperature in the solar water tank meets the temperature requirement, a circulating water pump is started to supplement hot water in the solar water tank to the coil pipe static heating type water tank; and if the water temperature in the solar water tank does not meet the temperature requirement, starting the coil pipe static heating type water tank, starting the seventh two-way valve, closing the sixth two-way valve, heating the normal-temperature water in the coil pipe static heating type water tank, starting the second two-way valve, the third two-way valve and the fifth two-way valve when the water temperature reaches a set value, closing the fourth two-way valve, starting the circulating water pump, and supplementing hot water in the coil pipe static heating type water tank to the solar water tank until the water temperature in the solar water tank meets the temperature requirement.
The invention has the beneficial effects that:
1. the invention can supply hot water under three operation modes, namely, an instant heating type hot water supply of a sleeve condenser, a hot water supply of a coil static heating water tank and a solar hot water supply;
2. the coil pipe static heating water tank and the solar water tank are complementary water tanks, when solar energy is sufficient, solar hot water can be stored in the coil pipe static heating water tank through internal circulation, and when the solar energy is insufficient, hot water in the coil pipe static heating water tank can be stored in the solar water tank through the internal circulation, so that the heat storage water capacity of the system is improved.
3. The solar energy is preferentially used for supplying hot water, the coil static heating water tank is started to supply hot water when the solar energy is insufficient, and the instant heating type heat pump unit is directly started to supply hot water when the static heating coil water tank is at a low water level, so that the optimal energy-saving operation scheme of the system is ensured.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic diagram of a coil static heating water tank.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, an instant heat and storage heat pump and solar energy coupled hot water system comprises a solar heat collector 8, an instant heating type double-pipe heat exchanger 2 and a coil static heating type water tank 3, wherein the solar heat collector 8, the instant heating type double-pipe heat exchanger 2 and the coil static heating type water tank 8 are connected in parallel in a water circulation loop a, the solar heat collector 8 comprises a solar water tank 9, a water temperature sensor (not shown in the figure) is arranged in the solar water tank 9, the coil static heating type water tank 3 is a water temperature layered water tank, the coil static heating type water tank is divided into an upper layer and a lower layer by a middle partition plate, the upper layer is high-temperature water, the lower layer is normal-temperature water, and the; the water circulation loop A is internally provided with a tap water inlet 1, a tap water outlet 10 and a circulating water pump 7, the on-off of water flow in the instant heating type double-pipe heat exchanger 2 is controlled through a first two-way valve S1, the on-off of water flow in the coil static heating type water tank 3 is controlled through a second two-way valve S2, and the on-off of water flow in the solar thermal collector 8 is controlled through a third two-way valve S3; the fourth two-way valve S4 and the fifth two-way valve S5 control the on-off and short circuit of the circulating water pump 7.
The instant heating type double-pipe heat exchanger 2 and the coil static heating type water tank 3 are further connected in parallel in a refrigerant circulating loop B, an air-cooled evaporator 5, a compressor 6 and a throttling mechanism 4 are further arranged in the refrigerant circulating loop B, a sixth two-way valve a1 controls the on-off of the refrigerant in the instant heating type double-pipe heat exchanger 2, and a seventh two-way valve a2 controls the on-off of the refrigerant in the coil static heating type water tank 3.
The control method of the instant heat and heat storage heat pump and solar energy coupling hot water system comprises the following specific steps:
the operation mode is as follows: when the water temperature sensor detects that the water temperature of the solar water tank 9 meets the use requirement, the third two-way valve S3 and the fourth two-way valve S4 are opened, the first two-way valve S1, the second two-way valve S2 and the fifth two-way valve S5 are closed, and the solar water tank 9 is directly adopted for supplying water;
the second operation mode is as follows: when the water temperature sensor detects that the water temperature of the solar water tank 9 does not meet the use requirement, the second two-way valve S2 is opened, the first two-way valve S1, the third two-way valve S3 and the fourth two-way valve S4 are closed, and the fifth two-way valve S5 is closed, and the coil static heating type water tank 3 is adopted for supplying water;
the third operation mode is as follows: when the partition plate 302 rises to the upper layer B, the first two-way valve S1 is opened, the second two-way valve S2, the third two-way valve S3, the fourth two-way valve S4, and the fifth two-way valve S5 are closed, the instant heating type double pipe heat exchanger 2 starts to supply water, and the sixth two-way valve a1 is opened at the same time, and the instant heating type double pipe heat exchanger 2 is introduced with refrigerant.
The operation mode is four: under the condition of supplying water by the instant heating type double-pipe heat exchanger 2, after the water supply is stopped, if the water temperature in the solar water tank 9 meets the temperature requirement, the circulating water pump 7 is started to supplement the hot water in the solar water tank 9 to the coil pipe static heating type water tank 3; if the water temperature in the solar water tank 9 does not meet the temperature requirement, the coil pipe static heating type water tank 9 is started, the seventh two-way valve a2 is started, the sixth two-way valve a1 is closed, the normal-temperature water in the coil pipe static heating type water tank 3 is heated, when the water temperature reaches a set value, the second two-way valve S2, the third two-way valve S3 and the fifth two-way valve S5 are started, the fourth two-way valve S4 is closed, the circulating water pump 7 is started, the hot water in the coil pipe static heating type water tank 3 is supplemented to the solar water tank 9 until the water temperature in the solar water tank 9 meets the temperature requirement, and the heat and water storage.
The described embodiments are only some embodiments of the invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Claims (2)

1. An instant-heating heat-storage heat pump and solar energy coupling hot water system is characterized by comprising a solar heat collector, an instant-heating type double-pipe heat exchanger and a coil pipe static heating type water tank, wherein the solar heat collector, the instant-heating type double-pipe heat exchanger and the coil pipe static heating type water tank are connected in parallel in a water circulation loop; a tap water inlet, a tap water outlet and a circulating water pump are arranged in the water circulation loop, the on-off of water flow in the instant heating type double-pipe heat exchanger is controlled by a first two-way valve, the on-off of water flow in the coil static heating type water tank is controlled by a second two-way valve, and the on-off of water flow in the solar heat collector is controlled by a third two-way valve; the fourth two-way valve and the fifth two-way valve control the on-off and short circuit of the circulating water pump;
the instant heating type double-pipe heat exchanger and the coil static heating type water tank are further connected in parallel in a refrigerant circulating loop, an air cooling evaporator, a compressor and a throttling mechanism are further arranged in the refrigerant circulating loop, a sixth two-way valve controls the on-off of a refrigerant in the instant heating type double-pipe heat exchanger, and a seventh two-way valve controls the on-off of the refrigerant in the coil static heating type water tank;
the coil pipe static heating water tank and the solar water tank are complementary water tanks, when solar energy is sufficient, solar hot water can be stored in the coil pipe static heating water tank through the internal circulation, and when the solar energy is insufficient, hot water in the coil pipe static heating water tank can be stored in the solar water tank through the internal circulation, so that the heat storage water capacity of the system is improved.
2. The control method of the instant heat and thermal storage heat pump and solar coupled hot water system according to claim 1, characterized by comprising the following steps:
the operation mode is as follows: when the water temperature sensor detects that the water temperature of the solar water tank meets the use requirement, the third two-way valve and the fourth two-way valve are opened, the first two-way valve, the second two-way valve and the fifth two-way valve are closed, and the solar water tank is directly adopted for supplying water;
the second operation mode is as follows: when the water temperature sensor detects that the water temperature of the solar water tank does not meet the use requirement, the second two-way valve is opened, the first two-way valve, the third two-way valve, the fourth two-way valve and the fifth two-way valve are closed, and a coil pipe static heating type water tank is adopted for supplying water;
the third operation mode is as follows: when the partition plate rises to the upper layer, the first two-way valve is opened, the second two-way valve, the third two-way valve, the fourth two-way valve and the fifth two-way valve are closed, the instant heating type double-pipe heat exchanger starts to supply water, and meanwhile, the sixth two-way valve is opened, and a refrigerant is introduced into the instant heating type double-pipe heat exchanger;
the operation mode is four: under the condition of supplying water by the instant heating type double-pipe heat exchanger, after the water supply is stopped, if the water temperature in the solar water tank meets the temperature requirement, a circulating water pump is started to supplement hot water in the solar water tank to the coil pipe static heating type water tank; and if the water temperature in the solar water tank does not meet the temperature requirement, starting the coil pipe static heating type water tank, starting the seventh two-way valve, closing the sixth two-way valve, heating the normal-temperature water in the coil pipe static heating type water tank, starting the second two-way valve, the third two-way valve and the fifth two-way valve when the water temperature reaches a set value, closing the fourth two-way valve, starting the circulating water pump, and supplementing hot water in the coil pipe static heating type water tank to the solar water tank until the water temperature in the solar water tank meets the temperature requirement.
CN201810044839.3A 2018-01-17 2018-01-17 Instant-heating heat-storage heat pump and solar energy coupling hot water system and control method Active CN108253643B (en)

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CN201810044839.3A CN108253643B (en) 2018-01-17 2018-01-17 Instant-heating heat-storage heat pump and solar energy coupling hot water system and control method

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Application Number Priority Date Filing Date Title
CN201810044839.3A CN108253643B (en) 2018-01-17 2018-01-17 Instant-heating heat-storage heat pump and solar energy coupling hot water system and control method

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CN108253643B true CN108253643B (en) 2020-03-17

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CN111884240B (en) * 2020-08-20 2022-03-18 上海明华电力科技有限公司 Distributed energy station optimized operation method with high-capacity water energy storage device

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CN100516668C (en) * 2008-01-10 2009-07-22 上海交通大学 Straight-expansion type solar energy heat pump based solar energy architecture integrated energy-saving hot-water system
CN101974415B (en) * 2010-09-02 2013-04-17 同济大学 Solar energy-ground source heat pump coupled biogas pool heating system and operational control method
CN105066220A (en) * 2015-07-29 2015-11-18 中国市政工程华北设计研究总院有限公司 Solar energy and gas heating hot water furnace complementary heating system
CN106051885B (en) * 2016-06-20 2018-11-27 华中科技大学 One kind recycling the controllable energy supplying system of multiple-energy-source based on water
CN206300247U (en) * 2016-12-14 2017-07-04 江西欧龙实业有限公司 A kind of only of villa uses integrated heating water system
CN206514380U (en) * 2017-01-10 2017-09-22 昆明理工大学 One kind utilizes solar energy, air energy, soil source heat pump coupling heating system
CN107388621B (en) * 2017-08-15 2019-11-29 东北电力大学 Heat-storage solar energy couples air injection enthalpy-increasing type air source heat pump system and its control method
CN207894047U (en) * 2018-01-17 2018-09-21 福建工程学院 One kind is that thermal regenerator heat pump couples hot-water heating system with solar energy

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