Super heat pump type air energy boiler and operation method

Abstract

To extract energy from air for steam production for industrial and heating purposes, this invention proposes a super heat pump air energy boiler and operating method, significantly reducing operating energy consumption compared to existing technologies such as electrode boilers. This unit utilizes an innovative process to achieve a wide temperature differential between low-temperature air and high-temperature steam, exceeding 120°C. This significantly reduces steam production energy costs compared to existing technologies. Furthermore, it utilizes innovative operating control methods to automatically adjust internal operating conditions at varying air temperatures to achieve optimal performance across all operating conditions, ultimately achieving significant technical and economic benefits.

Description

Technical Field

[0001] The invention belongs to the technical field of energy utilization, and in particular relates to a super heat pump boiler for extracting heat from air to produce steam. Background Art

[0002] Steam is a huge demand in industrial production and heating, and is often produced using coal-, gas-, or oil-fired boilers. This results in high steam production costs, smoke emissions, and other pollutants. Its energy conversion efficiency is only 60-85%. Even with electrode boilers, which eliminate pollutant emissions, its energy efficiency is significantly lower than 95%. Therefore, even with various new boilers, energy conversion efficiency remains below 100%, resulting in high steam production costs.

[0003] As an energy-saving and environmentally friendly technology, electric heat pump technology is increasingly being used in the field of energy utilization. However, existing reports on electric heat pump technology indicate that electric heat pumps can only produce hot water below 65°C due to limitations such as the physical properties of Freon refrigerant, the operating pressure range of the compressor, lubricant failure, and cycle thermodynamic efficiency. This cannot meet the heating requirements of over 100°C required for steam production in industrial production and heating.

[0004] In this context, the invention proposes a super heat pump air energy boiler and its operating method. The equipment uses electric drive to extract energy from the air to directly produce steam. Compared with the existing electric heat pump technology, it greatly improves the heating temperature, and the energy utilization efficiency is far higher than 100%. Compared with the current method of producing steam with electrode boilers, it greatly reduces the operating energy consumption and has significant technical and economic advantages. Summary of the Invention

[0005] In order to extract energy from the air and directly produce high-temperature and high-pressure steam, thereby significantly reducing the cost of steam production required in the industrial and heating fields, this invention proposes a super heat pump air energy boiler and its operation method. Compared with the existing electrode boiler method of producing steam, it significantly reduces operating energy consumption and thus has significant technical and economic advantages.

[0006] The present invention proposes a super heat pump type air energy boiler and an operation method thereof. The equipment comprises a steam generator (1), a heat exchanger A (2), a heat exchanger B (3), a heat exchanger C (4), an air energy extractor (5), a booster A (6), a booster B (7), a booster C (8), an energy regulator A (9), an energy regulator B (10), an energy regulator C (11), an energy regulator D (12), a heat exchanger D (13), a circulating pump A (14), a circulating pump B (15), an air outlet (16), an air inlet (17), a steam outlet (18) and a cold water inlet (19), wherein the steam generator (1) is connected to the cold water inlet (19), the steam outlet (18), the heat exchanger D (13) and The heat exchanger A (2) is connected to the steam generator (1), the energy regulator A (9), the booster A (6) and the circulation pump B (15). The heat exchanger B (3) is connected to the heat exchanger D (13), the circulation pump A (14), the heat exchanger C (4), the booster B (7) and the energy regulator C (11). The heat exchanger C (4) is connected to the heat exchanger B (3), the circulation pump B (15), the booster B (7), the booster A (6) and the booster C (8). The air energy extractor (5) is connected to the air inlet (17), the air outlet (16), the booster C (8), the energy regulator B (10) and the energy regulator D (12). The heat exchanger D (13) is connected to the steam generator (1), the circulation pump A(14) is connected to heat exchanger B(3), booster A(6) is connected to heat exchanger A(2), booster B(7), heat exchanger C(4), energy regulator A(9) and energy regulator B(10), booster B(7) is connected to heat exchanger B(3), booster A(6), heat exchanger C(4), energy regulator C(11) and energy regulator D(12), booster C(8) is connected to heat exchanger C(4) and air energy extractor (5), circulation pump A(14) is connected to heat exchanger D(13) and heat exchanger B(3), circulation pump B(15) is connected to heat exchanger A(2) and heat exchanger C(4), energy regulator A(9) is connected to heat exchanger A(2), booster A(6) and energy regulator B( 10), the energy regulator B (10) is connected to the energy regulator A (9), the booster A (6), the air energy extractor (5) and the energy regulator D (12), the energy regulator C (11) is connected to the heat exchanger B (3), the booster B (7) and the energy regulator D (12), the energy regulator D (12) is connected to the booster B (7), the energy regulator C (11), the energy regulator B (10) and the air energy extractor (5), cold water enters the steam generator (1) from the cold water inlet (19) and flows out through the steam outlet (18), air enters the air energy extractor (5) from the air inlet (17) and leaves through the air outlet (16), the working fluids circulating inside the equipment include working fluid A, working fluid B and working fluid C,Working fluid A and working fluid B are sequentially passed through heat exchanger B (3), circulation pump A (14), heat exchanger D (13) and steam generator (1) for reciprocating circulation. Working fluid B is sequentially passed through heat exchanger B (3), heat exchanger C (4), circulation pump B (15), heat exchanger A (2) and steam generator (1). Circulating working fluid C is sequentially passed through air energy extractor (5), booster C (8) and heat exchanger C (4) and then divided into two paths. The first path is sequentially passed through booster B (7), heat exchanger B (3), energy regulator C (11) and energy regulator D (12) and then returns to air energy extractor (5) for circulation, wherein part of the circulating working fluid C enters booster B (7) to continue the pressure-boosting circulation. The second path is sequentially passed through booster A (6), heat exchanger A (2), energy regulator A (9) and energy regulator B (10) and then returns to air energy extractor (5) for circulation, wherein part of the circulating working fluid C enters booster A (6) to continue the pressure-boosting circulation. ,

[0007] The super heat pump air energy boiler is characterized in that the working fluid A, the working fluid B and the working fluid C are organic or inorganic substances respectively, and the operating principle is as follows: the mixture of the working fluid A and the working fluid B is heated by the steam of the working fluid C in the heat exchanger B (3), part of the working fluid B leaves the mixture and enters the heat exchanger C (4) in the form of vapor, the working fluid B is condensed in the heat exchanger C (4) and enters the heat exchanger A (2) through the circulation pump B (15), the liquid working fluid B is heated by the steam of the working fluid C in the heat exchanger A (2) and then turns into vapor and enters the heat exchanger A (2). The working medium C is fed into the steam generator, and the working medium B enters the mixture of the working medium A and the working medium B to release heat to heat the cold water into steam; the working medium C circulates in the air energy extractor (5), the heat exchanger C (4), the heat exchanger B (3) and the heat exchanger A (2); the booster A (6), the booster B (7) and the booster C (8) are used to increase the temperature and pressure of the working medium C; the working medium C changes from gas to liquid in the heat exchanger A (2) and the heat exchanger B (3); the working medium C changes from liquid to liquid in the air energy extractor (5) and the heat exchanger C (4). The energy regulator A (9), energy regulator B (10), energy regulator C (11) and energy regulator D (12) are used to adjust the proportion of the working medium C entering the booster A (6) and the booster B (7) according to the load. The method for adjusting the proportion of the working medium C is as follows: under the design working condition, according to the current air temperature and steam temperature, the energy regulator A (9), energy regulator B (10), energy regulator C (11) and energy regulator D (12) maintain their respective fluid resistance characteristic coefficients so that the system operates stably. When the outdoor air temperature drops, the fluid resistance characteristic coefficients of the energy regulator B (10) and energy regulator D (12) are increased, and the fluid resistance characteristic coefficients of the energy regulator A (9) and energy regulator C (11) are reduced; when the outdoor air temperature rises, the fluid resistance characteristic coefficients of the energy regulator B (10) and energy regulator D (12) are reduced, and the fluid resistance characteristic coefficients of the energy regulator A (9) and energy regulator C (11) are increased.

[0008] The super heat pump air energy boiler, wherein the booster A (6), the booster B (7) and the booster C (8) adopt piston type, vortex type, screw type, magnetic suspension or centrifugal boosting mode.

[0009] The super heat pump air energy boiler, wherein the steam generator (1), the heat exchanger A (2), the heat exchanger B (3) and the heat exchanger C (4) adopt a shell and tube or plate heat exchange method.

[0010] In the super heat pump air energy boiler, the energy regulator A (9), the energy regulator B (10), the energy regulator C (11) and the energy regulator D (12) are all composed of booster pumps or valves. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a system diagram of a super heat pump air energy boiler.

[0012] Reference numerals:

[0013] 1-Steam generator, 2-Heat exchanger A, 3-Heat exchanger B, 4-Heat exchanger C, 5-Air energy heat exchanger, 6-Booster A, 7-Booster B, 8-Booster C, 9-Energy regulator A, 10-Energy regulator B, 11-Energy regulator C, 12-Energy regulator D, 13-Heat exchanger D, 14-Circulating pump A, 15-Circulating pump B, 16-Air outlet, 17-Air inlet, 18-Steam outlet, 19-Cold water inlet DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solutions and advantages of the implementation of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of the present invention, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present invention, and should not be understood as limiting the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0015] The embodiment comprises a steam generator (1), a heat exchanger A (2), a heat exchanger B (3), a heat exchanger C (4), an air energy extractor (5), a booster A (6), a booster B (7), a booster C (8), an energy regulator A (9), an energy regulator B (10), an energy regulator C (11), an energy regulator D (12), a heat exchanger D (13), a circulation pump A (14), a circulation pump B (15), an air outlet (16), an air inlet (17), a steam outlet (18) and a cold water inlet (19), wherein the steam generator (1) is connected to the cold water inlet (19), the steam outlet (18), the heat exchanger D (13) and the heat exchanger A (2), and the heat exchanger A (2) is connected to the steam generator (1), the energy regulator B (10), the energy regulator C (11), the energy regulator D (12), the heat exchanger D (13), the circulation pump A (14), the circulation pump B (15), an air outlet (16), an air inlet (17), a steam outlet (18) and a cold water inlet (19). Regulator A (9), booster A (6) and circulation pump B (15) are connected, heat exchanger B (3) is connected to heat exchanger D (13), circulation pump A (14), heat exchanger C (4), booster B (7) and energy regulator C (11), heat exchanger C (4) is connected to heat exchanger B (3), circulation pump B (15), booster B (7), booster A (6) and booster C (8), air energy extractor (5) is connected to air inlet (17), air outlet (16), booster C (8), energy regulator B (10) and energy regulator D (12), heat exchanger D (13) is connected to steam generator (1), circulation pump A (14) and heat exchanger B (3), booster A (6) is connected to heat exchanger A (2), booster The booster B(7) is connected to the heat exchanger B(3), the booster A(6), the heat exchanger C(4), the energy regulator A(9) and the energy regulator B(10); the booster B(7) is connected to the heat exchanger B(3), the booster A(6), the heat exchanger C(4), the energy regulator C(11) and the energy regulator D(12); the booster C(8) is connected to the heat exchanger C(4) and the air energy extractor (5); the circulation pump A(14) is connected to the heat exchanger D(13) and the heat exchanger B(3); the circulation pump B(15) is connected to the heat exchanger A(2) and the heat exchanger C(4); the energy regulator A(9) is connected to the heat exchanger A(2), the booster A(6) and the energy regulator B(10); the energy regulator B(10) is connected to the energy regulator A(9), the booster A(6), the air energy extractor (5); The extractor (5) is connected to the energy regulator D (12), the energy regulator C (11) is connected to the heat exchanger B (3), the booster B (7) and the energy regulator D (12), the energy regulator D (12) is connected to the booster B (7), the energy regulator C (11), the energy regulator B (10) and the air energy extractor (5), cold water enters the steam generator (1) from the cold water inlet (19) and flows out through the steam outlet (18), air enters the air energy extractor (5) from the air inlet (17) and leaves through the air outlet (16), the working medium A in the internal circulation working medium of the device is CH3C(OH)(CH2CF3)CH2CF3, the working medium B is CH3(OCH2CH2O)4CH3 and the working medium C is CO2,CH3C(OH)(CH2CF3)CH2CF3 and CH3(OCH2CH2O)4CH3 are circulated back and forth through heat exchanger B(3), circulation pump A(14), heat exchanger D(13) and steam generator (1) in sequence. CH3(OCH2CH2O)4CH3 is circulated through heat exchanger B(3), heat exchanger C(4), circulation pump B(15), heat exchanger A(2) and steam generator (1) in sequence. CO2 is divided into two paths after passing through air energy extractor (5), booster C(8) and heat exchanger C(4). The first path is circulated through booster B(7), heat exchanger B(3), energy regulator C (11), energy regulator D (12) and then return to the air energy extractor (5) for circulation, wherein part of CO2 enters the booster B (7); the second path passes through the booster A (6), heat exchanger A (2), energy regulator A (9), energy regulator B (10) in sequence and then returns to the air energy extractor (5) for circulation, wherein part of CO2 enters the booster A (6) for further pressure increase. Booster A (6) and booster B (7) are centrifugal type, and booster C (8) is a magnetic levitation pressure increase type. In this embodiment, the steam generator (1), heat exchanger A (2), heat exchanger B (3) and heat exchanger C (4) are all plate type heat exchange types.

[0016] In this embodiment, the air inlet temperature is -10°C, the air outlet temperature is -15°C, the cold water inlet temperature is 15°C, and the steam outlet temperature is 130°C. The mixture of CH3C(OH)(CH2CF3)CH2CF3 and CH3(OCH2CH2O)4CH3 is heated by CO2 steam in heat exchanger B(3). Part of CH3(OCH2CH2O)4CH3 leaves the mixture and enters heat exchanger C(4) in vapor form. After condensation in heat exchanger C(4), CH3(OCH2CH2O)4CH3 enters heat exchanger A(2) through circulation pump B(15). Liquid CH3(OCH2CH2O)4CH3 is heated in heat exchanger B(3). After being heated by CO2 steam in heat exchanger A (2), it changes into vapor state and enters the steam generator. CH3(OCH2CH2O)4CH3 enters the mixture of CH3C(OH)(CH2CF3)CH2CF3 and CH3(OCH2CH2O)4CH3 and releases heat to heat the cold water into steam. CO2 circulates in the air energy extractor (5), heat exchanger C (4), heat exchanger B (3) and heat exchanger A (2). Booster A (6), booster B (7) and booster C (8) are used to increase the temperature and pressure of CO2. CO2 changes from vapor state to liquid state in heat exchanger A (2) and heat exchanger B (3). CO2 changes from vapor state to liquid state in air energy extractor (5) and heat exchanger C (4). The state of the CO2 in the booster C(4) changes from liquid to vapor. The energy regulators A(9), B(10), C(11) and D(12) are used to adjust the proportion of CO2 entering the booster A(6) and the booster B(7) according to the load. The method of adjusting the CO2 proportion is as follows: the energy regulators A(9), B(10), C(11) and D(12) are all electric valves. According to the current air temperature and steam temperature, the energy regulators A(9), B(10), C(11) and D(12) maintain their respective fluid resistance characteristic coefficients to make the system stable. In the fixed operation, when the outdoor air temperature is lower than -10℃, the electric valve opening of energy regulator B (10) and energy regulator D (12) is adjusted to increase the fluid resistance characteristic coefficient, and the electric valve opening of energy regulator A (9) and energy regulator C (11) is adjusted to reduce the fluid resistance characteristic coefficient. At this time, the proportion of CO2 entering the compressor increases; when the outdoor air temperature is higher than -10℃, the electric valve opening of energy regulator B (10) and energy regulator D (12) is adjusted to reduce the fluid resistance characteristic coefficient, and the electric valve opening of energy regulator A (9) and energy regulator C (11) is adjusted to increase the fluid resistance characteristic coefficient. At this time, the proportion of CO2 entering the compressor decreases.

[0017] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the above embodiments, or that some of the technical features may be replaced with equivalents; such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A super heat pump air energy boiler, characterized by: The boiler comprises a steam generator (1), a heat exchanger A (2), a heat exchanger B (3), a heat exchanger C (4), an air energy extractor (5), a booster A (6), a booster B (7), a booster C (8), an energy regulator A (9), an energy regulator B (10), an energy regulator C (11), an energy regulator D (12), a heat exchanger D (13), a circulating pump A (14), a circulating pump B (15), an air outlet (16), an air inlet (17), a steam outlet (18) and a cold water inlet (19), wherein the steam generator (1) is connected to the cold water inlet (19), the steam outlet (18), the heat exchanger D (13) and the heat exchanger A (2), and the heat exchanger A (2) is connected to the steam generator (1), the energy regulator The heat exchanger A (9), the booster A (6) and the circulation pump B (15) are connected, the heat exchanger B (3) is connected to the heat exchanger D (13), the circulation pump A (14), the heat exchanger C (4), the booster B (7) and the energy regulator C (11), the heat exchanger C (4) is connected to the heat exchanger B (3), the circulation pump B (15), the booster B (7), the booster A (6) and the booster C (8), the air energy extractor (5) is connected to the air inlet (17), the air outlet (16), the booster C (8), the energy regulator B (10) and the energy regulator D (12), the heat exchanger D (13) is connected to the steam generator (1), the circulation pump A (14) and the heat exchanger B (3), the booster A (6) is connected to the heat exchanger A (2), the booster B ( 7), heat exchanger C (4), energy regulator A (9) and energy regulator B (10), booster B (7) is connected to heat exchanger B (3), booster A (6), heat exchanger C (4), energy regulator C (11) and energy regulator D (12), booster C (8) is connected to heat exchanger C (4) and air energy extractor (5), circulation pump A (14) is connected to heat exchanger D (13) and heat exchanger B (3), circulation pump B (15) is connected to heat exchanger A (2) and heat exchanger C (4), energy regulator A (9) is connected to heat exchanger A (2), booster A (6) and energy regulator B (10), energy regulator B (10) is connected to energy regulator A (9), booster A (6), air energy extractor (5 ) and energy regulator D (12), energy regulator C (11) is connected to heat exchanger B (3), booster B (7) and energy regulator D (12), energy regulator D (12) is connected to booster B (7), energy regulator C (11), energy regulator B (10) and air energy extractor (5), cold water enters the steam generator (1) from the cold water inlet (19) and flows out through the steam outlet (18), air enters the air energy extractor (5) from the air inlet (17) and leaves through the air outlet (16), the working fluids circulating inside the boiler include working fluid A, working fluid B and working fluid C, working fluid A and working fluid B pass through heat exchanger B (3), circulating pump A (14), heat exchanger D (13) and steam generator (1) in turn, and circulate back and forth.The working fluid B passes through the heat exchanger B (3), heat exchanger C (4), circulation pump B (15), heat exchanger A (2) and steam generator (1) in sequence. The circulating working fluid C passes through the air energy extractor (5), booster C (8) and heat exchanger C (4) in sequence and is divided into two paths. The first path passes through the booster B (7), heat exchanger B (3), energy regulator C (11) and energy regulator D (12) in sequence and then returns to the air energy extractor (5) for circulation. Part of the circulating working fluid C enters the booster B (7) to continue the pressure-boosting circulation. The second path passes through the booster A (6), heat exchanger A (2), energy regulator A (9) and energy regulator B (10) in sequence and then returns to the air energy extractor (5) for circulation. , wherein part of the circulating working fluid C enters the booster A (6) to continue the boosting cycle. Its operating principle is as follows: the mixture of working fluid A and working fluid B is heated by the steam of working fluid C in the heat exchanger B (3), and part of working fluid B leaves the mixture and enters the heat exchanger C (4) in the form of vapor. The working fluid B is condensed in the heat exchanger C (4) and enters the heat exchanger A (2) through the circulation pump B (15). The liquid working fluid B is heated by the steam of working fluid C in the heat exchanger A (2) and then turns into vapor and enters the steam generator. The working fluid B enters the mixture of working fluid A and working fluid B and releases heat to heat the cold water to steam; the working fluid C circulates in the air energy extractor (5), heat exchanger C (4), heat exchanger B (3) and heat exchanger A (2), and the booster A (6), booster B (7) and booster C (8) are used to increase the temperature and pressure of the working medium C. The working medium C changes from gas to liquid in the heat exchanger A (2) and the heat exchanger B (3). The working medium C changes from liquid to gas in the air energy extractor (5) and the heat exchanger C (4). The energy regulator A (9), energy regulator B (10), energy regulator C (11) and energy regulator D (12) are used to adjust the proportion of the working medium C entering the booster A (6) and the booster B (7) according to the load. The method for adjusting the proportion of the working medium C is as follows: under the design working condition, according to the current air temperature and steam temperature, the energy regulator A (9), energy regulator B (10), energy regulator C (11) and energy regulator D (12) are used to adjust the proportion of the working medium C entering the booster A (6) and the booster B (7). The energy regulator D (12) maintains its own fluid resistance characteristic coefficient so that the system operates stably. When the outdoor air temperature drops, the fluid resistance characteristic coefficient of the energy regulator B (10) and the energy regulator D (12) is increased, and the fluid resistance characteristic coefficient of the energy regulator A (9) and the energy regulator C (11) is reduced. When the outdoor air temperature rises, the fluid resistance characteristic coefficient of the energy regulator B (10) and the energy regulator D (12) is reduced, and the fluid resistance characteristic coefficient of the energy regulator A (9) and the energy regulator C (11) is increased. The energy regulator A (9), the energy regulator B (10), the energy regulator C (11) and the energy regulator D (12) are all composed of booster pumps or valves.

2. A super heat pump air energy boiler according to claim 1, characterized in that: Booster A (6), booster B (7) and booster C (8) adopt piston type, vortex type, screw type, magnetic suspension or centrifugal boosting mode.

3. The super heat pump air energy boiler according to claim 1, characterized in that: The steam generator (1), heat exchanger A (2), heat exchanger B (3) and heat exchanger C (4) adopt shell and tube or plate heat exchange mode.

4. The super heat pump air energy boiler according to claim 1, characterized in that: Working fluid A, working fluid B and working fluid C are respectively organic or inorganic.

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