CN201628303U - Heat multiplication-type heat exchange unit for heat exchange station - Google Patents
Heat multiplication-type heat exchange unit for heat exchange station Download PDFInfo
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- CN201628303U CN201628303U CN 201029166006 CN201029166006U CN201628303U CN 201628303 U CN201628303 U CN 201628303U CN 201029166006 CN201029166006 CN 201029166006 CN 201029166006 U CN201029166006 U CN 201029166006U CN 201628303 U CN201628303 U CN 201628303U
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/12—Hot water central heating systems using heat pumps
Abstract
A heat multiplication-type heat exchange unit belongs to the heat supply heating field and is technically characterized in that based on that the primary side heating medium of the central heating is converted into the secondary side hot water by a heat exchanger, the primary side heating medium is firstly connected with an absorption heat pump unit and used as a power source, the absorption heat pump unit absorbs heat from a environmental heat source, so as to realize the purpose of multiplying the heat of the secondary side. The utility model can directly utilize the hot water or steam of the primary side as the heating medium, drive the absorption heat pump unit to absorb heat from the external air or water source environment to realize the multiplied heat exchange of the secondary side heat, also can utilize the outlet heating medium of the absorption heat pump unit to further heat the secondary side hot water from the absorption heat pump unit according to changes of working conditions. On the premise of ensuring the use function of the secondary side, the primary network heat output and the heating medium flow rate of the unit area are reduced, the pipe size of the heat supply network is further reduced, the primary energy consumption and transmission consumption are reduced, and the remarkable energy saving effect is realized.
Description
Technical field
The utility model belongs to the heat supply heating field, be applicable to have steam, the heat exchange station of central heating net, boiler room or other heating systems in elevated temperature heat source such as hot water.
Background technology
Along with the raising of China's resident living level, people also constantly increase the demand of domestic hot-water and heating hot water.Statistics shows that the ratio of China building energy consumption account society total energy consumption wherein has 40% to be used for building and heating approximately between 22% ~ 25%.Area, cities and towns, the north adopts the energy consumption of heat supply network central heating or sub-district central heating to account for 60% of building heating energy consumption, and the many newly-built communities in the Yangtze river basin also begin to adopt central heating at present, and a lot of cities are also at the extensive central heating net of planning.
Because central heating can not be used in every building and set up boiler separately, and many advantages are arranged, therefore this mode will be in China's long-term existence.And present central heating is normally directly burnt low-temperature water heating (60 ~ 90 ℃) with boiler and is directly supplied with user heating, or utilize heating plant shown in Figure 1 will concentrate in the heat supply network 130 ℃ hot water (primary side hot water) to convert low-temperature water heating (secondary side hot water) to resupply user heating, though the heat total amount before and after the heat exchange does not change, the utilisable energy loss is very big.
The heating efficiency for preparing the secondary side heating hot water with boiler or concentrated heat supply network is always less than 1.0, and changes with the variation of secondary side hot water temperature and ambient temperature hardly.But according to the second law of thermodynamics as can be known, the hot water that utilizes the boiler combustion fossil fuel or once net, the secondary side hot water of preparation different temperatures should be able to obtain the heat exchange efficiency higher than direct heat transfer under different ambient temperatures.Therefore, exploitation heat multiplication type hot site heat exchanger unit is the important channel of realizing that heat supply network central heating and sub-district centralized heating and energy conservation reduce discharging, and has important social benefit and huge economic benefit.
The utility model content
Based on above-mentioned background, the utility model proposes a kind of heat multiplication type hot site heat exchanger unit, be applicable to the concentrated heat supply network with high temperature heat source or the heat exchange station of sub-district central heating system, the hot water or the steam that utilize boiler directly to burn, perhaps with 130 ℃ of hot water of central heating net primary side thermal source driving heat source as the absorption type heat pump assembly, from surrounding mediums such as air, water or soil, extract heat by the absorption type heat pump assembly, then can produce than the more secondary side low-temperature water heating of primary side heating load heat, realize the multiplication of heat.If definition secondary side quantity of heat production is the heat multiplication factor with the ratio of primary side heating load, ignoring under the thermal loss condition so, the heat multiplication factor at traditional hot station is constant to be 1.0, and the heat multiplication factor of the heat station heat exchange unit that the utility model provides will surpass the traditional hot station greatly, secondary side hot water demand temperature is low more, the temperature of air, water or soil is high more, and its heat multiplication factor is big more.
Concrete technical scheme of the present utility model is as follows:
A kind of heat multiplication type hot site heat exchanger unit, comprise heat exchanger, primary side heating agent inlet tube, primary side heating agent outlet, secondary side hot water inlet pipe and secondary side hot water outlet pipe, it is characterized in that: described heat multiplication type hot site heat exchanger unit also comprises the absorption type heat pump assembly, and described absorption type heat pump assembly comprises generator, absorber, condenser and evaporimeter; Described primary side heating agent inlet tube links to each other with the inlet tube of described generator, and the export pipeline of generator is divided into two-way, and one the tunnel is connected through first valve and heat exchanger primary side inlet, and another road second valve is connected with heat exchanger primary side heating agent outlet; The secondary side hot water inlet pipe is connected with the inlet tube of absorber, and the outlet of absorber is divided into two-way through behind the condenser, and one the tunnel links to each other with heat exchanger secondary side inlet through the 3rd valve, and another Lu Jingdi four valves are connected with the secondary side hot water outlet pipe.
Described first valve and second valve are flow control valve; Described first valve and second valve adopt a triple valve of regulating flow to replace; Described absorption type heat pump assembly is single-effective absorption source pump or multiple-effect absorption type heat pump assembly, or both combinations; Described absorption type heat pump assembly is absorption net for air-source heat pump units or absorption water source heat pump units, or both combinations; The primary side heating agent that enters the absorption type heat pump assembly is hot water or steam.
Adopt technique scheme to have following remarkable advantage:
1. the heat multiplication type hot site heat exchanger unit drives the absorption type heat pump assembly from the surrounding environment heat-obtaining by heating agent, compares the heat that doubled with existing conventional heat station heat exchange unit.The heat exchange unit is designated as Q from the heat that the primary side heating agent obtains
In, the heat that secondary side hot water is taken away from the heat exchange unit is Q
Out, definition heat multiplication factor=Q
Out/ Q
In, fractional energy savings=(heat multiplication factor-1) * 100%.Only when the absorber by the absorption type heat pump assembly and condenser, its heat multiplication factor is the heating performance coefficient COP of absorption type heat pump assembly for the generator by the absorption type heat pump assembly only when the primary side heating agent, secondary side hot water; When the primary side heating agent passes through heat exchanger primary side heat exchanger channels again by the generator of absorption type heat pump assembly earlier, secondary side hot water passes through the absorber and the condenser of absorption type heat pump assembly earlier, during again by heat exchanger secondary side heat exchanger channels, the heat multiplication factor descends to some extent, but still greater than 1.
With the Beijing area public building is example, and the primary side heating agent is 130 ℃ of hot water, and the absorption type heat pump assembly adopts absorption net for air-source heat pump units, and when producing 65 ℃ secondary side hot water, its average of the whole year heat multiplication factor is 1.25, and fractional energy savings reaches 25%.Under the condition of heat supply temperature that satisfies secondary side hot water and heat, the demand of primary side heating agent will reduce 20%, can reduce the transmission ﹠ distribution energy consumption about 40% of primary side heating agent.If adopt steam as the primary side heating agent, or when adopting plant chimney stalk, waste gas and other low-grade heat sources as the evaporation thermal source of absorption type heat pump assembly, its heat multiplication factor and fractional energy savings will significantly improve.Heat multiplication type heat exchange unit can be used for concentrating heat supply network, heating station boiler room or other heating systems, and northern area and the Xia Redong cryogenic region wide in China all are suitable for, and energy-saving potential is huge.
2. existing conventional heat station heat exchange unit is when producing hot water, heat was constant when the secondary side hot water temperature that produces changed, and the heat multiplication type hot site heat exchanger unit can be regulated according to the variation of environment temperature, when hot water temperature high in environment temperature or that produced was low, heat multiplication factor and fractional energy savings all improved.The temperature of heating hot water has the required hot water temperature of trend, especially floor heating of reduction lower at present, and the power savings advantages of heat multiplication type hot site heat exchanger unit is more obvious.
3. improve the utilization rate of primary energy, reduced the consumption of primary energy, reduced CO
2Deng the discharging of pollutant, and absorption type heat pump assembly employing natural medium, environmentally friendly.
Description of drawings
Fig. 1 is the structural representation of existing conventional heat station heat exchange unit.
Fig. 2 is the structural representation of the heat multiplication type hot site heat exchanger unit of the absorption net for air-source heat pump units of employing that provides of the utility model.
Fig. 3 is the structural representation of the heat multiplication type hot site heat exchanger unit of the absorption water source heat pump units of employing that provides of the utility model.
Fig. 4 is the operation schematic diagram of a kind of heat multiplication type hot site heat exchanger unit full effective type multiplication heat exchange pattern that provides of the utility model.
Fig. 5 is the operation schematic diagram of a kind of heat multiplication type hot site heat exchanger unit adjustable type multiplication heat exchange pattern that provides of the utility model.
Wherein: the 1-heat exchanger; 2-primary side heating agent inlet tube; 3-primary side heating agent outlet; 4-secondary side hot water inlet pipe; 5-secondary side hot water outlet pipe; 6-absorption type heat pump assembly; The 7-generator; 8-first valve; 9-second valve; The 10-absorber; The 11-condenser; 12-the 3rd valve; 13-the 4th valve; The 14-evaporimeter; The absorption net for air-source heat pump units of 15-; The absorption water source heat pump units of 16-; The air-cooled evaporimeter of 17-; 18-water-cooled evaporimeter.
The specific embodiment
Below in conjunction with accompanying drawing the structure of the present utility model and the method for operation are described further.
A kind of heat multiplication type hot site heat exchanger unit that the utility model provides, comprise heat exchanger 1, primary side heating agent inlet tube 2, primary side heating agent outlet 3, secondary side hot water inlet pipe 4 and secondary side hot water outlet pipe 5, it is characterized in that: described heat multiplication type hot site heat exchanger unit also comprises absorption type heat pump assembly 6, and described absorption type heat pump assembly 6 comprises generator 7, absorber 10, condenser 11 and evaporimeter 14; Described primary side heating agent inlet tube 2 links to each other with the inlet tube of described generator 7, the export pipeline of generator 7 is divided into two-way, one the tunnel links to each other through first valve 8 and heat exchanger 1 primary side inlet, and another road second valve 9 is connected with heat exchanger 1 primary side heating agent outlet 3; Secondary side hot water inlet pipe 4 links to each other with the inlet tube of absorber 10, the outlet of absorber 10 is divided into two-way through behind the condenser 11, one the tunnel links to each other through the 3rd valve 12 and heat exchanger 1 secondary side inlet, and another Lu Jingdi four valves 13 are connected with secondary side hot water outlet pipe 5.
A kind of heat multiplication type hot site heat exchanger unit that the utility model provides has full effective type multiplication heat exchange and two kinds of operational modes of adjustable type multiplication heat exchange.
Embodiment one:
As the primary side heating agent, absorption type heat pump assembly 6 adopts absorption net for air-source heat pump units 15 to present embodiment with hot water.As shown in Figure 2, a kind of heat multiplication type hot site heat exchanger unit, comprise heat exchanger 1, primary side heating agent inlet tube 2, primary side heating agent outlet 3, secondary side hot water inlet pipe 4 and secondary side hot water outlet pipe 5, it is characterized in that: described heat multiplication type hot site heat exchanger unit also comprises absorption net for air-source heat pump units 15, and described absorption net for air-source heat pump units 15 comprises generator 7, absorber 10, condenser 11 and air-cooled evaporimeter 17; Described primary side heating agent inlet tube 2 links to each other with the inlet tube of described generator 7, the export pipeline of generator 7 is divided into two-way, one the tunnel links to each other through first valve 8 and heat exchanger 1 primary side inlet, and another road second valve 9 is connected with heat exchanger 1 primary side heating agent outlet 3; Secondary side hot water inlet pipe 4 links to each other with the inlet tube of absorber 10, the outlet of absorber 10 is divided into two-way through behind the condenser 11, one the tunnel links to each other through the 3rd valve 12 and heat exchanger 1 secondary side inlet, and another Lu Jingdi four valves 13 are connected with secondary side hot water outlet pipe 5.
1, full effective type multiplication heat exchange pattern
Fig. 4 is the operation schematic diagram of a kind of heat multiplication type hot site heat exchanger unit full effective type multiplication heat exchange pattern that provides of the utility model.
Produce the temperature of hot water when low when ambient temperature is higher or required, open second valve 9, the 4th valve 13, close first valve 8, the 3rd valve 12, hot water drives absorption net for air-source heat pump units 15 from environment behind the heat-obtaining, get back to primary side heating agent outlet 3, the backwater of user side is supplied with the user and is used through behind absorption net for air-source heat pump units 15 heat temperature raisings.
Under the full effective type multiplication heat exchange pattern, the heat multiplication factor of heat multiplication type hot site heat exchanger unit reaches maximum, is the heating performance coefficient COP of absorption net for air-source heat pump units 15.
2, adjustable type multiplication heat exchange pattern
When the lower or required temperature of producing hot water of environment temperature was higher, the efficient of absorption net for air-source heat pump units 15 was lower, and full effective type multiplication heat exchange pattern can't satisfy the user side demand.
Fig. 5 is the operation schematic diagram of a kind of heat multiplication type hot site heat exchanger unit adjustable type multiplication heat exchange pattern that provides of the utility model.Under adjustable type multiplication heat exchange pattern, first valve 8 and second valve 9 are flow control valve.
Open first valve 8, second valve 9, the 3rd valve 12, close the 4th valve 13, hot water drives absorption net for air-source heat pump units 15 from environment behind the heat-obtaining, a part enters heat exchanger 1 heat exchange by first valve 8, return primary side heating agent outlet 3, another part hot water is directly got back to primary side heating agent outlet 3, and the backwater of user side is earlier through after absorption net for air-source heat pump units 15 heating, heat up once more by heat exchanger 1, supply with the user and use.
Produce the different of hot water temperature according to environment temperature with required, the aperture of regulating first valve 8 and second valve 9, control enters the hot water flow of heat exchanger 1, meets the requirements to guarantee the hot water temperature who produces.Environment temperature is low more or required to produce the hot water temperature high more, and then the aperture of first valve 8 is big more, and the aperture of second valve 9 is more little, and the heat multiplication factor of heat multiplication type hot site heat exchanger unit is just low more.
Embodiment two:
As the primary side heating agent, absorption type heat pump assembly 6 adopts absorption water source heat pump units 16 to present embodiment with hot water.As shown in Figure 3, a kind of heat multiplication type hot site heat exchanger unit, comprise heat exchanger 1, primary side heating agent inlet tube 2, primary side heating agent outlet 3, secondary side hot water inlet pipe 4 and secondary side hot water outlet pipe 5, it is characterized in that: described heat multiplication type hot site heat exchanger unit also comprises absorption water source heat pump units 16, and described absorption water source heat pump units 16 comprises generator 7, absorber 10, condenser 11 and water-cooled evaporimeter 18; Described primary side heating agent inlet tube 2 links to each other with the inlet tube of described generator 7, the export pipeline of generator 7 is divided into two-way, one the tunnel links to each other through first valve 8 and heat exchanger 1 primary side inlet, and another road second valve 9 is connected with heat exchanger 1 primary side heating agent outlet 3; Secondary side hot water inlet pipe 4 links to each other with the inlet tube of absorber 10, the outlet of absorber 10 is divided into two-way through behind the condenser 11, one the tunnel links to each other through the 3rd valve 12 and heat exchanger 1 secondary side inlet, and another Lu Jingdi four valves 13 are connected with secondary side hot water outlet pipe 5.
The heat multiplication type hot site heat exchanger unit still can be realized embodiment one described heat multiplication function, has full effective type multiplication heat exchange pattern and adjustable type multiplication heat exchange pattern simultaneously.Because the temperature stabilization and the temperature at underground water source, soil source and the used heat water source of supply water-cooled evaporimeter 18 are higher, so can obtain higher heat multiplication factor in the winter time, energy-saving effect is more obvious.
In addition; utilize absorption net for air-source heat pump units 15 of steam drive or absorption water source heat pump units 16; first valve 8, second valve 9 adopt flow control valve; first valve 8 and second valve 9 merge the triple valve that adopts the adjusting flow; absorption type heat pump assembly 6 adopts technical schemes such as single-action or multiple-effect absorption type heat pump assembly; its line arrangement is all identical with above embodiment with working method, so also belong to the protection domain of this patent, does not repeat them here.
Claims (6)
1. heat multiplication type hot site heat exchanger unit, comprise heat exchanger (1), primary side heating agent inlet tube (2), primary side heating agent outlet (3), secondary side hot water inlet pipe (4) and secondary side hot water outlet pipe (5), it is characterized in that: described heat multiplication type hot site heat exchanger unit also comprises absorption type heat pump assembly (6), and described absorption type heat pump assembly (6) comprises generator (7), absorber (10), condenser (11) and evaporimeter (14); Described primary side heating agent inlet tube (2) links to each other with the inlet tube of described generator (7), the export pipeline of generator (7) is divided into two-way, one the tunnel links to each other through first valve (8) and heat exchanger (1) primary side inlet, and another road second valve (9) is connected with heat exchanger (1) primary side heating agent outlet (3); Secondary side hot water inlet pipe (4) links to each other with the inlet tube of absorber (10), be divided into two-way behind the outlet process condenser (11) of absorber (10), one the tunnel links to each other through the 3rd valve (12) and heat exchanger (1) secondary side inlet, and another Lu Jingdi four valves (13) are connected with secondary side hot water outlet pipe (5).
2. a kind of heat multiplication type hot site heat exchanger unit according to claim 1 is characterized in that: described first valve (8) and second valve (9) are flow control valve.
3. a kind of heat multiplication type hot site heat exchanger unit according to claim 1 is characterized in that: described first valve (8) adopts a triple valve of regulating flow to replace with second valve (9).
4. a kind of heat multiplication type hot site heat exchanger unit according to claim 1 is characterized in that: described absorption type heat pump assembly (6) is single-effective absorption source pump or multiple-effect absorption type heat pump assembly, or both combinations.
5. a kind of heat multiplication type hot site heat exchanger unit according to claim 1 is characterized in that: described absorption type heat pump assembly (6) is absorption net for air-source heat pump units (15) or absorption water source heat pump units (16), or both combinations.
6. a kind of heat multiplication type hot site heat exchanger unit according to claim 1 is characterized in that: the primary side heating agent that enters absorption type heat pump assembly (6) is hot water or steam.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201029166006 CN201628303U (en) | 2010-02-03 | 2010-02-03 | Heat multiplication-type heat exchange unit for heat exchange station |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201029166006 CN201628303U (en) | 2010-02-03 | 2010-02-03 | Heat multiplication-type heat exchange unit for heat exchange station |
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| CN201628303U true CN201628303U (en) | 2010-11-10 |
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| CN 201029166006 Expired - Lifetime CN201628303U (en) | 2010-02-03 | 2010-02-03 | Heat multiplication-type heat exchange unit for heat exchange station |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102102884A (en) * | 2011-03-18 | 2011-06-22 | 清华大学 | Seasonal heat-storage heat supply system and operation method |
| CN104764070A (en) * | 2015-04-24 | 2015-07-08 | 珠海格力电器股份有限公司 | Heat exchange unit and heat supply system |
| CN105222385A (en) * | 2015-10-20 | 2016-01-06 | 西安交通大学 | A kind of Trans-critical cycle CO 2combined heat-pump system |
-
2010
- 2010-02-03 CN CN 201029166006 patent/CN201628303U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102102884A (en) * | 2011-03-18 | 2011-06-22 | 清华大学 | Seasonal heat-storage heat supply system and operation method |
| CN104764070A (en) * | 2015-04-24 | 2015-07-08 | 珠海格力电器股份有限公司 | Heat exchange unit and heat supply system |
| CN105222385A (en) * | 2015-10-20 | 2016-01-06 | 西安交通大学 | A kind of Trans-critical cycle CO 2combined heat-pump system |
| CN105222385B (en) * | 2015-10-20 | 2018-01-19 | 西安交通大学 | A kind of Trans-critical cycle CO2Combined heat-pump system |
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| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101110 |