CN211233437U - Single-effect heating and double-effect refrigerating steam type lithium bromide absorption heat pump unit - Google Patents
Single-effect heating and double-effect refrigerating steam type lithium bromide absorption heat pump unit Download PDFInfo
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- CN211233437U CN211233437U CN201920915521.8U CN201920915521U CN211233437U CN 211233437 U CN211233437 U CN 211233437U CN 201920915521 U CN201920915521 U CN 201920915521U CN 211233437 U CN211233437 U CN 211233437U
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
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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]
- Y02B30/62—Absorption based systems
Abstract
The utility model relates to a single-effect heating double-effect refrigerating steam type lithium bromide absorption heat pump unit, which belongs to the technical field of refrigerating equipment. The unit comprises a steam generator I, a condenser I, a steam generator II, a low-pressure generator, a condenser II, an evaporator, an absorber, a heat exchanger I, a heat exchanger II, a solution pump I, a solution pump II, a refrigerant pump, a stop valve A, a stop valve B, a refrigerant steam communicating pipe and a low-pressure generator refrigerant water pipe. The utility model discloses a steam type lithium bromide absorption heat pump unit of single-effect heating double-effect refrigeration, through the valve switching, when the working condition of heating is run in winter, the unit is run according to two single-effect heat pump principles that are connected in parallel; when the refrigerating working condition is operated in summer, the unit operates according to the steam double-effect type solution parallel refrigerating principle. Because of double-effect refrigeration, the refrigeration coefficient of performance is greatly improved, the steam consumption is saved, the machine has two functions, the initial investment of equipment is reduced, and the occupied space of the equipment is saved.
Description
Technical Field
The utility model relates to a single-effect heating double-effect refrigerating steam type lithium bromide absorption heat pump unit, which belongs to the technical field of refrigerating equipment.
Background
In the areas which need heat sources and have low-temperature waste heat in production process and life, the first-class lithium bromide absorption heat pump unit is adopted to extract the heat of the low-temperature waste heat and prepare the medium-temperature heat source which is higher than the low-temperature heat source by more than 40 ℃, so that a large amount (more than 40 percent) of medium-pressure steam consumption can be saved, the comprehensive utilization of energy sources is realized, better economic and social benefits are obtained, and a large amount of applications are obtained in recent years. In some occasions, heat supply is needed in winter, refrigeration is needed in summer, in order to realize two purposes of one machine and save initial investment, a steam type first-class lithium bromide absorption heat pump unit with a refrigeration function appears in two years (as shown in figure 1), the heating coefficient of the unit is about 1.7, and the refrigeration coefficient of the single-effect unit is only about 0.75. The coefficient of refrigeration performance of the steam double-effect lithium bromide absorption water chilling unit is about 1.45, obviously, the steam consumption of the single-effect unit is much higher than that of the double-effect unit, how to realize double-effect refrigeration on the single-effect heat pump improves the coefficient of refrigeration performance, saves steam, has simple operation, and becomes one of the important subjects of current research.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving above-mentioned background problem, provide a single-effect heats double-effect refrigerated steam type lithium bromide absorption heat pump unit, its single-effect heat pump recovery waste heat supply in winter, operation double-effect refrigeration in summer improve refrigeration coefficient of performance, the energy can be saved, reduce a tractor serves dual-purpose, compact structure, easy operation of initial investment.
The utility model discloses the purpose realizes like this: a single-effect heating and double-effect refrigerating steam type lithium bromide absorption heat pump unit comprises a steam generator I, a condenser I, a steam generator II, a condenser II, an evaporator, an absorber, a heat exchanger I, a heat exchanger II, a solution pump I, a solution pump II and a refrigerant pump;
the generator condenser shell of the unit comprises a cavity A and a cavity B;
the steam generator I and the condenser I are both arranged in the cavity A;
the steam generator II and the condenser II are arranged in the cavity B;
a low-pressure generator is also arranged in the cavity B;
a refrigerant steam communicating pipe is arranged between the side gas phase area of the steam generator I and the tube pass inlet of the low-pressure generator;
a low-pressure generator refrigerant water pipe is arranged between the low-pressure generator pipe outlet and the U-shaped pipe I refrigerant water inlet;
a stop valve B is arranged on a hot water pipeline from the condenser II to the condenser I;
and a cooling water outlet pipe is arranged on the hot water pipeline between the outlet condenser II and the stop valve B, and the stop valve A is arranged on the cooling water outlet pipe.
The low pressure generator is arranged above the steam generator II.
A steam electric regulating valve A is further mounted on the second steam inlet of the cavity A; and a steam electric regulating valve B is also arranged on the first steam inlet of the cavity B.
Still be provided with U type pipe II between condenser II and the evaporimeter, the cryogen steam that low pressure generator concentration weak solution produced gets into in condenser II condensation cryogen water of condensation and gets into in U type pipe II and then get into the evaporimeter and flash.
On the basis of the unit, the low-pressure generator can be arranged below the steam generator II in the cavity B.
The utility model has the advantages that:
through two brand-new single-effect heat pump cycles, double-effect refrigeration cycles and valve switching and adjustment, two completely different thermal fields and flow fields of single-effect heating and double-effect refrigeration are realized on the same unit. Because of double-effect refrigeration, the refrigeration coefficient of performance is greatly improved, the steam consumption is saved, the machine has two functions, the initial investment of equipment is reduced, and the occupied space of the equipment is saved. Therefore, the utility model discloses a heat pump set can energy saving and emission reduction realize energy comprehensive utilization during heat supply winter, summer again can the economic benefits and effect refrigeration satisfy air conditioner and production technology use, has improved the annual rate of operation use of unit, has very good economic benefits and social.
Drawings
FIG. 1 is a flow chart of a conventional steam type first-type lithium bromide absorption heat pump unit with a refrigeration function;
fig. 2 is a flow chart of the operation of the single-effect heating and double-effect refrigerating steam type lithium bromide absorption heat pump unit of the present invention;
fig. 3 is a flow chart of another embodiment of the single-effect heating and double-effect refrigerating steam-type lithium bromide absorption heat pump unit of the present invention.
Wherein:
the system comprises a generator 1, a condenser 2, an evaporator 4, an absorber 5, a heat exchanger 3, a solution pump 6, a refrigerant pump 7, an electric steam regulating valve 8, a cooling water bypass valve 9 and a U-shaped pipe 10;
a stop valve A11, a steam electric control valve A12, a cavity A13, a condenser I14, a stop valve B15, a steam generator I16, a refrigerant steam communicating pipe 17, a low-pressure generator 18, a steam generator II19, a condenser II20, a cavity B21, a steam electric control valve B22, a heat exchanger II23, a U-shaped pipe II24, a solution pump II25, a solution pump I26, a U-shaped pipe I27, a low-pressure generator refrigerant water pipe 28 and a heat exchanger I29;
the heating system comprises a first steam inlet 30, a first condensate outlet 31, a cooling water outlet 32, a heating hot water outlet 33, a cold water outlet 34, a waste hot water outlet 35, a cold water inlet 36, a waste hot water inlet 37, a cooling water inlet 38, a heating hot water inlet 39, a second steam inlet 40 and a second condensate outlet 41.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 2, a single-effect heating and double-effect refrigerating steam-type lithium bromide absorption heat pump unit comprises a steam generator I16, a condenser I14, a steam generator II19, a condenser II20, an evaporator 4, an absorber 5, a heat exchanger I29, a heat exchanger II23, a solution pump I26, a solution pump II25 and a refrigerant pump 7;
the generator condenser shell of the unit comprises a cavity A13 and a cavity B21;
the steam generator I16 and the condenser I14 are both arranged in the cavity A13;
the steam generator II19 and the condenser II20 are arranged in the cavity B21;
a low-pressure generator 18 is also added in the cavity B21;
the low pressure generator 18 is arranged above the steam generator II 19;
a refrigerant steam communicating pipe 17 is arranged between the side gas phase area of the steam generator I16 and the tube side inlet of the low-pressure generator 18;
a low-pressure generator refrigerant water pipe 28 is arranged between the tube pass outlet of the low-pressure generator 18 and the refrigerant water inlet of the U-shaped tube I27;
a stop valve B15 is arranged on a hot water pipeline of the outlet condenser II20 and the inlet condenser I14;
a cooling water outlet pipe is arranged on the hot water pipeline between the outlet condenser II20 and the stop valve B15, and the stop valve A11 is arranged on the cooling water outlet pipe.
A steam electric regulating valve A12 is further installed on a second steam inlet 40 pipeline of the cavity A13; and a steam electric regulating valve B22 is also arranged on a pipeline of the first steam inlet 30 of the cavity B21.
And a U-shaped pipe II24 is also arranged between the condenser II20 and the evaporator 4.
In this embodiment, the utility model discloses a single-effect heating double-effect refrigerating steam type lithium bromide absorption heat pump unit its working method as follows:
in the working condition of heat supply of the heat pump in winter, the low-pressure generator 18 stops working, the stop valve A11 is closed, the stop valve B15 is opened, the solution refrigerant circulation in the unit is two single-effect heat pump circulations connected in parallel, and one single-effect heat pump circulation consists of a steam generator I16, a condenser I14, an evaporator 4, an absorber 5, a heat exchanger I29, a solution pump I26 and a refrigerant pump 7; the other single-effect heat pump cycle is composed of a steam generator II19, a condenser II20, an evaporator 4, an absorber 5, a heat exchanger II23, a solution pump II25 and a refrigerant pump 7. Wherein the evaporator 4, the absorber 5 and the refrigerant pump 7 are common parts of the two cycles. Since the coolant vapor temperature is low on the tube side of the low pressure generator 18, the solution is not concentrated, which is equivalent to a shutdown. Steam of an external system respectively enters a steam generator I16 and a steam generator II19 tube pass concentrated dilute solution through a steam electric control valve A12 and a steam electric control valve B22 and is condensed into water to flow out of the unit, residual hot water enters an evaporator 4 tube pass cooling heat and is utilized and then flows out of the unit, the hot water is connected in series, enters an absorber 5 to be heated, then enters a condenser II20 to be heated, then enters a condenser I14 tube pass to be heated and supplies heat to a user;
when the double-effect refrigerating working condition is operated in summer, the stop valve A11 is opened, the stop valve B15 is closed, the steam electric control valve B22 is closed, the condenser I14 and the steam generator II19 stop working, the steam generator I16 becomes a high-pressure generator of the double-effect refrigerating unit, the double-effect steam refrigerating unit is formed by the high-pressure generator, the low-pressure generator 18, the condenser II20, the evaporator 4, the absorber 5, the heat exchanger I29, the heat exchanger II23, the solution pump II25, the solution pump I26 and the refrigerant pump 7, and the double-effect steam refrigerating unit operates according to a parallel refrigerating flow of double-effect steam solution. Steam of an external system enters a high-pressure generator tube pass concentrated dilute solution through a steam electric regulating valve A11 and is condensed into water to flow out of the unit; the cooling water enters the absorber 5 and then enters the condenser II20 tube pass in series to take heat out of the unit; the cold water enters the tube pass of the evaporator 4 to be cooled and becomes cold water to be prepared for a user.
The working principle of the parallel double-effect refrigeration cycle of the solution is as follows: the dilute solution is pumped into the high-pressure generator by a solution pump I26 to be concentrated into the concentrated solution, the generated high-temperature refrigerant steam enters a heat transfer pipe of a low-pressure generator 18 through a refrigerant steam communicating pipe 17 to heat the dilute solution pumped into the low-pressure generator 18 by a solution pump II25 to be concentrated solution, the refrigerant steam in the heat transfer pipe of the low-pressure generator 18 is condensed into refrigerant water, the refrigerant water enters a U-shaped pipe I through a refrigerant water pipe 28 of the low-pressure generator and then enters an evaporator 4 to be flashed, the refrigerant steam generated by the concentrated dilute solution of the low-pressure generator 18 enters a condenser II20 to be condensed, the condensed refrigerant water enters a U-shaped pipe II24 and then enters an evaporator 4 to be flashed, the non-flashed refrigerant water completely enters the bottom of the evaporator 4, the refrigerant water is pumped into the surface of the heat transfer pipe of the evaporator 4 by a refrigerant pump 7 to absorb heat and evaporate, the evaporated refrigerant steam enters an absorber 5 to be absorbed by the concentrated solution sprayed on the, the concentrated solution is changed into dilute solution and enters the bottom of the absorber 5, and heat is taken out of the unit by the cooling water. The required cold water is continuously and circularly produced and used by users.
In another embodiment, as shown in fig. 3, a single-effect heating and double-effect refrigerating steam-type lithium bromide absorption heat pump unit is based on fig. 2, and in a cavity B21, a low-pressure generator 18 is arranged below a steam generator II 19.
In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.
Claims (3)
1. The utility model provides a single-effect heating double-effect refrigerating steam type lithium bromide absorption heat pump unit, the unit includes steam generator I (16), condenser I (14), steam generator II (19), condenser II (20), evaporimeter (4), absorber (5), heat exchanger I (29), heat exchanger II (23), solution pump I (26), solution pump II (25) and refrigerant pump (7), its characterized in that:
the generator condenser shell of the unit comprises a cavity A (13) and a cavity B (21);
the steam generator I (16) and the condenser I (14) are both arranged in the cavity A (13);
the steam generator II (19) and the condenser II (20) are arranged in the cavity B (21);
a low-pressure generator (18) is also arranged in the cavity B (21);
a refrigerant steam communicating pipe (17) is arranged between the vapor phase area at the steam generator I (16) side and the tube side inlet of the low-pressure generator (18);
a low-pressure generator refrigerant water pipe (28) is arranged between the tube side outlet of the low-pressure generator (18) and the refrigerant water inlet of the U-shaped tube I (27);
a stop valve B (15) is arranged on a hot water pipeline from the condenser II (20) to the condenser I (14);
a cooling water outlet pipe is arranged on a hot water pipeline between the outlet condenser II (20) and the stop valve B (15), and a stop valve A (11) is arranged on the cooling water outlet pipe;
the low-pressure generator (18) is arranged above or below the steam generator II (19).
2. The single-effect heating and double-effect refrigerating steam-type lithium bromide absorption heat pump unit as claimed in claim 1, wherein: a steam electric regulating valve A (12) is further mounted on a second steam inlet (40) pipeline of the cavity A (13); and a steam electric regulating valve B (22) is also arranged on a first steam inlet (30) pipeline of the cavity B (21).
3. The single-effect heating and double-effect refrigerating steam-type lithium bromide absorption heat pump unit as claimed in claim 1, wherein: and a U-shaped pipe II (24) is arranged between the condenser II (20) and the evaporator (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920915521.8U CN211233437U (en) | 2019-06-18 | 2019-06-18 | Single-effect heating and double-effect refrigerating steam type lithium bromide absorption heat pump unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920915521.8U CN211233437U (en) | 2019-06-18 | 2019-06-18 | Single-effect heating and double-effect refrigerating steam type lithium bromide absorption heat pump unit |
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| CN211233437U true CN211233437U (en) | 2020-08-11 |
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| CN201920915521.8U Active CN211233437U (en) | 2019-06-18 | 2019-06-18 | Single-effect heating and double-effect refrigerating steam type lithium bromide absorption heat pump unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173924A (en) * | 2019-06-18 | 2019-08-27 | 双良节能系统股份有限公司 | A kind of steam type lithium bromide absorption type heat pump unit of single-action heating double-effect refrigeration |
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2019
- 2019-06-18 CN CN201920915521.8U patent/CN211233437U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173924A (en) * | 2019-06-18 | 2019-08-27 | 双良节能系统股份有限公司 | A kind of steam type lithium bromide absorption type heat pump unit of single-action heating double-effect refrigeration |
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