CN211204189U - One-machine multi-effect heat pump system for peak regulation heat supply plant - Google Patents
One-machine multi-effect heat pump system for peak regulation heat supply plant Download PDFInfo
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Abstract
A multiple-effect heat pump system for peak regulation heat supply plant. The utility model discloses utilize same group's heat pump, realize flue gas waste heat recovery through used heat acquisition device boiler winter with hot peak period. And when the boiler is not started in the cold peak period in summer, switching is carried out by the switching valve and the boiler is used for waste heat recovery of a sewage source or waste heat recovery of other renewable energy sources. The utility model can use the recovered heat for heating the boiler return water; or the system is used for combined cooling and heating in summer, and when refrigerating a plant area and peripheral public buildings, the water temperature of the return water main pipe of the large network is heated from 45 ℃ to 70 ℃ and then is fed into the water supply, so that domestic hot water service is provided for cities. The utility model discloses can carry out sewage waste heat recovery when the refrigeration is supplied with surplus. The utility model discloses can make full use of the energy, realize that the multipotency coupling is complementary, ensure the operation of the full operating mode of heat pump, reduce investment recovery phase.
Description
Technical Field
The utility model relates to a cold and hot cogeneration equipment field particularly relates to a quick-witted multiple-effect heat pump system for peak regulation heat supply factory.
Background
The existing heat supply plant has single function and generally only outputs heat energy. In summer, the existing heat plant has excess capacity, and resource waste is easy to occur. Flue gas output by a boiler of a heat plant contains a large amount of waste heat, and the urban environment is easily affected by the heat island effect caused by directly discharging the waste heat.
In the existing summer cooling mode driven by an urban heat supply network, a hot water type absorption refrigerator of a building refrigeration station is driven to supply cold for a building mainly by abundant heat energy in summer of a thermal power plant. However, in practical application, it is found that the relative heat loss and the transmission energy consumption of the heat distribution network in summer are inherently large (more than 30-50% in beijing), and although the method can utilize urban heat distribution network resources which are idle in summer, the heat loss and the transmission energy consumption of the heat distribution network caused by the driving of hot water in the pipeline are very large, and the refrigeration effect is not ideal.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art not enough, provide a quick-witted multiple-effect heat pump system for peak regulation heat supply factory, the utility model discloses a used heat obtaining device obtains the used heat in boiler flue gas or the waste water, utilizes the big net return water of waste heat heating through the heat pump, realizes the make full use of to the used heat. The utility model discloses specifically adopt following technical scheme.
Firstly, in order to achieve the above object, a multi-effect heat pump system for peak shaving heat supply plant is provided, which comprises: a cold water receiving end of the heat pump is connected with a water return main pipe, and a hot water output end of the heat pump is connected with a water supply main pipe; the heat pump receives heat energy of the heat medium, heats cold water received by the cold water receiving end by using the heat energy of the heat medium, and outputs hot water obtained after heating to the water supply main pipe from the hot water output end; the switching valve comprises at least two input ends and at least one output end, and the output end is connected with a waste heat receiving end of the heat pump and is used for providing a heat medium for the heat pump; the waste heat obtaining device is arranged on the waste heat pipe and comprises a medium input port and a medium outlet, the medium outlet of each waste heat obtaining device is respectively connected with one input end of the switching valve, and the medium inlet of each waste heat obtaining device is respectively connected with the cold medium discharge end of the heat pump; the waste heat obtaining device obtains waste heat in the waste heat pipe by using a medium, and heats the medium by using the waste heat to provide the medium to the switching valve and a waste heat receiving end of the heat pump connected with the switching valve.
Optionally, the one-machine multi-effect heat pump system for the peak shaving heat supply plant is any one of the above, wherein the waste heat pipe comprises a flue gas discharge pipe of a boiler, or a sewage pipe.
Optionally, the above one multi-effect heat pump system for peak shaving heat supply plant, wherein the waste heat obtaining device includes: a pipe sleeve surrounding the outer circumference of the waste heat pipe; an upper ring-shaped header pipe provided between an outer periphery of the waste heat pipe and an inner wall of the pipe sleeve, the upper ring-shaped header pipe being provided on an inner upper side of the pipe sleeve, the upper ring-shaped header pipe surrounding an outer peripheral surface of the waste heat pipe; a lower annular header pipe disposed between an outer periphery of the waste heat pipe and an inner wall of the pipe sleeve, the lower annular header pipe being disposed at an inner lower side of the pipe sleeve, the lower annular header pipe surrounding an outer peripheral surface of the waste heat pipe; the upper end of the upper main branch pipe is communicated with the upper annular main pipe, and the lower end of the upper main branch pipe extends to the middle part of the pipe sleeve; the lower end of the lower main branch pipe is communicated with the lower annular main pipe, and the upper end of the lower main branch pipe extends to the middle part of the pipe sleeve; the first medium pipe is connected between the lower end of the upper main branch pipe and the upper end of the lower main branch pipe, the second medium pipe is communicated with the first medium pipe, the upper end of the second medium pipe is communicated with the lower end of the upper main branch pipe, and the lower end of the second medium pipe is communicated with the upper end of the lower main branch pipe; the first medium pipe and the second medium pipe are respectively parallel to the axis of the waste heat pipe and are uniformly distributed on the periphery of the waste heat pipe; the medium inlet is connected with the upper annular header pipe, penetrates out of the upper part of the pipe sleeve and inputs cold media into the first medium pipe and the second medium pipe; and the medium outlet is connected with the lower annular main pipe, penetrates out of the lower part of the pipe sleeve, and outputs a heat medium obtained by heating waste heat in the waste heat pipe.
Optionally, in any one of the multiple-effect heat pump systems for peak shaving heat supply plants, two adjacent first medium pipes and two adjacent second medium pipes are connected in parallel to form an annular pipeline, and the wall thickness of the annular pipeline is smaller than that of the upper main branch pipe or the lower main branch pipe.
Optionally, the one-machine multi-effect heat pump system for peak regulation heat supply plant, wherein one side of the first medium pipe and the second medium pipe close to the waste heat pipe is set to be a flat structure, and a radian fitting the periphery of the waste heat pipe is arranged on the surface of the flat structure.
Optionally, the one-machine multi-effect heat pump system for the peak regulation heat supply plant is characterized in that a heat transfer material is filled between the first medium pipe and the second medium pipe, and between the first medium pipe and the waste heat pipe and between the second medium pipe and the waste heat pipe.
Optionally, the one-machine multi-effect heat pump system for peak shaving heat supply plants, wherein the heat transfer material comprises copper alloy or aluminum alloy.
Optionally, in any one of the multiple-effect heat pump systems for peak shaving heat supply plants, a heat insulating material is laid between the outer sides of the first medium pipe and the second medium pipe and the inner wall of the pipe sleeve.
Optionally, the one-machine multi-effect heat pump system for peak shaving heat supply plants as described above, wherein the heat insulating material comprises asbestos.
Advantageous effects
The utility model discloses utilize same group's heat pump, realize flue gas waste heat recovery through used heat acquisition device boiler winter with hot peak period. And when the boiler is not started in the cold peak period in summer, switching is carried out by the switching valve and the boiler is used for waste heat recovery of a sewage source or waste heat recovery of other renewable energy sources. The utility model can use the recovered heat for heating the boiler return water; or the system is used for combined cooling and heating in summer, and when refrigerating a plant area and peripheral public buildings, the water temperature of the return water main pipe of the large network is heated from 45 ℃ to 70 ℃ and then is fed into the water supply, so that domestic hot water service is provided for cities. The utility model discloses can carry out sewage waste heat recovery when the refrigeration is supplied with surplus. The utility model discloses can make full use of the energy, realize that the multipotency coupling is complementary, ensure the operation of the full operating mode of heat pump, reduce investment recovery phase.
The utility model provides a used heat obtaining device, it can directly cup joint through the welding mode and fix in the waste heat pipe periphery, need not improve the structure of waste heat pipe itself, convenient construction. And, this kind of mode of cup jointing still makes the utility model discloses gas or liquid among the well waste heat pipe do not with medium or medium circulation pipeline direct contact in the device, can avoid medium circulation pipeline to be corroded, prolong waste heat acquisition device's life. The annular pipeline formed by the first medium pipe and the second medium pipe can be set to be thinner through two pipeline wind flows, so that heat exchange is facilitated, and the absorption rate of waste heat is improved.
In addition, for the endothermic effect that improves used heat acquisition device, the utility model discloses further set up it into multiunit medium pipe parallelly connected, unified design medium carries out the heat exchange by the inside used heat pipe who surrounds of unified direction entering medium pipe and medium pipe. In order to improve the heat exchange efficiency, the inlet of the medium pipe is further designed to be positioned at the position, close to the outlet, of the waste heat pipe with lower temperature, so that the temperature difference between the medium and the waste heat pipe is smaller when the medium enters the medium pipe, and the heat conduction efficiency of the medium can be effectively improved. The uniform medium flow direction can avoid medium convection to lose heat.
The inside wall of medium pipe is provided with the radian of cooperation waste heat pipe, can effectively increase both areas of contact, fully carries out the heat exchange. The heat transfer materials arranged between the medium pipes and on one side close to the waste heat pipe can help the medium in the medium pipes to obtain the heat of the waste heat pipe, and the external heat insulation materials can effectively reduce the dissipation of the heat in the medium. Therefore, the utility model discloses can the efficient realize the recovery to used heat.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, together with the embodiments of the invention for the purpose of explanation and not limitation of the invention. In the drawings:
fig. 1 is a schematic view of the overall structure of a one-machine multiple-effect heat pump system of the present invention;
FIG. 2 is a schematic diagram of the overall configuration of the waste heat recovery device of the system of FIG. 1;
fig. 3 is a schematic view of a cross section of the waste heat obtaining apparatus a-a of fig. 2.
In the drawings, 1 denotes a heat pump; 2 denotes a boiler; 3 denotes a first exhaust heat obtaining device; 4 denotes a second exhaust heat obtaining device; 5 denotes a switching valve; 31 denotes a waste heat pipe; 41 denotes a pipe sleeve; 42 denotes a medium pipe; 43 denotes a media inlet; and 44 a medium outlet.
Detailed Description
In order to make the purpose and technical solution of the embodiments of the present invention clearer, the following description will clearly and completely describe the technical solution of the embodiments of the present invention by combining the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The meaning of "and/or" in the present invention means that they exist individually or both at the same time.
The meaning of "inside and outside" in the present invention means that the direction from the pipe sleeve to the inside of the waste heat pipe is inside, and vice versa, with respect to the waste heat obtaining device itself; and not to the specific limitations of the device mechanism of the present invention.
The term "connected" as used herein may mean either a direct connection between elements or an indirect connection between elements through other elements.
Fig. 1 is a multi-effect heat pump system for peak shaving heat supply plant according to the utility model, which includes:
a cold water receiving end of the heat pump 1 is connected with a water return main pipe, and a hot water output end of the heat pump is connected with a water supply main pipe; the heat pump receives heat energy of the heat medium, heats cold water received by the cold water receiving end by using the heat energy of the heat medium, and outputs hot water obtained after heating to the water supply main pipe from the hot water output end;
the switching valve 5 comprises at least two input ends and at least one output end, and the output end is connected with a waste heat receiving end of the heat pump 1 and is used for providing a heat medium for the heat pump 1;
the waste heat obtaining devices are arranged on the waste heat pipes and comprise medium input ports and medium outlet ports, the medium outlet port of each waste heat obtaining device is respectively connected with one input end of the switching valve, and the medium inlet port of each waste heat obtaining device is respectively connected with the cold medium discharge end of the heat pump 1; the waste heat obtaining device obtains waste heat in the waste heat pipe by using a medium, and heats the medium by using the waste heat, thereby providing the medium to the switching valve 5 and a waste heat receiving end of the heat pump connected to the switching valve.
Therefore, during the heat utilization peak period, the system can firstly adjust the conduction direction of the switching valve 5, receive the heat medium output by the waste heat acquisition device arranged on the flue gas discharge pipe of the boiler, and convey the heat medium to the waste heat receiving end of the heat pump 1; then, the heat pump 1 receives the heat energy of the heat medium, the heat energy of the heat medium is used for heating the cold water received by the cold water receiving end of the heat pump 1 from the water return main pipe, and the heated hot water is output to the water supply main pipe from the hot water output end.
During the cold peak, the same set of heat pump can be used, the conduction direction of the switching valve 5 is firstly adjusted, the heat medium output by the waste heat acquisition device arranged on the sewage pipe is received, and the heat medium is conveyed to the waste heat receiving end of the heat pump 1; then, the heat pump 1 is used for receiving the heat energy of the heat medium, the heat energy of the heat medium is used for heating the cold water received by the cold water receiving end of the heat pump 1 from the water return main pipe, and the heated hot water is output to the water supply main pipe from the hot water output end.
The utility model can realize the recovery of the flue gas waste heat of the boiler in winter through the same group of heat pumps in the whole period of providing life hot water service for cities by heating power large networks in winter and continuously operating in summer; and when the boiler is not started in summer, the same group of heat pumps are used for recovering waste heat of a sewage source or other renewable energy sources. The utility model discloses can be used for retrieving the heat that obtains and heating the boiler return water, be used for the cold and hot confession of ally oneself with in summer, in for factory and peripheral public building refrigerated, heat the return water of big net from 45 degrees to 70 degrees and squeeze into and supply water, provide life hot water service for the city. The utility model discloses can carry out sewage waste heat recovery when the refrigeration is supplied with surplus.
In order to improve the efficiency of waste heat recovery, the waste heat recovery device of the system may be a flue gas discharge pipe of a boiler, or a waste heat recovery device shown in fig. 2 may be provided in a sewage pipe. The waste heat obtaining device can be specifically set to be composed of the following structures:
a sleeve 41 surrounding the outer periphery of the waste heat pipe 31;
the medium pipes comprise a plurality of groups, and each group of medium pipes are uniformly distributed between the periphery of the waste heat pipe 31 and the inner wall of the pipe sleeve 41; each group of the first medium pipe and the second medium pipe 42 are respectively arranged in parallel to the axis of the waste heat pipe 31;
a medium inlet 43 connected to a first end of each medium pipe, for inputting a cooling medium into the first medium pipe and the second medium pipe 42;
and a medium outlet 44 connected to the second end of each medium pipe, outputting a heat medium obtained by heating with waste heat in the waste heat pipe.
As shown in the cross section of fig. 3, in order to control the medium flow direction in the medium pipes, avoid medium convection heat loss, and avoid absorption of heat energy due to an excessive medium temperature difference, each group of the first medium pipe and the second medium pipe 42 may be respectively configured to include two first medium pipes and two second medium pipes which are connected in parallel to form a ring. One common end of the two first medium pipes and the second medium pipe, which is close to the outlet of the waste heat pipe 31, is connected with the medium inlet 43, and the other common end of the two first medium pipes and the second medium pipe, which is close to the inlet of the waste heat pipe 31, is connected with the medium outlet 44. Therefore, the structure can realize that a plurality of groups of medium pipes are connected in parallel, and the medium is uniformly designed to enter the medium pipes from a uniform direction to exchange heat with the waste heat pipe surrounded by the inside of the medium pipes. In order to improve the heat exchange efficiency, under a more preferable implementation mode, the inlet of the medium pipe can be further designed to be positioned at the position, close to the outlet, of the waste heat pipe with lower temperature, so that the temperature difference between the medium and the waste heat pipe is smaller when the medium enters the medium pipe, and the heat conduction efficiency of the medium can be effectively improved. The uniform medium flow direction can avoid medium convection to lose heat.
In order to reduce the thickness of the pipe wall and increase the heat exchange area and efficiency, in the above structure, as shown in fig. 3, the medium pipe may be further configured to include:
an upper annular manifold provided between the outer periphery of the waste heat pipe 31 and the inner wall of the pipe sleeve 41, the upper annular manifold being provided on the inner upper side of the pipe sleeve 41, the upper annular manifold surrounding the outer peripheral surface of the waste heat pipe 31;
a lower annular manifold provided between the outer periphery of the waste heat pipe 31 and the inner wall of the pipe casing 41, the lower annular manifold being provided on the inner lower side of the pipe casing 41, the lower annular manifold surrounding the outer peripheral surface of the waste heat pipe 31;
an upper main branch pipe, the upper end of which is communicated with the upper annular main pipe, and the lower end of which extends to the middle of the pipe sleeve 41;
a lower main branch pipe, the lower end of which is communicated with the lower annular main pipe, and the upper end of which extends to the middle of the pipe sleeve 41;
a first medium pipe connected between a lower end of the upper main branch pipe and an upper end of the lower main branch pipe,
the upper end of the second medium pipe is communicated with the lower end of the upper main branch pipe, and the lower end of the second medium pipe is communicated with the upper end of the lower main branch pipe; each of the first medium pipe and the second medium pipe 42 is parallel to the axis of the waste heat pipe 31, and is uniformly arranged on the periphery of the waste heat pipe 31.
Thus, the medium inlet 43 may be specifically configured to be connected to the upper ring-shaped header pipe, the medium inlet 43 penetrates through the upper portion of the pipe sleeve 41, and the cooling medium is input into the first medium pipe and the second medium pipe 42; the medium outlet 44 may be specifically configured to be connected to the lower annular manifold, the medium outlet 44 penetrates through a lower portion of the pipe sleeve 41, and the medium outlet 44 outputs a heat medium obtained by heating waste heat in the waste heat pipe.
One side of the first medium pipe and the second medium pipe 42 close to the waste heat pipe 31 is set to be a flat structure, and the surface of the flat structure is provided with a radian fitting the periphery of the waste heat pipe 31. The first medium pipe and the second medium pipe 42 may be specifically selected to be copper pipes to improve heat conductivity and heat exchange efficiency.
In order to avoid heat dissipation of the waste heat obtaining device and further improve the heat absorption in the waste heat obtaining device, metal materials such as copper alloy particles and aluminum alloy particles or other heat transfer materials can be filled between the first medium pipe and the second medium pipe 42 and between the medium pipe and the periphery of the waste heat pipe 31 to realize heat transfer. And heat insulating materials such as asbestos can be further paved between the outer sides of the first medium pipe and the second medium pipe 42 and the inner wall of the pipe sleeve 41, so that heat absorbed by the medium is reduced from being dissipated to the outside, and the pipe wall of the medium pipe is protected.
For the further realization to the accurate regulation and control of big net return water temperature, the utility model discloses still can be suitable through setting for fixed cycle inspection diverter valve opening degree or flow, it is undulant to reduce the temperature. The adjustment period may be set every hour or every half day. The direction of opening, the degree of opening and/or the flow rate of the switching valve 5 can be adjusted in each cycle in accordance with the following steps:
step c1, firstly measuring the surface temperature T of the flue gas discharge pipe and/or the sewage pipe of the boiler, and measuring the environmental temperature T; measuring the temperature w of cold water received in a return water main pipe;
step c2, calculating the proportionality constant Kp ═ log (T-T)4(ii) a Calculating an integral constant Ki ═ w-T |; calculating a differential constant
Wherein, delta t represents the change rate of the temperature t of the surface of a flue gas discharge pipe and/or a sewage pipe of the boiler in two adjacent periods, and delta w represents the change rate of the temperature w of cold water received in a return water main pipe in two adjacent periods;
step c3, according to
The opening degree O of the switching valve 5 is obtained by calculationi+1According to the opening degree Oi+1Adjusting the opening of the switching valve 5 and/or the flow rate of the medium in the switching valve;
wherein, OiRepresenting the opening of the switch valve 5 and/or the flow rate of the medium in the switch valve in the previous cycle; o isi-1Indicating the opening of the switch valve 5 and/or the flow rate of the medium in the switch valve in the first two cycles.
Because each coefficient can accurately reflect the ambient temperature and the temperature of each heat exchange main body in the system, the opening degree of the switching valve 5 and/or the flow rate of the medium in the switching valve, which are obtained by calculating the coefficients, can effectively correct the influence of each main body temperature change or the ambient temperature change on the heat exchange efficiency of the system, and effectively stabilize the temperature of the hot water output by the system.
The above description is only for the embodiments of the present invention, and the description is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes and modifications can be made, which all fall within the scope of the present invention.
Claims (9)
1. A one-machine multi-effect heat pump system for peak shaving heat supply plants, comprising:
the cold water receiving end of the heat pump (1) is connected with a water return main pipe, and the hot water output end of the heat pump is connected with a water supply main pipe; the heat pump receives heat energy of the heat medium, heats cold water received by the cold water receiving end by using the heat energy of the heat medium, and outputs hot water obtained after heating to the water supply main pipe from the hot water output end;
the switching valve (5) comprises at least two input ends and at least one output end, the output end is connected with a waste heat receiving end of the heat pump (1) and provides heat medium for the heat pump (1);
the waste heat obtaining device is arranged on the waste heat pipe and comprises a medium input port and a medium outlet, the medium outlet of each waste heat obtaining device is respectively connected with one input end of the switching valve, and the medium inlet of each waste heat obtaining device is respectively connected with the cold medium discharge end of the heat pump (1); the waste heat acquisition device acquires waste heat in the waste heat pipe by using a medium, and heats the medium by using the waste heat to provide the medium to the switching valve (5) and a waste heat receiving end of the heat pump connected with the switching valve.
2. The multiple-effect heat pump system for peak shaving heat supply plants according to claim 1, wherein the waste heat pipe comprises a flue gas discharge pipe of a boiler, or a sewage pipe.
3. The multi-effect heat pump system of claim 1, wherein the waste heat extraction device comprises:
a sleeve (41) surrounding the outer periphery of the waste heat pipe (31);
an upper annular header pipe provided between an outer periphery of the waste heat pipe (31) and an inner wall of the pipe sleeve (41), the upper annular header pipe being provided on an inner upper side of the pipe sleeve (41), the upper annular header pipe surrounding an outer peripheral surface of the waste heat pipe (31);
a lower annular header pipe provided between an outer periphery of the waste heat pipe (31) and an inner wall of the pipe sleeve (41), the lower annular header pipe being provided on an inner lower side of the pipe sleeve (41), the lower annular header pipe surrounding an outer peripheral surface of the waste heat pipe (31);
an upper main branch pipe, the upper end of which is communicated with the upper annular main pipe, and the lower end of which extends to the middle part of the pipe sleeve (41);
the lower end of the lower main branch pipe is communicated with the lower annular main pipe, and the upper end of the lower main branch pipe extends to the middle of the pipe sleeve (41);
a first medium pipe connected between a lower end of the upper main branch pipe and an upper end of the lower main branch pipe,
the upper end of the second medium pipe is communicated with the lower end of the upper main branch pipe, and the lower end of the second medium pipe is communicated with the upper end of the lower main branch pipe; the first medium pipe and the second medium pipe (42) are respectively parallel to the axis of the waste heat pipe (31) and are uniformly distributed on the periphery of the waste heat pipe (31);
a medium inlet (43) connected with the upper annular header pipe, wherein the medium inlet (43) penetrates out from the upper part of the pipe sleeve (41) and inputs cold media into the first medium pipe and the second medium pipe (42);
and a medium outlet (44) connected with the lower annular manifold, wherein the medium outlet (44) penetrates out from the lower part of the pipe sleeve (41), and the medium outlet (44) outputs a heat medium obtained by heating waste heat in the waste heat pipe.
4. The multiple-effect heat pump system for peak shaving heat supply plants according to claim 3, wherein two adjacent first medium pipes and second medium pipes (42) are respectively connected in parallel to form an annular pipeline, and the wall thickness of the annular pipeline is smaller than that of the upper main branch pipe or the lower main branch pipe.
5. The multiple-effect heat pump system for peak shaving heat supply plants according to claim 3, wherein one side of the first medium pipe and the second medium pipe (42) close to the waste heat pipe (31) is provided with a flat structure, and the surface of the flat structure is provided with a radian fitting the periphery of the waste heat pipe (31).
6. The multiple-effect heat pump system for peak shaving heat supply plants according to claim 3, wherein heat transfer material is filled between the first medium pipe and the second medium pipe (42), and between the first medium pipe and the outer periphery of the waste heat pipe (31) and the second medium pipe (42).
7. The multiple-effect heat pump system for peak shaving heat supply plants according to claim 6, wherein the heat transfer material comprises a copper alloy or an aluminum alloy.
8. The multiple-effect heat pump system for peak shaving heat supply plants according to claim 3, characterized in that a heat insulating material is laid between the outer sides of the first and second medium pipes (42) and the inner wall of the pipe sleeve (41).
9. The multiple-effect heat pump system for peak shaving heat supply plants of claim 8, wherein the insulation material comprises asbestos.
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| CN110873354A (en) * | 2019-12-23 | 2020-03-10 | 北京市热力集团有限责任公司 | One-machine multi-effect heat pump system for peak regulation heat supply plant and heat pump control method |
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| CN110873354A (en) * | 2019-12-23 | 2020-03-10 | 北京市热力集团有限责任公司 | One-machine multi-effect heat pump system for peak regulation heat supply plant and heat pump control method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |