CN104132480A - Low-grade heat source heat extracting device - Google Patents
Low-grade heat source heat extracting device Download PDFInfo
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- CN104132480A CN104132480A CN201410388959.7A CN201410388959A CN104132480A CN 104132480 A CN104132480 A CN 104132480A CN 201410388959 A CN201410388959 A CN 201410388959A CN 104132480 A CN104132480 A CN 104132480A
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Abstract
The invention discloses a low-grade heat source heat extracting device. The low-grade heat source heat extracting device comprises an evaporator, a double-stage compressor, a high-pressure condenser and an intercooler, wherein the evaporator, the double-stage compressor, the high-pressure condenser and the intercooler are sequentially connected with a circulating loop through a heat exchange medium conveying pipe, the evaporator is a heat exchanger of heat exchange media and a low-grade heat source, the high-pressure condenser is a heat exchanger of the heat exchange media and heat-taking media, the heat exchange media of the high-pressure condenser are divided into two branches after flowing out of an outlet and the intercooler serves as a heat exchanger of the two branches. The low-grade heat source heat extracting device can extract heat from the low-grade heat source, and produce hot water at the temperature of more than 70 DEG C by extracting heat from the heat source below 25 DEG C.
Description
Technical field
The present invention relates to a kind of heating combined equipment, particularly a kind of low-grade heat source heat extraction device.
Background technology
In the industrial processes such as food, medicine, light textile, chemical industry and the densely populated living area such as hotel, hotel, gymnasium, bathing for money place can produce industrial wastewater and the sanitary wastewaters of a large amount of 25 degree left and right, in these waste water, contain huge heat, but because of the grade of heat energy lower, cannot recycle by the mode of direct heat transfer, thereby substantially all be emitted in vain.In addition, these industrial production and life process need again to consume a large amount of energy and produce production and hot water for lifes more than 70 degree.This causes waste heat discharge to cause environmental pollution on the one hand, causes again on the other hand the huge waste of the energy, thereby the waste heat reclaiming in waste water is used for producing the multiple demand that new hot water becomes environment, economy, technology.
Current industrial afterheat recovery use device and technology substantially all for 60 90 degree more high-grade waste heat carry out, cannot recycle the waste heat below 25 degree, thus cannot be directly used in the present invention for use occasion.In addition, simple direct heat transfer means or common heat pump techniques are very low to the recovery utilization rate of waste heat, and do not reach the above outlet temperature requirements of hot water 70 degree.
Simultaneously more existing technological means adopt coal-firedly, and fuel-oil or fuel-gas boiler provides high-temperature-hot-water to have following problem for production technology or heating:
1, need to consume the primary energy such as a large amount of fuel oils or combustion gas, and have certain air pollution;
2, factory often produces the industrial exhaust heat of 20 70 degree in process of production, need to waste heat be discharged in air by cooling tower.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of low-grade heat source heat extraction device is provided, makes it can extract the waste heat of the thermal source below 25 degree.
In order to solve the problems of the technologies described above, the present invention includes the evaporimeter that is connected successively closed circuit by heat exchange medium carrier pipe, double-stage compressor, high pressure condenser and intercooler, described evaporimeter is the heat exchanger of described heat exchange medium and low-grade heat source, described high pressure condenser is described heat exchange medium and with the heat exchanger of thermal medium, after the heat exchange medium exit of high pressure condenser, be divided into two branch roads, cold choke valve during one of them branch road is provided with, this branch road connects the second-compressed chamber of double-stage compressor through intercooler, another branch road connects evaporimeter by electric expansion valve after intercooler, the heat exchange medium carrier pipe that connects evaporimeter and double-stage compressor is connected to the first compression chamber of double-stage compressor, intercooler is the heat exchanger of described two branch roads.
In order to remove the moisture content in heat exchange medium, the heat exchange medium exit of described high pressure condenser was connected to device for drying and filtering before the branch road being divided into described in two.
In order to improve disposal ability of the present invention, described double-stage compressor comprises many double-stage compressors in parallel.
For the ease of realizing automatic control, the present invention also includes controller, described double-stage compressor, in cold choke valve be all connected with controller with electric expansion valve.
The invention has the beneficial effects as follows: the present invention draws the heat of low-grade heat source by the heat exchange medium of low-temp low-pressure, then by compressor, the gaseous heat exchange medium of low-temp low-pressure is compressed into the heat exchange medium of HTHP, then the heat exchange medium of HTHP passes to heat with thermal medium by efficient condenser, from efficient condenser out the liquid heat exchange media of warm high pressure be divided into two-way, and carry out heat exchange by intercooler, the part of heat absorption is passed to compressor further to circulate, the part of heat release is passed to evaporimeter further to circulate with passing to compressor after extraction low-grade heat source again.Thereby realize from low-grade heat source and extract heat, the present invention can realize from the thermal source extraction heat below 25 degree and produce hot water more than 70 degree.Energy-saving benefit of the present invention is remarkable, and relatively traditional compares with hot mode, and energy-conservation 40% ∽ is more than 60%; The present invention can extract heat generation high-temperature-hot-water in various low-grade water sources for the production of heating heat, has saved the primary energy such as coal and oil combustion gas; The present invention can substitute original boiler, and fire coal, fuel oil, combustion of natural gas amount significantly reduce, and toxic emission reduces, very energy-conserving and environment-protective.
Accompanying drawing explanation
Fig. 1 is flow chart of the present invention;
In figure: 1, double-stage compressor, 2, controller, 3, high pressure condenser, 4, with thermal medium, 5, device for drying and filtering, 6, in cold choke valve, 7, branch road one, 8, branch road two, 9, intercooler, 10, electric expansion valve, 11, low-grade heat source, 12, evaporimeter.
In figure: filled arrows represents the flow direction of heat exchange medium, hollow arrow represents the flow direction of low-grade heat source, the flow direction of thermal medium for opening type arrow table.
The specific embodiment
A kind of specific embodiment as shown in Figure 1, it comprises the evaporimeter 12 that is connected successively closed circuit by heat exchange medium carrier pipe, double-stage compressor 1, high pressure condenser 3 and intercooler 9, evaporimeter 12 is the heat exchanger of heat exchange medium and low-grade heat source 11, high pressure condenser 3 is heat exchange medium and with the heat exchanger of thermal medium 4, after the heat exchange medium exit of high pressure condenser 3, be divided into two branch roads, be respectively branch road 1 and branch road 28, cold choke valve 6 during branch road 1 is provided with, branch road 1 connects the second-compressed chamber of double-stage compressor 1 through intercooler 9, branch road 28 connects evaporimeter 12 by electric expansion valve 10 after intercooler 9, the heat exchange medium carrier pipe that connects evaporimeter 12 and double-stage compressor 1 is connected to the first compression chamber of double-stage compressor 1, intercooler 9 is the heat exchanger of branch road 28 and branch road 1.The heat exchange medium exit of high pressure condenser 3 was connected to device for drying and filtering 5 before the branch road being divided into described in two.
This specific embodiment also includes controller 2, double-stage compressor 1, in cold choke valve 6 be all connected with controller 1 with electric expansion valve 10.
Operation principle: temperature enters evaporimeter 12 lower than the low-grade heat source 11 of 25 degree, heat is passed to the liquid heat exchange media in evaporimeter 12, liquid heat exchange media in evaporimeter 12 absorbs the one-level compression chamber that the gaseous heat exchange medium that becomes low-temp low-pressure after heat enters double-stage compressor 1 and compresses the heat exchange medium that becomes medium temperature and medium pressure, the saturated gaseous heat exchange medium of the medium temperature and medium pressure of the heat exchange medium of medium temperature and medium pressure and intercooler 9 is mixed into compressor secondary compression chamber and carries out the heat exchange medium that second-compressed becomes HTHP and enter high pressure condenser 3, HTHP heat exchange medium in high pressure condenser 3 passes through heat with thermal medium 4, obtain the thermal medium of using of high temperature, with thermal medium, can be water, while being water, can produce higher than high-temperature-hot-waters more than 70 degree, HTHP heat exchange medium is condensed into the liquid heat exchange media of middle temperature high pressure simultaneously, after the liquid heat exchange media of middle temperature high pressure is dry by device for drying and filtering 5, be divided into main fluid path (branch road 2 8) and enter intercooler 9 with throttling branch road (branch road 1) two-way, wherein the heat exchange medium of throttling branch road through in cold choke valve 6 force down warm heat exchange medium in becoming and enter the second-compressed chamber that saturated gaseous heat exchange medium that intercooler 9 evaporations become medium temperature and medium pressure enters double-stage compressor 1, main fluid path heat exchange medium through intercooler 9 cross cold after by becoming the liquid heat exchange media Returning evaporimeter 12 of low-temp low-pressure after electric expansion valve 10 throttlings, thereby form a systemic circulation.
Claims (4)
1. a low-grade heat source heat extraction device, it is characterized in that: comprise the evaporimeter that is connected successively closed circuit by heat exchange medium carrier pipe, double-stage compressor, high pressure condenser and intercooler, described evaporimeter is the heat exchanger of described heat exchange medium and low-grade heat source, described high pressure condenser is described heat exchange medium and with the heat exchanger of thermal medium, after the heat exchange medium exit of high pressure condenser, be divided into two branch roads, cold choke valve during one of them branch road is provided with, this branch road connects the second-compressed chamber of double-stage compressor through intercooler, another branch road connects evaporimeter by electric expansion valve after intercooler, the heat exchange medium carrier pipe that connects evaporimeter and double-stage compressor is connected to the first compression chamber of double-stage compressor, intercooler is the heat exchanger of described two branch roads.
2. low-grade heat source heat extraction device according to claim 1, is characterized in that: the heat exchange medium exit of described high pressure condenser was connected to device for drying and filtering before the branch road being divided into described in two.
3. low-grade heat source heat extraction device according to claim 1 and 2, is characterized in that: described double-stage compressor comprises many double-stage compressors in parallel.
4. low-grade heat source heat extraction device according to claim 3, is characterized in that: also include controller, described double-stage compressor, in cold choke valve be all connected with controller with electric expansion valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410388959.7A CN104132480A (en) | 2014-08-08 | 2014-08-08 | Low-grade heat source heat extracting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410388959.7A CN104132480A (en) | 2014-08-08 | 2014-08-08 | Low-grade heat source heat extracting device |
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| Publication Number | Publication Date |
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| CN104132480A true CN104132480A (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410388959.7A Pending CN104132480A (en) | 2014-08-08 | 2014-08-08 | Low-grade heat source heat extracting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107940923A (en) * | 2017-12-19 | 2018-04-20 | 贝莱特空调有限公司 | A kind of Multi-functional dehumidifying dryer system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05172428A (en) * | 1991-11-18 | 1993-07-09 | Sanden Corp | Engine heat pump system |
| CN2435708Y (en) * | 2000-03-24 | 2001-06-20 | 青岛旭日节能设备有限公司 | Oil production waste heat heat pump recovery and utilization plant |
| CN1376251A (en) * | 1999-09-24 | 2002-10-23 | 三洋电机株式会社 | Multi-stage compression refrigerating device |
| CN204006794U (en) * | 2014-08-08 | 2014-12-10 | 贝莱特空调有限公司 | A kind of low-grade heat source heat extraction device |
-
2014
- 2014-08-08 CN CN201410388959.7A patent/CN104132480A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05172428A (en) * | 1991-11-18 | 1993-07-09 | Sanden Corp | Engine heat pump system |
| CN1376251A (en) * | 1999-09-24 | 2002-10-23 | 三洋电机株式会社 | Multi-stage compression refrigerating device |
| CN2435708Y (en) * | 2000-03-24 | 2001-06-20 | 青岛旭日节能设备有限公司 | Oil production waste heat heat pump recovery and utilization plant |
| CN204006794U (en) * | 2014-08-08 | 2014-12-10 | 贝莱特空调有限公司 | A kind of low-grade heat source heat extraction device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107940923A (en) * | 2017-12-19 | 2018-04-20 | 贝莱特空调有限公司 | A kind of Multi-functional dehumidifying dryer system |
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Application publication date: 20141105 |