CN209910089U - Reheating air conditioner using condensation heat of cooling water - Google Patents
Reheating air conditioner using condensation heat of cooling water Download PDFInfo
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- CN209910089U CN209910089U CN201920454592.2U CN201920454592U CN209910089U CN 209910089 U CN209910089 U CN 209910089U CN 201920454592 U CN201920454592 U CN 201920454592U CN 209910089 U CN209910089 U CN 209910089U
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Abstract
The utility model discloses a reheat air conditioner utilizing condensation heat of cooling water, which comprises a cooling tower, a combined air conditioning unit and a water chilling unit, wherein a reheat section is arranged behind a surface cooling section of the combined air conditioning unit, a water inlet pipe and a water outlet pipe of a heat exchanger in the reheat section are respectively connected with a hot water supply pipe and a water return pipe of the air conditioner, a temperature control valve is arranged on the water outlet pipe of the heat exchanger, the reheat air conditioner also comprises a branch pipe I and a branch pipe II, one end of the branch pipe I is communicated with the cooling water return pipe, the other end of the branch pipe I is connected with a hot water supply pipe in parallel, and the branch; one end of the branch pipe II is communicated with a cooling water supply pipe, the other end of the branch pipe II is communicated with a hot water return pipe in parallel, and a valve III and a valve IV are respectively arranged on the branch pipe II and the hot water return pipe. Compared with a dew point air supply system, the cooling water reheating system of the utility model can ensure the control of relative humidity without additional energy consumption; the purposes of reheating air by using cooling water and recovering the water cooling amount of condensation to reduce the temperature of the cooling water are achieved.
Description
The technical field is as follows:
the utility model relates to an air conditioner field especially relates to an utilize reheat formula air conditioner of cooling water condensation heat.
Background art:
with the development of national economy and the improvement of the living standard of people, the ratio of the building energy consumption and the social total energy consumption in China is increased year by year, the energy consumption of heating, air conditioning and ventilation accounts for about 65 percent of the building energy consumption, and the building energy conservation becomes one of the key measures for realizing the purposes of energy conservation and emission reduction in China. However, the use standards of some buildings have certain requirements (such as temperature, relative humidity and the like), and the reduction of the use standards is obviously not suitable in view of the trend of ever-increasing living levels.
In the annual operation of the air conditioning system, the indoor load is rarely equal to the design load, and the load change is inevitably caused by the change of outdoor parameters and indoor heat and humidity sources. For a constant-air-volume air conditioning system, the indoor temperature and humidity are kept within a certain allowable range, and the indoor temperature and humidity can be adjusted only by changing air supply parameters. For the summer working conditions of crowded places such as restaurants, report halls and the like, when the outdoor temperature is reduced and the indoor heat and humidity source is unchanged, the heat and humidity ratio is reduced. If a dew point air supply system is adopted, when the heat-humidity ratio is reduced to a certain degree, the temperature of chilled water is required to be reduced, so that the evaporation temperature of a water chilling unit is reduced, COP is reduced, and the energy consumption is increased, and the condition that the dew point of the machine cannot be found possibly occurs along with the continuous reduction of the heat-humidity ratio; if the dew-point air during reheating is sent into a room, the air supply parameters are adjusted at the moment, and only the design temperature can be ensured, so that the relative humidity of an air conditioning area is large, and the thermal comfort of a human body is reduced. If a reheating type system is adopted, the accurate control of the temperature and the humidity of an air conditioning area can be ensured, when the load is reduced, the air supply parameters can be adjusted by increasing the reheating quantity, but the conventional reheating heat source is electricity, steam or domestic hot water. The conventional heat source is adopted, energy waste is caused by cold and heat offset, and an independent heat source is needed by adopting steam or domestic hot water for reheating, so that the heat source is not feasible for most civil buildings in summer.
The heat source is not allowed to be used due to cold and heat offset, but if the heat source is reasonable, the reheat type system can more easily adjust air supply parameters than a dew point air supply system. Therefore, how to reheat dew-point air by using cooling water as a heat source is to design a reasonable air conditioning system to reduce energy consumption.
The utility model has the following contents:
in order to make up for the problems in the prior art, the utility model aims to provide a reheat air conditioner using cooling water condensation heat, which can ensure the control of relative humidity compared with a dew point air supply system without additional energy consumption; the purposes of reheating air by using cooling water and cooling water by using condensed water are achieved.
The technical scheme of the utility model as follows:
the reheating air conditioner utilizing the condensation heat of cooling water comprises a cooling tower, a combined air conditioning unit and a water chilling unit, wherein the cooling tower is connected with the water chilling unit through a cooling water supply pipe and a cooling water return pipe;
one end of the branch pipe II is communicated with a cooling water supply pipe, the other end of the branch pipe II is communicated with a hot water return pipe in parallel, and a water outlet pipe of the reheating section exchanger is communicated with the hot water return pipe;
when the air conditioner operates in summer, the first valve and the third valve are opened, the second valve and the fourth valve are closed, and cooling water is used for reheating the air; when the air conditioner runs in winter, the first valve and the third valve are closed, the second valve and the fourth valve are opened, and hot water for the air conditioner is used for heating air.
The reheating air conditioner utilizing the condensation heat of the cooling water is characterized in that a condensed water collecting disc is installed at the bottom of the surface cooling section, a condensed water collector is arranged on the second branch pipe, and a water inlet of the condensed water collector is communicated with the bottom of the condensed water collecting disc.
The reheat air conditioner utilizing the condensation heat of the cooling water is characterized in that the condensation water collector is horizontally arranged on the second branch pipe and is positioned on the left side of the third valve.
The reheating air conditioner utilizing the condensation heat of the cooling water is characterized in that a fifth valve and a sixth valve are respectively arranged on the cooling water supply pipe and the cooling water return pipe close to the cooling tower, and a cooling water pump is arranged on the cooling water supply pipe.
The reheating air conditioner utilizing the condensation heat of the cooling water is characterized in that the reheating section heat exchanger is a coil heat exchanger.
The reheating air conditioner utilizing the condensation heat of the cooling water is characterized in that the combined air conditioning unit consists of a mixing section, an intermediate overhaul section, a surface cooling section, a reheating section, an intermediate overhaul section and a fan section.
The utility model has the advantages that:
1. compared with a dew point air supply system, the cooling water reheating system of the utility model can ensure the control of relative humidity without additional energy consumption;
2. the utility model has obvious energy-saving effect, and can save 6-25% of energy consumption compared with the conventional reheating method;
3. the utility model not only realizes the purpose of reheating air by using cooling water, but also realizes the purpose of recovering the cooling water amount of condensation to cool the cooling water;
4. the utility model needs to heat the air when operating in winter; the summer reheating section and the winter heating section can share a hot coil pipe so as to reduce the initial investment of equipment;
5. the utility model is suitable for a relative humidity requires higher air conditioner place or humiture accuracy control place, has extensive application prospect.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
A reheat air conditioner using condensation heat of cooling water comprises a cooling tower 1, a combined air conditioning unit 2 and a water chilling unit 3, wherein the cooling tower 1 is connected with the water chilling unit 2 through a cooling water supply pipe 4 and a cooling water return pipe 5, the combined air conditioning unit 2 is provided with a reheat section 2-4 behind a surface cooling section 2-3, a reheat section heat exchanger 22 is a coil type heat exchanger, a water inlet pipe 6 of the reheat section 2-2 is provided with a heat exchanger 22, the water outlet pipe 7 is respectively connected with a hot water supply pipe 8 and a hot water return pipe 9 of an air conditioner, the water outlet pipe 7 of the heat exchanger 22 is provided with a temperature control valve 10, the heat exchanger further comprises a first branch pipe 11 and a second branch pipe 12, one end of the first branch pipe 11 is communicated with the cooling water return pipe 5, the other end of the first branch pipe 11 is communicated with the hot water supply pipe 8 in parallel, and is communicated with a water inlet pipe 6 of the reheating section exchanger, and the first branch pipe 11 and the hot water supply pipe 8 are;
one end of the second branch pipe 12 is communicated with the cooling water supply pipe 4, the other end of the second branch pipe is connected with the hot water return pipe 9 in parallel and communicated with the water outlet pipe 7 of the reheating section exchanger, and a valve III 15 and a valve IV 16 are respectively arranged on the second branch pipe 12 and the hot water return pipe 9;
in the use process, the utility model discloses need heat the air when the operation in winter, so summer reheating section can with winter heat exchanger 22 of section sharing reheating section to reduce equipment initial investment: when the air conditioner runs in summer, the first valve 13 and the third valve 15 are opened, the second valve 14 and the fourth valve 16 are closed, and cooling water is used for reheating the air; when the air conditioner runs in winter, the first valve 13 and the third valve 15 are closed, the second valve 14 and the fourth valve 16 are opened, the air is heated by using hot water for the air conditioner, the temperature control valve 10 is installed on the water outlet pipe 7 of the heat exchanger 22, and water flow is controlled according to temperature feedback.
The utility model discloses increased air conditioner condensate cooling capacity recovery unit, air conditioner condensate temperature is at 10-15 ℃ usually, can regard as the cold source to cool down to the cooling water: a condensed water collecting tray 17 is arranged at the bottom of the surface cooling section 2-1, a condensed water collector 18 is arranged on the second branch pipe 12, and a water inlet of the condensed water collector 18 is communicated with the bottom of the condensed water collecting tray 17. The working principle is as follows: the condensed water in the condensed water accumulation plate 17 flows into the condensed water collector 18 through a certain gradient effect and exchanges heat with the cooling water with the temperature of 32 ℃ flowing out of the reheating section exchanger 22, so that the purpose of cooling the cooling water is achieved, the cooling water with the temperature lower than 32 ℃ after being cooled is mixed with the cooling water returned by the cooling tower 1 and flows into the water chilling unit 3, the purpose of reheating air by using the cooling water is achieved, and the purpose of cooling the cooling water by using the cold energy of the condensed water is also achieved.
And the condensed water collector 18 is horizontally arranged on the second branch pipe 12 and is positioned at the left side of the third valve 15.
And a fifth valve 19 and a sixth valve 20 are respectively arranged on the cooling water supply pipe 4 and the cooling water return pipe 5 close to the cooling tower, and a cooling water pump 21 is arranged on the cooling water supply pipe 4.
The combined air conditioning unit sequentially comprises a mixing section 2-1, a middle maintenance section 2-2, a surface cooling section 2-3, a reheating section 2-4, a middle maintenance section 2-5 and a fan section 2-6 from left to right, and is a conventional assembly structure of the combined air conditioning unit.
If the utility model is used for the open circulating cooling water system, the arrangement position of the combined air conditioning unit (AHU) is lower than the position of the cooling tower; if the combined type air conditioning unit is used for a closed type circulating cooling water system, the arrangement position of the combined type air conditioning unit and a cooling tower have no strict requirement.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. A reheating air conditioner using condensation heat of cooling water comprises a cooling tower, a combined air conditioner unit and a water chilling unit, wherein the cooling tower and the water chilling unit are connected through a cooling water supply pipe and a cooling water return pipe;
one end of the branch pipe II is communicated with a cooling water supply pipe, the other end of the branch pipe II is communicated with a hot water return pipe in parallel, and a water outlet pipe of the reheating section exchanger is communicated with the hot water return pipe;
when the air conditioner operates in summer, the first valve and the third valve are opened, the second valve and the fourth valve are closed, and cooling water is used for reheating the air; when the air conditioner runs in winter, the first valve and the third valve are closed, the second valve and the fourth valve are opened, and hot water for the air conditioner is used for heating air.
2. A reheat air conditioner using condensing heat of cooling water as set forth in claim 1, wherein a condensed water tray is installed at the bottom of said surface cooling section, a condensed water collector is installed on the second branch pipe, and a water inlet of the condensed water collector is communicated with the bottom of the condensed water tray.
3. A reheat air conditioner using condensation heat of cooling water as set forth in claim 2, wherein said condensate collector is horizontally installed on the second branch pipe and is located at a left side of the third valve.
4. A reheat air conditioner using condensation heat of cooling water as set forth in claim 1, wherein said cooling water supply pipe and said cooling water return pipe are provided with a fifth valve and a sixth valve respectively near the cooling tower, and a cooling water pump is provided on the cooling water supply pipe.
5. A reheat air conditioner using condensation heat of cooling water as set forth in claim 1, wherein said reheat section exchanger is a coil type heat exchanger.
6. A reheat air conditioner using condensation heat of cooling water as set forth in claim 1, wherein said combined air conditioning unit is composed of a mixing section, an intermediate overhaul section, a surface cooling section, a reheat section, an intermediate overhaul section, and a fan section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920454592.2U CN209910089U (en) | 2019-04-04 | 2019-04-04 | Reheating air conditioner using condensation heat of cooling water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920454592.2U CN209910089U (en) | 2019-04-04 | 2019-04-04 | Reheating air conditioner using condensation heat of cooling water |
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| Publication Number | Publication Date |
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| CN209910089U true CN209910089U (en) | 2020-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920454592.2U Expired - Fee Related CN209910089U (en) | 2019-04-04 | 2019-04-04 | Reheating air conditioner using condensation heat of cooling water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112524783A (en) * | 2020-12-24 | 2021-03-19 | 江苏盛世华为工程技术有限公司 | Air conditioner cooling water heat recovery system |
-
2019
- 2019-04-04 CN CN201920454592.2U patent/CN209910089U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112524783A (en) * | 2020-12-24 | 2021-03-19 | 江苏盛世华为工程技术有限公司 | Air conditioner cooling water heat recovery system |
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| CF01 | Termination of patent right due to non-payment of annual fee |