CN104236325A - Semi-closed space-based air conditioner cooling tower system - Google Patents

Semi-closed space-based air conditioner cooling tower system Download PDF

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CN104236325A
CN104236325A CN201410511766.6A CN201410511766A CN104236325A CN 104236325 A CN104236325 A CN 104236325A CN 201410511766 A CN201410511766 A CN 201410511766A CN 104236325 A CN104236325 A CN 104236325A
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cooling tower
semi
closed space
air
cooling
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CN104236325B (en
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李昌
姜昌伟
邓亚宏
曾军勇
伍学智
时兴洪
罗世闻
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Changsha University of Science and Technology
Second Construction Engineering Co Ltd of China Construction Third Engineering Division
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Changsha University of Science and Technology
Second Construction Engineering Co Ltd of China Construction Third Engineering Division
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Abstract

本发明公开了一种基于半闭式空间的空调冷却塔系统,包括半闭式空间和多组冷却塔组,所述半闭式空间设有向半闭式空间送入空气的竖直风井,所述多组冷却塔组沿半闭式空间内部周边设置,各冷却塔组中的冷却塔均设有用于抽取半闭式空间内空气的风机以及用于排出热风的冷却塔排风筒,各冷却塔组均设有向所述半闭式空间外部统一排放热风的冷却塔排风箱,各冷却塔组的冷却塔排风筒均与所述冷却塔排风箱连通。该基于半闭式空间的空调冷却塔系统具有可避免冷却塔进排风短路,能提高冷却塔运行效率的优点。

The invention discloses an air-conditioning cooling tower system based on a semi-closed space, which includes a semi-closed space and multiple groups of cooling towers, and the semi-closed space is provided with a vertical air shaft for sending air into the semi-closed space , the plurality of cooling tower groups are arranged along the inner periphery of the semi-closed space, and the cooling towers in each cooling tower group are provided with fans for extracting air in the semi-closed space and cooling tower exhaust ducts for discharging hot air, Each cooling tower group is equipped with a cooling tower exhaust box for uniformly discharging hot air to the outside of the semi-closed space, and the cooling tower exhaust ducts of each cooling tower group are connected with the cooling tower exhaust box. The air-conditioning cooling tower system based on the semi-closed space has the advantages of avoiding the short circuit of the air intake and exhaust of the cooling tower and improving the operating efficiency of the cooling tower.

Description

基于半闭式空间的空调冷却塔系统Air-conditioning cooling tower system based on semi-closed space

技术领域 technical field

本发明主要涉及暖通空调领域,尤其涉及一种基于半闭式空间的空调冷却塔系统。 The invention mainly relates to the field of heating, ventilating and air-conditioning, in particular to an air-conditioning cooling tower system based on a semi-closed space.

背景技术 Background technique

冷却塔是暖通空调系统的重要组成部分,其作用是将携带余热的循环水在塔内与空气进行热交换,把水的热量传输给空气并散入大气,对循环水进行降温。冷却塔运行性能的好坏直接影响着空调系统制冷制热的效果。 The cooling tower is an important part of the HVAC system. Its function is to exchange heat between the circulating water carrying waste heat and the air in the tower, transfer the heat of the water to the air and disperse it into the atmosphere, and cool down the circulating water. The operating performance of the cooling tower directly affects the cooling and heating effect of the air conditioning system.

影响冷却塔运行性能的因素包括空气湿球温度、空气流量、水量、冷却塔的布置等,其中冷却塔的布置位置与方式是影响冷却塔运行性能好坏非常关键的因素之一。冷却塔一旦布置不合理,将导致湿热空气返混,从而严重影响着冷却塔运行性能。所以,为了降低冷却塔湿热空气返混,冷却塔通常放置通风良好的室外,如楼顶或地面,并要求排风口、进风口通畅。 Factors that affect the operation performance of cooling towers include air wet bulb temperature, air flow, water volume, cooling tower layout, etc. Among them, the location and method of cooling tower layout are one of the key factors that affect the performance of cooling towers. Once the cooling tower is unreasonably arranged, it will lead to back mixing of hot and humid air, which will seriously affect the operating performance of the cooling tower. Therefore, in order to reduce the back-mixing of hot and humid air in cooling towers, cooling towers are usually placed outdoors with good ventilation, such as the roof or the ground, and the air outlets and air inlets are required to be unobstructed.

然而,冷却塔放置于楼顶或地面,将产生很大噪音同时影响建筑物整体美观。近年来,人们对城市环境日益关注,冷却塔越来越多地被置于专门的靠外墙的制冷机房或建筑转换层等相对较封闭的空间内;另外随着单体建筑物建筑面积的增大,所需冷却塔的数量越来越多。当大量的冷却塔被布置在一个半闭式空间内,就会造成以下几个问题:1、空气与循环水进行热量交换产生的湿热空气不能很好地排出半闭式空间,湿热空气返混率较高;2、冷却塔群运行相互干扰、冷却塔进排风短路、排风不畅;3、靠近半闭式空间进风口的冷却塔进风量过大,而居于半闭式空间中部的冷却塔进风量过小,冷却塔风机选型难以确定,冷却塔运行效率低。这些问题造成冷却塔不能在额定工况下高效运行,从而直接影响着整个空调系统制冷制热的效果。 However, if the cooling tower is placed on the roof or on the ground, it will generate a lot of noise and affect the overall appearance of the building. In recent years, people have paid more and more attention to the urban environment, and more and more cooling towers are placed in relatively closed spaces such as special refrigeration rooms near the outer wall or building transfer floors; in addition, with the increase in the construction area of single buildings Increasingly, the number of cooling towers required is increasing. When a large number of cooling towers are arranged in a semi-closed space, the following problems will be caused: 1. The hot and humid air generated by the heat exchange between air and circulating water cannot be discharged from the semi-closed space well, and the back-mixing rate of hot and humid air 2. The operation of the cooling tower group interferes with each other, the air intake and exhaust of the cooling tower are short-circuited, and the exhaust air is not smooth; 3. The air intake of the cooling tower near the air inlet of the semi-closed space is too large, and the cooling tower located in the middle of the semi-closed space The air intake volume of the tower is too small, it is difficult to determine the type of cooling tower fan, and the operating efficiency of the cooling tower is low. These problems make the cooling tower unable to operate efficiently under rated working conditions, which directly affects the cooling and heating effect of the entire air conditioning system.

目前,室外冷却塔布置单纯依靠工程经验来进行,并取得很好的冷却效果。但对于半闭式空间内冷却塔群的布置如果单纯依靠工程经验来进行布置以及采用室外冷却塔群布置设计方法,将会使部分冷却塔运行性能恶化,从而影响整个空调性能运行效果,因此必须寻找另外一种半闭式空间内冷却塔群布置方案以及提高冷却塔群运行性能的优化方案。 At present, the layout of outdoor cooling towers is based solely on engineering experience, and a good cooling effect has been achieved. However, if the layout of the cooling tower group in the semi-closed space is based solely on engineering experience and the layout design method of the outdoor cooling tower group is used, the operating performance of some cooling towers will deteriorate, thereby affecting the performance of the entire air conditioner. Therefore, it is necessary Find another arrangement scheme of cooling towers in a semi-closed space and an optimization scheme to improve the operation performance of cooling towers.

发明内容 Contents of the invention

本发明要解决的技术问题是克服现有技术的不足,提供一种可避免冷却塔进排风短路,能提高冷却塔运行效率的基于半闭式空间的空调冷却塔系统。 The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and provide an air-conditioning cooling tower system based on a semi-closed space that can avoid the short circuit of the cooling tower's air intake and exhaust, and can improve the operating efficiency of the cooling tower.

为解决上述技术问题,本发明采用以下技术方案: In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

一种基于半闭式空间的空调冷却塔系统,包括半闭式空间和多组冷却塔组,所述半闭式空间设有向半闭式空间送入空气的竖直风井,所述多组冷却塔组沿半闭式空间内部周边设置,各冷却塔组中的冷却塔均设有用于抽取半闭式空间内空气的风机以及用于排出热风的冷却塔排风筒,各冷却塔组均设有向所述半闭式空间外部统一排放热风的冷却塔排风箱,各冷却塔组的冷却塔排风筒均与所述冷却塔排风箱连通。 An air-conditioning cooling tower system based on a semi-closed space, including a semi-closed space and multiple groups of cooling towers, the semi-closed space is provided with a vertical air shaft that sends air into the semi-closed space, and the multiple Groups of cooling towers are set along the inner periphery of the semi-closed space. The cooling towers in each cooling tower group are equipped with fans for extracting air from the semi-closed space and cooling tower exhaust ducts for discharging hot air. Each cooling tower group Each is provided with a cooling tower exhaust box that uniformly discharges hot air to the outside of the semi-closed space, and the cooling tower exhaust ducts of each cooling tower group are connected with the cooling tower exhaust box.

作为上述技术方案的进一步改进: As a further improvement of the above technical solution:

所述冷却塔排风箱内设有冷却塔排风消声器。 A cooling tower exhaust muffler is arranged in the cooling tower exhaust box.

所述冷却塔设有冷却塔除雾器。 The cooling tower is provided with a cooling tower demister.

所述冷却塔除雾器连接热泵冷水机组的热水源。 The cooling tower demister is connected to the hot water source of the heat pump chiller.

所述半闭式空间内设有供水总管和回水总管,冷却塔设有冷却塔供水管和冷却塔回水管,各冷却塔的冷却塔供水管并联至供水总管,各冷却塔的冷却塔回水管并联至回水总管。 The semi-closed space is provided with a water supply main pipe and a return water main pipe. The cooling tower is provided with a cooling tower water supply pipe and a cooling tower return water pipe. The cooling tower water supply pipes of each cooling tower are connected to the water supply main pipe in parallel. The cooling tower return pipes of each cooling tower The water pipe is connected in parallel to the return water main.

所述竖直风井设有四个,四个竖直风井分设于半闭式空间的四个角部。 There are four vertical air shafts, and the four vertical air shafts are respectively arranged at the four corners of the semi-closed space.

与现有技术相比,本发明的优点在于: Compared with the prior art, the present invention has the advantages of:

本发明的基于半闭式空间的空调冷却塔系统,在半闭式空间设有向半闭式空间送入空气的竖直风井,可以使外界空气流入半闭式空间之前进行冷却、降低温度,增加空气与循环水在冷却塔内换热的温差,提高冷却塔运行效率;配设有冷却塔排风筒和冷却塔排风箱,用于将热交换后产生的湿热空气统一集中排放,确保湿热空气能够顺利排出半闭式空间,避免湿热空气回流到半闭式空间后进入冷却塔内,避免冷却塔进排风短路,同时也避免了冷却塔群的运行形成相互干扰,进一步提高冷却塔运行效率。 The air-conditioning cooling tower system based on the semi-closed space of the present invention is provided with a vertical air shaft to send air into the semi-closed space in the semi-closed space, so that the outside air can be cooled and lowered before entering the semi-closed space , increase the temperature difference between the heat exchange between air and circulating water in the cooling tower, and improve the operating efficiency of the cooling tower; it is equipped with a cooling tower exhaust duct and a cooling tower exhaust box, which are used to uniformly discharge the hot and humid air generated after heat exchange. Ensure that the hot and humid air can be smoothly discharged from the semi-closed space, avoid the hot and humid air flowing back into the semi-closed space and then enter the cooling tower, avoid the short circuit of the cooling tower's intake and exhaust air, and also avoid the mutual interference of the operation of the cooling tower group to further improve cooling. tower operating efficiency.

附图说明 Description of drawings

图1是本发明基于半闭式空间的空调冷却塔系统的结构示意图。 Fig. 1 is a schematic structural view of the air-conditioning cooling tower system based on the semi-closed space of the present invention.

图中各标号表示: Each label in the figure means:

1、半闭式空间;11、竖直风井;2、冷却塔;21、冷却塔排风筒;22、冷却塔排风箱;23、冷却塔排风消声器;24、冷却塔除雾器;3、供水总管;4、回水总管。 1. Semi-closed space; 11. Vertical air shaft; 2. Cooling tower; 21. Cooling tower exhaust duct; 22. Cooling tower exhaust box; 23. Cooling tower exhaust muffler; 24. Cooling tower demister ; 3. Water supply main pipe; 4. Return water main pipe.

具体实施方式 Detailed ways

以下将结合说明书附图和具体实施例对本发明做进一步详细说明。 The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

图1示出了本发明的基于半闭式空间的空调冷却塔系统实施例,该空调冷却塔系统包括半闭式空间1和多组冷却塔组,半闭式空间1设有向半闭式空间1送入空气的竖直风井11,多组冷却塔组沿半闭式空间1内部周边设置,各冷却塔组中的冷却塔2均设有用于抽取半闭式空间1内空气的风机以及用于排出热风的冷却塔排风筒21,各冷却塔组均设有向半闭式空间1外部统一排放热风的冷却塔排风箱22,各冷却塔组的冷却塔排风筒21均与冷却塔排风箱22连通,半闭式空间1内设有供水总管3和回水总管4,冷却塔2设有冷却塔供水管和冷却塔回水管,各冷却塔2的冷却塔供水管并联至供水总管3,各冷却塔2的冷却塔回水管并联至回水总管4。本发明的基于半闭式空间的空调冷却塔系统,在半闭式空间1设有向半闭式空间1送入空气的竖直风井11,可以使外界空气流入半闭式空间1之前进行冷却、降低温度,增加空气与循环水在冷却塔2内换热的温差,提高冷却塔2运行效率;配设有冷却塔排风筒21和冷却塔排风箱22,用于将热交换后产生的湿热空气统一集中排放,确保湿热空气能够顺利排出半闭式空间1,避免湿热空气回流到半闭式空间1后进入冷却塔2内,避免冷却塔2进排风短路,同时也避免了冷却塔群的运行形成相互干扰,进一步提高冷却塔2运行效率。 Fig. 1 shows the embodiment of the air-conditioning cooling tower system based on semi-closed space of the present invention, this air-conditioning cooling tower system comprises semi-closed space 1 and multiple groups of cooling tower groups, semi-closed space 1 is provided with semi-closed The vertical air shaft 11 that sends air into the space 1, and multiple groups of cooling towers are arranged along the inner periphery of the semi-closed space 1, and the cooling towers 2 in each cooling tower group are equipped with fans for extracting the air in the semi-closed space 1 And the cooling tower exhaust duct 21 that is used to discharge hot air, each cooling tower group is all provided with the cooling tower exhaust box 22 that discharges hot air uniformly to the outside of the semi-closed space 1, and the cooling tower exhaust duct 21 of each cooling tower group It is connected with the cooling tower exhaust box 22. The semi-closed space 1 is provided with a water supply main pipe 3 and a return water main pipe 4. The cooling tower 2 is provided with a cooling tower water supply pipe and a cooling tower return water pipe. The cooling tower water supply pipes of each cooling tower 2 Parallel to the water supply main pipe 3, and the cooling tower return pipes of each cooling tower 2 are connected to the return water main pipe 4 in parallel. The air-conditioning cooling tower system based on the semi-closed space of the present invention is provided with a vertical air shaft 11 that sends air into the semi-closed space 1 in the semi-closed space 1, so that outside air can flow into the semi-closed space 1 before Cooling, lowering the temperature, increasing the temperature difference between the heat exchange between air and circulating water in the cooling tower 2, and improving the operating efficiency of the cooling tower 2; equipped with a cooling tower exhaust duct 21 and a cooling tower exhaust box 22, which are used to transfer heat The hot and humid air generated is uniformly discharged to ensure that the hot and humid air can be smoothly discharged from the semi-closed space 1, avoiding the return of the hot and humid air to the semi-closed space 1 and then entering the cooling tower 2, avoiding the short circuit of the cooling tower 2, and also avoiding The operation of the cooling tower group forms mutual interference, further improving the operating efficiency of the cooling tower 2 .

本实施例中,冷却塔排风箱22内设有冷却塔排风消声器23,降低了湿热空气在冷却塔排风箱22内流动所产生的噪音。冷却塔2设有冷却塔除雾器24,冷却塔除雾器24连接热泵冷水机组的热水源,在环境温度较低时启动冷却塔除雾器24加热湿热空气,可避免冷却塔排风箱22出口产生白雾。 In this embodiment, a cooling tower exhaust muffler 23 is provided inside the cooling tower exhaust box 22 to reduce the noise generated by the hot and humid air flowing in the cooling tower exhaust box 22 . The cooling tower 2 is equipped with a cooling tower demister 24, which is connected to the hot water source of the heat pump chiller, and when the ambient temperature is low, the cooling tower demister 24 is started to heat the hot and humid air, which can avoid the cooling tower exhaust box 22 exits produce white mist.

本实施例中,竖直风井11设有四个,四个竖直风井11分设于半闭式空间1的四个角部,可使送入半闭式空间1的空气分布更均匀,使各冷却塔组的运行效率均能在额定工况下高效运行。 In this embodiment, four vertical air shafts 11 are provided, and the four vertical air shafts 11 are respectively arranged at the four corners of the semi-closed space 1, so that the air sent into the semi-closed space 1 can be distributed more evenly. The operating efficiency of each cooling tower group can be operated efficiently under rated working conditions.

虽然本发明已以较佳实施例揭示如上,然而并非用以限定本发明。任何熟悉本领域的技术人员,在不脱离本发明技术方案范围的情况下,都可利用上述揭示的技术内容对本发明技术方案做出许多可能的变动和修饰,或修改为等同变化的等效实施例。因此,凡是未脱离本发明技术方案的内容,依据本发明技术实质对以上实施例所做的任何简单修改、等同变化及修饰,均应落在本发明技术方案保护的范围内。  Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person familiar with the art, without departing from the scope of the technical solution of the present invention, can use the technical content disclosed above to make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent implementation of equivalent changes example. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention. the

Claims (7)

1.一种基于半闭式空间的空调冷却塔系统,包括半闭式空间(1)和多组冷却塔组,其特征在于:所述半闭式空间(1)设有向半闭式空间(1)送入空气的竖直风井(11),所述多组冷却塔组沿半闭式空间(1)内部周边设置,各冷却塔组中的冷却塔(2)均设有用于抽取半闭式空间(1)内空气的风机以及用于排出热风的冷却塔排风筒(21),各冷却塔组均设有向所述半闭式空间(1)外部统一排放热风的冷却塔排风箱(22),各冷却塔组的冷却塔排风筒(21)均与所述冷却塔排风箱(22)连通。 1. An air-conditioning cooling tower system based on a semi-closed space, including a semi-closed space (1) and multiple sets of cooling tower groups, characterized in that: the semi-closed space (1) is provided with a semi-closed space (1) Vertical air shafts (11) for feeding air, the multiple groups of cooling towers are arranged along the inner periphery of the semi-closed space (1), and the cooling towers (2) in each cooling tower group are equipped for extracting A fan for the air in the semi-closed space (1) and a cooling tower exhaust duct (21) for discharging hot air, and each cooling tower group is equipped with a cooling tower that uniformly discharges hot air to the outside of the semi-closed space (1) The exhaust box (22) and the cooling tower exhaust tube (21) of each cooling tower group are all connected with the cooling tower exhaust box (22). 2.根据权利要求1所述的基于半闭式空间的空调冷却塔系统,其特征在于:所述冷却塔排风箱(22)内设有冷却塔排风消声器(23)。 2. The air-conditioning cooling tower system based on a semi-closed space according to claim 1, characterized in that: the cooling tower exhaust box (22) is provided with a cooling tower exhaust muffler (23). 3.根据权利要求1所述的基于半闭式空间的空调冷却塔系统,其特征在于:所述冷却塔(2)设有冷却塔除雾器(24)。 3. The air-conditioning cooling tower system based on a semi-closed space according to claim 1, characterized in that: the cooling tower (2) is provided with a cooling tower demister (24). 4.根据权利要求3所述的基于半闭式空间的空调冷却塔系统,其特征在于:所述冷却塔除雾器(24)连接热泵冷水机组的热水源。 4. The air-conditioning cooling tower system based on a semi-closed space according to claim 3, characterized in that: the cooling tower demister (24) is connected to a hot water source of a heat pump chiller. 5.根据权利要求1至4中任一项所述的基于半闭式空间的空调冷却塔系统,其特征在于:所述半闭式空间(1)内设有供水总管(3)和回水总管(4),冷却塔(2)设有冷却塔供水管和冷却塔回水管,各冷却塔(2)的冷却塔供水管并联至供水总管(3),各冷却塔(2)的冷却塔回水管并联至回水总管(4)。 5. The air-conditioning cooling tower system based on a semi-closed space according to any one of claims 1 to 4, characterized in that: the semi-closed space (1) is provided with a water supply main pipe (3) and a return water The main pipe (4), the cooling tower (2) is provided with a cooling tower water supply pipe and a cooling tower return pipe, and the cooling tower water supply pipes of each cooling tower (2) are connected in parallel to the water supply main pipe (3), and the cooling towers of each cooling tower (2) The water return pipe is connected in parallel to the main water return pipe (4). 6.根据权利要求1至4中任一项所述的基于半闭式空间的空调冷却塔系统,其特征在于:所述竖直风井(11)设有四个,四个竖直风井(11)分设于半闭式空间(1)的四个角部。 6. The air-conditioning cooling tower system based on a semi-closed space according to any one of claims 1 to 4, characterized in that: the vertical air shaft (11) is provided with four, four vertical air shafts (11) are separately arranged at the four corners of the semi-closed space (1). 7.根据权利要求5所述的基于半闭式空间的空调冷却塔系统,其特征在于:所述竖直风井(11)设有四个,四个竖直风井(11)分设于半闭式空间(1)的四个角部。 7. The air-conditioning cooling tower system based on a semi-closed space according to claim 5, characterized in that: there are four vertical air shafts (11), and the four vertical air shafts (11) are arranged in half The four corners of the closed space (1).
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