空气冷却

The effect of the inlet parameters of air, air mass flow rate and spray water rate on the performance of closed cooling tower is discussed in the paper. A mathematical model for evaluating heat and mass transfer performance of closed cooling tower is set up. The analytical solution of differential equations is derived.

目的 分析闭式冷却塔内各参数，即空气焓值、含湿量、冷却水温等的分布情况；探讨空气入口参数、空气质量流量、喷淋水量对闭式冷却塔冷却性能的影响规律。

Thermal comfort and indoor air quality requirements are presented; the contents cover the following topics:(1) Concept of air-conditioning,(2) Thermal principle,(3) Psychrometry and wetted-surface heat transfer,(4) Heating and cooling-load calculations,(5) Air-conditioning systems,(6) Fan and duct system,(7) Pumps and piping,(8) Cooling and dehumidifying coils,(9) Air-conditioning controls,(10) Absorption refrigeration,(11) Heat pump,(12) Cooling towers and evaporative condensers.

课程大纲本课程将介绍空调工程与系统设计，藉由湿空气线图讨论空气调节之过程，分析人体舒适与空气品质之需求，及各种空调设备系统之设计，内容涵盖如下：(1)空调的概念(2)热原理(3)湿空气与湿表面热传(4)加热与冷却负荷估算(5)空调系统(6)风扇与风管系统(7)泵与管路配置(8)冷却与除湿盘管(9)空调自动控制(10)吸收式冷冻系统(11)热泵(12)冷却水塔与蒸发式冷却。

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--- Method and apparatus for abstracting water from air wherein in a first phase of a recurring cycle a stream of cool, moist air from the atmosphere first cools a first heat storage condenser (1) and then humidifies a hygroscopic medium (14); in a second phase a stream of warm air additionally heated by solar radiation expels moisture from the hygroscopic medium and carries the moisture into said first heat storage condenser (1) where it condenses, releasing condensation heat, and drains away; in a third phase another stream of cool, moist air from the atmosphere first cools a second heat storage condenser (2) and then rehumidifies the hygroscopic medium, and in a fourth phase another stream of warm air heated by solar energy again expels the moisture from the hygroscopic medium and carries the moisture to said second heat storage condenser where it condenses and drains away, and wherein the warm air streams of the second and fourth phases, are preheated using the heat of condensation picked up by the said second heat storage condenser (2) in the fourth phase and the heat of condensation picked up by said first heat storage condenser (1) in the second phase, respectively, before being additionally heated by solar radiation and being used to expel moisture from the hygroscopic medium.

摘要---方法和仪器取水，从空气，其中在第一阶段的周期性循环流冷静，潮湿空气从大气中的第一冷却的第一个蓄热冷凝器（ 1 ），然后humidifies一吸湿中等（ 14 ）；在第二阶段流的暖空气此外，激烈的太阳辐射驱逐水分从吸湿中等，并进行水分成表示，第一蓄热冷凝器（ 1 ）凡它凝结，释放出凝结换热，及雨水渠的距离；在第三阶段另一流的冷静，潮湿空气从大气中冷却，第一第二蓄热冷凝器（ 2 ），然后rehumidifies该吸湿中等，而在第四个阶段的另一流的暖空气加热太阳能再次驱逐水分从中期和吸湿性带有水分说，第二蓄热冷凝器而凝结及排水渠远离，和其中的暖空气流，第二和第四阶段，预热用热凝结回升，由说，第二蓄热冷凝器（ 2 ）在第四个阶段和热凝结回升，由说，第一蓄热冷凝器（ 1 ）在第二个阶段，分别之前，此外激烈的太阳辐射和被用来驱逐水分从吸湿中等。

Introduces the significance of application of all-air air conditioning system and analyzes the two problems about energy- saving and purifying of using all outdoor-air in all-air air conditioning system .

介绍了应用全空气空调系统的意义，分析了全空气空调系统中全新风运行方式所带来的节能与净化的两大问题；认为全空气空调系统是较好的空调系统，将蒸发冷却技术、热回收技术、变风量控制技术相结合的蒸发冷却新风空调集成系统具有广阔的应用前景。

Of liquid refrigerant through the expansion valve in theMagnetic Pumps low pressure evaporator coil inside the evaporator refrigerant evaporates to absorb large But will the amount of heat flowing through the outside air cooling refrigerant compressor pressurized gasification then no longer be transmitted to the valve after the water flows through the three heat exchangers.

液态冷媒经膨胀阀在低压的蒸发盘管内蒸发，冷媒蒸发时吸收大量热能而将外间流经之空气冷却，冷媒气化后又再被压缩机加压后流经三通阀门输送至池水热交换器。

Of liquid refrigerant through the expansion valve in the Magnetic Pumps low pressure evaporator coil inside the evaporator, refrigerant evaporates to absorb large But will the amount of heat flowing through the outside air cooling, refrigerant compressor pressurized gasification then no longer be transmitted to the valve after the water flows through the three heat exchangers.

液态冷媒经膨胀阀在低压的蒸发盘管内蒸发，冷媒蒸发时吸收大量热能而将外间流经之空气冷却，冷媒气化后又再被压缩机加压后流经三通阀门输送至池水热交换器。

Because the heated air used as cooling medium for fast cooling down,it has several strongpoints,for example,its radiative coefficient is low,it can reduce the heat impact to the metal parts of steam turbine when it is heated to a suitable temperature,this method is easy to connect to a system and convenient to operate,and so on.

通过分析比较以上几种快速冷却方式，空气快速冷却以加热后的空气作为冷却介质，由于具有低的放热系数，加热到合适的温度可减少对汽轮机金属部件的热冲击，连接系统简单，操作简便等优点。

A period of time, these groups do not need to re-fuel stored in the water, but was transferred to the steel cover the bucket, where dry, filled into the inert gas, and then be closed. The sleeve was finally loaded huge concrete storage barrels, relying on natural air circulation away the tiny fuel heat release.

如果仅靠空气冷却，核燃料外包围的金属壁会融化甚至燃烧，因此移出的核燃料往往都被保存在由钢筋混凝土建造的乏燃料贮存池中，并由非常纯净的冷却水负责降温。

The exhaust ducting is cooled by four air inlets around the jet pipe.

排气管道被四个围绕喷射管道的进口空气冷却。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。