- 更多网络例句与蒸发器相关的网络例句 [注:此内容来源于网络,仅供参考]
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The air conditioner also includes an auxiliary evaporator mounted at the outlet of the expand device and connected with the outlet; and a branch pipe mounted between the inlet of the auxiliary evaporator and the condensator and connected with them, and will open only when the evaporate temperature is lower than a predetermined temperature.
一种排热风的空气调节器,包括一压缩机;一四向阀;一冷凝器;一膨胀装置;一蒸发器;以及一蓄热器,它还包括一安放在膨胀装置的出口侧并彼此相连通的辅助蒸发器;以及一安装在辅助蒸发器的入口和冷凝器之间并与它们相连通的支路管,只有当蒸发温度低于预定温度时,支路管才开通。
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The thesis can be divided into five parts as follows: First, the structural characteristics of finned-pipe evaporator are analyzed. After selecting suitable microelement controller, the heat-transfer and mass-transfer processes are analyzed for every microelement under the conditions of dryness, wetness and frostiness. Based on previous equations, some parameters of frostiness are confirmed and the frost-growing model is set up under frost condition. Some hypotheses are postulated and with the help of the equation of mass-conservation, energy-conservation and momentum-conservation, the evaporation model which fits in the dynamic simulation is built, which set a solid foundation for system simulation. Second, the starting and stopping behaviors under disturbed condition are analyzed and calculated by using the dynamic concentrative parameter model, which gives some advice to better prescribe refrigeration system and set theoretic foundation for carrying out automatic control of refrigeration system. Third, the normal running process is analyzed and calculated by means of rational matching theory, which gives some advice on how to better understand the parameter change under steady state and the affection of inlet-parameter on evaporator. Fourth, the simulation software with dynamic characteristic is designed, which can be applied to calculate thernio-parameter of cryogen, air humidity and frost thickness under different initial and boundary conditions, and to carry out dynamic simulation under conditions of dryness, wetness and frostiness, at the same time, to achieve detection and simulation at any stage from starting to stopping.
本文的主要内容如下:1对翅片管蒸发器结构特点进行分析,选取适当的微元控制体,就干、湿和霜工况下对每个微元分别进行传热传质分析,基于经验关系式确定霜的有关参数,对于霜工况下的霜生长建立模型,经适当假设,运用质量守恒、能量守恒和动量守恒方程建立适合动态仿真的蒸发器数学模型,为系统仿真奠定基础; 2对蒸发在大扰动下的开、停机过程,运用动态集中参数模型进行分析和计算,为更好地描述制冷系统运行的全过程奠定基础,同时也为制冷系统实现自动控制提供一定的理论基础; 3对蒸发器正常运行过程,运用动态分布参数和参数间定量耦合的观点来分析和计算,为更好地了解稳态工况下各点参数的变化情况及各入口参数对蒸发器动态特性的影响即蒸发器性能对各参数变化的敏感性; 4编写翅片管蒸发器动态特性仿真计算程序,可以计算不同边界条件和初始条件下的制冷剂热力参数、空气温湿度和霜厚度分布场,实现对翅片管蒸发器在干、湿和霜工况下的动态仿真。
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The model developed in this paper could be used for the optimal design of multi unit parallel flow type evaporator.
建立多元平行流蒸发器模型进行数值模拟,分析各参数对蒸发器性能的影响,这对蒸发器的设计、优化具有重要意义。
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The result shows that the cooling capacity increases with increasing generator heat transfer. The coefficient of performance of the system increases when the quantity of the generator heat transfer is increased from 6 kW to 7 kW, however it decreases in the range of 7 kW-9 kW. When the fan frequency increases, the temperature of liquid ammonia leaving condenser decreases, while the cooling capacity and the COP of the system increases. When the flow rate and inlet temperature of water/glycol increases, the evaporator takes more heat away and the cooling capacity and COP of the system increases.
其结果可发现当发生器加热量增加,系统温度增加系统冷冻能力增加,但其COP於6 kW-7 kW 系统COP会有先增加,於7 kW-9 kW,系统COP会有下掉的趋势;在冷凝器方面,当风扇频率增加,冷凝器温度降低时,冷凝器出口冷媒随之降低,系统冷冻能力会有所提高,COP亦增加;在蒸发器方面,蒸发器卤水出口温度及卤水流量增加,可以使蒸发器带走更多的热量其系统冷冻能力及COP也就会相对增加。
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6 3 Bracket: Steel plate thickness: 0.6 ~ 0.9 Structure Structure 1: evaporator for single temperature control system (Single-capillary evaporator) Structure 2: evaporator for double temperature control system (Double-capillary evaporator) Structure 3: evaporator for three way temperature control system (Three-capillary evaporator) Key process Tube bending, Welding, Mono shelf assemble, Assembly welding, Leakage test, Cleaning, Coating, Inspection, Packing Technical standards Wire pitch:≥ 5 ㎜, can produce according to the drawing or sample supplied by clients, also can help the clients design and produce different evaporators.
1.4 ? 1.6 3 )支架:钢板厚度: 0.6 0.9结构结构1 :蒸发器的单一温度控制系统结构2 :双蒸发器温度控制系统结构3 :蒸发器的方式为三个温度控制系统关键过程弯管,焊接,组装单棚,大会焊接,泄漏试验,清洗,涂料,检验,包装的技术标准线间距:≥ 5 ㎜,能产生根据图纸或样品提供的客户,还可以帮助客户设计和生产不同的蒸发器。
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6 3 Bracket: Steel plate thickness: 0.6 ~ 0.9 Structure Structure 1: evaporator for single temperature control system (Single-capillary evaporator) Structure 2: evaporator for double temperature control system (Double-capillary evaporator) Structure 3: evaporator for three way temperature control system (Three-capillary evaporator) Key process Tube bending, Welding, Mono shelf assemble, Assembly welding, Leakage test, Cleaning, Coating, Inspection, Packing Technical standards Wire pitch:≥ 5 ㎜, can produce according to the drawing or sample supplied by clients, also can help the clients design and produce different evaporators.
0.9 结构结构1 :蒸发器的单一温度控制系统结构2 :双蒸发器温度控制系统结构3 :蒸发器的方式为三个温度控制系统关键过程弯管,焊接,组装单棚,大会焊接,泄漏试验,清洗,涂料,检验,包装技术标准线间距:≥ 5 ㎜,能产生根据图纸或样品提供的客户,还可以帮助客户设计和生产不同的蒸发器。
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The correlations of heat transfer and pressure-drop in both refrigerant side and airside are elected. The computational units are divided along the evaporation process and the computation code is developed. The program is verified by the experiment results. 5 Six kinds of evaporators with different numbers of flow and passages arrangement were simulated.
建立了层叠式蒸发器的1维数值仿真模型,选取了制冷剂侧和空气侧的传热和阻力性能关系式,按蒸发器流程进行了单元体的划分并编制了计算程序,对2种层叠式蒸发器进行计算并与实验结果进行比较,验证了程序的可行性。
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Simulation on the inner flow field of a horizontal tubes of falling film evaporator in a refrigeration system was performed using two-phase flow model VOF in FLUENT,and the influence of different tube arrangements on the flow field was examined.
采用FLUENT两相流VOF模型,对制冷系统中水平管降膜式蒸发器内部流场进行了数值模拟,研究了蒸发器内部蒸发管的不同布管方式对蒸发器内部流场的影响。
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Bellows Gate Valves However, in large differential pressure operating conditions, evaporation pressure has eased, the evaporator load requirements of the fluid volume decreased, but the actual situation the contrary, in the suction superheat unchanged, due to evaporation pressure has eased, the evaporator outlet pressure be reduced accordingly, pressure changes above and below the diaphragm, causing the main valve opening increases for increased fluid; but in a small pressure operating conditions, evaporation pressure rise, evaporator load demand for fluid volume increased, but the reality is that in the suction gas superheat unchanged, due to evaporation pressure rise, a corresponding increase in the evaporator outlet pressure, pressure difference above and below the diaphragm smaller, so that the main valve opening decreased for the reduction of liquid volume; in variable load is all about.
但在大压差工况下,蒸发压力降低,蒸发器负荷需求的液量减少,但实际情况相反,在吸气过热度不变的情况下,由于蒸发压力降低,蒸发器出口压力相应降低,膜片上下的压差变大,使主阀开度增大,供液量增加;但在小压差工况下,蒸发压力上升,蒸发器负荷需求的液量增多,但实际情况是在吸气过热度不变的情况下,由于蒸发压力上升,蒸发器出口压力相应提高,膜片上下的压差变小,使主阀开度减小,供液量减少;在变负荷下亦如此。
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However, in large differential pressure operating conditions, evaporation pressure has eased, the evaporator load requirements of the fluid volume decreased, but the actual situation the contrary, in the suction superheat unchanged, due to evaporation pressure has eased, the evaporator outlet pressure be reduced accordingly, pressure changes above and below the diaphragm, causing the main valve opening increases for increased fluid; but in a small pressure operating conditions, evaporation pressure rise, evaporator load demand for fluid volume increased, but the reality is that in the suction gas superheat unchanged, due to evaporation pressure rise, a corresponding increase in the evaporator outlet pressure, pressure difference above and below the diaphragm smaller, so that the main valve opening decreased for the reduction of liquid volume; in variable load is all about.
但在大压差工况下,蒸发压力降低,蒸发器负荷需求的液量减少,但实际情况相反,在吸气过热度不变的情况下,由于蒸发压力降低,蒸发器出口压力相应降低,膜片上下的压差变大,使主阀开度增大,供液量增加;但在小压差工况下,蒸发压力上升,蒸发器负荷需求的液量增多,但实际情况是在吸气过热度不变的情况下,由于蒸发压力上升,蒸发器出口压力相应提高,膜片上下的压差变小,使主阀开度减小,供液量减少;在变负荷下亦如此。因此热力膨胀阀在变工况下供液量的调节方面需进一步改进。
- 更多网络解释与蒸发器相关的网络解释 [注:此内容来源于网络,仅供参考]
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evaporator:蒸发器蒸馏器
evaporator 蒸发器 | evaporator 蒸发器蒸馏器 | evaporator 蒸馏器
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flooded evaporator:溢流式蒸发器
flooded dissolver 溢流式溶解器 | flooded evaporator 溢流式蒸发器 | flooded type evaporator 液流式蒸发器
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direct evaporator:直接冷却式蒸发器
蒸发器 evaporator | 直接冷却式蒸发器 direct evaporator | 直接式蒸发器 direct evaporator
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frosting evaporator:结霜蒸发器
蓄冰式蒸发器 ice-bank evaporator | 结霜蒸发器 frosting evaporator | 除霜蒸发器 defrosting evaporator
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evaporation tank:大型蒸发器
"evaporation pan","小型蒸发器" | "evaporation tank","大型蒸发器" | "standard pan","标准蒸发器"
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multi-effect film evaporator:多效蒸发器
降膜式蒸发器 downward film evaporator | 多效蒸发器 multi-effect film evaporator | 刮板式薄膜蒸发器 scraper type evaporator
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climbing film evaporator:升膜式蒸发器
climbing film(薄膜蒸发装置中的)升膜 | climbing film evaporator升膜(式)蒸发器 | climbing-falling film evaporator升-降膜式蒸发器
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centrifugal film evaporator:离心式薄膜蒸发器
固定式刮板薄膜蒸发器 constant-clearance scraper film evaporator | 离心式薄膜蒸发器 centrifugal film evaporator | 外循环式蒸发器 external circulating evaporator
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downward film evaporator:降膜式蒸发器
升膜式蒸发器 upward film evaporator | 降膜式蒸发器 downward film evaporator | 多效蒸发器 multi-effect film evaporator
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ice cube maker evaporator:制冰块器的蒸发器
压焊板式蒸发器 roll-bond evaporator | 制冰块器的蒸发器 ice cube maker evaporator | 结冰式蒸发器 ice-bank evaporator