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Question

本文从建筑节能的方面出发，主要介绍了空气源热泵热水机组的特点、基本系统组成、基本工作流程和工作原理，并重点对空气源热泵热水工程系统的设计作详细的描述，最后总结出该系统的适应性、经济性。空气源热泵热水热水机组设计包括:机组的系统设计、机组整体布局设计、套管冷凝器设计、翅片蒸发器设计、辅助设备选型、控制系统设计、空气源热泵热水器的安装和调试及维护等。其中以套管冷凝器和翅片蒸发器设计计算为重点，详细阐述了换热系数和换热管数的确定、整体结构的设计计算。
系统采用谷轮涡旋式压缩机，换热器采用套管冷凝器和翅片蒸发器，工质使用R22，机组制热量17.5kW。设计要求：加热初始水温15℃，加热终止水温52℃；设计工况：蒸发温度0℃，冷凝温度55℃，过冷度6℃，过热度5℃，传热温差5℃。
本文还进行了空气源热泵热水器工况特性分析，在实际工作时，由于环境温度不
同和要求的出水温度不同，机组的制热量也随之变化。在制热条件下，空气源热泵热水器的性能系数随着出口温度的增加而减小，随环境温度的降低而增加。

Answer 1

From the aspects of building energy-saving, mainly introduced the air source heat pump water heater units, the characteristics and basic system composition, working principle and basic work flow, and the key of air source heat pump hot water system design for a detailed description of the system, and finally summarizes the adaptability and economy. Air source heat pump hot water generator design includes: unit of system design, overall layout design, the unit of condenser bushing design, design and fin evaporator auxiliary equipment selection and control system design, air source heat pump water heater installation and commissioning and maintenance, etc. In the condenser and evaporator finned tube for key design calculation, this paper expounds the heat transfer coefficient of heat exchange tube and the whole structure, determine the number of design calculation.
System USES of vortex, heat exchanger type compressor adopting casing condenser and evaporator, fin, working unit system using R22 heat 17.5 kW. The initial design requirements: heating temperature 15 ° c, heating temperature 52 termination, Design: the evaporation temperature 0 ° c, 55, condensing temperature saturated.the degree of six degrees Celsius, heat transfer, 5 degrees Celsius temperature 5 ° c.
In this paper is carried out air source heat pump water heater working characteristic analysis, in actual work, due to the environmental temperature
TongHe requirements of different water temperature, the unit of heat changes. In heating conditions, the air source heat pump water heater with the performance of the outlet temperature coefficient decreases with the increase of temperature, reducing environment.
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