摘要： 本文是以南京市某一别墅作为设计对象，在这里我们首先使用鸿业暖通软件进行该别墅冷热负荷的计算，根据所计算出来的冷热负荷以及系统计算出的新风量，通过焓湿图，进行风机盘管的选型，与此同时，得出送风量与回风量，通过送风量、回风量、新风量来进行新风机组的选型，同时进行风口的设计；绘制水管布置图，根据每段水管的冷负荷、水管长度以及局部阻力系数，借助天正暖通软件中计算选项的水力计算功能，得出水管的管径、流速、沿程阻力、局部阻力以及它们的总和；而后根据工程总冷负荷经计算得出实际冷负荷，根据所得出的冷负荷数据选择热泵机组，经计算得出水泵扬程，据此选择水泵；根据冬夏季冷热负荷的数据，通过相关的计算公式，计算出所需要的结果，以此来进行地埋管的设计与选择，并且通过地热换热器系统的水力计算进行地埋管换热器循环水泵的选型，根据该步骤对该别墅土壤源热泵空调系统进行系统的设计。结果表明：该独栋别墅工程负荷夏季总冷负荷为47166W，冬季总热负荷为15441W；经过各种空调系统的对比，选择风机盘管加新风系统；水管采用闭式两管制制管系统，冷热水共用一个管路，干管采用水平回程式；风系统中送风口和回风口选择200mm×200mm，高度为2.7m，新风口选择120mm×120mm；别墅地埋管竖井数目为18，间距为4.5m，垂直并联单U型管布置，材料为聚乙烯（PE100），管径为32mm。

关键词： 负荷计算；空调系统；水力计算；土壤源热泵；垂直埋管

Comparative Analysis of Design and Application of Ground Source Heat Pump System in a Single Villa

Abstract: This Article is Based on a Villa in Nanjing as the Design Object. Here We First Use the HVAC Software to Calculate the Cold and Hot Load of The Villa. According to the Calculated Cold and Heat Load and the New Air Volume Calculated by the System, the Type Selection of the Fan Coil is Carried out by the Enthalpy Wet Chart. At the Same Time, the Air Supply Volume and the Air Return are Obtained. Quantity, through the Air Supply, the Air Return, the New Air Quantity to Select the New Air Unit, and the Design of the Tuyere; Draw the Layout of the Pipe, According to the Cooling Load of the Pipe, the Length of the Pipe and the Coefficient of Local Resistance, with the Help of the Hydraulic Calculation Function of the Calculation Options in the Sky Normal HVAC Software, the Pipe Diameter and Velocity of the Pipe are Obtained. The Resistance, Local Resistance and the Sum of Them are Calculated, and Then the Actual Cooling Load is Calculated According to the Total Cooling Load of the Project. The Heat Pump Unit is Selected According to the Cold Load Data Obtained. The Pump Lift is Calculated and the Pump is Selected According to the Calculation. According to the Number of Cold and Hot Load in Winter and Summer, the Calculation Formula is Used to Calculate the Cold and Heat Load in Winter and Summer. In Order to Make the Design and Selection of the Buried Pipe, and Through the Hydraulic Calculation of the Geothermal Heat Exchanger System, the Type Selection of the Circulating Water Pump of the Buried Pipe Heat Exchanger is Carried out, and the System of the Soil Source Heat Pump System of the Villa is Systematically Designed According to This Step. The Results Show that the Summer Load of the Single House is 47166W, and the Total Heat Load is 15441W in Winter. Through the Contrast of Various Air Conditioning Systems, the Fan Coil and the Fresh Air System are Selected. The Water Pipe Adopts the Closed Two Tube System, the Cold and Hot Water is Shared by a Pipe, the Dry Pipe is Used for the Horizontal Return Program, and the Air Outlet in the Wind System is Used. The Selection of 200mm x 200mm, Height of 2.7m, and the Selection of 120mm x 120mm for the New Tuyere, the Number of Vertical Wells in the Buried Pipe of the Villa is 18, the Spacing is 4.5m, the Vertical Parallel Single U Tube is Arranged, the Material is Polyethylene (PE100) and the Pipe Diameter is 32mm.