A Numerical investigation on the influence of heater and condenser orientation and its location on steady state performance of a Two Phase Natural Circulation Loop (TPNCL) is presented. In the present study, four possible orientations are considered in TPNCL namely, Vertical Heater and Vertical Condenser (VHVC), Vertical Heater and Horizontal Condenser (VHHC), Horizontal Heater and Horizontal Condenser (HHHC) and Horizontal Heater and Vertical Condenser (HHVC). An in house MATLAB code is developed to solve the systems of equations. Homogeneous equilibrium model (HEM) is used in two phase regions. It is observed that steady state mass flow rate of the loop is significantly influenced by the developed pressure gradient in the riser and downcomer sections, as well as available vapour quality in the riser section. Moreover, it is also noticed that condenser position and orientation significantly effects the thermo-hydraulic characteristic of loop compared with heater orientation.

给出了关于加热器和冷凝器的方向及其位置对两相自然循环回路（TPNCL）稳态性能的影响的数值研究。在本研究中，在TPNCL中考虑了四个可能的方向，即垂直加热器和垂直冷凝器（VHVC），垂直加热器和水平冷凝器（VHHC），水平加热器和水平冷凝器（HHHC）和水平加热器和垂直冷凝器（HHVC）。开发了内部MATLAB代码来求解方程组。在两个相区域中使用均质平衡模型（HEM）。可以观察到，回路的稳态质量流量受提升管和降液管段中形成的压力梯度以及提升管段中可用蒸气质量的影响很大。而且，