<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Re: Type997</div><div><br></div><div>Imagine you have insulation above the horizontal ground heat exchanger on the soil surface that stretches out 4 meters beyond the edges of the pipe area and no insulation beyond that. This parameter would then be set to 4.</div><div><br></div><div>My bigger question is why you would be using a detailed ground heat exchanger model when you only have one pipe. I would recommend one of the simpler buried pipe models - unless you need one of the unique features of the ground heat exchanger model (surface insulation, multiple ground layers, etc) </div><div><br></div><div>Jeff<br><br>Sent from my iPhone</div><div><br>On May 1, 2015, at 6:12 AM, SANJEEV JAKHAR <<a href="mailto:sanjeev.jakhar@pilani.bits-pilani.ac.in">sanjeev.jakhar@pilani.bits-pilani.ac.in</a>> wrote:<br><br></div><blockquote type="cite"><div><div dir="ltr"><div><div>Dear sir,<br></div>Within the GHP library, Ground heat exchanger (Type 997), i didnt understand the parameter "12" Length of surface extension: left (The distance that the surface (insulating layer or conditioned space) above the ground heat exchanger pipes extends beyond the edges of the pipes and towards the left (decreasing x)). <br></div>By default it is taking 2 m length. How does the change in this parameter effects the performance if i have taken a system of one pipe in one pipe layer. So please guide me.<br><div><br clear="all"><div><div><div><div class="gmail_signature"><div dir="ltr"><div><span><font color="#888888"><font color="#000000"><font size="2">Thanks & Regards,</font></font><br><br></font></span></div><b><span></span></b><div><b><span></span></b><span><span style="color:rgb(33,29,112);font-family:Arial,sans-serif"><font color="#000000"><b>Sanjeev Jakhar</b><br>Research Scholar</font></span><font color="#000000"><br></font><b style="color:rgb(33,29,112);font-family:Arial,sans-serif"><font color="#000000">Center for Renewable Energy and Environment Development (CREED)<br>Mechanical Engineering Department<br></font></b></span><div><span></span></div><span><font color="#000000">
</font></span><span><b style="color:rgb(33,29,112);font-family:Arial,sans-serif"><font color="#000000">Birla Institute of Technology & Science, Pilani</font></b></span><span><font color="#000000">
</font><b style="color:rgb(33,29,112);font-family:Arial,sans-serif"><font color="#000000"><br>Rajasthan - 333031</font></b></span></div></div></div></div>
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