<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Underground temperatures below 10m are usually reckoned to be the same as the average yearly air temperature.<div><br></div><div>There is a formula in Labs, K "Underground Building Climate". Solar Age, Vol 4 Part 10, 1979 reproduced in Harris, D J "Ground Temperatures in Britain". International Journal of Ambient Energy, Vol 27, No 3, which relates underground temperature to Mean annual Temperature, depth, time of year in days, amplitude of surface temperature, thermal diffusivity, which gives a sort of sine wave. Also in <span class="Apple-style-span" style="font-size: 12px; ">Jenkins, D. P., Tucker, R., & Rawlings, R. (2009). Modelling the carbon-saving performance of domestic ground-source heat pumps, <i>Energy and Buildings</i>.</span></div><div><br></div><div> <br><div>
<span class="Apple-style-span" style="font-size: 12px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>Bob Irving<br>PhD researcher <br>Oxford Inst of Sustainable Development<br>Oxford Brookes University<br><br>01865 484201</div><div>01285 650281</div></div></span>
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<br><div><div>On 29 Sep 2009, at 01:44, $BIp@/9'<#(B wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Hello. <br><br>I am evaluating the housing complex by the format to which the climatic data of Tokyo is provided, <br>and using ESP-r. <br><br>An underground temperature is not included in meteorogical data. Please teach an underground temperature <br>by which method to calculate in ESP-r. <br><br>-----<br> Name : Koji Takemasa$B!J(BDr. Eng.$B!K(B<br> E-mail : <a href="mailto:koji_takemasa@mac.com">koji_takemasa@mac.com</a><br><br><br>_______________________________________________<br>esp-r mailing list<br><a href="mailto:esp-r@lists.strath.ac.uk">esp-r@lists.strath.ac.uk</a><br>http://lists.strath.ac.uk/mailman/listinfo/esp-r<br></div></blockquote></div><br></div></body></html>