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<div class="ss"><div><span>导读： </span>据外媒报道，美国斯坦福大学的一项新研究，设计了一种离网、低成本的模块化能源，可以在夜间高效发电。</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"><div> 据外媒报道，美国斯坦福大学的一项新研究，设计了一种离网、低成本的模块化能源，可以在夜间高效发电。报道称，虽然<a href="http://solar.oecr.com" target="_blank" class="relatedlink">太阳能</a>作为新能源具有很多好处，但是由于其依赖于阳光，在一些阳光不足的地区使用上将受到限制。因此，科学家设计了一种夜间发电系统，不会受到地区的限制。</div><div><br></div><div><p style="text-align: center;"><a href="data/attachment/portal/202008/17/151748su9x2gen3ll3qdqd.jpg" target="_blank"><img src="data/attachment/portal/202008/17/151748su9x2gen3ll3qdqd.jpg"></a></p></div><div><br></div><div> 为了找到合适的替代方法，斯坦福大学的科学家将目光投向了辐射冷却发电。该方法通过利用周围空气吸收的热量产生的温差和冷空间的辐射冷却效应来发电。</div><div><br></div><div> 研究人员表示，利用辐射冷却发电的最有效方法之一是使用热传导发电机，它是一种能够运用热电效应（塞贝克效应）将热（温度差）直接转换成电能的一种装置。</div><div><br></div><div> 研究中，研究人员进一步优化了辐射冷却发电。他们改进了能量的收集，使更多的热量从周围的空气中流入系统，并加入了新的商用热电<a href="http://material.oecr.com" target="_blank" class="relatedlink">材料</a>，提高了该装置的能量利用率。</div><div><br></div><div> 此外，研究人员还使用计算机建模来模拟具有真实<a href="http://theory.oecr.com" target="_blank" class="relatedlink">物理</a>参数的发电过程，计算出一个覆盖一平方米屋顶的热传导发电机可以在热损失和热电转换之间取得最佳的平衡点，以最大限度地利用屋顶的夜间发电设备。</div><div><br></div><div> 结果发现，不需要通过电池和其他任何的外部能源，制造出的装置能够每平方米产生2.2瓦特的电量，这是之前计算机模拟发电量的120倍。</div><div><br></div><div> 下一步，研究人员将对研究设备在白天和夜间之间的最佳设计，以进一步扩大该设备的实际应用。</div><div><br></div><div><p microsoft="" yahei",="" simsun;="" background-color:="" rgb(255,="" 255,="" 255);="" text-align:="" center;"="" center;="" 255);"="" style="text-align: center; overflow-wrap: normal; margin: 0px; padding: 0px; color: rgb(143, 143, 143);"><a href="http://www.oecr.com/data/attachment/portal/202007/28/162120mrh328hrpmg4b3by.jpg" target="_blank" style="overflow-wrap: 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