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我们生活的自然环境中到处存在着温差:冬夏季节温差,昼夜温差,气地温差,地表与地下温差等。有温差,就有热量传递与交换,就有热能的产生。但这些温差较小,一般难以进行能-功转换,或即使能够转换,但经济上不合算。为了与传统的高温热能有所区别,我们把这种自然存在的低温差低温热能称作“自然冷能”,通常简称“冷能”。由于冷热是相对而言的,平时所说的冷能也好,热能也好,实质都一样,只不过是能位(温差)不同而已。
We live in the natural environment there is a temperature difference everywhere: summer and winter seasons, temperature difference between day and night, temperature difference between land and surface temperature and underground temperature. A temperature difference, there is heat transfer and exchange, there is the heat generated. However, these small temperature differences are generally difficult to carry out energy conversion, or even if it can be converted, but not economically cost-effective. In order to be different from the traditional high-temperature thermal energy, we call this naturally occurring low-temperature low-temperature thermal energy “natural cold energy”, often referred to as “cold energy.” As the hot and cold are relatively speaking, usually said that the cold energy Ye Hao, heat Ye Hao, the essence is the same, but the energy level (temperature difference) is different.