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太阳能热水器的使用是优缺点并存的
来源:http://www.sdlntyn.com 发布时间:2016-10-20 15:56:09 浏览次数:743
(1)分散性:到达地球表面的太阳辐射的总量尽管很大,但是能流密度很低。平均说来,北回归线附近,夏季在天气较为晴朗的情况下,正午时太阳辐射的辐照度更大,在垂直于太阳光方向1平方米面积上接收到的太阳能平均有1000W左右;若按全年日夜平均,则只有200W左右。
(1) the total amount of solar radiation reaching the earth's surface is very large, but the density of the solar radiation is very low. On average, near the Tropic of cancer, the weather is fine in the summer, the maximum irradiance of solar radiation at noon, in the direction perpendicular to the sun area of 1 square meters of the solar energy received on average is about 1000W; if the year average day and night, only about 200W.
而在冬季大致只有一半,阴天一般只有1/5左右,这样的能流密度是很低的。因此,在利用太阳能时,想要得到一定的转换功率,往往需要面积相当大的一套收集和转换设备,造价较高。
In winter, only about half of the average day, only about 1/5 cloudy, so the flow density is very low. Therefore, in the use of solar energy, you want to get a certain conversion power, often requires a large area of a collection and conversion equipment, cost is higher.

The
(2)不稳定性:由于受到昼夜、季节、地理纬度和海拔高度等自然条件的限制以及晴、阴、云、雨等随机因素的影响,所以,到达某一地面的太阳辐照度既是间断的,又是极不稳定的,这给太阳能的大规模应用增加了难度。为了使太阳能成为连续、稳定的能源,从而更终成为能够与常规能源相竞争的替代能源,就必须很好地解决蓄能问题,即把晴朗白天的太阳辐射能尽量贮存起来,以供夜间或阴雨天使用,但目前蓄能也是太阳能利用中较为薄弱的环节之一。
(2) stability: as a result of the day and night, season, geographic latitude and altitude and other natural conditions and sunny, cloudy, rain clouds and other random factors, so, at a certain ground-based solar irradiance is interrupted, it is also extremely unstable, increasing the difficulty of large-scale application too Yang energy. In order to make solar energy as a continuous, stable energy, and ultimately be able to compete with conventional energy sources of alternative energy sources, it is necessary to solve the storage problem, namely the sunny day the sun radiant energy stored up as far as possible, and for the night or rainy days, but the current utilization of solar energy storage is relatively weak one of the. The
(3)效率低和成本高:目前太阳能利用的发展水平,有些方面在理论上是可行的,技术上也是成熟的。但有的太阳能利用装置,因为效率偏低,成本较高,总的来说,经济性还不能与常规能源相竞争。在今后相当一段时期内,太阳能利用的进一步发展,主要受到经济性的制约。在搬家的时候要做些必要的事情,使得搬家更加顺利。
(3) low efficiency and high cost: at present, the development of solar energy utilization level, some aspects of the theory is feasible and technically mature. But some solar energy utilization device, because of the low efficiency, high cost, in general, the economy can not compete with conventional energy. In the future for quite a period of time, the further development of the use of solar energy, mainly by economic constraints. When moving to do some necessary things, making the move more smoothly.
以上就是我们产品的相关介绍,本文来源济南太阳能售后服务中心,更多精彩内容请点击:http://www.sdlntyn.com .
Above is the relevant introduction of our products, this article from the Ji'nan solar energy service center, more exciting content please click: http://www.sdlntyn.com.