槽式太阳能储热采暖系统设计

Heating System Design of Parabolic Trough Solar Concentrator with Heating Storage

我国太阳能辐射资源丰富,大力开发太阳能资源,对改变国家能源结构,优化能源配置,提高能源综合利用率具有重要意义。在分析太阳能与常规供热方式联合供热的基础上,提出一种新型的槽式太阳能储热采暖系统,白天光照条件好的情况下,利用供水泵将冷水罐中的冷水泵入槽式太阳光镜场中,将集热管内部的水加热到额定温度,热水回流至热水罐储存起来,一部分热水通过换热器加热供暖系统,由换热水泵将换热后的水泵入冷水罐,多余的热水则储存在热水罐中;晚上或白天无光照条件下,利用热水罐中存储的热水加热供暖系统,从而达到全天24h供热。

It is of great significance to develop solar energy resources in China, which changes the national energy structure,optimizes the energy allocation, and improves the comprehensive utilization rate of energy. A new kind of parabolic trough solar collecting heat system is put forward on the basis of analyzing the combined solar energy and traditional energy. During the daytime with enough light intensity, cold-water is pumped into the parabolic trough solar concentrator heated to the rated temperature. The water with rated temperature flows back to the hot-water tank, part of it flows through the heat exchanger to the heating system while the redundant hot water stored in the hot-water tank. During the nighttime or the daytime without enough light intensity, the hot-water tank is utilized to provide heat for the collecting heat system so as to achieve24-hour-heating.