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中国科学院广州能源研究所研制成功的太阳能自动开水器最近通过了技术鉴定。该开水器利用复合抛物面聚光原理,用聚集的太阳能将水加热至沸腾,并利用所产生的水蒸汽压力将开水自动压送至开水桶供饮用,然后不断补充冷水。整个过程只靠太阳能就能自动运行,不需要别的能源或电磁阀,也不需用人操作。它运行可靠,热效率高。该装置由四个复合抛物面单体串联而成,聚光比为3. 82,其特点是不需连续跟踪,只要一年内调整十二次倾角即可。在太阳总辐射强度稳定在550-600W/m~2条件下可不断产出开水。当环境温度为35℃,太阳辐射强度稳定在850W/m~2时,每平方米采光面每小时开水产量可达4. 65kg,热效率可达40%。用1. 72m~2采光面积的集热器,在广州地区,
Guangzhou Institute of Energy Institute of Chinese Academy of successful solar automatic water heater has recently passed the technical appraisal. The water boilers utilize the principle of compound parabolic concentrator, which heats water to boiling with concentrated solar energy and uses the generated water vapor pressure to automatically deliver boiling water to the open bucket for drinking, and then continuously replenishes the cold water. The whole process can only run automatically by solar energy, do not need any other energy or solenoid valve, do not need to operate. It runs reliably with high thermal efficiency. The device consists of four composite parabolic monomer in series, the concentration ratio of 3.82, which is characterized by no need for continuous tracking, as long as a year to adjust the twelve dip angle can be. In the sun the total radiation intensity is stable at 550-600W / m ~ 2 conditions can continue to produce water. When the ambient temperature is 35 ℃, the solar radiation intensity stabilized at 850W / m ~ 2, the output per hour of water per square meter of light up to 4. 65kg, thermal efficiency up to 40%. With 1. 72m ~ 2 lighting area of the collector, in Guangzhou,