【作者】 毕传丽；

【导师】 由世俊；

【作者基本信息】 天津大学 ， 供热、供燃气、通风及空调工程， 2007， 硕士

【摘要】 太阳能作为一种取之不尽,用之不竭,节能环保的可再生能源,越来越受到人们的关注,尤其是太阳能在建筑空调中的应用,成为许多建筑节能工作者致力追求的目标。由槽形抛物面线聚焦型集热器驱动的太阳能空调,由于其制冷机组是具有较高热力系数的双效吸收式制冷机组,在环保和节能上有很大优势,正日益发展起来。针对槽形抛物面线聚焦太阳能空调的应用及经济性,本课题主要进行了以下几个方面的研究:(1)分析影响到达地面的太阳辐射的因素,建立地面太阳能辐射强度的计算公式,以天津地区为算例计算了冬、夏晴天一天的太阳直射辐射强度变化。(2)对槽形抛物面线聚焦型太阳能集热器进行研究,建立槽形抛物面线聚焦集热器有效收益能量的计算模型,并对某一特定形式的槽形太阳能集热模块的集热量进行了定量的数学计算。(3)运用BIN法进对一工程行建筑负荷计算和能耗计算,收集整理天津地区的标准年气象数据资料,对标准数据库中的年逐时太阳直射辐射强度进行分析,统计计算每个温频段下的平均太阳直射辐射强度。能耗计算结果显示,对于本工程,选择34个太阳能集热模块时,太阳能集热系统提供的热量占系统全年总能耗的16%。(4)对本工程中槽形抛物面线聚焦太阳能空调系统采用投资回收期、内部收益率和费用年值法三个经济指标进行经济分析得出:在目前槽形太阳能集热设备发展初步阶段,由于集热设备的成本偏高,槽形抛物面线聚焦太阳能空调系统的投资回收期很长,基本上在全寿命周期内无法收回;内部收益率也小于基准折现率;费用年值要高于直燃型机组。而当集热器价格降低到目前的80%左右时,太阳能空调系统的费用年值将低于直燃系统的费用年值;内部收益率也将大于基准收益率,表现出了经济上的优越性。更多还原

【Abstract】 The solar energy is becoming more and more important as a clean and endless renewable energy especially for building Air-Conditioning system.The double-effect absorption chiller powered by linear parabolic concentrator solar collectors is developing because of it’s high coefficient and the superiority of energy saving and environment protection. So based on the application and economic analysis of this system, this paper had done the following jobs:This paper analyzed the effectors of the solar radiation arrivalling at the ground, and calculated direct soalr radiation of a summer and winner sunny day in Tianjin. This paper analyzed the performance of a liner parabolic concentrator, and established the equationof the collector’s usefull energy gain varying with solar radiant intensity and surrounding temperature. Quantitily calculate a certain collector’s useful energy gain.This paper used the BIN method to calculate the building load and energy consumption, then collected typical year weather data of Tianjin and statisticly calculated the mean solar direct radiant intensity at every temperature. The conclusion is that with 34 solar collectors, the energy from the collectors is 16% of the bilding anuul energy consumption.This paper used the annul-cost method to analyze a parabolic concentrator solar air conditioning system and the following conclusions: At present, because of the high cost of collector, the repayment period of investment is much longer than its life cycle period, the annual-cost of solar system is higher than direct fired system’s and IRR is lower than based discount rate. When the price of collector reduces to 80%, the annual-cost of the solar air-conditioning system will be obviously lower than the direct fired system’s and the IRR is higher than based discount rate, which shows the economic advantage.更多还原