摘要
当前,能源危机已经成为世界各国普遍面临的重要难题,世界许多国家均在努力改善能源结构,摆脱当前对化石能源的过度依赖。美国、西欧、日本、以色列等国家和地区都在着力发展本国的可再生能源产业,并形成了相关的技术优势和产业链。当前,我国虽已经开始发展新能源产业,但仍只是起步阶段。在一些传统工业和民用领域,仍在大量消耗煤、石油等化石能源,不仅造成能源浪费,而且污染环境。以城市集中供暖为例,每年要消耗大量的煤和油,而且污染空气,严重违背了“节能减排”的方针。因此针对当前我国最普遍的采暖方式,本文提出了辅热太阳能低温热水地板辐射采暖系统研究的课题。地板采暖技术是目前在我国比较受欢迎的一种新型采暖技术,具有科学、节能、热舒适性好等优点。本文着力从以下几个方面进行了研究:
一、针对郑州地区的地理位置,根据相关天文理论,建立郑州地区的太阳能辐照模型,确定郑州地区的最佳太阳能集热器倾角。
二、对比当前流行的太阳能集热器类型,选择最适宜郑州地区地板采暖系统的太阳能集热器类型。
三、计算采暖房间的热负荷,并针对房间具体环境,选择最佳的地面盘管布管方式、管间距、地面层各层厚度等;确定蓄热水箱的容积;运用综合能源价格现值法对比四种辅助热源,选择最佳的辅助热源形式。
四、对辅热太阳能低温热水地板辐射采暖系统进行运行测试,并对比常规散热器采暖和地板采暖,从分析的角度,对地板采暖的节能性给出量的评价。
地板采暖技术具有节能、科学、舒适等诸多优点,此外,与太阳能、生物质能结合的地板采暖技术更有利于在中西部经济不发达地区推广,不仅能解决农民生活用能问题,还能改善农民生活状况,提高生活质量。太阳能地板采暖技术具有十分广阔的发展前景。
Currently, energy crisis has become an important dilemma which all the countries in the word have to face. Most countries are all trying their hard to improve the energy structure, so as to break out of their dependence on the fossil energy. The America, West Europe, Japan, Israel and some other countries are all taking great pains to develop their renewable energy industry, and have formed technology advantage and industry chain. Recently,though our country has begun to develop the renewable energy industry, it is still at an initial stage. A great mass of coal, oil and other fossil energy are consumed in the traditional industrial and civilian field every year. Not only is the energy wasted, also the environment is polluted. Take the urban central heating for an example, A great mass of coal and oil are consumed every year, which pollutes the air and seriously violates the policy of energy conservation and emission reduction. Thus aim to the most universal heating system of our country in the present, study on low temperature hot water floor radiation heating system with auxiliary heating solar energy is put forward. The floor heating system is a new type heating system in the present, and is populated by its scientific, energy saving property and thermal comfort. This paper mainly does some research on following aspects:
First, aim to Zhenzhou’s location and according to relative theory, this paper will establish the solar radiation model of Zhengzhou region and determine the optimum tilted angle of solar collector in Zhengzhou region.
Second, Compared with the popular type of solar collector recently, Choose the optimum solar collector type which will suit Zhengzhou region.
Third, calculate the thermal load of heating room, and aim to the specific environment of heating room, determine the optimum piping mode and pipe pitch of ground coiled pipe, the thickness of different layers of ground and the volume of heat storage water tank. Apply the present value of synthetic energy price and compare with the four types of auxiliary heat source, choose the best type of auxiliary heat source.
Fourth, test the low temperature hot water floor radiation heating system. Compared with the radiator heating system and floor heating system, give an quantitative evaluation about the energy saving property of floor heating system in exergy analysis terms.
Floor heating technology has numerous benefits, such as energy saving, scientific, comfortable, and so on. In addition, the floor heating technology, which combined with solar technology and biomass technology, will be more helpful for the extension of floor heating system. It will solve the problem of peasants’energy consuming, improve the peasants’living condition and improve their life quality. The solar and floor heating system will make an expansive development prospect.
引文
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