【作者】 吴晓非；

【导师】 王健；

【作者基本信息】 同济大学 ， 供热供燃气通风及空调工程， 2007， 硕士

【摘要】 随着上个世纪石油危机的出现，人类已经意识到了节约能源的问题，不断提出各种节约能源的措施。在这些节约能源的措施中，有一些方法使本来就不是很好的室内空气的品质进一步下降，造成了很多健康上的问题，特别是在SARS出现以后，这一问题显得更为突出。为此各国都提倡提高空调系统的新风量，这就带来了一个空调负荷增大的问题。在这种背景下空调行业中出现了一种在排风和新风之间进行的热回收的装置，全热交换器。全热交换器的节能原理在于，它可以用排出的室内空气来预处理新风，使新风的负荷降低，从而节约空气处理设备的能源消耗。全热交换器的重要评价指标是显热效率和潜热效率。这两个指标对于一个全热交换器来讲并不是一个恒定的数值，还和运行的工况有关。 本文采用实验的方法，对影响全热交换器的两个效率的工况因素进行了分析，并采用多元线性回归的方法对实验数据进行处理，得到一个通过室内外空气间的温度差，绝对湿度差和工作风量来计算全热交换器的实时工作效率的经验公式。并利用建筑模拟软件结合excel对使用全热交换器和未使用全热交换器之前的全年逐时空调负荷进行了比较，然后再联系空调负荷下降对主机性能变化带来的影响和负荷下降对水泵运行功耗带来的影响对建筑全年的空调逐时功耗进行了计算。最后对分别在使用和未使用全热交换器的两种情况下的计算得到能源消耗情况进行了比较分析。 并关于进一步工作的方向进行了简要的讨论。更多还原

【Abstract】 Since the outbreak of oil crisis in last century, people has aware of the importance of energy saving, and has found lots of ways to save energy. Some of these ways made indoor air quality that already not so well even worse, which caused much problems of health. After the crisis of SARS, this problem is prominent. For the reason, many countries call for increasing the volume rate of fresh air, and it cause the rise of air-conditioning load. In this circumstance, a kind of heat recovery apparatus that exchange heat and moisture between fresh air and exhaust air has been appeared in HVAC industry, which called total heat exchanger。 The energy saving principle of total heat exchanger is that it use discharge air to precool or preheat fresh air which can reduce the load of fresh air and save energy. Sensible heat efficiency and latent heat efficiency are two critical evaluating indicators of total heat exchanger. These two evaluating indicators are not constant, they have relation with working condition.In this thesis, working condition that influence the two evaluating indicators has been analyzed on basis of experiment study. Statistics has been used to deal with the experiment data, and work out a expressions that can count the real time efficiency of total heat exchanger from temperature difference and absolute humidity difference of inside and outside air and working air volume. Yearly real time air conditioning load after using total heat exchanger was compared with the load without total heat exchanger by building simulating software. A year round energy consumption has been counted on the basis of influence of chiller performance and water pump performance caused by reduction of air conditioning load. Energy consumption with and without total heat exchanger was counted and compared by method of comparative analysis.A brief discussion of next step of work was taken at last.更多还原