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首页> 外文学位 >Analyse de l'efficacite energetique par acquisition de donnees des recuperateurs de chaleur des eaux usees et du chauffage solaire de l'eau chaude domestique sur le site de Benny-Farm.
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Analyse de l'efficacite energetique par acquisition de donnees des recuperateurs de chaleur des eaux usees et du chauffage solaire de l'eau chaude domestique sur le site de Benny-Farm.

机译：通过从Benny-Farm站点的废水换热器和太阳能供热系统获取数据来分析能源效率。

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摘要

The biggest solar heating system in Quebec's province is on Benny-Farm site. Unfortunately, the installation wasn't working for the research's period so it couldn't be studied. However, to measure with good accuracy and at low cost the solar radiation in the monitoring of a solar system, a new calibration method for photovoltaic pyranometers is presented. This new method is much simpler and polyvalent than other existing methods. It has decreased mean error by 91% and 94%, error's standard deviation by 25% and 17% and the measured solar power by 66% and 73% for the two tested pyranometers over a 15 days measuring period. This method could make possible a standard calibration by the pyranometer producer for a particular model.;Keywords. Solar heating, pyranometer, calibration, domestic hot water, drain water;The drain water heat recovery system (DWHRS) is gaining in popularity, but the configuration of these devices on Benny-Farm site has never been studied. The two buildings studied, CHANCE and CHBF, each have eight DWHRS on 24 apartments. Because the DWHRS are installed in parallel, the cold water flow is equally split on the eight DWHRS when there's a domestic hot water (DHW) demand. The DHW demand, the cold and preheated water temperatures have all been recorded every 1,5 minutes over 250 days. Although the DWHRS efficiency is well known in single family houses, differences are expected. First, chances of heat recovery on multiple DWHRS simultaneously are changing the efficiency. Also, the chances of recovering heat from batch flows (ex. bath) are increased. Finally, the heat transfer of the DWHRS with room air can modify the measure efficiency. The monitored data showed that impact of simultaneousness of DHW demand is not positive on the efficiency, but DHW demand frequency is with batch flow heat recovery. Finally, it has been demonstrated that the heat gain of preheated water with room air through the DWHRS and piping system is substantial. The measured efficiency over the summer period where cold water temperature is over 20°C is 12%. It seems that the increase of batch flow heat recovery compensate for the theoretical efficiency drop of this DWHRS configuration. From natural gas bills and monitored data, the recirculation heat loss is 50% of the DHW energy needs. Considering a 5% mortgage rate and 3% annual rise for natural gas, the return on investment without subsidy is 11,7 years for CHBF and 15,6 years for CHANCE. Even though this DWHRS configuration is good on the two studied buildings, more research is needed to identify the parameters that make this configuration a success.
机译：魁北克省最大的太阳能供暖系统位于本尼-法姆（Benny-Farm）。不幸的是，该装置在研究期间无法正常工作，因此无法进行研究。然而，为了在太阳能系统的监测中以良好的精度和低成本来测量太阳辐射，提出了一种用于光伏总辐射表的新校准方法。与其他现有方法相比，此新方法简单得多且具有多价性。在15天的时间内，两个测试的日射强度计的平均误差降低了91％和94％，标准误差降低了25％和17％，太阳能测量值降低了66％和73％。这种方法可以使总辐射表生产商对特定型号进行标准校准。太阳能加热，总辐射表，校准，生活热水，排水；排水热回收系统（DWHRS）越来越受欢迎，但从未对Benny-Farm现场的这些设备的配置进行研究。研究的两个建筑CHANCE和CHBF，每个都有24套公寓中的八个DWHRS。因为DWHRS是并行安装的，所以当有生活热水（DHW）需求时，八台DWHRS上的冷水流量将平均分配。在250天内，每1.5分钟记录一次DHW需求，冷水和预热水温度。尽管DWHRS效率在单户住宅中众所周知，但仍存在差异。首先，同时在多个DWHRS上进行热回收的机会正在改变效率。而且，从批料流（例如浴）中回收热量的机会也增加了。最后，DWHRS与室内空气的热传递可以改变测量效率。监测数据表明，DHW需求的同时性对效率没有积极影响，但是DHW需求的频率与间歇流热回收率有关。最后，已经证明，通过DWHRS和管道系统，预热水与室内空气的热量吸收是相当大的。在夏季，冷水温度超过20°C时，测得的效率为12％。似乎分批流热回收的增加弥补了这种DWHRS配置的理论效率下降。从天然气账单和监测数据来看，再循环热损失是DHW能源需求的50％。考虑到抵押贷款利率为5％，天然气的年增长率为3％，CHBF的无补贴投资回报率为11,7年，CHANCE的回报率为15,6年。即使此DWHRS配置在两座经过研究的建筑物上都很好，但仍需要进行更多研究来确定使该配置成功的参数。

著录项

  • 作者

    Dupre, Guillaume.;

  • 作者单位

    Ecole de Technologie Superieure (Canada).;

  • 授予单位 Ecole de Technologie Superieure (Canada).;
  • 学科 Engineering Mechanical.
  • 学位 M.Ing.
  • 年度 2009
  • 页码 164 p.
  • 总页数 164
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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