| 摘要: |
| 针对传统毛细管辐射空调其毛细管末端采用水作为载冷剂，二次换热降低了其能效且存在冬天冻坏管路等隐患，本文提出以制冷剂为载冷剂的多联干式毛细管辐射热泵系统，基于宁波工程学院实验平台，在冬季工况下对该机组进行制热测试。以冷凝温度48 ℃为控制目标，分别测试了风管机制热和毛细管辐射制热时的室内温湿度和空气流速。并结合PMV-PPD热舒适评价指标，对比分析了这两种供暖末端的热舒适性。实验结果表明：多联干式毛细管辐射热泵系统冬季工况制热8 h长时间运行，室内温度场分布均匀，1.5 m处水平温差最大为0.56 ℃、垂直方向温差最大为0.37 ℃，在回油过程中温降小于1 ℃，相对湿度维持在60%~65%，PMV和PDD热舒适指标分别维持在-0.5~0、0~10%，满足Ⅰ级舒适标准，且各指标均优于风管机。 |
| 关键词: 多联干式毛细管辐射热泵 风管机 室内热环境 预计平均热感觉指数（PMV） 预测不满意百分数（PPD） |
| DOI： |
| 投稿时间：2019-06-25 修订日期：2019-09-21
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| 基金项目:浙江省基础公益研究计划项目（LGG19E060002）和宁波市重点公益项目（2019C10031）资助。 |
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| ExperimentalStudy on Indoor Thermal Comfort of Multi-connected Dry Capillary Radiation Heat Pump |
| Ma Xiaodan,Wang Mengfei,Pu Yuhang,Song Chentao,Zhuang Dingding,Hong Shiying,Zhou Xinyu,Tu Qiu |
| (College of Architecture and Transportation Engineering, Ningbo University of Technology) |
| Abstract: |
| In traditional capillary radiation air conditioning systems, water is used as the coolantinthe terminalsof the capillary. However, the secondary heat transfer reduces the energy efficiency and freezing of pipes in winter is a potential danger. In this study, a multi-connected dry capillary radiation heat pump (MDCHP) with refrigerant as the cooling medium has been proposed. Thermal tests of the unit were undertaken in winter at the experimental platform of the Ningbo Institute of Engineering. Indoor dry and wet bulb temperature, and air velocity in heating mode were tested for ducted air conditioning unit and MDCHP respectively when the target condensation temperature was set to 48 ℃.The thermal comfort of the two heating terminals were compared and analyzed with the thermal comfort evaluation index of PMV-PDD. During an 8 h running period of the MDCHP, the indoor temperature field distribution was uniform, the maximum horizontal temperature difference at 1.5m was0.56 °C, and the maximum vertical temperature difference was0.37 °C. During the process of oil return, the temperature drop was less than 1 °C, the relative humidity was maintained at 60%–65%, and the thermal comfort index of PMV and PDD were maintained at-0.5–0.0 and0%–10%, respectively. These results demonstrated that the MDCHP can achieve a First Class standard of thermal comfort and every comfort index was superior to that of ducted air conditioning unit. |
| Key words: multi-connected dry capillary radiation heat pump ducted air conditioning unit indoor thermal environment predicted mean vote (PMV) predicted percentage of dissatisfaction (PPD) |
