三重回路热泵系统冬季换气热回收特性的实验研究

TU 83; 为了改善热泵换气热回收系统在冬季大温差工况下的性能,提出三重回路嵌套式热泵换气热回收系统,替代目前普遍采用的单回路热泵换气热回收系统. 研制出三回路嵌套式热泵热回收系统的原型机,三重回路在室内温度20℃不变,室外温度从15℃降至-20℃的实验条件下,对热回收系统的新风处理过程、系统压比、系统工质循环流量、制热量和系统COP进行了全面的测试和研究. 结果表明:三重回路系统的压比和制冷剂质量流量随着室外温度的下降而降低,制热量和COP随着室外温度的下降而升高;三重回路热泵系统的制冷剂质量流量始终高于传统热泵系统;与配置相同的单回路热泵系统相比,当室外温度低于2. 5℃时,三重回路系统...

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Published in北京工业大学学报 Vol. 45; no. 10; pp. 1009 - 1016
Main Authors 王磊, 马国远, 马安娜, 周峰, 李富平
Format Journal Article
LanguageChinese
Published 北京工业大学环境与能源工程学院,北京,100124%北京工业大学机械工程与应用电子技术学院,北京,100124 01.10.2019
Subjects
三重回路
heat pump
热泵
热回收
性能改善
ventilation
heat recovery
winter
triplex loop
通风换气
冬季
performance improvement
Online AccessGet full text
ISSN0254-0037
DOI10.11936/bjutxb2018060033

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Abstract TU 83; 为了改善热泵换气热回收系统在冬季大温差工况下的性能,提出三重回路嵌套式热泵换气热回收系统,替代目前普遍采用的单回路热泵换气热回收系统. 研制出三回路嵌套式热泵热回收系统的原型机,三重回路在室内温度20℃不变,室外温度从15℃降至-20℃的实验条件下,对热回收系统的新风处理过程、系统压比、系统工质循环流量、制热量和系统COP进行了全面的测试和研究. 结果表明:三重回路系统的压比和制冷剂质量流量随着室外温度的下降而降低,制热量和COP随着室外温度的下降而升高;三重回路热泵系统的制冷剂质量流量始终高于传统热泵系统;与配置相同的单回路热泵系统相比,当室外温度低于2. 5℃时,三重回路系统的制热量和COP高于传统热泵系统,在室外温度为-20℃制热量提高12. 43% ,系统COP提高23. 1% . 三重回路热泵换气热回收系统在冬季的运行性能良好,在绝大多数情况下系统性能优于传统单一回路热泵换气热回收系统的性能.
AbstractList TU 83; 为了改善热泵换气热回收系统在冬季大温差工况下的性能,提出三重回路嵌套式热泵换气热回收系统,替代目前普遍采用的单回路热泵换气热回收系统. 研制出三回路嵌套式热泵热回收系统的原型机,三重回路在室内温度20℃不变,室外温度从15℃降至-20℃的实验条件下,对热回收系统的新风处理过程、系统压比、系统工质循环流量、制热量和系统COP进行了全面的测试和研究. 结果表明:三重回路系统的压比和制冷剂质量流量随着室外温度的下降而降低,制热量和COP随着室外温度的下降而升高;三重回路热泵系统的制冷剂质量流量始终高于传统热泵系统;与配置相同的单回路热泵系统相比,当室外温度低于2. 5℃时,三重回路系统的制热量和COP高于传统热泵系统,在室外温度为-20℃制热量提高12. 43% ,系统COP提高23. 1% . 三重回路热泵换气热回收系统在冬季的运行性能良好,在绝大多数情况下系统性能优于传统单一回路热泵换气热回收系统的性能.
Abstract_FL Ventilation heat recovery is an important way to effectively reducing energy consumption of buildings. To improve the system performance of a heat pump heat recovery system under large temperature difference conditions in winter, a triplex loop heat pump system was proposed to replace single loop heat pump system under the same working conditions. A prototype, which contained three independent heat pump cycles was made. In the case where the indoor temperature was constant at 20℃and outdoor temperature dropped from 15 ℃ to -20 ℃, the fresh air treatment process, the system pressure ratio, the circulation mass flow rate, the heating capacity and the system COP of the heat recovery system were fully tested and analyzed. Results show that the mass flow rate and the pressure ratio of the triplex loop heat recovery system decrease with the decrease of outdoor temperature but still higher than that of the traditional system, and the heating capacity and COP increase with the decrease of outdoor temperature. Under the experimental conditions, the COP of the triplex loop system has an advantage over the traditional heat pump system. When the outdoor temperature is -20℃, the heating capacity increases by 12. 43% , and the COP of the system increases by 23. 1% . The performance of the triplex loop heat pump heat recovery system is good in winter. In most cases, the system performance is better than that of the traditional single loop heat pump heat recovery system.
Author 马安娜
王磊
周峰
李富平
马国远
AuthorAffiliation 北京工业大学环境与能源工程学院,北京,100124%北京工业大学机械工程与应用电子技术学院,北京,100124
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Author_FL MA Anna
LI Fuping
ZHOU Feng
MA Guoyuan
WANG Lei
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  fullname: 李富平
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DocumentTitle_FL Experimental Study on Characteristics of Triplex Loop Heat Pump for Exhaust Air Heat Recovery in Winter
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Issue 10
Keywords 三重回路
heat pump
热泵
热回收
性能改善
ventilation
heat recovery
winter
triplex loop
通风换气
冬季
performance improvement
Language Chinese
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Title 三重回路热泵系统冬季换气热回收特性的实验研究
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