天津大学学报
天津大學學報
천진대학학보
JOURNAL OF TIANJIN UNIVERSITY SCIENCE AND TECHNOLOGY
2014年
1期
28-35
,共8页
热泵提升式系统%锅炉提升式系统%热能效率%(火用)效率%热泵用能效率
熱泵提升式繫統%鍋爐提升式繫統%熱能效率%(火用)效率%熱泵用能效率
열빙제승식계통%과로제승식계통%열능효솔%(화용)효솔%열빙용능효솔
heat pump upgrading system%boiler upgrading system%heat-energy efficiency%exergy efficiency%heat pump energy-use efficiency
针对热泵装置用能效率的计算方法进行了探讨,分析了热泵提升式系统用能效率的两种计算方法。以热能效率和(火用)效率作为评价指标,对热泵提升式系统和锅炉提升式系统这两种低温供热系统的用能情况进行了能量分析与(火用)分析。计算结果表明,热泵提升式系统的热能效率要低于锅炉提升式系统的热能效率,但其(火用)效率要高于后者的效率;当低温热源的供水温度较高可直接用于供暖时,应将低温热源的热量或作为“代价”计入供给能或供给(火用)来计算热泵装置的用能效率。
針對熱泵裝置用能效率的計算方法進行瞭探討,分析瞭熱泵提升式繫統用能效率的兩種計算方法。以熱能效率和(火用)效率作為評價指標,對熱泵提升式繫統和鍋爐提升式繫統這兩種低溫供熱繫統的用能情況進行瞭能量分析與(火用)分析。計算結果錶明,熱泵提升式繫統的熱能效率要低于鍋爐提升式繫統的熱能效率,但其(火用)效率要高于後者的效率;噹低溫熱源的供水溫度較高可直接用于供暖時,應將低溫熱源的熱量或作為“代價”計入供給能或供給(火用)來計算熱泵裝置的用能效率。
침대열빙장치용능효솔적계산방법진행료탐토,분석료열빙제승식계통용능효솔적량충계산방법。이열능효솔화(화용)효솔작위평개지표,대열빙제승식계통화과로제승식계통저량충저온공열계통적용능정황진행료능량분석여(화용)분석。계산결과표명,열빙제승식계통적열능효솔요저우과로제승식계통적열능효솔,단기(화용)효솔요고우후자적효솔;당저온열원적공수온도교고가직접용우공난시,응장저온열원적열량혹작위“대개”계입공급능혹공급(화용)래계산열빙장치적용능효솔。
The calculation methods of heat pump energy-use efficiency are discussed and two energy efficiency calcu-lation methods of the heat pump upgrading system are analyzed. With heat-energy efficiency and exergy efficiency as evaluation indexes,energy analysis and exergy analysis are conducted on the energy using-process of two low tem-perature heating systems which are the heat pump upgrading system and boiler upgrading system. The calculation re-sults show that the heat-energy efficiency of heat pump upgrading system is lower than that of boiler upgrading system,while the exergy efficiency of the former is higher than that of the latter. When the water supply temperature of low temperature heat source is high enough for it to be used directly for heating,its heat energy or exergy should be included in supply energy or supply exergy as a cost to calculate the energy-use efficiency of heat pump upgrading system.