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Development and Experimental Study of Air Source Heat Pump Water Heater 被引量:2
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作者 李海峰 蔡正云 《Meteorological and Environmental Research》 CAS 2010年第2期100-102,共3页
The principle and development prospect of air source heat pump water heat were introduced,as well as the designation of condenser (storage water tank),experimental study on installations was also carried out.The resul... The principle and development prospect of air source heat pump water heat were introduced,as well as the designation of condenser (storage water tank),experimental study on installations was also carried out.The results showed that air source heat pump water heater was superior to conventional system.Under the operation of cooling and heating,heat pump comprehensive utilization equipment could improve heating performance,reduce energy consumption,and recycle condensing heat to provide hot water. 展开更多
关键词 Air source heat pump water heater China
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Experimental study on characteristics of transcritical heat pump water heater using refrigerant HFC125
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作者 王方 连之伟 +1 位作者 范晓伟 王凤坤 《Journal of Southeast University(English Edition)》 EI CAS 2010年第2期182-186,共5页
To evaluate the performance of heat pumps using refrigerant HFC125,an experimental rig of a DC-inverter heat pump water heater is designed and set up,and the research on the transcritical heat pump water heater is car... To evaluate the performance of heat pumps using refrigerant HFC125,an experimental rig of a DC-inverter heat pump water heater is designed and set up,and the research on the transcritical heat pump water heater is carried out experimentally.It is found that there is a top value of the coefficient of performance(COP)when the system runs at 95 Hz of frequency.The relationships between the COP and compressor frequency,condensation pressure,evaporation pressure,condensation water temperature rise,and discharge temperature are discussed and analyzed at 95 Hz.And the COP of the HFC125 transcritical cycle is also compared with that of a R410 subcritical heat pump under the same conditions.The results indicate that there exists an optimum frequency for a better COP,and the system COP shows an increasing tendency with the decrease in condensation pressure and compressor ratio while the evaporation pressure remains invariant,and the COP decreases rapidly when cooling water temperature rises over 47.5 ℃.Compared with the R410A sub-critical cycle,the COP of HFC125 transcritical cycle significantly increases by 12% on average. 展开更多
关键词 HFC125 transcritical cycle heat pump water heater coefficient of performance(COP)
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Experimental Study of Thermoelectric Heat Pump Water Heater with Exhaust Heat Recovery from Kitchens 被引量:4
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作者 LIU Zhong-bing,ZHANG Ling,YANG Zhang,XU Ming,HAN Tian-he(College of Civil Engineering,Hunan University,Changsha,Hunan 410082,China) 《湖南大学学报(自然科学版)》 EI CAS CSCD 北大核心 2009年第S1期131-135,共5页
A new kind of thermoelectric heat pump water heater for kitchens exhaust heat recovery was presented,and its performances were investigated under different operating voltages.The experiment results show that the coeff... A new kind of thermoelectric heat pump water heater for kitchens exhaust heat recovery was presented,and its performances were investigated under different operating voltages.The experiment results show that the coefficient of performance decreases and the temperature difference between the hot and cold sides becomes larger with the increase of the operating voltage,but the heating time becomes short.The higher the temperature of water,the greater the temperature difference between the hot and cold sides,leading to a smaller coefficient of performance.Under an exhaust temperature of 36 ℃,the coefficient of performance decreases from 1.66 to 1.22 when the temperature of water increases from 28 ℃ to 46 ℃ with operating voltage 16 V.Performance tests illustrate that,compared with the conventional electrical water heaters,the new kind of thermoelectric heat pump water heater is more coefficient. 展开更多
关键词 THERMOELECTRIC heat pump KITCHENS EXHAUST water heater COEFFICIENT of performance
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Numerical and Experimental Study on Dynamic Performance of Heat Pump Water Heater with Electronic Expansion Valve
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作者 Liang Zhang Xianmin Guo Weiguo Li Weihua Wang 《Journal of Energy and Power Engineering》 2012年第10期1582-1588,共7页
A series of experiments on the dynamic performance of the HPWH (heat pump water heater) unit with EXV (electronic expansion valve) under different environmental conditions were conducted. The dynamic heating capac... A series of experiments on the dynamic performance of the HPWH (heat pump water heater) unit with EXV (electronic expansion valve) under different environmental conditions were conducted. The dynamic heating capacity and COP (coefficient of performance) of the HPWH unit under different EXV openings were measured. The effects of the EXV opening on the performance of the HPWH unit were analyzed. Meanwhile, the dynamic performance of the HPWH with EXV was simulated and the results were compared with the experimental one. The experimental results indicate that during heating process, the COP increases firstly and then decreases for a fixed EXV opening, which is in good agreement with the numerical result. For different EXV openings, the COP and heating capacity of the system using larger EXV opening are superior to those using the smaller one in the initial heating stage. While in the late stage, the performance of system using smaller EXV opening is better. It is found that the system performance is improved significantly by changing the EXV opening in the different heating period and the average COP of the HPWH system is increased by 7.6%. 展开更多
关键词 heat pump water heater electronic expansion valve experimental investigation simulation.
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Performance and Optimization of Air Source Heat Pump Water Heater with Cyclic Heating
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作者 李凡 陆高锋 +3 位作者 丁云霄 郑春元 李斌 翟晓强 《Journal of Shanghai Jiaotong university(Science)》 EI 2024年第2期179-187,共9页
A new type of microchannel condenser applied in the air source heat pump water heater(ASHPWH)with cyclic heating was proposed in this study.The operating performance of the ASHPWH was frst tested.Then,the structure of... A new type of microchannel condenser applied in the air source heat pump water heater(ASHPWH)with cyclic heating was proposed in this study.The operating performance of the ASHPWH was frst tested.Then,the structure of the microchannel condenser was optimized with the implement of vortex generators.Finally,a numerical model of the ASHPWH was established and the optimized microchannel condenser was studied.The experimental results showed that the average coefficient of performance(COP)of the 1HP(735 W)ASHPWH reached 3.48.In addition,the optimized microchannel condenser could be matched with a 3 HP(2430W)ASHPWH with an average heating capacity of 10.30 kW,and achieving an average COP of 4.24,14.6%higher than the limit value in the national standard. 展开更多
关键词 air source heat pump water heater(ASHPWH) cyclic heating MICROCHANNEL CONDENSER
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Performance analysis of air-water dual source heat pump water heater with heat recovery 被引量:9
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作者 CHEN ZeShao TAO WenQuan +1 位作者 ZHU YanWen HU Peng 《Science China(Technological Sciences)》 SCIE EI CAS 2012年第8期2148-2156,共9页
A new air-water dual source heat pump water heater with heat recovery is proposed.The heat pump system can heat water by using a single air source,a single water source,or air-water dual sources.The water is first pre... A new air-water dual source heat pump water heater with heat recovery is proposed.The heat pump system can heat water by using a single air source,a single water source,or air-water dual sources.The water is first pre-heated by waste hot water,then heated by the heat pump.Waste heat is recovered by first preheating the cold water and as water source of the heat pump.According to the correlated formulas of the coefficient of performance of air-source heat pump and water-source heat pump,and the gain coefficient of heat recovery-preheater,the formulas for the coefficient of performance of heat pump in six operating modes are obtained by using the dimensionless correspondence analysis method.The system characteristics of heat absorption and release associated with the heat recovery-preheater are analyzed at different working conditions.The developed approaches can provide reference for the optimization of the operating modes and parameters.The results of analysis and experiments show that the coefficient of performance of the device can reach 4-5.5 in winter,twice as much as air source heat pump water heater.The utilization of waste heat in the proposed system is higher than that in the system which only uses waste water to preheating or as heat source.Thus,the effect of energy saving of the new system is obvious.On the other hand,the dimensionless correspondence analysis method is introduced to performance analysis of the heat pump,which also has theoretical significance and practical value. 展开更多
关键词 heat pump water heater waste heat recovery dual source heat pump correspondence analysis method performance analysis
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Experimental Study of Energy-Saving Air-Conditioner with Hot Water
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作者 CHEN Jian-bo,CHEN Dan,LU Ying(University of Shanghai for Science and Technology,Shanghai,China) 《湖南大学学报(自然科学版)》 EI CAS CSCD 北大核心 2009年第S1期75-78,共4页
Energy-saving air-conditioner with hot water is an air source heat pump air-conditioner,which can also supply hot water.The hot water is heated by a double pipe condenser connected with an air-cooled condenser in seri... Energy-saving air-conditioner with hot water is an air source heat pump air-conditioner,which can also supply hot water.The hot water is heated by a double pipe condenser connected with an air-cooled condenser in series in the system.This experiment of the energy-saving air-conditioner was carried out in the enthalpy-difference air-conditioner laboratory.The hot water temperature and the compressor's discharge and suction pressure were recorded in the working condition,where the ambient temperature was at 43 ℃,35 ℃,21 ℃,7 ℃,and 2 ℃ separately.The results showed that the system operated stably and reliably.This system can supply 240 L hot water at 50 ℃ in the whole year,and its coefficience of performance(COP)is much higher than the conventional air source heat pump system.Its energy conservation was proved by comparing the thermal efficiency with other sourece water heaters. 展开更多
关键词 AIR-CONDITIONING water heaterS energy CONSERVATION heat pump systems thermal efficiency
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家用空气源热泵热水器微通道冷凝器仿真研究
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作者 许树学 王家正 +3 位作者 勾倩倩 赵谱 卢天宇 马国远 《北京工业大学学报》 CAS CSCD 北大核心 2024年第5期600-609,共10页
为提升家用空气源热泵热水器水箱外微通道冷凝器的性能,建立了家用空气源热泵热水器水箱外微通道冷凝器的准稳态模型,实验验证结果显示模型误差能控制在±9%以内。依据模型对微通道冷凝器的换热量、换热系数、压降等性能进行仿真研... 为提升家用空气源热泵热水器水箱外微通道冷凝器的性能,建立了家用空气源热泵热水器水箱外微通道冷凝器的准稳态模型,实验验证结果显示模型误差能控制在±9%以内。依据模型对微通道冷凝器的换热量、换热系数、压降等性能进行仿真研究。结果发现,微通道冷凝器为四流程时能够减小压降并保证换热量满足需要;关键参数微通道截面的最佳尺寸在1.6~2.6 mm^(2)系统性能最优,同时扁管内微通道数应控制在16~24根。研究结果为家用空气源热泵热水器微通道冷凝器的设计提供借鉴。 展开更多
关键词 热泵热水器 微通道冷凝器 数学模型 仿真 制热量 优化
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风机转速对CO_(2)空气源热泵热水器性能影响的试验研究
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作者 王栋 蒋天成 +3 位作者 邓森森 陶银双 李梦雪 鲁月红 《流体机械》 CSCD 北大核心 2024年第6期17-24,共8页
为了定量探究CO_(2)空气源热泵热水器系统性能随风机转速的变化规律,通过试验研究了不同工况下,改变风机转速对排气压力、过热度、CO_(2)质量流量、系统制热量、系统总功耗以及制热性能系数COP的影响;利用响应曲面法对试验进行了优化分... 为了定量探究CO_(2)空气源热泵热水器系统性能随风机转速的变化规律,通过试验研究了不同工况下,改变风机转速对排气压力、过热度、CO_(2)质量流量、系统制热量、系统总功耗以及制热性能系数COP的影响;利用响应曲面法对试验进行了优化分析,同时利用试验数据拟合了COP回归模型,并进行可信度分析;通过回归模型预测了系统的最优运行工况并进行试验验证。结果表明:在压缩机频率和电子膨胀阀(EEV)开度一定的情况下,存在着最佳风机转速;在45~85 Hz范围内,随着压缩机频率的提高,COP先增大后减小,增幅最高可达8.97%,各频率下COP最大时对应的最佳风机转速不断减小;随着EEV开度在35%~55%范围内不断增大,COP先增大后减小,增幅可达到6.6%,各EEV开度下COP最大时对应的最佳风机转速不断增大;当压缩机频率为65 Hz、EEV开度为50%时,对应的最佳风机转速为1000 r/min,系统COP达到峰值(4.09)。本文所拟合的COP回归模型最大误差为4.5%;预测系统最优运行工况为:压缩机频率68 Hz、EEV开度52%、风机转速956 r/min,此时系统COP最大,可达到4.29,预测误差为3.7%。本研究可为CO_(2)空气源热泵热水器系统保持高效运行提供理论指导。 展开更多
关键词 CO_(2)热泵热水器 风机转速 系统性能 试验研究
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带气液调配蒸发器空气源热泵热水器的实验研究
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作者 温学诚 陈健勇 +4 位作者 陈颖 罗向龙 梁颖宗 何嘉城 杨智 《制冷学报》 CAS CSCD 北大核心 2024年第5期123-129,144,共8页
气液调配蒸发器通过调整干度和质量流速实现传热性能提升。分别将两个管程布置为4-2-4-6-4(蒸发器1)和5-4-3-4-4(蒸发器2)的气液调配蒸发器用于热泵热水器中(分别为系统A和系统B)进行实验,并进行了对比研究。结果表明:相比于蒸发器1,蒸... 气液调配蒸发器通过调整干度和质量流速实现传热性能提升。分别将两个管程布置为4-2-4-6-4(蒸发器1)和5-4-3-4-4(蒸发器2)的气液调配蒸发器用于热泵热水器中(分别为系统A和系统B)进行实验,并进行了对比研究。结果表明:相比于蒸发器1,蒸发器2制冷剂分布更均匀,且蒸发器侧压降减小了10.91%。在名义工况下,相比于系统A,系统B制热量减少1.69%,功率也减少1.45%,两个系统COP基本相同。系统B的排气压力比系统A小26.35~84.78 kPa,更有利于压缩机的安全运行;在不同的环境温度下,系统B的压缩机功耗均小于系统A,当环境温度为30℃时,系统B的性能比系统A提高了2.1%。 展开更多
关键词 空气源热泵热水器 蒸发器管程布置 压降 制冷剂分配
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采用电子膨胀阀和毛细管的空气源热泵热水器性能对比实验研究
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作者 勾倩倩 许树学 +3 位作者 朱万朋 王家正 孙尚瑜 马国远 《暖通空调》 2024年第6期119-125,共7页
为研究不同节流方式对空气源热泵热水器性能的影响,分别以毛细管(CAP)和电子膨胀阀(EEV)作为节流元件研制了样机,通过实验对比研究其运行特征。结果表明:CAP系统的吸气过热度能稳定在1℃左右;CAP系统的排气温度相对更低,约比EEV系统低15... 为研究不同节流方式对空气源热泵热水器性能的影响,分别以毛细管(CAP)和电子膨胀阀(EEV)作为节流元件研制了样机,通过实验对比研究其运行特征。结果表明:CAP系统的吸气过热度能稳定在1℃左右;CAP系统的排气温度相对更低,约比EEV系统低15℃;加热同样一箱水,CAP系统的制热速度更快;EEV系统的COP和全年性能系数(APF)均高于CAP系统,但在名义工况下CAP系统具有与EEV系统相当的制热COP。综合考虑制热性能及初投资等因素,可根据需要优先采用毛细管作为节流装置。 展开更多
关键词 空气源热泵热水器 电子膨胀阀 毛细管 节流 全年性能系数(APF) 性能系数(COP) 实验研究
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一款改进的家用热回收空调热力性能实验研究
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作者 王文璟 白卫星 《芜湖职业技术学院学报》 2024年第1期39-43,共5页
为提高家用空调器利用率并节能减排,通过改进得到一款具有制冷、供暖、全天候供热水和冷凝热回收制取热水四种功能的热回收空调器。热力性能实验结果表明,改进后的热回收空调器各模式运行可靠,节能效果显著。
关键词 空调 冷凝热回收 热泵热水器 节能 性能系数 毛细管
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循环加热式热泵热水机试验装置用水泵对测试结果准确性的影响
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作者 陈海宁 潘李奎 余桢 《制冷与空调》 2024年第10期32-35,共4页
在循环加热式热泵热水机(不带水泵)制热量测试系统中,水泵的补热会影响测试结果的准确性。本文分析闭式系统中的水经水泵做功后温度升高的原理,测试装置的标定试验结果表明,水泵功率的变化对标定结果影响的偏差为0%~7.3%,水泵功率的变... 在循环加热式热泵热水机(不带水泵)制热量测试系统中,水泵的补热会影响测试结果的准确性。本文分析闭式系统中的水经水泵做功后温度升高的原理,测试装置的标定试验结果表明,水泵功率的变化对标定结果影响的偏差为0%~7.3%,水泵功率的变化使得机组的制热量和能效测试结果均出现3.1%的偏差,指出重新标定试验装置可以使测试结果准确度控制在±0.5%以内。 展开更多
关键词 热泵热水机 制热量 性能系数 水泵 试验 准确性
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热泵热水器不锈钢内胆激光焊接工艺应用研究
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作者 杨波 张恩捷 《日用电器》 2024年第8期147-150,共4页
通过工艺实验研究可调环模激光焊接方法应用于热泵热水器不锈钢水箱内胆焊接可行性,在不改变现有内胆制造过程的前提下,提出一套适应热泵热水器不锈钢内胆的激光焊接工艺,提高热泵热水器不锈钢内胆焊接效率和焊接质量。经验证采用可调... 通过工艺实验研究可调环模激光焊接方法应用于热泵热水器不锈钢水箱内胆焊接可行性,在不改变现有内胆制造过程的前提下,提出一套适应热泵热水器不锈钢内胆的激光焊接工艺,提高热泵热水器不锈钢内胆焊接效率和焊接质量。经验证采用可调环模激光焊接方法,正离焦量为20 mm,外环激光能量占比达到30%时,可满足热泵热水器不锈钢水箱内胆可靠稳定焊接。增加反射预热板,可有效改善焊缝成形,提高激光能量利用率。 展开更多
关键词 不锈钢 热泵热水器 水箱内胆 激光焊接
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GB/T21362-2023《商业或工业用及类似用途热泵热水机》标准解析
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作者 陈妙阳 《日用电器》 2024年第5期17-20,共4页
GB/T21362-2023《商业或工业用及类似用途热泵热水机》标准于2023年3月17日发布,于2023年10月1日起实施,替代原标准GB/T21362-2008。新版标准在结构、编辑性和技术内容方面做了重大调整,本文主要对GB/T21362-2023标准的修订内容及新旧... GB/T21362-2023《商业或工业用及类似用途热泵热水机》标准于2023年3月17日发布,于2023年10月1日起实施,替代原标准GB/T21362-2008。新版标准在结构、编辑性和技术内容方面做了重大调整,本文主要对GB/T21362-2023标准的修订内容及新旧标准的主要差异进行解析,有助于企业技术人员和检测机构学习掌握新的测试方法。 展开更多
关键词 热泵热水机 试验方法 新旧版本 差异分析
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家用和类似用途空气源热泵热水器热工性能测试分析
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作者 张成彦 黄晨 +2 位作者 丁东旭 郭建 包继虎 《制冷与空调》 2024年第5期47-51,共5页
为更好地理解GB/T 23137—2020《家用和类似用途热泵热水器》,并准确测试空气源热泵热水器的热工性能,对空气源热泵热水器性能测试和计算方法进行解读。首先,为保证空气源热泵热水器性能测试的准确性,建议对标准中公式的疏漏进行修正,... 为更好地理解GB/T 23137—2020《家用和类似用途热泵热水器》,并准确测试空气源热泵热水器的热工性能,对空气源热泵热水器性能测试和计算方法进行解读。首先,为保证空气源热泵热水器性能测试的准确性,建议对标准中公式的疏漏进行修正,标准中对同一物理量的定义和单位应统一,同时,考虑大气压对测试结果的影响。其次,分析空气源热泵热水器热工性能相关参数的计算方法,指出采用单一发生时间获得的性能指标对热泵热水器进行评价存在局限性。最后,指出应及时更新空气源热泵热水器的能效标准或产品标准,使其评价机制保持一致。 展开更多
关键词 空气源热泵热水器 家用和类似用途 制热性能 全年能源消耗效率
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相变储热型热泵热水器的设计及实验研究 被引量:20
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作者 张海峰 王勤 +1 位作者 陈光明 王永川 《制冷学报》 CAS CSCD 北大核心 2005年第3期22-25,共4页
介绍了一种具有相变储热功能的热泵型热水器,阐述了其结构、原理。利用相变材料放出潜热提高进水温度,在不需用热水时,压缩机不必停机从而加热融化相变材料以储存热量。依据设计方案,制作实验样机,并进行初步测试,实验结果表明了该方案... 介绍了一种具有相变储热功能的热泵型热水器,阐述了其结构、原理。利用相变材料放出潜热提高进水温度,在不需用热水时,压缩机不必停机从而加热融化相变材料以储存热量。依据设计方案,制作实验样机,并进行初步测试,实验结果表明了该方案的可行性和优越性。此外,通过与其它类型热水器的对比分析,展示了其经济优越性。 展开更多
关键词 热工学 热泵 热水器 蓄热 经济性 热泵热水器 实验样机 相变储热 设计 热型
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空调—热水器一体机制冷兼制热水模式的性能模拟和实验分析 被引量:52
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作者 季杰 裴刚 +2 位作者 何伟 董军 赵卫平 《暖通空调》 北大核心 2003年第2期19-23,共5页
简要介绍了空调—热水器一体机的基本原理和构成 ,对其在制冷兼制热水模式下的运行工况作了数值模拟和实验分析。结果表明一体机节能效果明显 ,制冷和制热水同时协调运行时 ,其系统能效比平均可达 3.5。给出了一些重要参数的模拟结果和... 简要介绍了空调—热水器一体机的基本原理和构成 ,对其在制冷兼制热水模式下的运行工况作了数值模拟和实验分析。结果表明一体机节能效果明显 ,制冷和制热水同时协调运行时 ,其系统能效比平均可达 3.5。给出了一些重要参数的模拟结果和实验结果的对比曲线 。 展开更多
关键词 空调-热水器一体机 制冷 热水模式 节能 热泵
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低温环境下空气源热泵的研究现状及展望 被引量:104
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作者 王沣浩 王志华 +1 位作者 郑煜鑫 郝吉波 《制冷学报》 CAS CSCD 北大核心 2013年第5期47-54,共8页
空气源热泵作为一种高效、节能环保装置,具有广泛的应用前景和市场价值。但其在低温环境下性能不稳定,制热效率过低,抑制了空气源热泵产品的推广和应用。通过总结国内外学者对改善系统在低温环境下适应性所做的研究,分析了空气源热泵在... 空气源热泵作为一种高效、节能环保装置,具有广泛的应用前景和市场价值。但其在低温环境下性能不稳定,制热效率过低,抑制了空气源热泵产品的推广和应用。通过总结国内外学者对改善系统在低温环境下适应性所做的研究,分析了空气源热泵在低温环境下存在的弊端,并根据最新研究进展,分别从新型工质替代问题,相变材料与空气源热泵的结合,新型热泵循环系统的开发方面对今后的研究方向作出展望。 展开更多
关键词 空气源热泵 热水器 低温适应性
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空调-热水器一体机单独制热水模式的性能模拟和实验分析 被引量:17
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作者 季杰 裴刚 +1 位作者 何伟 董军 《暖通空调》 北大核心 2004年第12期96-98,共3页
简要介绍了空调一热水器一体机的基本原理和构成,对其在独立制热水模式下的运行工况进行了数值模拟和实验分析。结果表明,该设备具有明显的节能效果,但系统的功率和COP随着水温的升高而下降;该设备对压缩机性能的要求比普通空调器要高。
关键词 空调器 热水器 制热 性能模拟 运行工况 节能效果 实验分析 压缩机 功率 COP
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