一种太阳能家用热水器

一种太阳能家用热水器专利号ＺＬ刃２次对Ｅ．．７本实用新型涉及一种太阳能家用热水器，包括真空管集热器。水箱、进水管、出水管、三通阔和支撑架。其特征在于：它还包括吸热管和单向阎，吸热管安装在真空管集热器的输出端，所述吸热管外壁的尾部直接焊接在水箱上，水箱...     

专利信息

专利信息容积型真空管太阳能热水器本专利为一种集采光、集热和水箱于一体的容积型真空管太阳能热水器。本热水器的真空管是由内管和外管构成的开口式双层真空管，外管和内管之间为真空层，内管表面覆有太阳光谱选择性吸收膜，真空管的开口端装设密封帽，热水管和冷水管一...     

专利信息

专利信息分体式太阳热水器本实用新型为一种能够全天候使用的分体式太阳热水器。它的实现过程是：采用分体式结构，太阳集热器为真空管式，真空管横置，即真空管水平方向插入托管和热汇流管中；太阳集热器为壁挂式结构，安装在居室外向阳墙壁上，储水箱安装在室内，在储水...     

直通式太阳能真空管集热器热性能分析

通过对直通式太阳能真空管传热模型的分析,在导出单根带翅片与不带翅片的直通式太阳能真空管的总热损失系数、效率因子、热迁移因子和瞬时效率的基础上,建立了直通式太阳能真空管的性能预测模型;针对由多根并联、顺流布置的直通式太阳能真空管组成的平行流集热器,对比计算了带翅片与不带翅片两种真空管及由其组成的集热器的瞬时效率。结果表明,在工质流量,进口温度,环境温度等条件相同的情况下带翅片的直通式太阳能真空管以及由其构成的集热器的瞬时效率分别比不带翅片的太阳能真空管及集热器提高很多;并联直通式太阳能真空管间的流量分配不均匀性致使集热器的整体效率低于单根真空管的瞬时效率。     

具有内插管的真空管太阳能热水器性能研究

为了提高真空管集热管效率,在相同环境下,对未插内管和插有内管的玻璃真空管太阳能热水器进行了三维数值模拟。分析表明,通过在真空管中插入内管可以改善真空管内冷热水的流动和换热,提高真空管集热器的效率。对插入不同长度内插管的三组实验做了比较,结果表明,应合理选择内插管的长度。     

平板太阳能集热器如何从受冷遇迈向发展

20世纪80年代曾占我国太阳能热水器统治地位的平板太阳能集热器、热水器在近十多年内,已逐渐被全玻璃真空管太阳能热水器替代。市场份额逐年下降,现已降至15%左右。然而同期国外太阳能集热器市场     

海达克的黑铬情缘

中国现为世界太阳能热水器第一生产大国,目前全玻璃真空管太阳能热水器仍然占据中国太阳能热水器市场的大部江山,但中国太阳能热水器真正实现产业化却是从平板太阳能热水器开始的。在90年代末,由于全玻璃真空管太阳能热水器符合中国国情,契合中国消费者需求,得以在中国大规模推广,从此一度占据市场主流的平板太阳能集热器、热水器开始走下坡路,市场份额逐年下降,其技术进步也出现停滞不前的局面。自2000年以后,平板集热器为核心部件的太阳能系统逐渐淡出了人们的视线。     

专利信息

太阳能利用直接水循环式阳台壁挂太阳能热水器专利申请号:201120509817.3公开号:CN202361661U申请人:山东海纳德太阳能有限公司本实用新型为一种直接水循环式阳台壁挂太阳能热水器。它包括储水箱和集热器。其特征为:所述集热器包括多个横向设置的集热真空管和集热器边框支架,每个集热真空管的内部装有一根U型不锈钢波纹管,多个U型不锈钢波纹管的管     

专利信息

太阳能热利用分体循环增压式太阳能热水器专利申请号:CN200520001396.8公开号:CN2773558申请人:北京桑尼玻璃制品有限公司本实用新型为一种分体循环增压式太阳能热水器,其特征为:由集成水箱、电加热、水箱、浮球、控制杆、溢流管、回水管、集热器、上水管、喷淋管、水流开关、四通、电磁阀、单流阀、增压循环     

专利信息

廉价真空管太阳能集热器本发明是一种利用太阳能来加热水、空气、溶液或其它流体的廉价真空管太阳能集热器。本发明的实现过程是:将多根廉价太阳能真空集热管并联,通过橡皮软管分别与上联管和下联管联通,利用支架支承,并用压条压住,支架固定在带或不带边框的托板或托架上,在上联管的一端安装流体流入接口,在非真空的管子上安装保温盒,制成廉价真空管太阳能集热器。专利号 88100124 申请人江西省科学院能源研究所     

真空玻璃盖板热管平板式太阳能热水器的研制

介绍了研究成功的采用真空玻璃盖板的热管平板式太阳能热水器,测试了其性能,并与全玻璃真空管太阳能热水器和蜂窝热管太阳能热水器进行了比较。实测得到,真空玻璃盖板热管平板式热水器的日平均效率比后两分别大13．3％和6．5％,平均热损系数比后两分别小52．5％和21．5％。真空玻璃盖板平板式太阳能热水器性能优越,有很好的应用前景。     

蜂窝热管平板式太阳能热水器的实验研究

把蜂窝技术和热管技术结合起来应用于平板式太阳能热水器，可以大大减少热损失，提高日平均效率。经多次实验证明，蜂窝热管平板式太阳能热水器的日平均效率可以比真空管式热水器的高，热损系数则要小很多，具有推广应用价值。     

Experimental investigation on thermal performance of thermosyphon flat-plate solar water heater with a mantle heat exchanger

The thermal performance of thermosyphon flat-plate solar water heater with a mantle heat exchanger was investigated to show its applicability in China. The effect on the performance of the collector of using a heat exchanger between the collector and the tank was analyzed. A “heat exchanger penalty factor” for the system was determined and energy balance equation in the system was presented. Outdoor tests of thermal performance of the thermosyphon flat-plate solar water heater with a mantle heat exchanger were taken in Kunming, China. Experimental results show that mean daily efficiency of the thermosyphon flat plate solar water heater with a mantle heat exchanger with 10 mm gap can reach up to 50%, which is lower than that of a thermosyphon flat-plate solar water heater without heat exchanger, but higher than that of a all-glass evacuated tubular solar water heater.     

Performance analysis on a novel micro‐channel heat pipe evacuated tube solar collector‐incorporated thermoelectric generation

In China, because of the emergence of a large number of high‐rise buildings, the solar hot water heater system often uses the balcony wall‐mounted method for installation. The thermoelectric energy converter is proposed as one of the possible technologies to incorporate solar water heater to produce electricity for building application. In this paper, the conceptual development and theoretical analysis of a novel micro‐channel heat pipe evacuated tube solar collector‐incorporated thermoelectric generation are all proposed. The new system takes into account many advantages, including the high heat transfer, low convective heat loss, and low contact thermal resistance. The exergy analysis method based on the second law of thermodynamics is also introduced to evaluate the performance of this system. The results show that a novel micro‐channel heat pipe evacuated tube solar collector‐incorporated thermoelectric generation has a high thermal performance with addition of electricity production. Copyright © 2016 John Wiley & Sons, Ltd.     

全玻璃真空管太阳能空气集热器热性能试验方法研究

全玻璃真空管空气集热器是一种热损较小的太阳能空气加热装置,该文对该类集热器热评价方法进行了研究,并对集热器的时间常数,热延迟常数,角系数修正因子及瞬时热效率的实验方法进行了初步的实验研究,研究表明,用热延迟常数比时间常数能更好地反映真空管集热器的性性能,真空管集热器的角系修正因子在垂直入射时最小。     

Model-based design and analysis of heat pipe working fluid for optimal performance in a concentric evacuated tube solar water heater

In this study, a semi-dynamic model of a concentric evacuated tube solar water heater is developed to investigate the effect of working fluid design on technical and economic performance of a typical solar water heater in a household located at Sydney, Australia. The model is validated against experimental data. The effects of using water, ammonia, acetone, methanol, and pentane as working fluids of the built-in heat pipe are discussed comparatively during a typical day of operation. Water is identified as the best working fluid amongst the others. The variation of thermal resistance and critical heat flux of the heat pipes due to change in weather condition is presented and discussed. Three hypothetical working fluids are then proposed for further analysis which led to a working fluid design superior to water in performance. It is shown that the performance of the solar water heater can be significantly enhanced up to 28% and 50% from economical and technical points of view, respectively.     

CPC内聚光式热管集热管温度特性研究

为提高太阳能热水系统的输出温度,将CPC聚光技术应用于热管式真空集热管中,开发了一种新型的CPC内聚光式热管集热管。对该集热管建立数学模型,模拟计算其传热过程,获得了导热肋片温度、热管冷凝段温度等参数随太阳辐射强度的变化规律,并通过试验验证了数学模型的可靠性;与常规热管式真空管集热管传热特性相对比,证实了该集热管可大幅提高太阳能热水器输出温度。     

Optical evaluation and analysis of an internal low-concentrated evacuated tube heat pipe solar collector for powering solar air-conditioning systems

An optical evaluation and analysis of an internal low-concentrating evacuated tube heat pipe solar collector designed to enhance the collection of solar radiation for medium temperature applications is presented in this paper. The internal low-concentrating evacuated tube heat pipe solar collector was designed with an acceptance angle of 20° given a geometrical concentration ratio of 2.92. The truncation of the upper part of the reflector giving a geometrical concentration ratio of 1.95 was carried and enabled the internal low-concentrating evacuated tube heat pipe collector to be enclosed by a borosilicate glass tube with 100 mm and 93 mm outer and inner diameters, respectively. Ray trace analysis at different transverse angles determines optical efficiencies, related optical losses and flux distribution on the absorber of the internal low-concentrating evacuated tube heat pipe solar collector. A detailed two dimensional ray trace techniques considering only the direct insolation component predicated overall ray’s acceptance of 93.72% and optical efficiency of 79.13% from transverse angles of 0° to 20°.     

Fabrication and testing of a non-glass vacuum-tube collector for solar energy utilization

An evacuated tubular solar collector was fabricated from acrylics for improved resistance to shattering. A plasmatron was employed to apply a thin gas-barrier coating to the surfaces of the plastic tube to prevent/alleviate gas infiltration. Experiments were conducted to investigate the effect of vacuum level on the performance of the non-glass vacuum-tube solar collector. Inserted in the evacuated tube was a finned heat pipe for solar energy collection and heat transfer to a water tank. Time variations of temperatures on the heat pipe surface and in the water tank were recorded and analyzed for different degrees of vacuum in the collector. The steady-state temperature of the non-glass collector was compared to that of a commercial glass vacuum-tube collector to assess the feasibility of the use of evacuated plastic tubes for solar energy collection. A simple analytical model was also developed to assist in understanding and analyzing the transient behavior and heat losses of the vacuum-tube solar collector.     

全玻璃真空管太阳能热水器影响因素的数值模拟研究

利用热能工程专业基础知识和场协同原理,结合计算流体力学配套商业软件,对反光板、倾斜角度、辐照强度、集热管尺寸和水箱大小等因素,影响全玻璃真空管太阳能热水器的传热传质特性进行了数值模拟研究和可视化分析,通过数值模拟研究给出了全玻璃真空管太阳能热水器的的最佳条件。