热管余热锅炉在烧结厂的应用

采用热管余热锅炉回收烧结冷却机废气带走的25%~30%的热量。热管余热锅炉采用高效的热管传热器件,热效率高,结构紧凑,水的加热和汽化均在烟道外进行,不同于一般的余热锅炉。从热管分析入手,论述在烧结机冷却系统中的具体应用和设计参数的确定。热管余热锅炉也可广泛应用在竖炉余热回收、水泥窑余热回收、冶金炉余热回收等系统中。     

热管技术在玻璃窑炉上的应用

本文结合工程应用阐述了热管余热锅炉的工作原理，着重介绍了热管余热锅炉在浮法玻璃窑上的成功应用，并与因管式余热锅炉比较，说明了热管余热锅炉的优越性。     

热管式余热锅炉在电弧炉烟气余热回收中的应用

热管式余热锅炉应用热管作为传热元件,吸收较高温度的烟气余热用来产生蒸汽,所产生的蒸汽可并入蒸汽管网(需达到管网压力),也可用于发电。热管式余热锅炉已被化工、冶金、动力等领域中应用,介绍了热管式余热锅炉在电弧炉烟气余热回收中的应用。     

热管式余热锅炉的优化设计与实践

在设计热管式余热锅炉时，我们常常采用能量平衡的方法。单纯采用能量平衡方法设计时，对于遇到的众多影响因素、难于实现优化设计。本文给出了热管式余热锅炉Yong效率的计算表达式，采用Yong效率为约束的能量平衡方法设计热管式余热锅炉，达到优化设计的目的。在工程实际应用中取得了较好的效果。     

热管式余热锅炉的优化设计与实践

单纯采用能量平衡方法设计余热锅炉时 ,对于遇到的众多影响因素 ,难于实现对众多影响因素的优化设计。给出了热管式余热锅炉效率的计算表达式 ,采用效率为约束的能量平衡方法设计热管式余热锅炉 ,从而达到优化设计的目的 ,并且在工程实际应用中取得了较好的效果     

热管式余热锅炉的优化设计与实践

给出了热管式余热锅炉效率的计算表达式,采用效率为约束的能量平衡方法设计热管式余热锅炉,从而达到优化设计的目的。并且在工程实际应用中取得了较好的效果。     

热管技术在有机热载体锅炉烟气余热回收上的应用

对热管余热回收技术的原理、工程应用进行简要描述，列举了在有机热载体锅炉中，利用热管余热回收技术回收烟气余热的主要用途和工程实例、效益分析。     

电弧炉烟气余热回收利用系统设计

主要介绍了电弧炉烟气余热的特点,余热回收利用技术方案的选择,余热锅炉的结构原理和热管余热锅炉设计。改造后经过运行表明,改造取得了较好的经济效益和社会效益。     

9台1．25t／h热管式余热锅炉及自控系统的设计

首先简要介绍了热管的原理,然后介绍了热管式余热锅炉的结构和特点,最后对热管式余热锅炉自动控制系统进行探讨。     

热管传热技术在硅钢常化酸洗机组中的应用

简要介绍热管传热技术的原理、发展以及热管换热器的性能,并以重力式热管换热器(热管式余热锅炉)应用在冶金行业硅钢常化酸洗机组中的余热回收为例,简单分析了此套余热回收系统所带来的效益。     

余热回收用热管及热管式换热器的研究

简要介绍了热管及热管式换热器的工作原理,热管式换热器在工业余热回收中的应用,以及热管式换热器运行过程中防止积灰和低温腐蚀等问题的有效措施。     

Convection Condensation Heat Transfer of Steam-Air Mixture With Heat Pipe Heat Exchanger

A heat pipe heat exchanger (HPHE) was used to investigate the heat transfer performance of steam-air mixture condensation, analogous to the dew condensation of flue gas, when the steam volume fraction ranged from 0 to 20%, and the inlet temperature of steam-air mixture varied from 70 to 120°C. Self-assembled monolayers (SAMs) treatment with n-octadecyl mercaptan was adopted to modify the condensation surface of the heat pipe. The comparisons were conducted to examine the influence of SAMs on condensation heat transfer of steam-air mixture vapor. The results indicate that the convection condensation heat transfer coefficient increases with the increase of steam volume fraction and Re number of the steam-air mixture. As the inlet temperature increases, the heat transfer coefficient decreases accordingly. The heat transfer performance can be improved by the SAMs surface, with a heat transfer enhancement ratio up to 1.6 at a condition of 20% of the steam volume fraction and 1500 Re number.     

管壳式换热器的换热管强化传热技术浅述

介绍了管壳式换热器的换热管强化传热技术,分析了各自的原理、优缺点及推荐的使用场合。采用节能技术的换热器不仅提高了能源的利用率,而且减少了金属材料的消耗,对化工行业提高经济效益具有重要意义。     

利用工业低品位余热的高温热泵供暖系统

实现建筑节能目标任重道远,传统的燃烧矿物质燃料的锅炉供暖方式不仅浪费能源,而且严重污染环境.这里介绍一种全新的利用工业低温余热的高温热泵供暖方案.它不仅使供暖环境实现零污染,而且运行费用是目前各供暖费用中最低的.这种方式必将是我国北方城市热网的最有效的补充.     

热管余热回收器传热计算方法研究

余热回收器设备在结构上的关键部件为高温和低温受热面。因此,对于余热回收器的设计来说,设计的主要难点集中在传热机理、传热模型、高温介质混合的特性研究等方面。本文主要介绍余热回收器换热管内有多种高温介质混合、换热管外有相变过程的传热计算方法,为今后类似余热回收器的设计提供参考。     

Heat Transfer Studies of a Heat Pipe

The present investigation reports a theoretical and experimental study of a wire screen heat pipe, the evaporator section of which is subjected to forced convective heating and the condenser section to natural convective cooling in air. The theoretical study deals with the development of an analytical model based on thermal resistance network approach. The model computes thermal resistances at the external surface of the evaporator and condenser as well as inside the heat pipe. A test rig has been developed to evaluate the thermal performance of the heat pipe. The effects of operating parameters (i.e., tilt angle of the heat pipe and heating fluid inlet temperature at the evaporator) have been experimentally studied. Experimental results have been used to compare the analytical model. The heat transfer coefficients predicted by the model at the external surface of the evaporator and condenser are reasonably in agreement with experimental results.     

热管式热流计的开发研制

通过对传统热流计缺点的分析,研究了新型热管式热流计的结构尺寸和设计准则,并通过现场测试证实了此种热流计的应用可行性,图2参3     

Heat Pipe Finned Heat Exchanger for Heat Recovery: Experimental Results and Modeling

This paper presents an experimental and theoretical analysis of a 6-row horizontal microfin Heat Pipe Finned Heat Exchanger (HPFHE) used for energy recovery purposes inside an air conditioning unit. The experimental campaign investigated both the summer and the winter conditions for European countries by varying the operating conditions at the inlet of the HPFHE. New experimental tests are presented for the identification of low – global warming potential refrigerants, environmental friendly substitutes of the more traditional HFC134a. The results showed the interesting heat transfer capabilities of HFC152a as an alternative HPFHE working fluid. A simulation model previously developed by present authors was validated against the new experimental data collected and then used to simulate the thermal performance of the HPFHE under different operating test conditions, in order to assess the potentiality of seasonal energy savings with HFC152a.     

分区蓄热水箱应用于太阳能热泵中的蓄放热分析

针对冬季太阳能辐射弱且不稳定的特点,提出一种应用于太阳能热泵的分区蓄热水箱,以水泵驱动蓄热水箱循环区与蓄热区的热量传递,并运用热力学原理对水箱循环区与蓄热区的运行状况进行模拟,分析了水箱两区在不同水泵体积流量下的逐时温度变化并与整体式水箱进行对比。结果表明,分区蓄热水箱克服了整体式水箱的热惰性,启动灵活,能在较短时间内达到热泵运行的理想温度,显著提高了系统的性能。