电阻炉炉膛内的辐射换热分析

本文通过对电阻炉炉膛内的辐射换热分析,得出:1)提高炉壁内表面黑度,并不能强化炉内的辐射换热,亦达不到节能的目的;2)提高电热元件的黑度(对电热元件表面涂以高黑度[ε≥0.95]涂料),可有效地强化炉内的辐射换热,同时可节能;3)增强炉壁的保温性,对强化炉内辐射换热效果甚微等等。     

纳米高温节能涂料在乙烯裂解炉中的应用研究

将纳米高温节能涂料应用于石油化工中的乙烯裂解炉,通过正平衡法对裂解炉进行了热效率计算,并分析比较了喷涂纳米高温节能涂料前后裂解炉整体热效率变化情况。计算结果及分析表明:该型涂料可提高炉内参与辐射传热的物体表面辐射系数,强化气一固辐射传热,改善炉内换热过程,提高裂解炉整体热效率达2.86%,有利于乙烯裂解系统的节能,降低企业生产成本和减少碳排放。     

高温辐射涂料在加热炉上的应用

本文在介绍高温辐射涂料节能机理及性能的基础上，详述了高温辐射涂料在线材加热炉上的应用情况和使用效果。其中包括高温辐射涂料的节能机理，化学组成及物理性能。作者认为，高温辐射涂料能强化炉内传热、提高炉窑热效率、节约能源、且能延长炉体使用寿命。     

工业炉强辐射传热节能新技术

阐述了在工业炉内设置强辐射元件，取得了强辐射传热节能的效果。该元件将炉内漫射状的热射线调控为指向工件的射线束，以便将热量直接传递给工件，与ＲＸ３节能型的箱工热自理炉相比，实施本技术后节电率可达２０－３０％，工业黑体的全射综达０．９６。     

远红外辐射涂料节能原理与应用

阐述了远红外辐射涂料的特点及使用方法，以传热理论为基础，分析了远红外辐射涂料强化加热设备传热过程的原理。结合应用实际，论述了远红外辐射节能涂料的应用前景。     

电厂锅炉黑体强化辐射节能技术的探讨

水冷壁喷涂黑体强化辐射节能材料,可全面平衡锅炉受热面的换热比例,强化炉膛辐射换热能力,优化锅炉运行工况。主要表现在减轻锅炉受热面结焦程度、不挂焦或不结大焦,降低飞灰可燃物,降低减温水量,有效防止过热器、再热器超温,达到节能目的。     

高温红外辐射涂料的研制及其应用

介绍一种用于高温工业炉窑内衬表面的优质红外辐射节能涂料，其在常温和高温，在全波段和低波段均有很好的辐射性能，已应用于多家企业，取得了较好的节能效果。     

表面涂装的辐射加热

以辐射加热为主完成表面涂装的热固化,既可缩短加热时间,减少产品电能单耗,又可作到被烘工件受热均匀,提高产品质量。本文介绍了这种加热技术和方法。     

谈工业电炉的节能问题——与杨益华、周建初两同志讨论

本刊1989年第2期上刊载了杨益华、周建初两位同志的题为“工业电阻炉节能技术改造”的文章。该文谈了电阻炉节能的几个措施,但主要强调提高向工件辐射传热来达到节能的目的。文中表3列出了五台RJX型及RJJ型老式电阻炉改造前后的效果,从表中数据来看,确实有效果,令人可信。因为用QN-0.6     

高温红外辐射涂料的研制及其节能效果

以MnO2、Fe2O3、CuO、Co2O3等过渡金属氧化物经高温固相反应形成尖晶石结构的红外陶瓷粉料,然后与硅酸盐粘接剂混合制备出红外辐射节能涂料。采用XRD、红外辐射测量仪等对材料的结构和理化性能进行了表征。通过实验数据的分析,研究了高温红外辐射节能涂料的节能效果。结果表明,涂层具有良好的红外辐射性能,全波段辐射率最高达0.90。在热风炉高铝砖耐火材料表面使用该高温红外辐射节能涂料后,在实验条件为600℃下蓄热量提高5%,1 200℃时蓄热量提高21%。涂覆红外辐射节能涂料后不锈钢容器的吸热和热交换能力明显增加,能耗可降低28%左右。     

碳素晶体地面低温辐射采暖及比较

分析比较了碳素晶体地面低温辐射采暖系统与热泵空调及其他两种地面辐射采暖系统，并针对空调采暖如何更环保、节能和舒适进行阐述，强调了采用环保节能产品的必要性。     

A Comprehensive Evaluation on Energy,Economic and Environmental Performance of the Trombe Wall during the Heating Season

Trombe wall is a passive building energy saving technology that uses solar energy to reduce buildings' heating load and adjust indoor thermal environment. In recent years, much research has been done to increase the thermal efficiency of Trombe wall, but little is focused on the evaluation of Trombe wall from energy, economic and environmental aspects comprehensively. Based on the thermal performance calculation method in ISO 52016-2:2017(E), the authors proposed a concise method to evaluate the energy, economic and environmental performance of ventilated and non-ventilated Trombe walls during a heating season. Firstly, non-iteration calculation methods were introduced for the energy evaluation of Trombe wall and conventional wall during the heating season. Then the economic and environmental evaluation models were brought out according to the energy performance of Trombe wall. After that, a residential building was presented as the case building to evaluate Trombe walls' performance in five building climate zones of China. The calculation results showed that both heating degree days and solar radiation had significant impact on the energy saving effect of Trombe walls. In comparison with non-ventilated Trombe walls, ventilated ones displayed more obvious energy saving potential in all five climate regions, which can provide averagely 62% more heating for the room in the case study. Though the heating degree days of Guangzhou(hot-summer and warm-winter zone) was the smallest in the five zones, ventilated Trombe wall in the zone had the poorest economic performance due to the scarcest solar radiation during the heating season.     

电辐射加热条件下应用高辐射率涂料的节能技术

基于辐射传热原理，分析了电辐射加热条件下高辐射率涂料的节能机理，理论分析和实际应用都已证明，高辐射率涂料在电辐射加热条件下的应用可取得比在火焰炉内更好的节能效果。高温辐射涂料今后将向着超细超薄化、成分复合化、功能多样化的方向发展。     

Sensitivity study of an opaque ventilated façade in the winter season in different climate zones in Spain

Energy efficient buildings need to take advantage of any renewable energy available. An opaque ventilated façade (OVF) is a kind of façade that absorbs solar energy and transfers it to the ventilation system. This way, the sensible ventilation load of the heating system can be reduced in the winter season. The energy saving of this system depends strongly on the weather variables, mainly solar radiation on the façade, ambient temperature and wind speed. In order to find the most convenient locations where the best OVF efficiency can be obtained, its performance has to be studied along a complete season. For this purpose in this study a sensitivity analysis with the most important weather variables was carried out and the energy saving values in 12 locations in Spain in the winter were evaluated using a numerical model previously validated with experimental data. The results showed that although the most influential weather variable was solar radiation, a combination of high temperatures and low wind speeds can also lead to important energy saving values. It was found that the most convenient locations for installing an OVF were those with low and medium winter severity climates, namely, in the southern and coastal regions of Spain (zones A3, B3, B4, C3 and C4).     

800 t挤压机底燃式燃油棒坯加热炉

随着燃烧技术的不断进步,在简易直火斜底式炉取得成功的基础上,将ＲＬ型贯通式辐射电炉改造为底燃式燃油棒坯加热炉。简要介绍了该炉的结构、加热原理及节能效果。通过近一年的实际应用表明：该炉完全能满足铝合金挤压生产的工艺及环保条件要求,而且升温速度快,少加热惯性和噪音污染,工节和使用性能均优于原辐射电炉。     

发展集中供热节约能源保护环境

集中供热是节约能源和解决烟尘污染的有效途径,可实现环境效益、经济效益、社会效益的统一.本文论述了发展集中供热的十个经验和问题.发展集中供热,要力求技术先进,经济合理,树立用户第一的思想,要加强科学管理,开展文明生产,为保护环境,节约能源,作出新贡献.     

Heating Characteristics and Economic Analysis of a Controllable On-Demand Heating System Based on Off-Peak Electricity Energy Storage

The working principle of a controllable on-demand heating system based on off-peak electricity energy storage(COHSBOEES) is as follows: the cheap off-peak electricity energy is converted into heat energy for storage in the evening, and the heat energy can be extracted on demand for heating during daytime peak or flat electricity periods. This technology can promote the smooth operation of the power grid, solve the problem of peak regulation for the electrical network, and promote renewable energy consumption. Based on the controllable on-demand heating strategy, a COHSBOEES for a heating area of 1000 m^2 was designed and built. Variations in the energy consumption and operating cost of the COHSBOEES in different heating situations were analyzed. The results showed that, off-peak electricity energy storage for heating was energy saving in comparison with central heating when the heating intensity of the COHSBOEES was 70 W/m^2 and the on-demand heating rate was less than 73.0%, and the off-peak electricity energy storage for heating was energy saving at any on-demand heating rate when the COHSBOEES had a heating intensity of 50 W/m^2. After the COHSBOEES has been running for three complete heating seasons, when the off-peak electricity price was 0.25 yuan/kW·h, the energy consumption cost of the COHSBOEES can be saved by 77.6% in comparison with central heating.     

Semi-transparent PV: Thermal performance, power generation, daylight modelling and energy saving potential in a residential application

In this research, semi-transparent PV is proposed as top light material for residential application. Using the results of field measurements, essential parameters pertaining to the power generation, thermal and optical characteristics of semi-transparent PV panels are understood. Calculation models presenting the above characteristics are developed and validated. The validated models are incorporated into Energy Plus to carry out overall energy consumption analyses in five climate regions in Japan to assess the energy saving potential of the semi-transparent PV panels. With appropriate optimization measures, the semi-transparent PV top light with 50% radiation transmission rate contributes to a maximum of 5.3% reduction in heating and cooling energy consumption compared with a standard BiPV roof. The effect of daylighting in lighting energy saving is subtle as most of the residential lighting demand occur during night-time. In the aspect of total energy consumption, net energy savings in the range of 3.0–8.7% are achieved for the 50% radiation transmission semi-transparent PV top light case relative to the base case of BiPV roof, where reduction in heating and cooling energy demand contributes most to the total energy saving.     

低温地板辐射采暖方式中水泥砂浆导热系数对传热的影响

讨论在填充层水泥砂浆的导热系数发生改变时,地板辐射采暖的各种参数的变化情况,以及节能效果比较。     

温室内设保温幕的节能效果研究

内保温幕是温室供热系统运行时的重要节能措施，其中铝箔反射型内保温幕由于其使用优点和节能效果得到了广泛的应用。本文对内保温幕，尤其是反射型内保温幕的节能机理进行了分析，给出了计算温室供热能耗以及内保温幕节能效果的数学模型，并应用此模型进行了计算，同时对计算结果进行分析，得出反射型内保温幕辐射特性对保温节能效果的影响趋势。