远红外辐射采暖在电瓷生产成形厂房中的应用

对传统采暖与远红外辐射采暖的原理及其在电瓷生产中的应用进行了比较,阐述了远红外辐射采暖系统的优点:节能、占用空间小、易控制、寿命长等。采用远红外辐射采暖后,毛坯的水分离散性相对较小,有利于毛坯水分的均匀性;毛坯阴干周期缩短了1d;毛坯平均合格率提高了1.5%,具有良好的经济效益和推广价值。     

Experimental investigation and theoretical analysis of solar heating and humidification system with desiccant rotor

In this paper, a solar heating system, which combines the technologies of evacuated tube solar air collector and rotary desiccant humidification together, has been configured, tested and modeled. The system mainly includes 15 m² solar air collectors and a desiccant air-conditioning unit. Two operation modes are designed, namely, direct solar heating mode and solar heating with desiccant humidification mode. Performance model of the system has been created in TRNSYS. The objective of this paper is to check the applicability of solar heating and evaluate the feasibility and potential of desiccant humidification for improving indoor thermal comfort. Experimental results show that the solar heating system can convert about 50% of the received solar radiation for space heating on a sunny day in winter and increases indoor temperature by about 10 °C. Compared with direct solar heating mode, solar heating with desiccant humidification can increase the fraction of the time within comfort region from about 10% to 20% for standalone solar heating and from about 30% to 60% for solar heating with auxiliary heater according to seasonal analysis. It is confirmed that solar heating with desiccant humidification is promising and worthwhile being applied to improving indoor thermal comfort in heating season.     

建筑用电热膜设计与温度的控制

电热膜作为新型的供暖设备近年来开始在国内应用。本文简要论述了低温辐射电热膜的构造和设计要点,以及电热膜温度控制方面引起关注的一些问题。     

建筑用电热膜的开发研究

电热膜是近几年在国内开始应用的供暖设备。介绍了低温辐射电热膜的构成,技术要求,设计要点,温度控制等情况。     

电热膜供暖技术的分析与思考

阐述了电热膜供暖在国内外的发展状况，对电热膜采暖技术的特点作了分析，探讨了该技术的设计、施工的方法和措施，得出该技术在未来建筑中采用的必然趋势。     

The Effects Of Air Temperature And Relative Humidity On Thermal Comfort In The Office Environment

The objective of this study was to assess the effect of air humidification and temperature on thermal comfort in sedentary office work. A blinded twelve-period cross-over trial was carried out in two similar wings of an office building, contrasting 28–39% steam humidification with no humidification, corresponding to 12–28% relative humidity. The length of each period was one working week. The study population was 169 workers who judged their thermal sensations in a weekly questionnaire. The percentage of dissatisfied was lowest when the air temperature was 22 °C. At 22 °C an increase in relative humidity raised the mean thermal sensation only slightly. At 20 °C when the air was humidified there were fewer workers who judged their air temperature as being too low. On the other hand, at 24 °C humidification increased the percentage of workers who judged their air temperature to be too high. The percentage of dissatisfied increased rapidly when the air temperature was outside of its optimum value, 22 °C. The percentage of workers complaining about draft increased when the air temperature was lower than 22 °C. Thus we consider that the temperature range from 20 to 24 °C during wintertime may be too wide without individual temperature control from the point vzew of thermal comfort. We recommend that the air temperature should be kept between 21 and 23 °C if no individual control is available. The best solution would be individual temperature control permitting adjustment of the temperature at 22 ± 2 °C.     

热管热回收空调系统的研究

阐明了一种新型热管的工作原理,对该新型热管在空调热回收系统应用进行分析,并将热管热回收空调系统与传统空调系统进行比较,分析其在空调系统中热回收性能。     

Research on seasonal indoor thermal environment and residents' control behavior of cooling and heating systems in Korea

Indoor thermal environments and residents' control behavior of cooling and heating systems were investigated in Seoul, Korea and compared with the results of previous studies. Twenty-four houses in summer, six houses in autumn and 36 houses in winter were used in this study. The measurement of temperature, humidity and air conditioner usage behavior was carried out. The clo-value, thermal comfort, sensation and basic data of the houses were also investigated. The indoor thermal environment in the summer had a high temperature and a high humidity ratio compare to standard comfort zone. Most of the indoor thermal environments at the time of starting the air conditioner in the summer were out of the comfort zone. Some of the data recorded while the air conditioner was stopped were in the comfort zone, but in many cases the temperature was relatively higher than comfort zone. Most indoor climate distributions in the winter were in the comfort zone and the indoor climate in autumn coincided well with the criteria of the comfort zone. Compared with results of previous studies in these 25 years, indoor ambient average temperature in winter has increased and the comfort temperature has increased in the heating period and decreased in the cooling period. This result indicates that the development of an HVAC system has created an expectation of comfort for residents and has shifted their thermal comfort zone warmer in winter and cooler in summer.     

关于电热膜供暖系统的探讨

通过对电热膜供暖系统的介绍 ,就电热膜供暖系统的供电设计和应用中的利弊等方面问题做了进一步分析 ,鉴于电热膜供暖系统的诸多优点 ,指出其必将拥有更广阔的应用前景     

电热地面供暖系统简介

对电热地暖系统进行了介绍，阐述了电热地暖系统的原理、特点及经济性。指出电热地暖系统在未来的供暖工程中具有潜在的发展前景。     

监理在电伴热系统施工过程中的质量控制

通过具体的工程实例,针对电伴热系统施工安装作业特点,阐述了监理在电伴热施工中的过程控制要点,并提出了一些建议和方法,以确保电伴热系统的运行安全。     

生土建筑物理环境研究——以豫西陕县天井窑洞为例

不同的生态环境、地理气候条件决定着其区域的建筑形式,豫西天井窑洞是适应黄土高原气候的一种生土建筑.生土建筑的环境问题一直是建筑学关注的重大课题,而其物理环境的研究则是最基本的研究,该文通过对其室内热舒适度的考察、测定、比较采分析其居住的舒适性,希望对改善当地窑居环境和条件提供一些理论数据和建议.     

杭州凤起大厦电储热供暖及生活热水系统设计

介绍了该大厦电储热供暖及供生活热水系统的设计方案及特点，对工程实际运行数据的分析表明，该系统具有经济、环保、运行可靠等优点。     

严寒地区节能建筑供暖能耗的影响因素

以严寒地区某栋采用低温辐射电热膜供暖系统的节能建筑物中标准层的8个热用户为研究对象,对其供暖能耗进行了实测,分析了影响供暖能耗的因素———房间所处楼层、户间传热、太阳辐射。     

神舟科技大厦空调设计

介绍了该大厦的概况、空调方案,以及空调冷热源、水系统、风系统、防排烟系统的设计。     

混凝土搅拌站自控温电加热保温系统

混凝土搅拌站冬季施工时易受冷结冰,而传统的保温方法又无法保证正常的工作温度.为某HZS90型混凝土搅拌站设计加装自控温电加热保温系统,取得成效.自控温电加热保温系统采用内设加热电缆加热和外附保温层保温的方法,选择电加热元件防爆接线盒和电路空气短路开关,不影响原混凝土搅拌站的技术性能,系统运行安全有效,可保证施工工期,取得很好的经济效益.     

Thermal storage performance analysis on Chinese kangs

Chinese kangs are widely used as a rural home heating system in Northern China by 175 million people. The main features of Chinese kangs include the effective use of thermal mass in kang plate. In this paper, a thermal and airflow model for an elevated kang is developed with a simply consideration of the heat transfer in building envelope. Approximate analytical formulas are derived to identify the critical parameters that affect the levels and fluctuations of kang plate temperature and indoor air temperature. It can be observed that the increase of the plate time constant and the heat source frequency with continuous firings and equally distributing the firings and adding the number of firing with intermittent firings can effectively decrease the fluctuation of kang plate temperature and indoor air temperature. The results of model analytical solutions can serve engineers for design proposals or check analysis to determine the required thermal capacity of kang plate at the early design stage. An example of heat source-based design process is described to determine the thickness of a kang plate and firing distribution.     

供冷供热机组用电加热20^#重油的燃料供应系统

推荐直燃机和燃油热水锅炉燃用２０＃重油,介绍该油品特性和电加热设备,分析其经济性,给出了实用的供油系统图式,可作为冷热源选择和设计的参考。