热水锅炉供暖系统的安全和经济运行

１ 引言 我国小型分散锅炉房的热水供暖系统都是直接供暖系统,而大型集中锅炉房的热水供暖系统一般是间接供暖系统。大型集中锅炉房在节能、环保方面优于小型分散锅炉房。从北京来说,目前分散锅炉房约占７０％左右。在全国范围内,直接供暖系统是热水锅炉供暖的主要形式．但无论直接供暖还是间接供暖,供暖系统的设置和运行状况都对锅炉的安全经济运行有一定影响,其中直接供暖系统的状况对锅炉运行的影响更大、更直接、本文针对目前热水锅炉供暖系统中存在的一些问题,分析了直接和间接供暖系统对热水锅炉安全和经济运行影响,并提出了相…     

循环流化床锅炉点火实践

随着节能与环保要求的日益提高,更多的城市在致力于采用集中供热来适应节能与环保的要求。我厂应市场要求,同中科院工程热物理所联合开发,由我厂设计、制造的DHF29—1.6/150/90—P型循环流化床热水锅炉(简称29MW锅炉)已于1993年12月2日在河南濮阳中原油田供热厂点火成功,投入运行。该炉型是我国目前最大容量的循环流化床热水锅炉,它的投运标志着我国工业热水锅炉上了一个新台阶。     

新型节能的介质热管锅炉成套供热系统

新型节能的介质热管锅炉成套供热系统沈阳汽车建安公司毕慧杰１前言我国北方地区冬季采暖大多用热水锅炉采暖系统供热。这种供热方式设备复杂，投资大；运行管理难度大，费用高，耗能大，综合热效率低。目前在黑龙江省、吉林省等地区的小型采暖系统上陆续推广和应用的介质...     

新型的环保节能技术—-智能化调节器

供热设备采用节能控制运行方式可以大大降低能源消耗,从而降低用热费用。近日,北京新源大通供暖有限公司在京召开了节能环保技术交流会,来自有关部门的领导和设计院的专家及企业代表近百人参加了交流会。　　北京新源大通供暖有限公司于1997年引进了世界著名品牌锅炉——德     

严寒地区太阳能—土壤源热泵相变蓄热供暖系统

介绍了一种节能环保的供暖方式—太阳能-土壤源热泵相变蓄热供暖实验系统。详细阐述了系统的主要运行模式,并应用该系统在严寒地区进行实验研究。通过分析系统在不同的供暖时期的运行特性可知,在供暖过渡季的系统平均供热系数达到6.13,在供暖中期系统平均供热系数为2.94。同时预测该系统应用在其它供暖地区,节能效果更加显著。     

冬季采暖用燃煤锅炉的运行经济性分析

根据我国国情,北方地区的冬季采暖仍然以燃煤为主.针对前段时期兴起的以煤粉炉替代层燃炉作为冬季供暖锅炉有利于节能和环保的说法,以58 MW燃煤热水锅炉为例,从设备基建投资、能源综合利用率、运行经济性等方面对煤粉炉和层燃炉进行了分析比较,结果表明,无论从燃料的选择范围、运行经济性、维修保养还是从供热负荷适应性和运行安全性角度来说,就应用于冬季采暖的锅炉而言,层燃炉仍优于煤粉炉.     

集中供热节能环保双受益

集中供热节能环保双受益北京重型电机厂甘龙元北京重型电机厂集中供热自１９８９年１２月投建运行已有四年多的时间。一期工程安装三台锅炉，供热量为３×２５００×１０４ｃａｌ／ｈ，从一台锅炉运行供暖西厂区１２万ｍ２，发展到全厂供暖并向社会供暖近８５ｍ２供热半径...     

29MW燃煤链条炉排锅炉配套型煤机的开发与应用

介绍了29MW热水锅炉大型型煤机的开发研制，结构原理及应用后的效果，解决了链条炉燃用细粉末贫煤存在的难题，为供热节能和环保达标开拓了崭新途径。     

哈尔滨市王兆小区供热节能改造

目前北方城市居民区的冬季采暖除采用热电厂集中供热外,还在相当多的居民小区采用供热锅炉房供暖。这些小区的供暖面积一般在10万m~2以上,与分散采暖比较,提高了燃料利用率,取得了明显的节能效果,减轻了环境污染。但从能源合理利用角度出发,单纯的集中供热还没有实现能源的梯级利用,节能还有潜力。如在新建的供热锅炉房或对现有的供热锅炉房进行节能改造时实行热电联供,既供热又供电,必将产生明显的节能效果和社会效益。     

热网运行参数自动监测系统

我单位有4座规模小等的供暖锅炉房,供热面积50万 m~2。具体情况如下:一号锅炉房分高低层2套供暖系统,高层建筑面积约7万 m~2,低层建筑面积约24万m~2,配有6台热水锅炉,分别为10.5MW 锅炉2台,4.2MW 锅炉3台,7MW 锅炉1台。二号锅炉房供暖面积约3万 m~2,配有2.8MW 热水锅炉2台。三号锅炉房供暖面积约6万 m~2,配有4.2MW 热水锅炉2台。五号锅炉房供暖面积约10万 m~2,配有4.2MW 热水锅炉2台,7MW 热水炉1台。     

Dependence of Techno-Economic and Ecological Indicators of Flat-Plate Solar Water Heating Collectors in Hot Water Supply Systems from the Temperature of Heating Water

The main ways of improving the performance efficiency of solar energy (SE) use in hot water supply systems (HWSSs) are discussed. It is established that the environmental characteristics of flat-plate solar water heating collectors (FPSWHCs) for heating water in HWSSs depend on the water heating temperature in these systems.     

Analysis of the impact of heat-to-power ratio for a SOFC-based mCHP system for residential application under different climate regions in Europe

In this paper, the ability of a micro combined heat and power (mCHP) system to cover the heat and electricity demand of a single-family residence is investigated. A solid oxide fuel cell based mCHP system coupled with a hot water storage tank is analyzed. The energy profiles of single-family households in different European countries are evaluated. The range of Heat-to-Power Ratio for the SOFC-based mCHP System of 0.5–1.5 shows good agreement with the hot water, space heating and electricity demand during the warm seasons across Europe. This suggests that the fuel cell system should be sized according to the summer energy demand. The winter energy demand shows a Heat-to-Power Ratio which cannot be covered by the mCHP unit alone. To ensure that the mCHP system meets both the thermal and electrical energy demand over the entire year, an auxiliary boiler and a hot water storage tank need to be coupled with the mCHP unit. It is further noted that the size of the auxiliary boiler should match the larger winter space heating demand. In contrast, the hot water tank volume should be sized according to the warm season space heating requirement, when space heating is not required but electricity and hot water are still in demand. This maximizes the running time of the fuel cell, and thus the economic and environmental benefit of the system, without wasting produced heat.     

以太阳能/空气为热源的直膨式热泵热水系统

介绍了一种直膨式太阳能热泵空调及热水系统。针对春季供热水工况，分别对以太阳能及空气为热源生产生活热水进行了比较，发现以太阳能为热源具有更高的COP值，节能效果更为显著；根据试验数据分析了压缩机工作频率、太阳辐射强度、环境温度等因素对热泵系统性能系数的影响。     

QXL系列集中供热热水锅炉的开发设计

介绍了QXL系列集中供热热水锅炉的主要结构特点以及在节能和环保方面所做的关键技术研究和创新设计。     

Parametric Analysis of Solar Heating and Cooling Systems for Residential Applications

Abstract

In this paper, a parametric analysis of two solar heating and cooling systems, one using an absorption heat pump and the other one using an adsorption heat pump, was performed. The systems under investigation were designed to satisfy the energy requirements of a residential building for space heating/cooling purposes and domestic hot water production. The system with the absorption heat pump was analyzed upon varying (i) the solar collectors’ area, (ii) the volume of the hot water storage, (iii) the volume of the cold water tank, and (iv) the climatic conditions. The system with the adsorption heat pump was evaluated upon varying (i) the inlet temperature of hot water supplied to the adsorption heat pump, (ii) the volume of the hot water storage, (iii) the volume of the cold water tank, and (iv) the climatic conditions. The analyses were performed using the dynamic simulation software TRNSYS in terms of primary energy consumption, global carbon dioxide equivalent emissions, and operating costs. The performance of the solar heating and cooling systems was compared with those associated with a conventional system from energy, environmental and economic points of views in order to evaluate the potential benefits.     

家用集成热水系统的设计

本文设计了一种新型家用集成热水系统,它集成了太阳能热水器、燃气热水器和回水加热循环的优点,利用了太阳能热水器的节能、燃气热水器和回水加热循环的即开即热,采用PLC集中控制实现节能、环保和智能控制的目的。     

住宅太阳能热水系统评价

介绍太阳能热水系统的评价指标。结合实例,对承德某太阳能热水系统的节能费用、投资回收期、环保效益进行计算,并与常规热水系统进行了比较。     

一种新型太阳能冷热联产系统的设计

基于节能环保的理念,设计了一种新型太阳能冷热联产系统。该系统利用太阳能作为能量来源,半导体制冷片作为制冷元件,同时回收系统的废热,整套系统的能源利用效率较高。以能量平衡与传热理论为基础,结合理论计算和数值模拟,证明该系统可实现冷热联产的功能,制冷能效COP为0.7,热量利用效率达73.5%。     

Experimental study of the burning-cave hot water soil heating system in solar greenhouse

In the northern China areas, the traditional heating methods are widely used in solar greenhouse, for example: electric heating, hot air heating, hot water heating, burning-cave heating etc. If copying the assuring building indoor environment of constant heating ways into solar greenhouse, it will further increase building energy consumption, thus improving the efficiency of energy utilization, establishing appropriate growing environment, and realizing the agricultural waste recycling are important ways of consistent with the Chinese conditions, construction of sustainable development, improving the efficiency of the greenhouse production. To solve the problem of traditional heating method for high heating energy consumption, the inharmonious between greenhouse air temperature and soil temperature, uneven soil temperature, the research build the burning cave hot water soil heating system of solar greenhouse experimental platform in accordance with principle of energy cascade utilization. This experiment platform will transfer burning cave internal heat into soil heating system. The soil is evenly heated by system. Through testing the actual operation effect of the burning cave hot water soil heating system of new solar greenhouse, electric heating system, no taking any heating measures system, burning cave hot water soil heating system of solar greenhouse can improve the soil average temperature 5 ∼ 6 °C. This research provides experimental basis for practical applications and promotion.