共查询到19条相似文献，搜索用时 234 毫秒
1.
按需供热系统常采用分阶段改变温度的量调节方式,锅炉房配合采用锅炉节能运行控制系统。分阶段改变温度的量调节建立在新的调节理念基础上,更加适合按需供热系统。本文对按需供热系统的节能运行方法进行探讨。 相似文献
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王晓瑜 《西安文理学院学报》2010,13(3):34-37
对某市集中供热控制系统的节能改造做了介绍,对系统的硬件组成和软件设计做了阐述.实践证明,该供热系统通过节能改造后,用户供热要求得到保证,废气排放量减少,提高了供热单位的经济效益. 相似文献
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在集中供热系统中,采暖热水由水力管网输送到各个用户.区域集中供热系统大多是异程式系统,其供热管网难免出现近热远冷的热力失调现象,导致供热质量不高,或者由于热源按最远端用户的要求供热,使得靠近热源的用户出现过热现象.本文从理论上分析了供热系统运行中的水力失调现象,提出了有效的水力平衡调节方法. 相似文献
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目前,大部分高校采暖系统多采用的是上供下回垂直单管顺流式或单管顺流带跨越管的系统型式,造成了供热能量大量浪费。某高校安装分时段的高效率节能集中供热控制系统,节能效果明显,不仅投入少,还提高了采暖运行的管理水平,既简单又可靠,达到既确保人体舒适又真正节能的目标。 相似文献
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本文对区域锅炉房集中供热系统进行了深入研究,对供热系统整体控制方法进行了深入研究,设计了采用合理的控制方法对系统控制进行调节优化,使用户调节和热源控制两者之间达到最优控制.采用BP神经网络理论,建立了室温预测模型,同时也为间联网区域供热系统提供理论基础. 相似文献
6.
冯会轩 《濮阳职业技术学院学报》2007,20(2):18-19
如何实现集中供热系统的分户供热和分户计量热量,成为当前供热工程技术迫切需要解决的课题。本文就集中供热系统中的分户供热和分户计量热量做了进一步的阐述。 相似文献
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目前,随着我国供热技术的进一步发展,供热基础设施的建成,集中供热率起来越高.因此一个良好的运行管理系统将有效地节能降耗,有利于企业的长期发展. 相似文献
9.
目前,我国的集中供热主要是以燃煤为燃料的热电联产和区域锅炉房供热,但是集中供热普及率只有30%左右,有大量的分散供热锅炉房,这些锅炉房常年处于低效率运行当中,不完全燃烧造成排放烟尘污染物超标,排烟温度高,这种分散锅炉房造成了极大的能源浪费,不符合我国节能减排的能源使用政策.由于我国经济的快速发展,能源消耗不断增长,如果不尽快的提高的能源利用率,势必会阻碍我国经济的可持续发展战略,为了从根本上提高能源使用效率,我们供热行业需要做好一下几个方面的工作. 相似文献
10.
信磊 《胜利油田师范专科学校学报》2010,(1):24-25,50
随着城市规模的不断扩大,现有集中供热系统的补水方式已经不能满足供热需要。以胜利油田供应东换热站为实例,采用变频器控制补水泵转速的方式进行补水。结果表明：补水泵变频调速的补水方式解决了现有补水方式的不足,大大提高了供热的稳定性,降低了工作人员劳动强度．并有一定的节能效果。 相似文献
11.
In the beach well intake system, heat is transferred from soil to fluid when seawater is filtered through the aquifer, providing higher temperature source water to the seawater source heat pump (SWHP) system in winter. A 3-D coupled seepage and heat transfer model for studying beach well intake system is established by adopting the computer code FLUENT. Numerical results of this model are compared with the experimental results under the same conditions. Based on the experiment-verified coupled model, numerical simulation of the supply water temperature is studied over a heating season. Results show that the minimum temperature of supply water is 275.2 K when this intake system continuously provides seawater with flow rate of 35 m3/h to SWHP. Results also indicate that the supply water temperature is higher than seawater, and that the minimum temperature of supply water lags behind seawater, ensuring effective and reliable operation of SWHP. 相似文献
12.
Combined heat and power (CHP) coal-fired plants and heat-only boilers are still working as main heat sources in North China. These provide high temperature water on the primary side of district heating (DH) systems. There can be large temperature differences between the primary side and secondary side deployed in low temperature district heating (LTDH) of buildings. In this paper, a LTDH system, integrated with an organic Rankine cycle (ORC) system, is presented and evaluated on how to utilize the limited temperature difference between the primary and secondary sides in a substation. Two cases are illustrated of the performance of two modes (series or parallel connection) and energy efficiencies of the configurations with or without an ORC system. The results showed that the integrated ORC system could provide sufficient power for the circulating pumps in the DH system. The integration of the ORC leads to only a very slight decrement on the supply water temperature. Generally, the series mode can generate the maximum output power from an integrated ORC system. The parallel mode showed more flexibility on the adjustment of output power from the ORC system, especially where domestic hot water is needed. When the cold tap water was used as a cooling stream in the condenser of an ORC system before preparing to be the domestic hot water, it is very helpful in improving the performance of the ORC and increasing the energy efficiency of the DH system. 相似文献
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丁斌 《温州职业技术学院学报》2006,6(1):31-33
低温热水地面辐射供暖系统由于其舒适、卫生、保健、不占面积、热稳定性好、高效节能等优点已越来越多地在建筑供暖中得到推广应用。该供暖系统的施工必须严格按照施工工艺操作进行。 相似文献
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低温地板辐射采暖系统由于其热舒适性高，卫生条件好，热媒参数应用范围广等优点，近几年发展势头迅猛，本文通过外网热损耗的计算，将低温地板辐射采暖系统和普通散热器采暖系统进行了比较，结合采用分户热计量实际工程实测数据比较。得出低温地板辐射采暖系统的经济性。 相似文献
16.
热泵热水器是一种新型的供热设备,是一种可替代锅炉的供暖设备和热水装置。它通过制冷剂温差吸热和压缩机压缩制热后,与水换热,从而提高了热效率并且能较充分利用能源。热泵热水器必须拥有完善而可靠的控制系统。热泵热水器的控制系统由触摸屏与PLC构成。根据对热泵热水器工作原理、系统控制要求及硬件环境设计了触摸屏界面及PLC控制程序。 相似文献
17.
An air source heat pump system (ASHPS) used in an office building is set up and studied experimentally. Its operating performance in winter is evaluated based on test data and a comparative discussion is given on the effect of climate conditions and heating load ratio on the operation behavior. Then heating capacity variation caused by evaporator frosting is analyzed as well. Finally, the defrosting parameters and the technical feasibility are studied for a constant heating demand. The experimental results indicate that both the outlet water temperature drop and the system COP should be taken into account when setting defrosting parameters, and ASHPS is a viable technology for space heating and hot-water production in winter in Tianjin, which can maintain the room temperature above 19 ℃ when the outdoor temperature is -2 ℃. 相似文献
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介绍分户并联智能控制供暖系统设计,系统可分房间控制供暖面积和状态,对室内温度可自行设定,节约热力资源,具有远程控制供暖和报警功能.系统采用智能化控制,功能较全,操作简单,使用方便,便于安装,易于推广应用.热量分户单独核算,取暖费的收费趋于更加科学合理. 相似文献
19.
为进一步提高太阳能利用效率和太阳能辅助空气源热泵供热系统的性能,提出了一种新型太阳能空气源热泵供热系统,并研究了该供热系统的性能和特性.基于自行设计的10kW空气源热泵,建立了供热系统的数学模型,通过模拟得出了不同环境温度和出水温度下供热系统的运行特性和性能规律.结果表明：基于新型太阳能辅助空气源热泵供热系统,热泵的性能得到较大的提高.当环境温度为7℃时,空气源热泵的COP最大可增加26%.这为进一步研究新型太阳能辅助空气源热泵供热系统在供暖季节的性能奠定了基础. 相似文献