Whitepapers
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Differential pressure controllers as a tool for optimization of heating systems
PDF3,899 KB在本文中,您可以阅读有关差异压力控制器的更多信息 - 他们的工作方式以及他们带来的好处,使用的应用程序,最终用户和DH公用事业公司的优势。 -
Controls providing flexibility for the customer increase comfort and save energy
PDF9,765 KB提高能源价格,以及对舒适性的更多需求,导致DH消费者端技术的进一步发展。这种发展涉及更好的控制和计量可能性,因此供应给消费者的热量不会浪费。公寓块包括巨大的节能潜力,因为它们传统上是大多数城市中DH消费者的重要组成部分。 -
降低DT用于DH系统中使用的热交换器的影响
PDF335 KB本文描述了使用用于低供应温度和小对数平均温度差(DT)的使用热交换器的影响,与当今指定和应用的水平相比。 -
Low temperature DH consumer unit with micro heat pump for DHW preparation
PDF7,336 kb在本文中,我们介绍并分析了在低温(40°C)DH网络中使用微热泵的区域供暖(DH)消费单元(DH)消费单元的可行性。 -
供暖系统翻新趋势在多户家庭建筑物中
PDF7,942 KB在多人家庭住宅建筑物中租赁区域内建造翻新的活动正在增加。本文介绍了一个关于最初配备一个管系统的住宅建筑综合体现代化的案例故事。 -
Pressure oscillation in district heating installations
PDF7,053 kb丹福斯(Danfoss)数十年来一直是营销区供暖压力控制器,但直到最近,我们才看到围绕地区供暖网络的压力振荡问题的询问越来越多。我们在这方面进行了广泛的分析,在文章中阅读了更多内容。
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Making the case for district cooling
PDF313 kb如今,世界上约有10%的电力生产用于空调。根据国际研究,在未来几年中,对商业和住宅建筑的冷却需求将成倍增长,尤其是在印度,中国和南美的高收入国家和新兴经济体中。
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区域冷却系统中的液压平衡
PDF7,365 kb在过去的二十年中,既定地区冷却系统的数量迅速增加。这可能是由于当今地区的冷却系统是:•更具经济吸引力•更环保•更有效
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区域供暖变电站中电动阀的阀特性
PDF3,512 KBThe present paper describes the results from an investigation carried out in connection with the development of a new valve characteristic for motorized control valves for hot water service in district heating (DH) substations. From a theoretical point of view, the paper discusses basic control theories and physical relationships of crucial importance to this application, including the decisively important relationships between heat exchanger, controller, motor (actuator) and control valve. In addition to the theoretical analysis, the investigation is supported by dynamic simulations and results from laboratory experiments. The result of the investigation was the development of a new valve characteristic as described in this paper.
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热交换器的最佳控制
PDF4,811 kb本文涉及控制热水服务高性能热交换器的控制。从理论的角度分析了一些基本控制理论及其果断的重要关系。描述了一个新开发的控制,将设计中的各个元素置于控制理论的视角中。
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Distribution systems in apartment buildings
PDF3,278 KBIn an apartment building, the two main principal heat and domestic hot water (DHW) distribution methods are the riser pipe system and the decentralized system with flat stations. In the first case, the DHW system heat losses may be bigger than the net heat for preparing the DHW.
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DH房屋站的动态模拟
PDF3,185 kbDanfoss开发了开发HVAC组件的仿真模型,包括该公司为中央和地区供暖系统生产的控制设备。在本文中给出了一些示例。举办了模拟的家庭热水服务站的例子。
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用于热水准备的储罐与热交换器的成本注意事项
PDF515 KBThe aim of this article is to give an economical evaluation of the two typical principles of preparing hot water (HTW), focusing on the system as a whole.
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如何避免区域供暖系统中的压力振荡
PDF5,074 KB本文解释了与振荡相关的差压力控制器的性质。提出了一些用于消除或减压压力振荡的手术提示。得益于差异压力控制领域的应用知识,现在可以解决已经存在的应用程序中的压力振荡问题,并就新应用的正确设计提供具体建议,以消除压力振荡的风险。阅读完整的纸张以了解更多信息。
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关于平板电台概念的分析
PDF716 kbIn some countries the flat station concept is becoming a common way of realizing heating and domestic hot water (DHW) installation in blocks of flats. Anyhow, in other countries it is at the very beginning. Experience from those countries reveal a number of questions when understanding and evaluating the flat station concept. -
创建节能多户住宅供暖系统的实用准则
PDF7,156 kbThis whitepaper is intended to support heating professionals with creating complaint free and energy efficient two-pipe radiator heating systems in (multi-family residential) buildings. The guidelines are relevant for retrofit, renovation as well as new construction situations.
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自动调整和电动机保护作为加热系统预装程序的一部分
PDF819 kb自动调节:家庭热水服务控制器的自适应设置。电动机保护:在低性能过程中自动设置控制器。功能良好的加热系统的前提是,在使用之前,要对其进行正确的设置。必须进行调整以预设调节参数。本文介绍了执行系统控制参数的自动设置以及这给出的优势的方式。 -
Pilot controlled valve without auxiliary energy for heating and cooling systems
PDF406 KBThe parallel installation of two valves with different dimensions allows a wide positioning range also for controllers without auxiliary energy. So, high control stability for the low and partial load range can be assured. These ‘pilot controlled control units’ consist of a main valve, a -
Control concepts for DH compact stations
PDF706 kbThis article describes the basic functionality of four control concepts, a thermostatic controller, a proportional controller and a parallel and serial coupling of those. The focus is on plate heat exchanger control, and the investigation is based on dynamic simulations, i.e. on models verified up against practical measurements. -
区域供暖系统中的液压平衡
PDF756 KB通常在系统中建立液压平衡是将差压力控制到经营变电站所必需的水平,从而控制各个分支中的流量的问题。控制系统中的差压力和流量可能对客户和公用事业有优势。 -
减少HVAC系统中的振荡
PDF338 KB在HVAC系统以及过程工厂,地区供暖和地区冷却公用事业中,可能会发生控制环的定期振荡。它有几个原因。该过程的非线性,控制器的过度扩增和超大系统只是很少的原因。
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The role of district cooling in the future energy systems
区域供暖在未来的智能能源基础设施中的作用进行了很好的讨论,但其对应者的冷却功能也可以发挥重要作用。地区冷却是一种集中式解决方案,可为建筑物提供具有成本效率和环境友好的冷却。在考虑地区冷却时,通常会认为这是温暖气候的解决方案。
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低温区供暖和地热供暖的好处
鉴于对未来的能源效率提高和利用可再生能源利用的持续要求,这是与地热热源和低温区供暖(DH)系统的组合的关注相关的,这也被称为第四代DH。
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Reaching energy efficiency goals with district energy networks
提高能源效率,减少碳排放和削减能源费用,几乎所有人(工业和制造业,商业设施,政府实体和个人房主)都将不断增长。对高效清洁的能源技术的需求将有助于实现这些目标。
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Building solutions for low temperature heat supply
当利用低温区域供暖时,在消费者端获得良好的控制以满足所需的供应冷却变得重要。因此,低供应温度并不是恒温散热器控制的大问题。当涉及到家用热水时,低供应温度可能会导致军团菌生长的挑战。
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地区供暖第四代的分布
区供暖(DH)留在这里。回顾DH的历史,几年前。在几年的时间里。该开发已分为4代,每个人都表明该技术的重大变化。
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区域供暖第二代的分布
区供暖(DH)留在这里。回顾DH的历史,几年前。During the years it has developed to fulfill the demands as they came up, typically driven by the demand for reduced investment and heat costs, but also lower equipment space demands, concerns of energy efficiency and lower fire risks.
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Distribution of district heating 1st generation
区供暖(DH)留在这里。回顾DH的历史,几年前。During the years it has developed to fulfill the demands as they came up, typically driven by the demand for reduced investment and heat costs, but also lower equipment space demands, concerns of energy efficiency and lower fire risks.
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地区供暖第三代的分布
区供暖(DH)留在这里。回顾DH的历史,几年前。在几年的时间里。
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District heating substation with electrical heater
It is a fact there is abundance of low-temperature renewable energy sources that are waiting to be utilized. The limiting factor for taking advantage of those heat sources has historically been the temperature requirements of space heating installations. With the increased number of low-energy buildings and floor heating installations the requirements to the supply temperature has been decreasing, which opens up the possibilities for exploiting the unused low-temperature energy sources.