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Space heating
Published in Derek Worthing, Nigel Dann, Roger Heath, of Houses, 2021
Derek Worthing, Nigel Dann, Roger Heath
Central heating is an approach in which heat is produced by a boiler and then distributed around the house utilising hot water and, very occasionally, heated air. Because of this most central heating systems are referred to as ‘wet’. Currently the central heating boiler almost universally provides for domestic hot water as well as space heating, in both existing and new houses. Such installations usually consist of four main parts: a boiler to generate heat;a medium through which the heat travels to its destination. This will usually be in the form of pipework carrying water or, very occasionally, ducts carrying air;an element which emits the heat once it reaches that destination. This will usually be in the form of radiators, convectors or underfloor systems;a system of controls which enable the system to operate efficiently and conveniently.
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Published in Les Goring, Residential Surveying Matters and Building Terminology, 2023
Central heating: This term means that the heat being used in an entire dwelling or building is from a central source – a boiler, or heater – which is either one that heats water (a hot-water heating system) or one that heats air (a warm-air heating system).
Resistance coefficient identification of a heating pipe network based on a heuristic three-parent genetic algorithm
Published in Engineering Optimization, 2023
Qingwu Fan, Xingqi Zhou, Huazheng Han, Wangyang Zhang
The central heating system is a basic staple of life in northern China; it has long been paid attention to because of its high energy consumption and its close connection with the winter haze problem. Because the central heating system covers a wide area and contains a large number of heat users and complex and vast heating network pipelines, it is very difficult to control and adjust. Smart heating (Lachhab et al. 2019) systems can solve these problems to some extent. These systems require an accurate and reliable pipe network hydraulic model. The identification of the pipe network resistance coefficient is key to constructing a heating pipe network hydraulic calculation model. The resistance coefficient of the pipe network represents the resistance loss when the pipeline passes a unit flow rate; however, under the influence of factors such as the operation of the pipeline and water quality, it will change over time, thereby affecting the supply. Compared with ordinary pipe networks, because of the high water temperature of a heating pipe network, the resistance coefficient changes caused by factors such as corrosion and wear are more severe. The practical application value of heat-related research is therefore high.