磁悬浮离心式冷水机组在某办公建筑空调系统中的应用研究

发布时间：2018-10-21 11:26

【摘要】：在办公建筑中,空调系统能耗占建筑系统总能耗的60%左右,节能潜力巨大[1]。面对日益严峻的能源危机,磁悬浮离心式冷水机组应用而生,其极高的能效比大大降低了空调系统的能耗,正得到广泛的推广和应用。本次设计为青岛某办公建筑群空调系统设计,其建筑规模庞大,空调区域使用要求复杂,给建筑的空调系统设计带来一定的困难。本着“适用、经济、节能、环保”的原则,进行了本次空调系统的设计。针对本次课题研究的需要,首先使用鸿业暖通负荷计算软件对建筑负荷进行计算,并利用De ST软件模拟了建筑全年逐时负荷,掌握了建筑全年动态负荷特性;结合当地能源结构、政策及气候特点,提出了多种冷热源方案,通过经济技术性比较,确定了空调系统的冷源为磁悬浮离心式冷水机组,空调系统热源为低谷电蓄热电锅炉;随后进行了空调系统的水力计算,为后续的设备选型及水系统设计提供一定依据;紧接着对一级泵定流量系统、二级泵变流量系统和一级泵变流量系统进行了能耗分析计算,最终确定负荷侧水系统形式为一级泵变流量系统;最后,针对一级泵变流量系统提出运行控制方案,使整个空调系统能够安全、合理、高效地运行。在本次设计中,相对与普通离心式冷水机组,磁悬浮离心式冷水机组的节能效率达到41.39%,节能效果非常明显;相对于一级泵定流量系统,一级泵变流量系统节省了28.42%的运行能耗,节能优势明显;设计中采用的低谷电蓄热电锅炉能很好的达到削峰填谷的目的,且年运行费用远小于高效燃气真空锅炉,经济效益明显。
[Abstract]:In office buildings, the energy consumption of air conditioning system accounts for about 60% of the total energy consumption of building system. Facing the increasingly severe energy crisis, the application of magnetic suspension centrifugal chillers, whose extremely high energy efficiency ratio has greatly reduced the energy consumption of air conditioning systems, is being widely promoted and applied. This design is designed for the air conditioning system of a certain office building group in Qingdao. The large scale of the building and the complex requirements for the use of the air conditioning area bring some difficulties to the design of the air conditioning system of the building. In line with the "applicable, economic, energy-saving, environmental protection" principle, the design of the air-conditioning system. In order to meet the need of this research, we first use Hongye HVAC load calculation software to calculate the building load, and use De ST software to simulate the hourly load of the building year, and master the dynamic load characteristics of the building year. According to the local energy structure, policy and climate characteristics, several schemes of cooling and heat source are put forward. Through the comparison of economy and technology, the cooling source of air conditioning system is magnetic suspension centrifugal chiller, and the heat source of air conditioning system is low electric storage electric boiler. Then the hydraulic calculation of the air conditioning system is carried out, which provides a basis for the subsequent equipment selection and water system design. Then, the energy consumption analysis and calculation of the first stage pump constant flow system, the two stage pump variable flow system and the first stage pump variable flow system are carried out. Finally, the first stage pump variable flow system is defined as the load side water system. Finally, the operation control scheme is put forward for the first stage pump variable flow system, so that the whole air conditioning system can operate safely, reasonably and efficiently. In this design, the energy saving efficiency of magnetic suspension centrifugal chillers is 41.39, compared with ordinary centrifugal chillers, the energy saving effect is very obvious, compared with the constant flow system of the first stage pump, the first stage pump variable flow system saves 28.42% of the running energy consumption. The energy saving advantage is obvious, the low valley electric storage electric boiler used in the design can achieve the purpose of cutting the peak and filling the valley, and the annual operating cost is far less than that of the high efficiency gas vacuum boiler, and the economic benefit is obvious.
【学位授予单位】：青岛理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU831.3

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