| 三种空调用制冷机的(火用)经济性分析与比较 |
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| 引用本文： | 路诗奎,张小松. 三种空调用制冷机的(火用)经济性分析与比较[J]. 暖通空调, 2007, 37(5): 65-67 |
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| 作者姓名： | 路诗奎 张小松 |
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| 作者单位： | 210096 南京东南大学动力工程系;东南大学 |
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| 摘 要： | 利用成本方程,建立了制冷机经济性分析的模型,并结合北京地区旅馆类建筑空调系统的实例,分析比较了蒸气压缩离心式、双效溴化锂吸收式、直燃溴化锂吸收式三种不同制冷机的经济性。分析结果表明,从有效能的利用和经济性角度考虑,虽然溴化锂吸收式制冷机不省能,但经济性较好。其中存在价格因素,在现行价格体系下,单位燃料动力的成本,煤炭是电力的1／10。这也说明当前我国的能源价格不合理,特别是电力价格相对于煤炭价格过高。
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| 关 键 词： | 制冷机 (火用)经济性 (火用)效率 (火用)成本 |
| 修稿时间： | 2006-03-242007-03-09 |
Exergy economy analysis and comparison of three kinds of refrigerating machines used in air conditioning systems |
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| Lu Shikui,Zhang XiaoSong. Exergy economy analysis and comparison of three kinds of refrigerating machines used in air conditioning systems[J]. Journal Heating Ventilating and Airconditioning, 2007, 37(5): 65-67 |
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| Authors: | Lu Shikui Zhang XiaoSong |
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| Affiliation: | Southeast University, Nanjing, China |
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| Abstract: | Using the exergy cost equation, establishes a model of exergy economy analysis for refrigerating machines. Combined with an air conditioning system of a hotel in Beijing area, compares the exergy economy among the vapor compression refrigerating machine, double-effect lithium-bromide absorption-type refrigerating machine and direct-fired lithium-bromide absorption-type refrigerating machine. The results show that the economy of lithium-bromide absorption-type refrigerating machine is better though it can not save energy. There being price factor, in current pricing structure, exergy cost of unit fuel power for coal is one-tenth that of electric power, which indicates that present energy price in China is irrational, especially the price of electric power is over high compared with that of coal. |
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| Keywords: | refrigerating machine exergy economy exergy efficiency exergy cost |
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