500kW天然气热电冷三联产系统设计与优化
毕业论文关键词： 天然气 热电冷三联产 500kW 设计 优化
毕业设计说明书（论文）外文摘要
Title The Design and the Optimization of a 500kW Gas Trigeneration System
Abstract
A trigeneration system based on a natural-gas turbine is one of the energy-saving, energy-efficient and environmental friendly ways in these days. This article is mainly both a design and an optimization of a 500kW trigeneration system based on a natural-gas turbine for a building somewhere. The first main work is to simulate the load of the building in this paper. The expected result is that the heat load is 8661.5 kW, the cold load is 9810.6 kW and the electric load is 3817 kW. Then calculate the load according to the forecast data. We use two gas steam boilers with the single machine capacity of 1400kW, one waste heat steam boiler with the single machine capacity of 350kW for heating, and use one 630kW diesel generator set to generate power, as well as two gas double-effect bromide colding units with the refrigerating capacity of 4070kW, one 580kW steam double-effect bromide cooling unit for refrigerating. After that, we made a system optimization by adding ice storage device and ground source heat pump machine to improve the efficiency of energy utilization. The design of the loop also should take both the improvement of energy efficiency and investment earnings into consideration.
Keywords: Natural-gas; Trigengration system; 500kW; Design; Optimization
目 次
1 绪论 1
1.1我国的能源现状 1
1.2 旧模式的弊端 2
1.3天然气热电冷三联产 3
1.4 主要工作流程 4
2负荷需求 6
2.1 建筑背景 6
2.2 建筑冷热负荷 8
2.3建筑电负荷指标 10
2.4建筑生活热水及蒸汽需求 10
3设计方案 12
3.1 设计需求 12
3.2 主要设备 12
3.3 系统设计及计算 17
4方案分析及优化 19
4.1方案优化设计 19
4.2优化方案设备 21
4.3方案优化计算 22
4.4方案分析 22
4.5方案优化 23
结 论 25
致 谢 26
参考文献 27
附表一 29
1 绪论
1．1我国的能源现状
1.1.1概述
在过去的一个多世纪的工业化发展中，发达国家的工业的飞速发展消耗了大量的自然资源，能源资源尤其显著。如今，有些发展中国家也逐渐进入工业化的阶段，能源消费的大量增长在当前社会发展下是一种客观必然。