热管型散热器散热性能的实验研究

 2022-02-16 08:02

论文总字数:36531字

摘 要

实验结果表明,热管等温性良好,其顶端温度与热源温度之差基本维持在5℃左右,启动速度较快,启动开始130s后基本达到稳定工作状态,热管热工性能满足实际要求。热源温度在65℃-85℃之间,单片散热器启动状态并无太大区别,均在启动250s后基本达到稳定工作状态,稳定工作时单片散热器顶端温度与热源温度之差在10-14℃之间。单片散热器在65℃,75℃,85℃热源恒温加热下稳定状态时最大散热功率分别为:139.92W, 179.81W, 259.61W。循环水暖加热下,热源温度与流量的大小对整组热管型散热器的散热功率有较大影响;电加热环境下,热管型散热器散热能力较为突出,外部环境温度上升较为明显。与传统散热器的对比试验中,热管型散热器工作性能与散热能力表现更为出色,在同等加热条件与实验环境下,热管型散热器对外部环境的加热能力更强,空气升温相同时热管型散热器所需时间更短。总体来说,热管型散热器热工性能与工作效果表现良好,能满足正常采暖需求,与普通散热器相比具有一定优势。

关键词:热管型散热器;散热器实验研究;散热量

EXPERIMENTAL STUDY ON HEATING DISSIPATION AND PERFORMANCE OF HEAT PIPE-BASED RADIATOR

03012209 Wei Xiaorong

Supervised by Lu Yong

Abstract: In this paper, taking the heat pipe-based radiator as the object of study, conducts experimental tests of the thermal parameters and heat dissipation of this radiator, in order to achieve analysis of the heat pipe-based radiator’s heating performance under different heating condition. In order to conduct a comprehensive analysis of this, this project mainly involves the following several aspects to carry out the experiment: I:Testing the isothermal characteristic and startup process performance of heat pipe the used to the radiator; II:Testing the heat dissipations of monolithic fin-shaped heat pipe-based radiator in the process of startup state and stably working state under the different heat source condition; III:Testing the heat pipe-based radiator’s condition and heating dissipation of working and heating ability under two types of heating methods including water plumbing heating and electric heating; IV: Comparing the heat pipe-based radiator with the traditional radiator under water plumbing heating and electric heating to work out the differences of thermal performance and heating capacity in the same external environment.

Results of experimental test show that temperature uniformity of the heat pipe is good, the difference in temperature between the top and heat source is basically maintained in about 5℃, and the startup speed is fast, after 130s the heat pipe basically reached steady state, thermal performance of heat pipe meets the practical requirements. When the heat source temperature is between 65℃ to 85℃, not much difference appears in the state of startup, after the start in 250 s monolithic radiator basically reached the steady state, when the difference in temperature between the top and heat source is about 10 ℃ to 14 ℃. The maximum heat dissipation of monolithic radiator at the constant temperature of 65 ℃, 75℃, 85℃ heat source are: 139.92W, 179.81W, 259.61W. Under hot-water heating circulation, the temperature and flow of water has great influence on the whole set of heat pipe type radiator heat dissipation power; under electric heating environment, the heat pipe-based radiator’s heating ability is more prominent, the external environment temperature rises obviously. And in the contrast test of the traditional radiator and heat pipe-based radiator, the performance and heat dissipation of heat pipe-based radiator is more outstanding, under the same heating condition and test environment, heat pipe-based heats external environment in a shorter time. Generally speaking, the thermal performance of the heat pipe radiator is good, and it can meet the normal heating demands, and has certain advantages compared with the ordinary radiator.

Key Words: heat pipe-based radiator; experimental study; heating dissipation

目 录

摘要: I

Abstract: II

第一章 绪论 1

1.1引言 1

1.2散热器的热工性能测试与研究发展及现状 1

1.3热管型散热器的原理和优点 2

1.4本课题研究内容,现状与意义 3

第二章 应用于散热器的热管性能测试及评价 5

2.1热管应用于散热器的意义及评价标准 5

2.2热管等温性测试 5

2.2.1实验平台搭建及测试方法 5

2.2.2实验数据及分析 6

2.3热管性能评价 9

第三章 单片翅片热管型散热器热工性能测试及评价 11

3.1引言 11

3.2单片翅片热管型散热器翅片热工性能测试 11

3.2.1实验平台搭建及测试方法 11

3.2.2实验数据及分析 12

3.3实验总结与分析 20

第四章 热管型散热器性能测试及评价 21

4.1引言 21

4.2热管型散热器在不同环境下的性能测试及评价 21

4.2.1实验平台搭建及测试方法 21

4.2.2热管型散热器水暖实验测试 23

4.2.3热管型散热器封闭空间内电加热实验测试 25

4.3实验总结与分析 27

第五章 热管型散热器与传统散热器性能测试对比试验及评价 28

5.1引言 28

5.2不同工况下热管散热器与传统散热器对比试验 28

5.2.1水暖试验 29

5.2.2电加热试验 32

5.3热管型散热器优势评价 33

第六章 总结与展望 35

致 谢 37

参考文献(References) 38

第一章 绪论

1.1引言

四季交替,寒冷的冬天时节,严寒常常让人难以忍耐,从原始时代开始,人类就开始通过外在手段来取暖,以保证度过寒冷的冬天。在远古时代,人类的祖先们最先开始学会了钻木取火获得热源,后来随着时代的发展和人类的进步,火炉,壁炉等取暖方式慢慢走近了人们的生活,从19世纪末开始采暖散热器慢慢取代之前的取暖方式,成为更理想的采暖方式,相比之下,利用散热器采暖的方式更为洁净和方便。传统散热器的工作原理以锅炉生产热水,通过热水循环系统将热水输送到散热器,热水流经整个散热器内腔加热散热器外壳,散热器再通过自然对流传热与辐射散热的方式加热空气,从而使室内温度升高。传统的散热器多依靠集中供暖,大锅炉提供热水的方式获得热源,采暖时间,流量和温度统一调控,用户的选择自由受到极大限制。由于极寒天气的频繁出现和人居环境的要求越来越高,越来越多的地区对采暖散热器提出了需求,但是,在原有建筑中加装水暖散热器不仅需要耗费大量管材,人力及资金,也会对建筑结构造成一定的破坏。故后来又出现了电加热式散热器,一定程度上弥补了集中供暖水暖散热器的不足,但是热媒介质必须充满整个散热器内腔空间,对散热器材料性能提出了极高的要求。空调采暖看似一种较为理想的采暖方式,但是人们发现,利用空调采暖虽然可以较为快速和灵活地改善室内温度,但存在大程度降低室内空气湿度的弊端,令人身体感到不适。迄今为止,壁挂式散热器仍然是室内较为理想的采暖工具。

我国地域辽阔,大部分地区冬天温度达到零下,随着生活水平的不断提高和科技的不断进步,越来越多人希望家中能拥有独立的采暖装置。此外,人们对散热器也提出了更高的要求。在能源短缺的今天,节能减排也成为了家居电器行业追求的新目标。目前一款热管型新型散热器已处于研发测试阶段,本文在对此新型散热器进行大量研究及测试的前提下,对热管型散热器的散热量,效率及相关的热工性能评价进行相关探讨。

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