权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

ENERGY CONSERVATION OF BUILDINGS BY USING PHASE CHANGE MATERIAL

使用相变材料的建筑节能

基本信息

批准号：
11694113
负责人：
NAGANO Katsunori
金额：
$ 4.16万
依托单位：
HOKKAIDO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2001
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11694113/
关键词：
Phase Change Material Thermal Energy Storage Latent heat storage Granulated PCM Direct contact Waste Heat Under floor Ventilation Night time electricity 相変化蓄熱材 PCM DSC 熱応答試験硝酸マンガン・6水和物

项目摘要

Latent heat storage is a kind of heat storage technology by using phase change materials (PCM). Authors proposed Mn(NO_3)_2・6H_2O mixed with MnCl_2・4H_2O as a new PCM for storing cold energy during night time for cooling system and Mg(NO_3) _2・6H_2O mixed with MgCl_2・6H_2O as a new PCM for storing urban waste heat such as surplus heat from co-generation system. It was clarified that chloride salts are adequate to modulate the melting point without drop of the latent heat. In addition, although only small super cooling was observed for these substances in a small vessel, that is not problem in the actual cases. Also, heat exchanging rates and stabilities of these PCM were examined. From these tests, great possibility was obtained as a PCM for thermal energy storage system.Next, a direct heat exchange system between granulated PCM and air was proposed. PCM is consisted from granulated porous media and paraffin. Its particle diameter is about 1〜3mmφ. Advantage of this system is that heat transfer coefficient is kept relative large and continuous during phase change. Column experiments related with heat exchange between PCM and air were conducted. Also, a computer simulation program was made and phase change period was discussed by the proposal non-dimensional time. Next, applications this new principal to stabilization the outdoor air temperature for the ventilation system and to the under floor air conditioning system were examined

潜热蓄热是一种利用相变材料蓄热的技术。提出了Mn（NO_3）_2·6H_2O与MnCl_2·4H_2O混合作为一种新型相变储冷剂，用于供冷系统的夜间蓄冷; Mg（NO_3）_2·6H_2O与MgCl_2·6H_2O混合作为一种新型相变储冷剂，用于城市余热（如热电联产系统的余热）的夜间蓄冷。澄清了氯化物盐足以调节熔点而不降低潜热。此外，虽然在小容器中观察到这些物质只有很小的过冷，但在实际情况中这不是问题。此外，这些PCM的热交换速率和稳定性进行了检查。通过这些试验，获得了相变材料作为热能储存系统的巨大可能性。其次，提出了颗粒相变材料与空气之间的直接热交换系统。PCM由颗粒状多孔介质和石蜡组成。其粒径约为1 ~ 3 mm φ。该系统的优点是在相变过程中传热系数保持相对较大且连续。进行了相变材料与空气之间热交换的相关柱实验。并编制了计算机模拟程序，采用无量纲时间的概念对相变周期进行了讨论。其次，研究了该原理在通风系统室外空气温度稳定和地板下空调系统中的应用