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

潜在的热量存储是一种使用相变材料（PCM）的热存储技术。 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.可以澄清的是，氯化盐足以在不降低潜热的情况下调节熔点。另外，尽管在小容器中只观察到这些物质的小型超冷却，但在实际情况下，这并不是问题。同样，检查了这些PCM的热汇率和条件。从这些测试中，作为热量储能系统的PCM获得了很大的可能性。隔离，提出了颗粒状PCM和空气之间的直接热交换系统。 PCM由颗粒状的多孔培养基和石蜡组成。它的颗粒直径约为1-3mmφ。该系统的优点是，在相变时，传热系数保持相对大且连续。进行了与PCM和空气之间的热交换相关的柱实验。此外，还制定了计算机仿真程序，并通过提案非二维时间讨论了阶段变更期。接下来，检查了稳定通风系统室外空气温度和地板空调系统的新校长