Experimental Study On Energy-saving Effect Of Phase Change Microcapsule Building Envelope Structure

In the energy saving and environmental protection is increasingly becoming the focus of attention today, micro encapsulated phase change energy storage materials are getting more and more attention. In this paper, the design of the nine with the ratio of the material as a comparative experiment. It is found that the compressive strength decreased gradually with the increase of phase change material blending volume; in the phase change material ratio remained constant, the strength of the material and the concrete with the ratio, the higher the strength of the material by adding the same amount of phase change materials also has higher strength. The more phase change materials added, the lower the thermal conductivity of the mortar, the better the thermal performance. The mechanical properties and thermal performance of the phase change material component in the comprehensive reference experiment were determined.Four kinds of mixture ratio of mortar or concrete slab is designed according to the phase change wall and the heat storage experiment, test phase change material for inhibiting released during the process of cement hardening of the concrete hydration heat effect, which a for not mixing phase change materials of ordinary concrete as a comparative experiment.Simulate the internal concrete adiabatic environment in a homemade semi adiabatic box, the measured temperature data, analysis of the phase change material can absorb part of the cement hardening process of hydration heat as a latent heat storage and in temperature drop for the normal temperature and then slowly release. This conclusion is demonstrated in mixed in concrete mixing a certain amount of phase change materials can inhibit the temperature cracks inside the concrete due to the release of hardening process of cement hydration heat caused by. From this point of view can to some extent improve the concrete strength.Before study comes to the conclusion that the mix ratio of material as the experimental scheme and in practical engineering environment and build simulation real. In summer high temperature during the day, night low temperature, contrast phase change room and ordinary room of the indoor temperature and regulatory role. Research shows that the phase transitionof retaining structure to improve the indoor thermal environment have significant role: on one hand, it can reduce the indoor temperature, heat insulation effect; on the other hand in automatic air conditioning refrigeration can maximize the save electric energy and reduce the peak load of power grid. Feasibility of the visible phase change enclosure structure in practical engineering.