На английском языке. Магистерская диссертация. Работа выполнена в
Concordia University (Canada), 1990, 216 + XX pp.
ABSTRACT
Thermal analysis of saturated long chain esters of monobasic fatty acids and their binary mixtures. proved them to be suitable energy storage materials. for space heating applications. Based on this knowledge, a ser ie s of experimental investigations was conducted to establish the blending parameters when incorporating a binary mixture of butyl stearate and butyl palmitate (as an Organic Phase Change Material) into gypsum paste, for the purpose of producing energy storage gypsum board. The function of this energy storage gypsum board is to store and save excess energy for later use (i.e. excess heat that come from solar-gain, pumps, heaters, cooking appliances, bathing, lamps, human bodies, etc.) in residential and commercial buildings as well as to regulate the desired temperature inside the living space. Blending was carried out with the help of several types of surface active agents. Blending components such as foaming solutions, emulsifiers, starch, water and pulp paste as well as blending parameters were both prepared and optimized. Various chemical, physical and compatibility tests were conducted on the blended product. Thermal analysis, by differential scanrung calorimetry, was conducted to determine the melting and freezing points of PCM inside the board and to measure the amount of heat released or absorbed by the board during one operating cycle. Finally the blended product was examined by infra red spectrophotometry to determine the degree to which PCM reacts with the other components. Results indicate that not only direct incorporation of PCM in gypsum wallboard is feasible but also that the finalized products are well above ASTM and CSA standards.
ABSTRACT
Thermal analysis of saturated long chain esters of monobasic fatty acids and their binary mixtures. proved them to be suitable energy storage materials. for space heating applications. Based on this knowledge, a ser ie s of experimental investigations was conducted to establish the blending parameters when incorporating a binary mixture of butyl stearate and butyl palmitate (as an Organic Phase Change Material) into gypsum paste, for the purpose of producing energy storage gypsum board. The function of this energy storage gypsum board is to store and save excess energy for later use (i.e. excess heat that come from solar-gain, pumps, heaters, cooking appliances, bathing, lamps, human bodies, etc.) in residential and commercial buildings as well as to regulate the desired temperature inside the living space. Blending was carried out with the help of several types of surface active agents. Blending components such as foaming solutions, emulsifiers, starch, water and pulp paste as well as blending parameters were both prepared and optimized. Various chemical, physical and compatibility tests were conducted on the blended product. Thermal analysis, by differential scanrung calorimetry, was conducted to determine the melting and freezing points of PCM inside the board and to measure the amount of heat released or absorbed by the board during one operating cycle. Finally the blended product was examined by infra red spectrophotometry to determine the degree to which PCM reacts with the other components. Results indicate that not only direct incorporation of PCM in gypsum wallboard is feasible but also that the finalized products are well above ASTM and CSA standards.