Cooling currently represents a large share of energy consumption in the world, resulting from global warming, the expansion of the built environment and the rise of the standard of living comfort. In the summer, when the need for cooling is the highest and the most solar radiation is available, it makes sense to use a thermally driven cooling system. In the diploma, the main subject of study is the solar cooling system, which is built into the energy self-sufficient building of the Laboratory for Sustainable Technologies in Buildings, called Celica. We created numerical models in the Excel program to analyze the operation of individual components of the solar cooling system and validated the results of the numerical calculation with the help of measurements. We have discovered that photovoltaic cells can be used as solar radiation meters. We calculated the daily efficiency of solar energy receivers, which under the measurement conditions ranged from 0,27 to 0,31. We validated the change in temperature in the heat storage tank and found that the heat losses are lower than permitted under the Environmental Design Directive 814/2013. We used a numerical model to calculate the operation of the solar cooling system, we also calculated the daily COP of the cooling device, which ranged from 0,72 to 0,74. In addition to calculation template in Excel, we have also prepared a set of questions for laboratory exercises within the subjects Laboratory for Sustainable Technologies in Buildings.
|
