The inclusion of solar energy, which is a renewable energy source, in heating systems in buildings provides significant advantages. To make heating with solar energy sufficient and efficient, nanofluids are used in solar collectors. In this study, a hybrid heating prototype is produced, a control mechanism controlling the operation of the hybrid system is established and tests are carried out by including monoethylene glycol, propylene glycol, aluminum oxide, copper oxide, titanium dioxide, especially triethylene glycol-based nanofluids in the system. Finally, a new nanofluid is obtained by mixing triethylene glycol with aluminum oxide and is tested on the prototype. With the tests carried out under the same conditions, the temperature differences of the nanofluids in a certain time period are observed and recorded. It is observed that the mixture of water and triethylene glycol provided the lowest temperature increase by providing a temperature increase of 8.6 °C in the range of 0-90 minutes. It also is observed that the highest temperature increase is achieved with the 21 °C temperature increase of the pure water and aluminum oxide mixture. Although the water and triethylene glycol mixture performs more inefficiently than other mixtures, it is thought that it can be used for heat storage since it heats up for a long time and cools down for a long time.

Today, the insufficient of speed, quality, and precision in the service provided with the increasing density in the enterprises located in social areas, and the fact that standard products are made rather than optional products are observed as a disadvantageous situation in terms of people's demands. Although liquid filling systems used in industrial production facilities include features that are important for production such as speed, quality, and efficiency, they arise problems in social areas in terms of design, size, economy, and personalized production. In solving the problems, it is realized a special liquid filling system that both meets the needs of people to highly and includes the features of the production systems used in the industry. In the study, a fruit juice filling system that produces fruit juice in the ratio and amount desired by the user using four different juices is proposed. It is thought that when the study done by reducing the need for space with a compact design and increasing the production speed with station-based processes is applied to the private sector, both operating costs are reduced, and end-user demands are met to the desired extent. It is observed that the effect of the cycle time on the unit production time is reduced in the mass production method used in the system, while the cycle time is directly equal to the production time in the private production method. In addition, when the mass production method is used, it is observed that increasing the selection of different fruit juices reduces the production time, as it distributes the filling time to more than one station.