Abstract
The paper focuses on the experimental measurement of the accumulation of hot water storage with its thermal stratificational thermal layers by means created of elementary conical elements. The basic principle of these elements is the automatic distribution of water temperatures according to temperature and volume flow for a specified time of storage of heat energy. This process involves maintaining the thermal stratification at different height levels of the storage tank, which minimizes the process of balancing the hot water. The aim of the experiments was to demonstrate the thermal energy layering in the 1050 l water storage accumulator in 1 hour depending on the different water flow rates from 250 to 1000 l/h from the heat source.
Highlights
In Slovakia, the domestic hot water preparation is mainly realized in convectional storage water heaters, where the water supply is solved at the bottom of the tank, heated up and the hot water outlet is at the highest point of the water storage
The paper focuses on the experimental measurement of the accumulation of hot water storage with its thermal stratificational thermal layers by means created of elementary conical elements
This process involves maintaining the thermal stratification at different height levels of the storage tank, which minimizes the process of balancing the hot water
Summary
In Slovakia, the domestic hot water preparation is mainly realized in convectional storage water heaters, where the water supply is solved at the bottom of the tank, heated up and the hot water outlet is at the highest point of the water storage. It is mainly used to increase the efficiency of solar energy systems and other heat sources by storing hot water in layers in the stratification storage tank [1, 2]. The measuring module consisted of a thermally no-insulated 1050 L volume storage tank of steel, with 890 mm diameter and 1730 mm height (Fig. 2) in which there was no hot water extraction during the experiment. It is equipped with an expansion vessel with a capacity of 50 l with an automatic vent valve and a drain valve with a location at the top of the tank. The aim was to observe the process of creation of the thermal layers with 45 °C temperature over time
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