Abstract
The paper presents the results of experimental studies on the consumption of hot water, energy obtained from the solar installation in the production process and the degree of coverage of usable and final energy with solar collectors. Thermal energy measurements from solar collectors cover the measurement period from 2011 to 2017. During this period, the annual final energy obtained from solar collectors ranged from 1033-1576 kWh. Monthly and annual demand for usable and final energy for the demand for hot water is presented depending on the amount of hot water used. Monthly actual consumption of hot water in the measurement period ranged from 3.57-9.16 m3. During this period, the number of residents has changed from 3 to 5 people. Annual coverage of energy useful for heat and energy by solar panels in the years 2011-2017 fluctuated from 38.0%-63.9% and 25.2%-42.3% for final energy. Monthly energy coverage ranged from 5.5% to over 100%. Covering energy above 100% in practice means getting a higher temperature of hot water in the outlet valve than expected.
Highlights
Devices that produce energy to heat hot tap water can be supplied with various fuels, such as electricity, natural or liquid gas, coal, coke, wood, fuel oil, geothermal energy, biofuel or solar
The following chapters present the actual consumption of hot tap water in a single-family house in a period of 7 years, the amount of thermal energy acquired by solar collectors as well as monthly and annual coverage of usable and final energy generated by the solar collectors
The presented research results should be treated as a case study. They refer to one specific building, inhabited by a specific number of people and equipped with a non-standard hot water installation
Summary
Devices that produce energy to heat hot tap water can be supplied with various fuels, such as electricity, natural or liquid gas, coal, coke, wood, fuel oil, geothermal energy, biofuel or solar. Each user is interested in incurring the lowest possible costs, and periodically even zero This goal can be realized for many months of the year, using a hot tap water heating installation with solar collectors. The following chapters present the actual consumption of hot tap water in a single-family house in a period of 7 years, the amount of thermal energy acquired by solar collectors as well as monthly and annual coverage of usable and final energy generated by the solar collectors. The monthly demand for hot water related to the area of the heated building is calculated according to the formula: GG = VV ∙ AA · LL (2). January February March April May June July August September October November December
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