A comparison of the calculation of the volume of the storage tank to boilers with manual application of wood in a family house according to the criteria of subsidy programs and the ČSN EN 303-5 standard shows a relative agreement, respectively the acceptability of the use of both methods. The standard provides a minimum value. In practice, the resulting volume usually consists of two tanks.

This article presents a simulation analysis conducted at the Institute of Environmental Engineering at CTU, as part of the international exercise IEA EBC Annex 82. The aim of the joint exercise, which involved more than ten international research teams from different sectors, was to test and compare different approaches towards achieving energy flexibility in buildings on the basis of a unified exercise assignment. The Czech team based its study on a comprehensive simulation of the energy behaviour of buildings, including a detailed numerical model of the heating, hot water preparation, cooling and ventilation systems. The model was used to study the building potential for providing energy flexibility and future responsibilities of building operators in the context of smart energy grids.

The article discusses the history of sanitation installation, i.e. water installation, drainage systems inside buildings and gas installation pipework for buildings from the earliest times to 1948 and is primarily focused on the history of this field in the territory of the former Czechoslovakia. It also deals with the history of the plumbing trade, contemporary legal regulations, technical standards and professional literature on the territory of the former Czechoslovakia.

The efficiency of the combustion source during the mandatory inspection of the heating and ventilation system according to the Energy Management Act can only be measured during the heating season and with a properly calibrated flue gas analyzer.

The contribution summarizes the fundamental chapters of the transported standard to re-demolition audit and building dismantling as a standard procedure for structure removal. The purpose of the standard will be to prescribe how the pre-demolition audit should proceed, what information it should contain, and how the deconstruction of the building should take place, in order to achieve the maximum possible utilization of the obtained materials. The motivation is primarily the return of quality raw materials to production and the reduction of primary resource extraction, which is one of the goals of sustainable development.

The preserved detailed data on the consumption of fuel (coke) for heating and hot water preparation in functionalist apartment building from the 1930s led to the idea to compare the energy consumption of these buildings at the time of their construction with the present day and to observe how the modernization interventions in both the heating system and the actual construction of the building are manifested and to quantify these modernization interventions.

The authors deal with the use of waste heat from the data center for heating and hot water preparation. They design solutions according to the needs of the object with a combination of apartments/offices and evaluate the potential savings, financial, energy and ecological benefits, which have an impact on the ESG assessment.

The article evaluates the cooperation of the air/water heat pump with large-scale heating systems and determines the seasonal heating factors. The measurements revealed SPF slightly better than the manufacturer's.

PV systems are gaining ground as a standard for family homes. Apartment buildings are lagging behind, but design optimization and community energy bring new possibilities.

Evaluation of the conditions and prerequisites for deploying a cogeneration unit that will serve as a source of electrical and thermal energy for an agricultural cooperative that plans to operate a biomethane station.

Three-year measurements of indoor air temperature and relative air humidity in a large office were evaluated for the month of February. The temperatures of the supply heating medium were also assessed.

The requirements for energy efficiency, low installation costs, and thermal comfort can be advantageously met by operation with a relatively low heating water temperature in the winter, or high temperature of the cooling water in the summer when floor, ceiling or wall transfer elements are used.

The article deals with various possibilities and research concepts of controlling heat pumps operating in heating systems. It also presents methods for controlling the thermal performance of heating systems with heat pumps and concludes with recommendations for the most suitable solution.

The resulting value of the heating factor of a combination of two heat pumps, in which the first heat pump is the heat source for the second heat pump, can be determined fairly easily in common technical application practice. The procedure and the resulting formula are given in the article.