A combination boiler is a boiler that is capable of running on two or more types of fuel or performing several functions at the same time, such as heating and hot water production (DHW). This type of boiler can be equipped with several combustion chambers or burners, which allows the use of different types of fuel, such as gas, diesel, pellets or wood, making the heating system more […]

The Seasonal Coefficient of Performance (SCOP) is a measure of the average annual efficiency of heating or cooling equipment, such as a heat pump, under real-life operating conditions throughout the entire heating season. Seasonal Coefficient of Performance: Key Aspects Measurement: SCOP is the ratio of the amount of heat energy produced to the amount of electrical energy consumed over the entire heating season. What […]

Net heating value (sometimes called lower heating value) is the amount of heat released by the complete combustion of a unit of fuel, excluding the heat lost to water vapor produced during combustion. Net heating value: Key characteristics: Measurement: The parameter is measured in Joules (J) per kilogram (kg) or per cubic meter (m³) of fuel. Difference from gross heating value: In […]

A heating curve (sometimes called a heating curve) is a graphical representation of the relationship between the outside air temperature and the desired flow temperature of the heating system. It is used in weather-dependent heating systems to automatically regulate the flow temperature, ensuring more efficient energy consumption and comfort in the premises. Heating curve and its characteristics: Temperature dependence: The heating curve shows how the […]

A system boiler is a type of heating boiler that is designed to operate in central heating and hot water systems. Unlike traditional boilers, system boilers have built-in components such as an expansion tank and a circulation pump, making them easier to install and maintain. System boiler: main features Built-in components: A system boiler includes elements that […]

A three-pass boiler is a type of heating boiler that has three separate paths (passes) for the flue gases before they leave the boiler through the chimney. Three-pass boiler: main features First pass: Hot flue gases from fuel combustion pass through the first part of the heat exchanger, where intensive heat transfer to the coolant occurs. Second pass: Cooled gases are directed to another part […]

Flue gas losses are heat losses that occur during fuel combustion in a boiler, when some of the heat is lost with the flue gases through the chimney without being transferred to the coolant. These losses are one of the main reasons for the reduction in the efficiency of the boiler. Flue gas losses: main aspects Mechanism of losses: Heat is lost with gases: When fuel is burned […]

Heat loss in boilers is the amount of thermal energy that is lost during boiler operation and is not transferred to the coolant (water, air, etc.). These losses reduce the efficiency of the boiler, decreasing its efficiency (coefficient of performance). The main sources of heat loss include heat leakage through the boiler body, heat lost with flue gases, and heat loss during incomplete combustion of fuel. Heat loss […]

The adsorber of solar collectors is the main element of the solar collector, which absorbs (adsorbs) solar energy and transfers it to the coolant circulating inside the collector. The adsorber usually consists of metal plates or pipes covered with a special selective coating, which effectively captures solar radiation and minimizes heat loss. Adsorber of solar collectors: main functions Absorption of solar energy: The adsorber captures solar radiation and converts […]

Dual-mode hot water heating (DHW) is a system that allows water to be heated in two different ways or modes, providing flexibility and efficiency in the use of heat sources. Dual-mode hot water heating: Key aspects Two heat sources: Typically, a primary and an additional heat source are used. The primary source can be a boiler, heat pump or solar collector, and the additional source can be an electric heater or […]