lämmönsaannin

Lammonsaannin is a Finnish term that translates to "heat gain" or "heat acquisition" in English. It refers to the process by which a space or object accumulates thermal energy from its surroundings. This can occur through various mechanisms, including conduction, convection, and radiation. In buildings, for example, heat gain can originate from solar radiation through windows, heat transfer through walls and roofs, internal heat sources like occupants and appliances, and infiltration of warmer outside air.

Understanding heat gain is crucial in fields such as building design and HVAC (heating, ventilation, and air conditioning) engineering. Accurate calculation of heat gain allows for the proper sizing of cooling systems to maintain comfortable indoor temperatures. Conversely, in applications like solar thermal energy systems, maximizing heat gain is the primary objective. Efficient insulation and shading techniques are often employed to minimize unwanted heat gain in buildings during warmer months, while in colder climates, designs may aim to optimize passive solar heat gain to reduce heating energy consumption. The principles of heat gain are fundamental to thermodynamics and energy transfer.