Glossary: Explanations and Definitions of Terms

A

• AC Motor

  An AC motor (alternating current motor) is powered by alternating current. It is commonly used in fans, air conditioners, and air purifiers because it is durable and low-maintenance. AC motors are cost-effective and provide stable performance at a constant speed.

• Adsorption Dryer

  Adsorption dryers remove moisture from the air by binding water molecules to a desiccant like silica gel. They are particularly suitable for use at low temperatures, where conventional condensation dryers are inefficient.

• Air humidity

  Air humidity refers to the amount of water vapor in the air. Optimal relative humidity is between 40% and 60%. Too high or too low humidity can cause health issues and building damage.

• Air filter

  An air filter removes pollutants such as dust, pollen, and bacteria from the air. In air conditioners, air purifiers, and dehumidifiers, they help improve indoor air quality. There are various types, including HEPA, EPA, and activated carbon filters.

• Airflow

  Airflow refers to the volume of air moved by a device such as a fan or air conditioner. It is measured in cubic meters per hour (m³/h) and determines how efficiently a device can ventilate or cool a room.

• AISI

  AISI stands for "American Iron and Steel Institute" and refers to international standards for steel grades. AISI steels, as often used in dehumidifiers and air conditioners, guarantee durability and corrosion resistance.

• Activated Carbon Filter

  Activated carbon filters absorb odors and pollutants from the air. They are made of porous carbon, providing a large surface area to efficiently bind gases and impurities. They are commonly used in air purifiers.

• Axial Fan

  An axial fan moves air along the axis of the rotating blades. It is used in devices like fans and air conditioners to provide high air throughput at low pressures. Axial fans are ideal for applications that require uniform ventilation.

B

• Bypass Defrosting

  Bypass defrosting is a method in which the refrigerant is temporarily redirected around the evaporator to reduce ice formation. This energy-efficient method is commonly used in modern air conditioners and cooling systems.

C

• Coefficient of performance

  The coefficient of performance, also known as COP, represents the ratio of delivered cooling capacity to electrical energy consumed. It is a measure of the efficiency of air conditioners and heat pumps: the higher the number, the more efficient the system.

• Color

  The color of a device, such as a dehumidifier or fan, affects not only the design but can also indicate functional aspects, such as heat resistance or UV protection. Technical standards often use the RAL color scale as well.

• Compressor

  The compressor is a central component in cooling systems and air conditioners. It compresses the refrigerant, enabling heat transfer in the refrigeration cycle. Compressors come in different designs, such as piston, scroll, or rotary compressors.

• Condenser

  A condenser is a heat exchanger in air conditioning systems that cools the gaseous refrigerant, causing it to return to a liquid state. During this process, the heat stored in the refrigerant is released to the surrounding air.

• CFC

  CFCs (chlorofluorocarbons) were once widely used refrigerants but have been banned due to their harmful effects on the ozone layer. Modern air conditioning units use alternative, more environmentally friendly refrigerants.

• Compressor

  The compressor, also called a pump, compresses the gaseous refrigerant in the refrigeration cycle. Through compression, the pressure and temperature increase, which creates the necessary conditions for heat extraction in the evaporator.

• Construction Heating

  Construction heating refers to the use of heating devices on construction sites to regulate temperatures and continue construction work even in cold weather. Mobile heating devices like electric fan heaters are often used.

• Condensation dryer

  A condensation dryer uses a refrigeration cycle to cool the air and remove moisture. The water condenses and is collected, while the dried air is returned to the room. It is commonly used for dehumidification.

• Condensation drying

  Condensation drying is a process where air is cooled to condense and remove moisture. This principle is used in dryers and dehumidifiers to reduce humidity in a room.

• Condenser

  The condenser is a central component in cooling systems. It cools the hot, compressed refrigerant so that it returns to its liquid state. Condensers are used in air conditioners, refrigerators, and dehumidifiers.

• Condensate

  Condensate forms when humid air is cooled and the water vapor turns into liquid water. In dehumidifiers and air conditioners, the condensate is collected and either drained or evaporated to dry the room.

• Condensate pump

  A condensate pump is used to drain the collected condensate water from an air conditioning unit or dehumidifier. It is mainly used in devices that operate below the drainage level and ensures automatic water discharge.

• Condensate tray

  A condensate tray collects the condensate water that forms in dehumidifiers and air conditioners. It serves to store the water until it evaporates or is drained. Regular maintenance prevents overflow and water damage.

• CO2 Equivalent

  The CO2 equivalent is a unit of measurement that compares the climate impact of greenhouse gases relative to carbon dioxide (CO2). In climate and ventilation technology, this value helps assess the environmental friendliness of refrigerants.

• COP

  COP stands for "Coefficient of Performance" and is a measure of the efficiency of heating or cooling systems. The COP value indicates the ratio of heat or cold output to energy input; the higher the value, the more efficient the system.

D

• dB(A)

  dB(A) is a unit of measurement for sound level that takes into account the sensitivity of the human ear. In air treatment technology, dB(A) is used to specify the noise level of devices such as air conditioners or dehumidifiers.

• DC Motor

  A DC motor is powered by direct current. It is characterized by high efficiency and precise controllability, making it commonly used in modern devices like fans or dehumidifiers.

• Defrosting

  Defrosting describes the process of removing ice that forms on the heat exchangers of devices like dehumidifiers or air conditioners. This occurs automatically or manually to maintain the efficiency of the device. There are various defrosting methods, such as electric heating or hot gas defrosting.

• Defrost Protection Circuit

  The defrost protection circuit prevents the evaporator in air conditioners or dehumidifiers from freezing due to condensation and cold. This is achieved through temperature monitoring and periodic shutdown of the cooling function.

• Dehumidification

  Dehumidification is the process of removing moisture from the air. Dehumidifiers reduce humidity and prevent mold growth. They are ideal for damp rooms like basements or bathrooms.

• Dew Point

  The dew point is the temperature at which air cools enough for water vapor to condense into water droplets. In air conditioning, the dew point is important for controlling condensation and moisture problems.

E

• EC Motor

  An EC motor (Electronically Commutated Motor) combines the advantages of AC and DC motors. It offers high efficiency and precise control. Due to electronic commutation, EC motors are quieter, more energy-efficient, and longer-lasting, making them ideal for ventilation systems.

• Electric Heater Fan

  An electric heater fan is a compact heating device that converts electrical energy into heat and blows it into the room using a fan. It is particularly suitable for temporarily heating rooms, for example on construction sites.

• Energy Consumption

  Energy consumption indicates how much electrical energy a device, such as an air conditioner or dehumidifier, requires during operation. Low energy consumption is crucial for reducing operating costs and environmental impact.

• EPA

  EPA stands for "Efficient Particulate Air" and is a filter class used in air purifiers. EPA filters remove fine particles from the air and provide lower filtration performance than HEPA filters, but are more efficient than simple air filters.

• Evaporator

  The evaporator is a crucial part of the refrigeration cycle in air conditioning and cooling systems. Here, the liquid refrigerant evaporates and absorbs heat from the surroundings, leading to a cooling effect in the room.

F

• Fan

  A fan moves air in a room or device. In air conditioning technology, it is used for ventilation, cooling, or air circulation. There are different types, such as axial or radial fans, which differ in airflow and pressure buildup.

• Filter

  Filters in air purifiers, dehumidifiers, and air conditioning units remove impurities such as dust, pollen, or odors from the air. There are various types of filters, including EPA, HEPA, and activated carbon filters, depending on application and requirements.

G

H

• Heat Recovery

  Heat recovery refers to the use of thermal energy obtained from exhaust air in ventilation and air conditioning systems. This heat is used to preheat fresh air, significantly reducing energy consumption.

• HEPA

  HEPA (High Efficiency Particulate Air) is a filter class that removes at least 99.95% of particles with a size of 0.3 micrometers from the air. HEPA filters are ideal for allergy sufferers and are used in air purifiers and vacuum cleaners.

• Hot Gas Defrosting

  In hot gas defrosting, hot refrigerant gas is passed through the evaporator to melt ice. This process is particularly effective and is used in professional dehumidifiers and air conditioning units to maximize operating time.

• Hot Water Heating Coil

  A hot water heating coil is a heat exchanger that uses hot water to warm air in an air conditioning or ventilation system. It is commonly used in buildings to ensure efficient and even room heating.

• Hygrometer

  A hygrometer measures the humidity in a room. It is an essential device for monitoring indoor climate and is often used in conjunction with dehumidifiers or humidifiers to ensure optimal moisture levels.

• Hygrostat

  A hygrostat is a control device that measures humidity and automatically regulates dehumidifiers or humidifiers to maintain a desired moisture level. It ensures an optimal indoor climate and prevents mold growth.

I

• Inverter Compressor

  An inverter compressor regulates the speed of the compressor in air conditioning systems. This allows for precise temperature control and energy savings, as the compressor only operates at the necessary power level when needed, instead of constantly turning on and off.

• Ionizer

  An ionizer improves air quality by releasing negative ions that bind to and neutralize harmful particles in the air. Used in air purifiers, an ionizer can reduce dust, pollen, and odors.

• IP Protection Class

  The IP protection class (Ingress Protection) indicates how well a device is protected against the ingress of dust and water. It consists of two digits: the first refers to protection against solid particles, and the second refers to protection against liquids.

K

• k-value

  The k-value, also known as thermal conductivity, indicates how well a material conducts heat. A low k-value means better thermal insulation. In air conditioning technology, this value is important for selecting insulation materials.

L

• Leak Test

  The leak test checks whether a closed system, such as an air conditioning unit, has leaks through which refrigerants could escape. It is crucial for reducing environmental impact and ensuring the system's efficiency.

M

• Moisture Meter

  A moisture meter measures the moisture content in the air or materials. It is used to control indoor humidity and is a useful tool for the operation of dehumidifiers or humidifiers.

• Moisture Level

  The moisture level indicates the relative humidity as a percentage. An optimal moisture level is between 40% and 60% to ensure a comfortable indoor climate and prevent mold growth.

• Mold

  Mold forms in rooms with high humidity and insufficient ventilation. It can be harmful to health and cause building damage. Dehumidifiers help reduce humidity and prevent mold growth.

N

• Noise Level

  The noise level describes the loudness of a device, measured in decibels (dB). In climate control and air purification technology, a low noise level is crucial for comfort, especially in living and sleeping areas.

O

• Odor Neutralization

  Odor neutralization in air purifiers is often achieved using activated carbon filters. These remove unwanted odors by absorbing odor-causing molecules. Humidifiers and air purifiers can thus contribute to improving air quality.

• Overpressure System

  An overpressure system creates a higher pressure in a room or building than in the surrounding environment to prevent the ingress of pollutants or moist air. Such systems are often used in clean rooms and specialized work areas.

P

• Particulate Filter

  Particulate filters, also known as HEPA filters, remove tiny particles such as dust, pollen, and bacteria from the air. They are used in air purifiers and air conditioning systems to improve air quality and reduce allergens.

• Power consumption

  Power consumption describes how much electrical energy a device consumes during operation, measured in watts (W). It is an important indicator of the energy consumption and operating costs of dehumidifiers, air conditioners, and fans.

• Power usage

  Power consumption indicates how much electrical energy a device requires. It is measured in kilowatt-hours (kWh). In air conditioning units and air purifiers, power consumption is an important factor that affects operating costs.

• Power thyristor

  A power thyristor is a semiconductor device that can control high currents and voltages. In climate technology, it is used to regulate heating elements or fans to enable precise power control.

• PTC Heating element

  A PTC heating element (Positive Temperature Coefficient) is a self-regulating heating element that reduces the current flow once a certain temperature is reached. This makes it more efficient and safer. It is used in electric heaters and air conditioning units.

R

• Radial Fan

  A radial fan moves air radially, meaning from the center to the outside. It generates high pressure and is used in air conditioning systems and dehumidifiers to ensure even and efficient air distribution.

• RAL

  RAL is a color system that defines a standardized palette of colors. In air conditioning technology and household appliances, the RAL system is frequently used to clearly identify colors and standardize production.

• Refrigeration cycle

  The refrigeration cycle is the heart of air conditioning and cooling systems. It is based on the evaporation and condensation of refrigerants to remove and transport heat. Key components include the compressor, evaporator, and condenser.

• Refrigerant

  Refrigerants are substances used in cooling and air conditioning systems to transport heat. Modern refrigerants are more environmentally friendly and have a lower Global Warming Potential (GWP) compared to earlier substances like CFCs.

• Relative Humidity

  Relative humidity is the percentage of water vapor in the air compared to the maximum amount that air can hold at a given temperature. A value of 50% means the air contains half of the possible moisture.

• rF

  rF stands for relative humidity and describes the proportion of water vapor in the air compared to the maximum possible amount at a specific temperature. It is expressed in percentage and significantly influences the indoor climate.

S

• Side Channel Blower

  A side channel blower is a type of fan that increases air pressure. It is often used in industrial applications, such as ventilation or in air conditioning systems, where high pressure differentials are required.

• Silica Gel

  Silica gel is a desiccant that absorbs moisture from the surrounding air. It is commonly used in dehumidifiers and packaging to bind moisture and prevent mold growth and corrosion.

• Stainless Steel

  Stainless steel is a particularly durable and corrosion-resistant metal. It is commonly used in air conditioning units and dehumidifiers because it is long-lasting and does not rust even in humid conditions.

• Sound Pressure Level

  Sound pressure level is measured in decibels (dB) and describes the loudness of a sound. For air conditioning units and air purifiers, a low sound pressure level is important to ensure a quiet and comfortable indoor environment.

T

• Thyristor

  A thyristor is a semiconductor device used as a switch in electrical systems. In air conditioning and heating systems, it is used to control current flows, allowing precise regulation of power and temperature.

• Time-Controlled Defrosting

  Time-controlled defrosting is a feature in air conditioners and dehumidifiers where the evaporator is automatically defrosted at regular intervals. This ensures consistent performance of the device.

• Tube Evaporator

  A tube evaporator is a heat exchanger used in refrigeration and air conditioning systems. The liquid refrigerant evaporates inside it, extracting heat from the surrounding air. The evaporator is typically made of copper or aluminum tubes for efficient heat transfer.

• Turbo Blower

  A turbo blower is a powerful fan that moves large volumes of air at low pressure. It is commonly used in air conditioning units and ventilation systems to ensure fast and efficient air circulation.

U

• U-Value

  The U-value measures the heat transfer through a material and indicates how well a component is insulated. In air conditioning, the U-value is important for evaluating the efficiency of thermal insulation and energy savings.

V

• VCC

  VCC stands for "Variable Cooling Capacity" and describes a technology that adjusts the cooling capacity of air conditioning systems to the actual load. This optimizes energy consumption and allows for more consistent temperature regulation.

W

• Water Basin Condenser

  A water basin condenser uses water to dissipate heat from a refrigerant. This type of condenser is found in larger air conditioners and cooling systems that require high cooling capacities. They are particularly common in industrial applications.

• Water Separator

  A water separator removes water or moisture from an air or gas circuit. In air conditioners and dehumidifiers, it prevents condensed water from entering the system and causing malfunctions.

• Water-Cooled Condenser

  A water-cooled condenser uses water instead of air to cool the refrigerant. This technology is commonly used in larger air conditioning systems and industrial cooling systems, as it is more efficient and performs better at high outdoor temperatures.

Z

• Zeolite

  Zeolite is a porous mineral used in air dehumidification. It can absorb large amounts of moisture from the air and is therefore ideal for use in adsorption dryers and air purification systems.