Glossary, Page 19

Pascal's law

The hydraulic law, also known as Pascal's law, states that if pressure is applied to a liquid in a closed container, then this pressure is transmitted equally in all directions and the magnitude of the pressure does not change. Specifically,…

Passive cooling

Passive cooling is a method of removing heat from various devices and systems without the use of active components such as fans, pumps or compressors. Instead, it relies on thermodynamic principles and the properties of materials for the natural flow…

passive house

An energy-passive house is a house that provides its residents with a high quality indoor environment in winter and summer, and at the same time allows to significantly reduce energy consumption for heating and operation by up to 90% compared to…

PCB

A printed circuit board (abbr. DPS, English printed circuit board, abbreviated PCB; other names see below) is a board made of a non-conductive substrate, on which conductive connections are created based on the wiring diagram of a specific circuit,…

PE-AL-PE-RT

PE-AL-PE-RT is a type of plastic pipe that is composed of several layers of different materials. This type of pipe is made of four layers: The first layer is made of polyethylene (PE), which is known for its high resistance to corrosion and…

PE-HD

PE-HD is an abbreviation for high-density polyethylene (High-Density Polyethylene). It is a polymer from the polyethylene series, which is produced by polymerization of ethylene under high pressure and temperature. PE-HD is known for its high…

PE-RT

PE-RT is an abbreviation for polyethylene with high density and increased resistance to heat (Polyethylene of Raised Temperature Resistance). It is a special type of polyethylene that has been developed for increased heat resistance and the…

PE-X

The abbreviation "PE-X" indicates high-density polyethylene, modified for increased heat resistance and strength. PE-X is often used in the context of piping systems for hot or cold water distribution. These pipe systems are known as PE-X…

Pellets

Pellets are a special type of fuel made from compressed biomass such as wood, sawdust, cereals or plant residues. They are small cylindrical particles with a diameter usually from 6 mm to 8 mm and a length of approximately 10 mm to 30…

PET

Polyethylene terephthalate, abbreviated as PET, is a thermoplastic polymer used to make various plastic products. It has excellent physical and chemical properties that make it suitable for a wide range of applications. It is known for its…

PEX

PEX (Cross-linked polyethylene) is a polymer, namely thermoplastic polyethylene, which is chemically modified to improve its properties. This treatment ensures that polyethylene molecules are cross-linked, which increases its temperature and…

PEX-Al-PEX

PEX-Al-PEX potrubie poznáme aj pod názvom plastohliník.

Phenol

Phenol, also known as carbolic acid, is an organic compound with the chemical formula C6H5OH. It has a characteristic crystalline appearance and a strong odor. Phenol occurs naturally in various plants and is also produced in some chemical…

Phosphates

Phosphates are salts or esters of phosphoric acid (H3PO4). They are composed of phosphorus, oxygen and calcium atoms and have multiple uses in several industries, including the food industry, the chemical industry, the metal industry and…

physical quantity

A physical quantity is a quantity or characteristic that can be measurably expressed by a numerical value and a unit. Physical quantities describe various aspects and properties of phenomena, objects or systems in physics and natural…

PI regulation

PI regulation (Proportional-Integral regulation) is one of the types of regulators used in automation and process control to achieve a desired value (target value) for a specified system or process. This type of regulation combines two basic…

pipe bender

A pipe bender (or lokvar) is a component used to change the direction of flow of a liquid or gas in a pipe by 90 degrees. The shape of the sluice is usually similar to the letter "L" and allows the flow from the main pipe to change direction into a…

pipe disc filter

  A pipe disc filter is a type of filtration equipment used to treat water and other liquids. Its main purpose is to remove mechanical impurities such as particles, sand, sediments and other pollutants to ensure the purity and…

pipe elbow

A pipe elbow is a component used to change the direction of the flow of a liquid or gas in a pipe. It is designed to allow the flow of liquid or gas to change direction by less than 90 degrees. The shape of the elbow is usually curved and can…

pipe end calibration

Pipe end calibration is a process used to check and adjust the accuracy and correct size of pipe or pipe ends that are used in various applications. This process is important so that the pipe end is properly designed and ready for connection to…

pipe reducer

A pipe reducer is a component that is used to transition from one pipe diameter to another that is smaller or larger. Reducers are used in piping systems to change the diameter of the pipe, which can be useful for a number of reasons,…

pitná voda

Pitná voda je sladká voda, nevyhnutná zložka ľudskej potravy. Jej zdrojom je zrážková voda, podzemná voda a s určitým obmedzením voda riek a jazier. Voda je obsiahnutá (v určitom percente) aj v ľudskom…

plast

Plast (iné názvy: plastická látka; menej vhodne: plastická hmota, umelá hmota) je syntetický alebo semisyntetický polymérny organický materiál. Hlavnou spoločnou vlastnosťou plastov je trvalá alebo dočasná…

plasteboard

Drywall is a building material that consists of boards composed of a layer of plaster surrounded by paper. This material is very popular in the construction industry and is used for various purposes in the interior of buildings. Plasterboard…

plasticizer

A plasticizer is a chemical compound that is added to polymer materials, especially plastics, in order to improve their workability, flexibility, resistance to low temperatures and other mechanical properties. Plasticizers work by reducing…