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Recycling
Recycling is the creation of new products from used materials. Recycling is not the same as reuse, where the object is reused for its original purpose.
Recycling
Recycling is the creation of new products from used materials. Recycling is not the same as reuse, where the object is reused for its original purpose.
Refrigerant
The task of the refrigerant is to transfer energy from one level and dispose of it at a higher level. There are many different types of primary refrigerants, each with technical substance characteristics, such as pressure, temperature, heat content, specific volume, and entropy for every need.
Refrigerant charge
Refrigerant charge is a term used for the type and mass of refrigerant a refrigeration plant will hold to perform under the given conditions. The type of refrigerant must be applicable for the application and the ambient conditions. For example, the ASHRAE standards are general recommendations regarding local ambient conditions for inside and outside temperatures in both summer and winter in any country.
Relative humidity
Relative air humidity is a term used to describe the amount of water vapour in the air. Relative air humidity is the ratio of the water vapour’s partial pressure to the saturated vapour pressure at a given temperature. Relative air humidity is expressed as a percentage.
Retention time
Retention time describes the time, in which a volume of wastewater is stored within the pumping installation, pump sump, pipeline, detention basin etc.
Return temperature
Return temperature is a term describing the return water temperature in a heating system. This term is used for both sub-components and for a complete heating system.
Roof tank systems
Roof tanks are fresh water tanks, placed atop high-rise buildings. Roof tank installations are used in water supply applications mainly due to unstable water mains and unstable power supply.
Rotating part of shaft seal
The rotating part of the seal is fixed on the pump shaft and rotates in the liquid during pump operation.
Rubber
Rubber is used as a part of the shaft seals that prevent the pumped media from running out of the pump.