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temperature

Temperature ( tem-per-uh-cher) is a physical quantity that expresses the degree of hotness or coldness of a substance. It is the manifestation of thermal energy, present in all matter, which is the source of the occurrence of heat, a flow of energy, when a body is in contact with another that is colder or hotter. Temperature should never be confused with heat.
Temperature is measured with a thermometer. Thermometers are calibrated in various temperature scales that historically have used various reference points and thermometric substances for definition. The most common scales are the Celsius scale (formerly called centigrade, denoted as °C), the Fahrenheit scale (denoted as °F), and the Kelvin scale (denoted as K), the last of which is predominantly used for scientific purposes by conventions of the International System of Units (SI).
The lowest theoretical temperature is absolute zero, at which no more thermal energy can be extracted from a body. Experimentally, it can only be approached very closely (100 pK), but not reached, which is recognized in the third law of thermodynamics.
Temperature is important in all fields of natural science, including physics, chemistry, Earth science, astronomy, medicine, biology, ecology, material science, metallurgy, mechanical engineering and geography as well as most aspects of daily life.

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  1. J

    Pipework Banging when boiler gets up to temperature?

    My pipework on my central heating system (taxi duo etc) keeps banging when the boiler gets up to temperature. I have bleed all radiators but didn't seem to do anything? any help will be much apperaticed
  2. D

    Balancing Radiators Thread.

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  3. J

    Max radiator temperature on Boiler

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  4. R

    UFH on S plan plus not getting up to temperature

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  5. M

    Dodgy TRV's ?

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  6. K

    How do I turn my water temperature down?

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  7. C

    Does Slower pump speed= better condensing

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  8. J

    Vaillant ecoTec plus boiler whining and disturbing noise

    Dear everyone, I have a Vaillant ecoTec Boiler in my bedroom and it is making really loud and disturbing noises throughout the day again and again. Sometimes it is relatively quiet, then it is really loud again. These episodes last from a couple of minutes to over an hour and happen any time...
    • John_London
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    • again boiler central heating system ecotec ecotec plus noise oil plus really temperature vaillant
    • Replies: 6
    • Forum: Plumbing Jobs | The Job-board
  9. D

    Rads different temperature

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  10. I

    Outdoor Temperature Sensor

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  11. R

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    • Rich147
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    • Forum: Plumbing Jobs | The Job-board
  12. S

    Vaillant ecotec plus 831 boiler broblem

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  13. Inverness

    Mono basin tap requires check valves or not?

    Open vented hot water and mains pressure cold water. When mixed temperature Could the cold water override the hot causing a poor temperature of the hot. can someone put me right. Thank you.
  14. M

    Particulate in hot water

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  15. O

    Temperature underfloor heating

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    • Old Account
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    • boiler central heating system manifold temperature ufh under floor heating underfloor underfloor heating video
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    • Forum: Plumbing Jobs | The Job-board
  16. M

    Cold water storage temperature

    Got a question A care home I work for has had a Legionella Risk Assessment done, it has highlighted that the water stored in the cold water tanks is over 20 deg C (they recorded it as 20.4 deg C) and its distributed at between 20.8 and 25.6 deg C at various outlets. I measured the water...
  17. S

    Combi Hot Water Temperature

    I just had a new Vaillant ecotec plus 831 combi boiler installed. Everything seems OK so far, but I have a question relating to the hot water temperature. The installer set the temperature to 55 degrees. When running the tap, the water seemed to get very hot - certainly too hot to put my hand...
  18. J

    Elson Coral E Hot Water Storage Low Temperature and Pressure

    I have an Elson Coral E Hot water tank in my all-electric flat. I've had it for about 2 and a half years without any problems, however recently I have noticed that the hot water pressure is not as much as it used to be and the temperature I get from the hot taps is reduced. I have tried...
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    • Forum: Plumbing Jobs | The Job-board
  19. B

    High volume water heating

    Can someone please tell me, what would be the cheapest method of heating 36oC water to 45oC at the rate of 80 Litres per minute for 15 minutes and then maintaining this temperature for an hour? All to be repeated every hour. I will have multiple 1200 Litre baths that will fill within 15 minutes...
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