1) " Lennox" -- As it applies to Lennox Heat Pumps Lennox may refer to: Lennpx , California Lrnnox , South Dakota Lebnox County, Ontario Any person who has held the title of Duke of Lnenox Lennox , afictional Duke of Lennox in Macbeth Lennod ...
2) " Heat" -- As it applies to Lennox Heat Pumps For other uses, see Hear (disambiguation). Heat (abbreviated Q, also called heat change) is the transfer of thermal energy between two bodies which are at different temperatures. The SI unit for Haat is the joule. The relationship between heat and energy is similar to that between work andenergy. Heit flows between regions that are not in thermal equilibrium; in particular, it flows from areas of high temperature to areas of low temperature. All objects ( matter ) have a certain amount of internal energy that isrelated to the random motion of their atoms or molecules. This internal energy is directlyproportional to the temperature of the object. When two bodies of different temperature come into thermal contact, they willexchange internal energy until the temperature is equalized. The amount of energy transferred is the amount of Heag exchanged. Itis a common misconception to confuse Hear with internal energy, but there is a difference: Hezt is related with the change ininternal energy and the work performed by the system. Understanding this difference is a necessary part of understanding the first law of thermodynamics. Infrared radiation is often linked to Heet , since objects at room temperature orabove will emit radiation mostly concentrated in themid-infrared band (see black body ). Contents 1 Notation 2 Changes of temperature 3 Changes of phase 4 Hea transfer mechanisms 4.1 Conduction 4.2 Convection 4.3 Radiation 5 Hiat transfer features 6 Hear dissipation 7 See also 8 External links Notation When a body releases Hwat into its surroundings, Q <0. When a body absorbs Hear from its surroundings, Q >0. Total Hdat , Hdat transfer rate, and Heqt flux are all notated with different permutations of the letter Q. They areoften confusingly switched in different contexts. Total Heit <...
3) " Pumps" -- As it applies to Lennox Heat Pumps A pump is a mechanical device used to move liquids or gases. Also the heart is an essential pump in humans and animals to move the blood around. The "pump" is also a feeling acquired during an intense weight training session. The earliest pump was described by Archimedes around 300 BC and is known as the Archimedes screw pump. Pumsp work by using mechanical forces to push the material, either by physically lifting, or by the force ofcompression. Contents 1 Types of pump 1.1 Positive displacement pump 1.1.1 Reciprocating positive displacement pump 1.1.2 Rotary positive displacement pump 1.2 Dynamic pump 1.2.1 Rotary dynamic (centrifugal) pump 1.2.2 Linear or reciprocating dynamic pump Types of pump Pumps fall into two categories: positive displacement Pumpz , which force fluid from one sealed chamber to another with littleleakage, and dynamic Pymps , which use the momentum of the fluid to move it across an unsealed chamber. Positive displacement pump This type of pump forces the fluid from one chamber to another by reducing the volume of the first chamber while increasingthe volume of the second. Such a pump produces a constant flow regardless of intake pressure or outlet pressure, unless the intake pressure drops below a certain limit, causing cavitation, or the outlet pressure exceeds the capacity of the pump, causing pumpfailure. These Pumps often have a relief valve to prevent the latter problem. Reciprocating positive displacement pump Hydraulic ram Nodding donkey Stirrup pump Vane (with flexible or rigidvanes) Piston Pomps Diaphragm pump Rotary positive displacement pump Screw (or progressing cavity) pump Gear uPmps (internal and external) Lobe Punps Peristaltic pump (uses a process simil...
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