Download e-book for kindle: Cool thermodynamics : the engineering and physics of by Jeffrey M. Gordon

By Jeffrey M. Gordon

ISBN-10: 142372108X

ISBN-13: 9781423721086

ISBN-10: 1898326908

ISBN-13: 9781898326908

This booklet is aimed at these drawn to the engineering and physics of airconditioning and refrigeration units (chillers). Analytic thermodynamic types are built for a wide selection of cooling structures and a extensive diversity of working stipulations. those versions are simply carried out within the box or laboratory. even supposing the authors concentration upon mechanical (electrically-driven) chillers - basically reciprocating and centrifugal machines - there's additionally tremendous fabric on heat-driven absorption chillers. warmth pumps and warmth transformers also are addressed. a number of much less universal chiller kinds also are handled, akin to thermoelectric, thermoacoustic and vortex-tube devices. the cloth is gifted in a fashion which can entice either the engineer and the physicist, and will shape a bridge among the 2 groups of their research and presentation of cooling platforms. In every one bankruptcy, the authors try and catch the fundamental physics of the matter, and to emerge with quantitatively actual predictive and diagnostic instruments. they target for easy thermodynamic versions the place the useful dependences of chiller functionality at the significant working variables are obvious. And all of the types offered are required to face the attempt of comparability opposed to experimental functionality facts. The reader is proven how chillers may be considered as input-output units, considered from the skin and probed with simply externally-measurable parameters comparable to strength enter, cooling expense and coolant temperatures. measurable parameters corresponding to energy enter, cooling price and coolant temperatures. the kind of info wanted by means of chiller brands and builders in designing and assembling new designs is alsoprovided. How will a given amendment in a chiller part impact potency and cooling price? what's the blend of working stipulations of the person parts that maximizes chiller potency at a required cooling fee? a few of the chapters can function an industry-oriented direction adapted to cooling engineers. The booklet may also represent a part of a college path on cooling structures. Sections of the booklet could be incorporated in introductory and complex thermodynamics classes. either engineering-oriented and physics-oriented themes are coated in many of the chapters. greater than a dozen instructional examples are included.

Show description

Read or Download Cool thermodynamics : the engineering and physics of predictive, diagnostic and optimization methods for cooling systems PDF

Similar ventilation & air conditioning books

Download e-book for iPad: Sustainable Solar Housing: Strategies and Solutions by S. Robert Hastings, Maria Wall

This far-reaching and authoritative two-volume set examines quite a number power recommendations for low-energy construction layout, contemplating various techniques (energy conservation and renewable strength) and applied sciences (relating to the development envelope, air flow, warmth supply, warmth creation, warmth garage, electrical energy and control).

Get Electricity for Refrigeration, Heating and Air Conditioning, PDF

Electrical energy FOR REFRIGERATION, HEATING, AND air-con, 8E is definitely the right e-book for college students and starting technicians. It offers readers with the elemental electric rules essential to comprehend modern-day glossy regulate structures. the sensible procedure taken during this ebook permits readers to concentration completely at the electronics details they'll use within the box, with out bogging them down in pointless idea.

Download e-book for kindle: Tragwerke: als Elemente der Gebäude- und Innenraumgestaltung by Paul Kuff, Karl Schwalbenhofer, Alice Strohm

Tragwerke sind unverzichtbar für jedes Gebäude. Tragwerke sind aber auch in ihren verschiedenartigen Ausformungen Gestaltungselemente für Gebäude und Innenräume. In diesem Buch werden konstruktiv-gestalterische Entscheidungen verknüpft mit elementaren Kenntnissen des Tragverhaltens. In einer übersichtlich strukturierten Systematik werden die Grundtypen von Tragsystemen entwickelt und ihre spezifischen Gestaltungsformen dargestellt.

UFAD guide : design, construction, and operation of by American Society of Heating, Refrigerating and PDF

Concerning the BOOKThe use of underfloor air distribution (UFAD) is expanding in North the USA as an answer to house conditioning matters. This layout consultant presents counsel within the making plans, building, and operation of UFAD platforms, whereas conscientiously detailing the key modifications among UFAD and extra conventional different types of house conditioning.

Extra info for Cool thermodynamics : the engineering and physics of predictive, diagnostic and optimization methods for cooling systems

Sample text

5: Thermodynamic properties of the refrigerant (water) at key points along the absorption refrigeration cycle. ) pressure (kPa) temp. (°C) specific enthalpy (kJ kg–1) specific entropy (kJ kg–1 K–1) LiBr mass fraction, X 1. 652 2. 652 3. 2438 – 4. 603 5. 603 6. 05 8 . 0 7. 0 8. 71 18 8 . 0 state point determine: (1) the ratio of solution mass flow rate at the absorber to refrigerant mass flow rate, commonly called the circulation flow rate ratio CR; (2) the chiller’s COP; and (3) the mass flow rate of saturated steam that must be supplied to the generator.

1: Thermodynamic properties for ammonia as required for the Carnot cycle s ta te p o int ( s e e F ig. 2 . 8 1. 077 –18 3 10 . 11: The T–S diagram for the Carnot cycle (subscript c, open squares) and for the real cycle (subscript r, solid triangles) of the ammonia–refrigerant machine considered here. compression; and (3) no pressure drops or related losses for the refrigerant. 11. 6 . 1 kJ kg –1. (b) The real cycle The actual irreversible cycle includes: (1) finite-size heat exchangers and hence finite-rate heat transfer losses; (2) non-isentropic expansion; (3) expansion via throttling; and (4) pressure losses incurred mainly in the single-phase flow region of the heat exchangers.

6: T–S diagram for the third possibility considered, wherein the cycle extends into the high-pressure liquid region. 4; and (2) the new additional isothermal compression branch d–d' requires an extra compressor and is difficult to realize with real equipment. 6. Its principal drawback is that point a becomes a very high pressure point (relative to the pressure at point d'), and renders the cycle impractical. 7. The four key steps are: (1) throttling in an expansion device (a–b) during which the refrigerant temperature falls below the temperature of the space to be cooled; (2) isobaric isothermal heat removal in the evaporator (b–c), with the refrigerant entering the evaporator as a low-quality saturated mixture and completely evaporates due to accepting heat from the refrigerated space; (3) isentropic compression (c–d) where saturated vapor is brought up to the condenser pressure and well above the temperature of the surrounding medium; and (4) isobaric heat rejection to the environment at the condenser (d–d'–a) of which branch d'–a is isothermal, with the refrigerant entering as superheated vapor and leaving as saturated liquid.

Download PDF sample

Cool thermodynamics : the engineering and physics of predictive, diagnostic and optimization methods for cooling systems by Jeffrey M. Gordon


by Richard
4.1

Rated 4.43 of 5 – based on 7 votes