engines heat pumps and refrigerators
Evaluation of heat pumps usage and energy savings in residential buildings
... intensity ratio of the heat pumps group) The energy intensity for homes with gas and homes with combination method of heating are 1.7 and 1.9 times the consumption of house with heat pumps Figure Number ... homes that have utilized and relied on heat pumps as their main heating source (test group) and homes that have relied on other heating alternatives such as gas, electricity and a combination of ... the conventional end-uses of heating, cooling and water heating [7] The present work focuses on determining the efficacy of using heat pumps as the main source of heating in eastern North Carolina...
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Heat transfer and friction factor characteristics using continuous M shape ribs turbulators at different orientation on absorber plate solar air heater
... the heat transfer between air and absorber plate get reduced The heat transfer between absorber plate and air can be enhanced either by increasing the heat transfer surface area using extended and ... the red marandi wood and 19 mm thick plywood panel The test section is of 1000 mm long and 14 mm in height The entry and exit section length were 250 mm and 125 mm respectively ASHRAE standard 97-77 ... Aharwal K.R, Gandhi B.K, Saini J.S Heat transfer and friction characteristics of solar air heater duct having integral inclined discrete ribs on absorber plate International Journal of Heat and Mass...
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An experimental investigation of heat transfer and fluid flow in a rectangular duct with inclined discrete ribs
... Performance of Solar air heater Proceedings of XVII National and VI ISHME/ASME Heat and Mass Transfer Conference, IGCAR, Kalpakkam India 2004; Jan 05-07 [2] Han J C Heat transfer and friction in channels ... on heat transfer and flow behavior in a rectangular rib roughened passage” International Journal of Heat and mass transfer; 123: 675-681, 2001 [6] Lau S.C., McMillin R.D and Han J.C Turbulent Heat ... B.V., Schabacker, J., and Boles, A., “Experimental and numerical study of developed flow and heat transfer in coolants with channels with 45 degree ribs”, Int Journal of Heat and fluid flow, 20,...
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The Thermodynamics, Heat Transfer, and Fluid Flow Fundamentals Handbook
... into an equivalent amount of heat and that heat could be converted into work EO 1.8 DEFINE the following: a Heat b Latent heat c Sensible heat d Units used to measure heat EO 1.9 DEFINE the following ... millimeters of mercury = 103 microns of mercury Page 13 HT-01 ENERGY, WORK, AND HEAT Thermodynamics ENERGY, WORK, AND HEAT Heat and work are the two ways in which energy can be transferred across the ... units of heat are often defined in terms of the changes in temperature it produces HT-01 Page 20 Rev Thermodynamics ENERGY, WORK, AND HEAT Another type of heat is called latent heat Latent heat is...
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Tài liệu PUMPS AND FANS pptx
... in fluid systems Tables and figures for pressure losses of water, steam, and air in pipe and duct systems are readily available from a number of references (See Figs 55.1 and 55.2.) 55.2.5 Systems ... application and is desirable for pump and fan selection and system analysis for constant flow applications The curve to be plotted is H versus Q, where H=[ET(3}-ET(2}]/g (55.3) Assume that V1 = O and ... (55.1) and (55.2), and letting V = Q/A, then Eq (55.3) reduces to Fig 55.1 Friction loss for water in commercial steel pipe (schedule 40) (Courtesy of American Society of Heating, Refrigerating and...
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doe fundamentals handbook - thermodynamics, heat transfer, and fluid flow - volume 1 of 3
... into an equivalent amount of heat and that heat could be converted into work EO 1.8 DEFINE the following: a Heat b Latent heat c Sensible heat d Units used to measure heat EO 1.9 DEFINE the following ... millimeters of mercury = 103 microns of mercury Page 13 HT-01 ENERGY, WORK, AND HEAT Thermodynamics ENERGY, WORK, AND HEAT Heat and work are the two ways in which energy can be transferred across the ... units of heat are often defined in terms of the changes in temperature it produces HT-01 Page 20 Rev Thermodynamics ENERGY, WORK, AND HEAT Another type of heat is called latent heat Latent heat is...
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doe fundamentals handbook - thermodynamics, heat transfer, and fluid flow - volume 2 of 3
... vii HEAT TRANSFER TERMINOLOGY Heat and Temperature Heat and Work Modes of Transferring Heat Heat Flux ... between heat and temperature 1.2 DESCRIBE the difference between heat and work 1.3 DESCRIBE the Second Law of Thermodynamics and how it relates to heat transfer 1.4 DESCRIBE the three modes of heat ... TERMINOLOGY HEAT TRANSFER TERMINOLOGY To understand and communicate in the thermal science field, certain terms and expressions must be learned in heat transfer EO 1.1 DESCRIBE the difference between heat...
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doe fundamentals handbook - thermodynamics, heat transfer, and fluid flow - volume 3 of 3
... VA 22161 Order No DE92019791 THERMODYNAMICS, HEAT TRANSFER, AND FLUID FLOW ABSTRACT The Thermodynamics, Heat Transfer, and Fluid Flow Fundamentals Handbook was developed to assist nuclear facility ... of heat transfer - conduction, convection, and radiation; and fluid flow, and the energy relationships in fluid systems This information will provide personnel with a foundation for understanding ... Thermodynamics, Heat Transfer, and Fluid Flow; Instrumentation and Control; Electrical Science; Material Science; Mechanical Science; Chemistry; Engineering Symbology, Prints, and Drawings; and Nuclear...
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Báo cáo khoa học: Multidrug efflux pumps: The structures of prokaryotic ATP-binding cassette transporter efflux pumps and implications for our understanding of eukaryotic P-glycoproteins and homologues ppt
... between TM helices and and between TM helices and provide noncovalent interactions with sites on the NBD These latter two linker regions, called intracellular loops and (ICL1 and ICL2) can both ... of cross-linking data and ligand docking, chiefly because of the NBD–TMD reverse domain order, the lack of conserved structural motifs ICD2 and ICD3, and shorter TMD helices and low sequence identity ... pair of motions to align the NBDs, thus forming the nucleotide sandwich dimer, and a concomitant retraction of TM1 and TM2 from TM3 and TM6, generating an outward facing configuration of the TMDs...
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boiling heat transfer and two-phase flow, second edition
... Distillation: Simulation, Optimal Design and Control FORTHCOMING TITLES Tong and Tang, Boiling Heat Transfer and Two-Phase Flow, Second Edition BOILING HEAT TRANSFER AND TWO-PHASE FLOW Second Edition ... around the heater is initiated and maintained by the nucleation, growth, departure, and collapse of bubbles, and by natural convection A thorough understanding of the process of boiling heat transfer ... boiling heat transfer and two-phase flow from which a consistent and thorough under standing may be formed To provide designers with formulas for predicting real or potential boiling heat transfer...
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handbook for heat exchangers and tube banks design
... the heating fluid, t1 and t2 are the inlet and outlet temperatures of the heated fluid in ◦ C, cpm and cpm are the mean isobaric specific heat of both the heating and the heated fluid in J/kgK, and ... is the heat transferred to the heated fluid in the time unit in W, M and M are the mass flow rates of the heating fluid and the heated fluid, respectively, in kg/s, t1 and t2 are the inlet and outlet ... that, β and ψ being equal, the value of χ c and thus of tm for types A and B (or A and D) with reference to Tables A.2, A.4, A.6 and A.8 is always lower than that for types C and D (or B and C)...
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audeltm pumps and hydraulics all new 6th edition
... Special-Service Pumps Service Pumps Chemical and Process Pumps 265 265 270 viii Contents Pumps for Medical Use Pumps for Handling of Sewage Other Special-Service Pumps Magma Pumps Sump Pumps Irrigation Pumps ... Rotary Pumps Principles of Operation 177 177 Gear-Type Pumps Vane-Type Pumps Piston-Type Pumps 177 180 187 Construction Gear-Type Pumps Vane-Type Pumps Piston-Type Pumps Installation and Operation ... –273◦ C (known as absolute zero), and there is no heat formed The two types of heat are sensible heat and latent heat Sensible Heat The effect of this form of heat is indicated by the sense of...
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fluid flow, heat transfer and boiling in micro-channels
... transient and turbulent single-phase flows; (2) heat transfer of liquids and gas flows; and (3) two-phase flows in adiabatic and heated micro-channels As indicated by Kandlikar and Grande (2002), and ... coolant and the cooled components The following sections discuss the two categories, represented by heat pipes and cold plates, and immersion cooling and jet impingement, respectively Heat pipes Heat ... substrate, package, and heat sink interface, Rconv with convection from the heat sink to the coolant, and Rheat with heating of the fluid as it absorbs the energy passing through the heat exchanger...
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molecular dynamics simulation of heat transfer and phase change during
... conditions, atoms are easier to expand in space when heated Therefore, more heat is stored in the form of potential energy and resulting in a larger specific heat The specific heat at constant volume is ... beam absorption Häkkinen and Landman [3] studied dynamics of superheating, melting, and annealing at the Cu surface induced by laser beam irradiation using the two-step heat transfer model developed ... the specific heat at constant pressure, the specific heat at constant volume, and the thermal conductivity are calculated and compared with published data To calculate the specific heat at constant...
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molecular dynamics simulation of heat transfer and phase change during
... conditions, atoms are easier to expand in space when heated Therefore, more heat is stored in the form of potential energy and resulting in a larger specific heat The specific heat at constant volume is ... beam absorption Häkkinen and Landman [3] studied dynamics of superheating, melting, and annealing at the Cu surface induced by laser beam irradiation using the two-step heat transfer model developed ... the specific heat at constant pressure, the specific heat at constant volume, and the thermal conductivity are calculated and compared with published data To calculate the specific heat at constant...
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molecular dynamics simulation of heat transfer and phase change during
... conditions, atoms are easier to expand in space when heated Therefore, more heat is stored in the form of potential energy and resulting in a larger specific heat The specific heat at constant volume is ... beam absorption Häkkinen and Landman [3] studied dynamics of superheating, melting, and annealing at the Cu surface induced by laser beam irradiation using the two-step heat transfer model developed ... the specific heat at constant pressure, the specific heat at constant volume, and the thermal conductivity are calculated and compared with published data To calculate the specific heat at constant...
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Heat Analysis and Thermodynamic Effects Part 1 ppt
... oxidation, and of heat pipe and exchanger to the international community It includes 17 advanced and revised contributions, and it covers mainly (1) thermodynamic effects and thermal stress, (2) heat ... Camargo and Maria Claudia Costa de Oliveira Chapter On the Thermal Transformer Performances Ali Fellah and Ammar Ben Brahim Part Heat Pipe and Exchanger 107 127 Chapter Optimal Shell and Tube Heat ... conversion, and transformer performances The second section covers thermosyphon heat pipe, shell and tube heat exchangers, heat transfer in bundles of transversly-finned tubes, fired heaters for...
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Heat Analysis and Thermodynamic Effects Part 2 doc
... features and expressions 2.2.1 SHAW, the simultaneous heat and water model The Simultaneous Heat and Water (SHAW) model is a one-dimensional soil and vegetation model that simulates the transfer of heat ... ground heat flux and sensible heat flux and to a minor extent for the difference in latent heat flux Within the nighttime hours it is advised to explore the difference in land surface temperature and ... as: 24 Heat Analysis and Thermodynamic Effects Rn K in K out Lin Lout (5) K in and K out are incoming and reflected short wave radiations respectively, Lin and Lout are absorbed and...
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Heat Analysis and Thermodynamic Effects Part 3 docx
... 52 Heat Analysis and Thermodynamic Effects The maximum bending stress, Szb,max and its generating location, βΔz, is shown in Fig.8 and Fig.9, respectively The maximum membrane stress, Shm,max and ... center of heated zone ( 0, ) and inside the body ( 0, 0.4 ) at s 0.6 (Yevtushenko et al., 2009) 62 Heat Analysis and Thermodynamic Effects Independently from the heat source ... -, Journal of NUCLEAR SCIENCE and TECHNOLOGY, Vol.47, No.9, pp 829- 838, ISSN:0022-3131 56 Heat Analysis and Thermodynamic Effects Katto, Y (1964), Conduction of Heat, (in Japanese), (1964), p.38,...
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Heat Analysis and Thermodynamic Effects Part 4 docx
... The heat source temperatures are constant, The heat sources are reservoirs with fixed heat capacities, The overall heat transfer coefficients Ui of the heat exchangers and between the cycle and ... (V x I) The heat sink transfers the heat like a steam cycle compressor system For both, heating or cooling, it is necessary to use a sink to collect heat (heating mode) or dissipate heat (cooling ... efficiency and the minimization of the total cost enclosing capital and running costs are the main purposes e.g Munoz and Von Spakovsky (2003) Physical and thermodynamic criteria and technical and economic...
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