heat engines refrigerators and heat pumps
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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MÔ HìNH HOá QUá TRìNH TRAO ĐổI NHIệT ẩM TRONG MáY ấP TRứNG GIA CầM Modeling of heat and mass transfer in chicken egg incubators
... Mathematical Simulation of Mass and Heat Transfer in High Moisture Foods, Trans ASAE, pp 55-59 224 Husain A., Chen C.S., Clayton J T (1973), Simultaneuos Heat and Mass Diffusion in Biological ... V (1980), Heat and mass transfer, Mir Publisher, Moscow Peebles E D, Christopher D McDaniel (2004), A Practical Manual for Understanding the Shell Structure of Broiler Hatching Eggs and Measurement ... Solar drying systems: Simulations and optimization, Agrotech Publishing Academy, Udaipur, pp 131-133 Haghighi K., Segerlind L.J, (1988), Modeling Simultaneous Heat and Mass Transfer in Isotropic...
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Effect of periodic suction on three dimensional flow and heat transfer past a vertical porous plate embedded in a porous medium
... A., Das J K., Panda J P Mass transfer effects on MHD flow and heat transfer past a vertical porous plate through a porous medium under oscillatory suction and heat source Int J Heat Mass Transfer ... -6.4648 4.4 Rate of heat transfer The rate of heat transfer at the wall i.e the heat flux in terms of Nusselt number Nu for different values of α and Kp are entered in Table The heat flux at the ... the velocity and temperature of the flow field are solved employing perturbation technique and the effects of the flow parameters on the velocity and temperature of the flow field and also on...
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Exergoeconomic performance optimization of an endoreversible intercooled regenerated Brayton cogeneration plant Part 2: Heat conductance allocation and pressure ratio optimization
... U T , (uh )Π and π Π max, increase, and (ul )Π max, and (uk )Π max, max, decreases, (ui )Π max, decrease first and then increase Figures7 and show the characteristics of Π max, and (ηex )Π max, ... allocations of the hot-, cold- and consumer-side heat exchangers, the intercooler and the regenerator for a fixed total heat exchanger conductance, the optimal heat conductance allocation of ... rate to exergy input rate heat capacity rate ( kW / K ) ratio of the specific heats temperature ( K ) heat conductance ( kW / K ) hot-side heat conductance allocation heat conductance allocation...
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Exergoeconomic performance optimization of an endoreversible intercooled regenerative Brayton combined heat and power plant coupled to variable-temperature heat reservoirs
... regenerator and the intercooler are counter-flow and the heat conductances (heat transfer surface area and heat transfer coefficient product) of the hot-, cold- and consumer-side heat exchangers, ... rate and specific heat product) Cwf The hot-side heat reservoir is considered to have a thermal capacity rate CH and the inlet and the outlet temperatures of the heating fluid are THin and THout ... CHP plant with heat resistance and internal irreversibility [27] and an irreversible Dual cycle CHP plant with heat resistance, heat leakage and internal irreversibility [28], and compared the...
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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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Natural convection unsteady magnetohydrodynamic mass transfer flow past an infinite vertical porous plate in presence of suction and heat sink
... Energy and Environment (IJEE), Volume 3, Issue 2, 2012, pp.209-222 220 4.4 Skin friction and rate of heat transfer Variations in the values of skin friction τ and the heat flux i e rate of heat ... the velocity of the flow field Curves with S0 correspond to the presence of heat sink and heat source respectively in the flow field The heat source parameter (S>0) is found to accelerate ... plate in presence of constant suction and heat sink and a transverse magnetic field B0 The x′-axis is taken in vertically upward direction along the plate and the y′axis is chosen normal to it...
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Hamilton–Jacobi–Bellman equations and dynamic programming for power-optimization of radiative law multistage heat engine system
... endoreversible Carnot heat engine with stationary heat reservoirs Let the heat flux rates absorbed and released by the working fluid in the heat engine be q1 and q2 , respectively T1 and T2 are the ... endoreversible Carnot heat engines [36] 4.2 For Stefan-Boltzmann heat transfer law When n = , i.e the heat transfer between the working fluid and the heat reservoir obeys StefanBoltzmann heat transfer ... corresponding to high- and lowtemperature sides, which is related to Stefan-Boltzmann constant and heat transfer surface area If the differences between T1 and T1' as well as T2' and T2 are small,...
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Energy and exergy analysis of particle dispersed latent heat storage system
... temperature and interface location at any instant can be easily obtained by integrating equations (5) and (6) with respect to X and Fo respectively and subsequent application of the initial and boundary ... 10 and Figure 11 The increase in Stefan number indicates more sensible heat contribution over the latent heat stored in the unit due the higher HTF inlet temperature and thus more energy and ... 907-919 [17] Trp A An experimental and numerical investigation of heat transfer during technical grade paraffin melting and solidification in a shell and tube latent heat thermal energy storage unit...
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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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Hydromagnetic convective flow past a vertical porous plate through a porous medium with suction and heat source
... suction and heat flux and transverse magnetic field Let the x′-axis be taken in vertically upward direction along the plate and y′-axis normal to it Neglecting the induced magnetic field and the ... specific heat at constant pressure, Pr is the Prandtl number, Gr is the Grashof number for heat transfer, S is the heat source parameter, Kp is the permeability parameter, Ec is the Eckert number and ... heat source parameter S reverses the effect A growing Prandtl number Pr or magnetic parameter M increases the magnitude of the rate of heat transfer at the wall On the other hand, a growing heat...
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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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Thiết bị trao đổi nhiệt ống chùm (Shell and tube heat exchangers)
... - APPLIED PROCESS DESIGN FOR CHEMICAL AND PETROCHEMICAL PLANTS (Volume 3, Third Edition), Gulf Professional Publishing T.Kuppan – Heat exchanger design handbook, Marcei Dekker INC Nhiều tác giả ... tham khảo: http://en.wikipedia.org/ http://www.gc3.com/ http://www.heatexchangersonline.com/ Phần mềm tham khảo: Shell and Tube Heat Exchanger Design 1.5.2 ...
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Tài liệu Báo cáo khoa học: The heat shock factor family and adaptation to proteotoxic stress pdf
... of sensory and ciliated tissues, and in immune responses [12–14] HSF1- and HSF3-mediated mechanisms of cellular adaptation to heat shock have been analyzed in detail in chicken cells, and were ... HSF3 Expression of classical heat shock genes induced by two heat- responsive HSFs After the identification of mammalian HSF1 and HSF2 [20–22], and of chicken HSF1, HSF2 and HSF3 [23], research was ... sublethal heat shock can survive lethal heat shock This phenomenon is called induced thermotolerance, and is regulated by mouse HSF1 and chicken HSF3 through the activation of the heat shock...
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Tài liệu Báo cáo khoa học: Novel aspects of heat shock factors: DNA recognition, chromatin modulation and gene expression ppt
... Sakurai and Y Enoki SWI ⁄ SNF complexes are recruited to both the promoter and coding regions, and histones are acetylated and displaced [56–58] However, the presence of SAGA and SWI ⁄ SNF, and a ... achieved by HSF1 and the histone deacetylases HDAC1 and HDAC2 [77] In heatshocked cells, HSF1 binds to HDAC1 and HDAC2, and their histone-deacetylase activities increase The heat- induced deacetylation ... acetylase and deacetylase modulate chromatin structure and fine-tune transcription [58] The histone chaperones Asf1, Spt6 and Spt16 are involved in histone eviction and redeposition, and inactivation...
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Tài liệu Báo cáo khoa học: Roles of heat shock factors in gametogenesis and development pptx
... FEBS R Abane and V Mezger 113 Trinklein ND, Chen WC, Kingston RE & Myers RM (2004) Transcriptional regulation and binding of heat shock factor and heat shock factor to 32 human heat shock genes ... maternal Heat Shock Factor results in multiple cellular and developmental defects, including mitochondrial damage and altered redox homeostasis, and leads to reduced survival of mammalian oocytes and ... Journal compilation ª 2010 FEBS R Abane and V Mezger in mammals, the crystallins are aA and aB; bB1, bB2, bB3, bA3 ⁄ A1 and bA4; and cA, cB, cC, cD, cE, cF and cS In mice, the c-crystallins are...
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Tài liệu Báo cáo khóa học: Cloning and characterization of two distinct isoforms of rainbow trout heat shock factor 1 ppt
... amplification cycles of 0.5 at 94 °C, 0.5 at 50 °C and 0.5 at 72 °C, and one termination cycle of at 72 °C, with 35 cycles in total for HSF1a and HSF1b and 30 for heat shock cognate 70 (HSC70) Rainbow trout ... We observed gel shift bands in the lanes containing epitopetagged HSF1 (Fig 6B, lanes and 8) The bands were detected at a position corresponding to the gel-shift band of heat- shocked RTG-2 cell ... trout HSF1a and HSF1b (78.8% identity; Fig 3B) Ó FEBS 2004 708 N Ojima and M Yamashita (Eur J Biochem 271) Fig RT-PCR analysis of the HSF1a and HSF1b genes in rainbow trout RTG-2 cells and tissues...
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Tài liệu Báo cáo khoa học: The small heat shock proteins and their role in human disease pptx
... hypoxia, heat and oxidation, and in relation to pathological status sHSPs interact with many essential cell structures and it follows from such promiscuity that functional disruption and inappropriate ... 2613–2627 ª 2005 FEBS Small heat shock proteins and disease up-regulated in Alzheimer’s brains and localizing to astrocytes and degenerating neurons [104–109], interact with Ab and occur in amyloid ... potential and decrease cell protection by Hsp25 In another example, Hsp27 and aB-crystallin appear in Parkinson’s disease 2617 Small heat shock proteins and disease with severe dementia [119] sHSPs and...
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Báo cáo khoa học: Binding affinities and interactions among different heat shock element types and heat shock factors in rice (Oryza sativa L.) ppt
... min, and subjected to SDS ⁄ PAGE electrophoresis and phosphor-imaging Positions of monomers are indicated by white circles, and lower and higher levels of homotrimers are indicated by gray and ... (synthetically defined tryptophan and histidine dropout medium) and SD-WH + mM 3-AT and WH + mM 3-AT (synthetically defined tryptophan and histidine dropout media with and mM of 3-AT) The lane with ... substrate and by filter lift assay (Yeast Protocols Handbook; Clontech Laboratories Inc., Mountain View, CA, USA) Each experiment was repeated three times Heat shock element types and heat shock...
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