thermal properties of water and steam

...  adopted energy­conservation building codes and standards that apply to the design and construction of buildings. Thedesign of energy­conserving buildings now requires an expanded understanding of the thermal properties ofthe building envelope and the materials that comprise the envelope system ... This guide reports data on the thermal properties of concrete and masonry constituents, masonry units, and systems of materials and products that form building components. This guide includes consideration of thermal  ... In addition to structural requirements, a building envelope should be designed to control the flow of air;,heat;, sunlight;, radiant energy;, and liquid water and water vapor, and to limit the entry of rain and snow. Itshould also provide the many other attributes generally associated with enclosure materials, including fireprotection,and ...

Ngày tải lên: 18/10/2022, 20:34

... Research and Information AssociationChartered Institution of Building Services EngineersDepartment of Energy (Energy Efficiency Office)Department of Energy (Gas Standards) Department of the Environment ... drafting of the standard, through sub-committees and panels: Association of Consulting EngineersBritish Paper and Board Industry Federation (PIF)Institution of Chemical Engineers Institution of Mechanical ... be used and the data that should be collected in order to obtain an assessment of the thermal performance of steam, hot water or high temperature heat transfer fluid boilers, generally of output...

Ngày tải lên: 28/09/2014, 23:11

... consisted of the measurement of thermal conductance of two different typologies of building wall: a wall in blocks of calcarenite sandstone assembled with mortar, typical of the constructions of "Sassi ... Polytechnic of Bari, were performed on some samples of calcarenite sandstone and calcareous stone of Fasano The goal of the laboratory tests was to experimentally find the thermophysical properties of ... average and black-box methods, the thermal conductance of the wall With this particular type of construction of the monitored walls, it is not possible to use other methods of determination of thermal...

Ngày tải lên: 05/09/2013, 14:58

... chemical stability, thermal conductivity and mechanical properties [2] Due to their exceptionally high aspect ratio and mechanical properties, incorporation of small amounts of CNTs into a polymer ... MWCNT in case of former and with 5 wt% in case of the latter Electrical Properties One unique property of the MWCNTs is their electrical conductivity because of their large aspect ratio and mobile ... of water molecules The whole scheme of nanocomposites fabrication is illustrated in Fig.2 Characterization Fourier Transform Infrared Spectroscopy Functionalization of MWCNTs and conversion of...

Ngày tải lên: 22/06/2014, 01:20

... clays etc are often added to polymer Particulate fillers modify physical and mechanical properties of polymers in many ways Use of carbon black for improving reinforcement properties of an elastomer ... prevulcanization Trang 3and ‘c’ is the amount (phr) of prevulcanized SBR gel addedinto the NR latex Characterization of Gelled Latex Samples and Measurements of Various Properties of Gel Filled Rubbers ... experiments), and calculated from the weight of the samples before and after swelling as follows: where W1is the initial weight of the polymer and W2,the weight of the insoluble portion of the polymer...

Ngày tải lên: 22/06/2014, 01:20

... affect the mechanical, thermal, and water absorbent properties of the composite In addition, the properties of the composite will be unlike those of the pure polyethylene because of variations in the ... 1Effect of Treated and Untreated Filler Loading on the Mechanical, Morphological, and Water Absorption Properties of Water Hyacinth Fibers- Low Density Polyethylene Composites Supri A G and B ... with the addition of coupling agents The mechanical, morphological, and water absorbent properties of the treated and untreated fiber composites are studied 2.1 Materials Water hyacinth fibers...

Ngày tải lên: 07/08/2014, 14:20

... Chapter 3 T HERMAL PROPERTIES OF CELLULOSE AND ITS DERIVATIVES 1. Introduction 39 2. Thermal Properties of Cellulose in Dry State 42 6. Thermal Decomposition of Cellulose and Related Compounds ... THERMAL PROPERTIES OF GREEN POLYMERS AND BIOCOMPOSITES Hot Topics in Thermal Analysis and Calorimetry Volume 4 Series Editor: Judit Simon, Budapest University of Technology and Economics, ... Cellulose-Water Interaction 56 4. Liquid Crystals and Complexes 84 108 5. Hydrogels 3. Raw Materials for Synthetic Green Polymers: Molasses and Lignin 7 Thermal Properties of Green Polymers and...

Ngày tải lên: 11/08/2014, 06:20

... and the structure of water vary as a Thermal Properties of Cellulose and Its Derivatives 65 function of Wc, Cp water and Cp cellulose changes as a function of Wc Accordingly, ... observed Thermal Properties of Cellulose and Its Derivatives 67 Figure 3-34 (A) Relationship between free water content (Wf), freezing bound water content (Wfb) and water content (Wc) of ... natural and regenerated cellulose (B) Relationship between non-freezing water content (Wnf) and Wc of natural and regenerated... size and mass of sample and flow rate of atmospheric...

Ngày tải lên: 11/08/2014, 06:20

... representative curves of relative baseline optical density of OH stretching band of various types of lignin as a function of temperature The relative optical density of OH stretching band starts to decrease ... density of representative OH stretching band (hydrogen bonded) and temperature of various kinds of lignin I: KL (3400 cm-1, 3500 cm-1), LS (3380 cm-1, 3500 cm-1), DL (3380 cm-1, 3500 cm-1) and ... bands of the aromatic skeletal vibration decreased at a temperature higher than that of OH stretching Table 5-1 shows the inflection point of relative optical density curves of various types of...

Ngày tải lên: 11/08/2014, 06:20

... Tg and Tm of KLPCL and those of ALPCL 100 H /Jg -1 80 60 40 20 0 -20 0 10 20 30 -1 CL/OH Ratio / mol mol Figure 6-39 Change of ∆H's of Tcc and Tm with CL/OH ratio in AL- and ... of H's of cold crystallization and melting with CL/OH ratio in AL- and KLPCL Enthalpy of cold crystallization did not... Cellulose and Lignin 247 8 Hatakeyama, H., Yoshida T and ... corresponds to the molecular motion of amorphous chains of CAPCL. When the crystalline region is formed, it restricts the incoherent movement of random chains and the number of molecular chains involving...

Ngày tải lên: 11/08/2014, 06:20

... the thermal degradation of MLP and DTd2 corresponds to the thermal degradation of PPG Figure 7-24 shows the change of Td1 and Td2 with increasing MLP content The presence of two kinds of thermal ... number of moles of isocyanate groups per gram of MDI, WMDI the weight of MDI, MLig the number of moles of hydroxyl groups per gram of lignin, WLig the weight of lignin, MPEG the number of moles of ... of MLP, DTd2 corresponds to the thermal degradation of PEP and DTd3 corresponds to the thermal degradation of PPG As shown in Figure 7-26, the presence of three kinds of DTd is clearly seen and...

Ngày tải lên: 11/08/2014, 06:20

... lignosulfonate (LS) and molasses (ML) are described Preparation of geocomposites which are prepared by the reaction of PU-based geostabilizers in sand and the mechanical and thermal properties of the above ... amount of water was excluded from the sand using a corking hand gun In this stage, the mass of sand increases ca 16 %, (4) the surface of the sand is flattened, (5) a pre-determined amount of PEG ... shows TG and DTG curves of PU composites prepared from CG As seen from Figures 8-14 and 8-15, TG and DTG curves show the presence of three kinds of thermal degradations corresponding to T T and Trang...

Ngày tải lên: 11/08/2014, 06:20

... and (b)] and x= 0.5 [(c) and (d)] and x= 0.6 [(e) and (f)] compounds .106Figure 3.23: Temperature dependence of′ and ′′ at f = 100 kHz [(a) and (b)] and f = 1 MHz [(c) and (d)] under0 H = 0-5 ... [(a) and (b)] and x= 0.2 [(c) and (d)] compounds .105 Figure 3.22: Temperature dependence of ’and ’’ under zero field for selected frequencies (f = 0.1-5 MHz) for x= 0.4 [(a) and (b)] and x= ... Magnetocaloric effect and magnetothermopower in Sm 0.7-xLaxSr0.3MnO3 196 6.1.2 Electrical, magnetic and magnetothermal properties of La0.7-xPrxCa0.3MnO3 198 6.1.3 Electrical and thermal transport...

Ngày tải lên: 10/09/2015, 09:11

... evaluation of the Dirac energy position and the size of the band gap Concurrent with the band structure shift, the size of the band-gap increases The band fitting retrieves the energy of the bottom of ... structural and chemical information reported so far are of pivotal importance to understand and give a microscopic explanation of the transport and gas sensing properties of GO Electrical Response of ... Castro, Dieter Merkle, and Petra Jantzen of Springer Of ce for their helpful assistance during the preparation of this special volume The Editors and Chairs of GraphITA Vittorio Morandi Luca Ottaviano...

Ngày tải lên: 24/03/2014, 01:20

... the proteolytic processing of the proforms of the SVMPs occurs in advance of release of mature secretory vesicle contents into the lumen of the venom gland In the case of the SVMPs, activation ... Interaction of the cysteine-rich domain of snake venom metalloproteinases with the A1 domain of von Willebrand factor promotes site-specific proteolysis of von Willebrand factor and inhibition of von ... better understanding of venom action and possibly therapeutic intervention 13 References Takahashi T & Osaka A (1970) Purification and some properties of two hemorrhagic principles (HR2a and HR2b)...

Ngày tải lên: 18/02/2014, 18:20

... Isolation and purification of the scrambled disulfide isomers of HPI In the presence of denaturant and thiol catalyst as indicated above, HPI was converted into the mixture of native and scrambled ... role of C-peptide in the folding/unfolding of HPI (Eur J Biochem 271) 1739 difference between PIP and HPI in the refolding pathway However, our studies of the oxidized refolding process of PIP and ... (preproinsulin) and folded as proinsulin, in which a connecting peptide of 35 residues links the C terminus of the B chain and N terminus of the A chain After digestion by a specific set of protein...

Ngày tải lên: 19/02/2014, 12:20

... Comparisons of the thermodynamics and kinetics of the folding of proteins from mesophilic and thermophilic ⁄ hyperthermophilic organisms can provide an insight into the mechanisms of stabilization ... [15] Analysis of a structural model of AmFd suggests that a combination of additional surface ion pairs, the zinc cofactor, and an efficiently packed core govern the high stability of this protein ... TmCsp, however, has significantly greater thermal and chemical stability (TM of 85 °C, pH 7; DGU of 26 kJÆmol)1, pH 7, 20 °C) than BsCsp (TM of 50 °C, pH 7; DGU of 11 kJÆmol)1, pH 7, 20 °C) [44] This...

Ngày tải lên: 07/03/2014, 05:20

... helix formation of collagen [70] and the maturation of transferrin [71], and CypB binds and affects HIV Gag and the HIV capsid protein p24 [72,73] Although complexes between PPIases and other folding ... transduction, which consists of two noncovalently assembled dimers, de and ce, and a covalently bound dimer of f chains [250] (Fig 6B) Synthesis of the f chain is only 10% of that of the other subunits ... rearrangement of intramolecular disulfide bonds [85] or by cycles of substrate reduction and subsequent oxidation [86] The active sites of most PDI family members consist of a CGHC motif The central and...

Ngày tải lên: 07/03/2014, 06:20

... stabilization of mitochondrial DNA [4] In mammalian cells, two aconitase paralogs are present in the cytosol: iron regulatory proteins and (IRP1 and IRP2) IRP1 and IRP2 are important regulators of cellular ... staining (Fig 5C) Most of the bands in Fig 5A, lane 11 (fraction 10) were still present (Fig 5C, lane 1), but addition of 1% Triton X-100 to the buffer eliminated many of the protein bands (Fig 5C, lane ... mitochondria and the other one is unknown The protein bands separated from purified aggregates on SDS ⁄ PAGE were cut and identified using MS The results indicated the presence of hIRP1, as expected, in band...

Ngày tải lên: 07/03/2014, 10:20