• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
the temperature prediction in deepwater drilling
the temperature prediction in deepwater drilling

... ocean currents and induced eddies can pose significant problems for deep-water drilling. Broadly divided ocean currents, surface currents, bottom currents and vertical currents, interact with the deep water drilling structures as one of environmental forces. One of the engineering challenges in deep ...
The high temperature heat capacity and related thermodynamic
The high temperature heat capacity and related thermodynamic

... Follow this and additional works at: http://lib.dr.iastate.edu/rtd Part of the Physical Chemistry Commons ...
Keyhole mode laser welding of tantalum, Ti--6Al--4V
Keyhole mode laser welding of tantalum, Ti--6Al--4V

... a rigorous, yet computationally efficient, keyhole model is developed and tested on tantalum, Ti–6Al–4V, 304L stainless steel and vanadium. Unlike previous models, this one combines an existing model to calculate keyhole shape and size with numerical fluid flow and heat transfer calculations in the ...
Ch. 1
Ch. 1

... transfer. After all, we can determine the amount of heat transfer for any system undergoing any process using a thermodynamic analysis alone. The reason is that thermodynamics is concerned with the amount of heat transfer as a system undergoes a process from one equilibrium state to another, and it ...
Journal of Building Enclosure Design (JBED)
Journal of Building Enclosure Design (JBED)

... now considered to provide a “reasonable margin of safety against fungal damage” [3]. In other words, there is a built in safety factor of some unknown amount in that recommendation. Despite those requirements, builders have not always used dry wood. Traditionally, green wood has often been used but ...
REFRACTORY ENGINEERING STRUCTURES
REFRACTORY ENGINEERING STRUCTURES

... To design a lining, which will have the longest lifespan in regards to the economic budget of a given country. How to communicate with the teacher: At the beginning of the semester the teacher requires entering a semestral work project on metallurical plant lining design. The design procedure will b ...
The Study of Energy Efficiency by Central Atrium in Residential
The Study of Energy Efficiency by Central Atrium in Residential

... larger, inside and outside temperature is higher close. In atriums that their openings are at the top and at the bottom of it, the hot air exits from top and cool and heavy air enter through bottom. These opening are used better and more in summer and this matter makes stratification of inside air i ...
Crustal geotherm in southern Deccan Basalt
Crustal geotherm in southern Deccan Basalt

... (Mascarene Ridge located NE of Reunion island) and found a significantly higher heat flow of 6-8 mW m-2 than the reference heat flow predicted for the seafloor age. Therefore, in this study, we examine whether such an anomalous heat flow (although this is low) can be seen in the present-day crustal ...
GMTNIRS mechanical design - Giant Magellan Telescope
GMTNIRS mechanical design - Giant Magellan Telescope

... optical components during tracking of the telescope. Extensive mechanical simulation and optimization was utilized to arrive at synergistic designs of the optical bench, support structure, cryostat, and thermal isolation system. Additionally, detailed steady-state and transient thermal analyses were ...
Passivhaus primer: Designer`s guide A guide for the design team
Passivhaus primer: Designer`s guide A guide for the design team

... Triple glazing and doors In more temperate climates such as parts of Southern European it is possible to achieve the Passivhaus standard using good quality double glazing. In the UK however Passivhaus buildings must use triple glazed windows; there are two main reasons for this: 1 To reduce unwante ...
Three-dimensional analysis of heat transfer in a micro
Three-dimensional analysis of heat transfer in a micro

... material compatibility, high surface area per unit volume ratios, and large potential heat transfer performance, with highly sophisticated and economic fabrication processes. These advantages make these silicon based microchannel heat sinks extremely attractive for a wide variety of commercial appli ...
Modelling mass and heat transfer in a porous structure
Modelling mass and heat transfer in a porous structure

... significantly during the last three decades. These studies are of great importance as they can be used for a wide range of applications; typically for various sorts of clothing, insulation materials and drying of food products [1]. An understanding of the fundamental mechanisms inside a specific med ...
Energy Efficiency - International Code Council
Energy Efficiency - International Code Council

... f. Insulation levels for ceilings that have limited attic/rafter depth such as dormers, bay windows or similar architectural features totaling not more than 150 square feet (13.9 m2) in area may be reduced to not less than R-21. When reduced, the cavity shall be filled (except for required ventilati ...
МХ, англ.яз., Лопухова В.Н - Астраханский Государственный
МХ, англ.яз., Лопухова В.Н - Астраханский Государственный

... 4) Heat is removed from a low-temperature space or source and rejected to a high-temperature sink with the help of external work. 5) Heat is pumped from a lower temperature heat source into a higher temperature heat sink. 6) The most common types of refrigeration systems use the reverseRankine vapor ...
radiant cooling - Energy Design Resources
radiant cooling - Energy Design Resources

... detailed simulations of the same prototypical office building located in nine U.S. cities, comparing the performance of radiant cooling systems with ventilation and conventional “all-air” VAV systems. In comparisons with VAV systems, she found that on average, the radiant cooling systems save 30 per ...
Practical Power Cable Ampacity Analysis
Practical Power Cable Ampacity Analysis

... factors such as soil thermal resistivity, cable grouping and ambient temperature. As soon as initial design is made, it can be further tuned and verified by entering the program data interactively into the computer software or preparing the batch program. Information that will be used for cable curr ...
Seasonal thermal energy storage with heat pumps and low
Seasonal thermal energy storage with heat pumps and low

... energy consumption (47%) than transport (27%), electricity (17%) and non‐energy use (9%) [1]. Heating demand in residential buildings for domestic hot water (DHW) and space heating is responsible for almost 80% in northern parts of Europe [4] and Canada [5]. Due to increasing cost of electricity and ...
Description - COSMO model
Description - COSMO model

... Empirical constants and parameters of the proposed model are estimated, using independent empirical and numerical data. They should not be re-evaluated when the model is applied to a particular lake. The only lake-specific parameters are the lake depth, the optical characteristics of lake water, the ...
Metal foams as compact high performance heat
Metal foams as compact high performance heat

... foams, the numerical models have had limited success, and the experimentation to verify these models is restricted, particularly to the coolant, which is typically air. In cooling electronics which generate a large amount of excess heat, a liquid coolant is generally preferred over air because of th ...
Forced-Circulation Air-Cooling and Air-Heating Coils
Forced-Circulation Air-Cooling and Air-Heating Coils

... either cold water, cold aqueous ethylene glycol or aqueous propylene glycol solutions, or volatile refrigerant is circulated, for the purpose of total cooling (sensible cooling plus latent cooling) of a forced-circulation air stream. ...
Influence of the Type of Phase Change Materials Microcapsules on
Influence of the Type of Phase Change Materials Microcapsules on

... store and release of energy, keeping the interior temperature sensibly constant, or at least with less variation. The environmental aspect concerns the fossil fuels depletion, given that this technology aims at maintaining constant temperatures inside the building, consequently leading to a decrease ...
Thermal Properties of Framework Materials: Selected Zeoiites
Thermal Properties of Framework Materials: Selected Zeoiites

... conductivity and the Grüneisen parameter are fundamental characteristics of rnaterials. They provide important information such as thermodynamic stability, anharmonicity of lattice vibrations, interatomic interactions and the utility of materials for various applications. The thesis is concerned wit ...
Document Title - Republic-Med
Document Title - Republic-Med

... The building sector in the Europen Union is considered as the largest consumer of energy using up to 40% of the final energy consumption1. To evaluate the energy performance of both residential and tertiary buildings, many parameters are required, such as the thermo-physical properties of the envelo ...
book - University of Guelph Physics
book - University of Guelph Physics

... The existence of the relation g(P, V ) = θ for isotherms, inferred empirically above, can also be justified by rigourous mathematics. We will now go through this argument. This will serve to illustrate a major theme of thermodynamics: Simple physical ideas (such as the zeroth law) can go very far wh ...
Apparent Latent Heat of Evaporation from Clothing
Apparent Latent Heat of Evaporation from Clothing

... a cool environment, the heat balance determined in the standard manner did not add up, producing unrealistically high values for dry heat loss. They suggested that in that condition the evaporative cooling of the human body when calculated from clothed mass loss may be underestimated. Furthermore it ...
< 1 2 3 4 5 6 7 ... 45 >

Thermal comfort

Thermal comfort is the condition of mind that expresses satisfaction with the thermal environment and is assessed by subjective evaluation (ANSI/ASHRAE Standard 55). Maintaining this standard of thermal comfort for occupants of buildings or other enclosures is one of the important goals of HVAC (heating, ventilation, and air conditioning) design engineers.Thermal neutrality is maintained when the heat generated by human metabolism is allowed to dissipate, thus maintaining thermal equilibrium with the surroundings. The main factors that influence thermal comfort are those that determine heat gain and loss, namely metabolic rate, clothing insulation, air temperature, mean radiant temperature, air speed and relative humidity. Psychological parameters such as individual expectations also affect thermal comfort.The Predicted Mean Vote (PMV) model stands among the most recognized thermal comfort models. It was developed using principles of heat balance and experimental data collected in a controlled climate chamber under steady state conditions. The adaptive model, on the other hand, was developed based on hundreds of field studies with the idea that occupants dynamically interact with their environment. Occupants control their thermal environment by means of clothing, operable windows, fans, personal heaters, and sun shades.The PMV model can be applied to air conditioned buildings, while the adaptive model can be generally applied only to buildings where no mechanical systems have been installed. There is no consensus about which comfort model should be applied for buildings that are partially air conditioned spatially or temporally.Thermal comfort calculations according to ANSI/ASHRAE Standard 55 can be freely performed with the CBE Thermal Comfort Tool for ASHRAE 55.Similar to ASHRAE Standard 55 there are other comfort standards like EN 15251 and the ISO 7730 standard.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report