• 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
FIREWALKING
FIREWALKING

... • Firewalking has been practiced for thousands of years by people from all parts of the world. It is observed as an organized event in many different cultures and religions. It is by some, thought to be a paranormal phenomena accomplished only by those of high spiritual faith or of those who claim t ...
NOTES-Chapter 12
NOTES-Chapter 12

... NOTES-Chapter 12 Thermal Energy ...
Heat and Temperature
Heat and Temperature

... work turning the rotor blades. Heat Power ...
heated bar method
heated bar method

... 1. conduction through the solid sample 2. convection from the surface to the surroundings The temperature profile of the sample is measured by attaching eight thermocouples on the top surface at regular intervals. Two thermocouples are also attached to the aluminum blocks to measure the base tempera ...
Document
Document

... Enumerate some important areas which are covered under the discipline of heat transfer ...
Some Physicochemical Properties of Yb MnSb and Its Solid Solutions with Gadolinium Yb
Some Physicochemical Properties of Yb MnSb and Its Solid Solutions with Gadolinium Yb

... heating, all variations with the sample were fixed and related to appropriating peaks on the heating curve. Second procedure was step-by-step heating with examination what happens with the sample being heated to a given temperature. Three temperatures were taken: up to 1500°C, then 1750°C and at las ...
Unit 7 Study Guide Answer Key
Unit 7 Study Guide Answer Key

... 18. What are some common types of heating systems? Forced-air systems, radiator systems, solar heating systems 19. What are the first and second laws of thermodynamics? 1st Law – to increase temperature of a system, heat must be added or work must be done 2nd Law – energy spreads from high concentra ...
15.1,2
15.1,2

... C H A P T E R 15 Thermodynamics Thermodynamics is the branch of physics that is built upon the fundamental laws that heat and work obey. ...
Unit 3 Homework
Unit 3 Homework

... κ = cv vΛ d where d is the dimension and can take the values 1, 2 or 3. Also obtain an integral expression for the thermal conductivity and observe the temperature dependence at low temperatures. Assume that the velocity and mean free path are independent of temperature and carrier energy. 4. Specif ...
Lab-Temp., Heat, and Thermal Energy
Lab-Temp., Heat, and Thermal Energy

... 5. Which sample of metal had more thermal energy when it was in the hot water at the start of the experiment? Support your answer to this question with data and observations from your lab. ____________________________________________________________________________________ __________________________ ...
Consider a rigid tank with a movable piston
Consider a rigid tank with a movable piston

... Air-Standard Assumptions: 1) The working fluid is air, which continuously circulates in a closed loop and always behaves as an ideal gas. 2) All the processes that make up the cycle are internally reversible. 3) The combustion process is replaced by a heat-addition process from an external source. 4 ...
Full PDF
Full PDF

... Reproduction in farm animals is highly affected by environmental factors and when environmental conditions are favorable, reproductive activity expresses its full potential. Favourable conditions must include adequate photoperiod, thermo-neutral conditions, food availability in quantity and quality ...
Kotze_J - Energy Postgraduate Conference 2013
Kotze_J - Energy Postgraduate Conference 2013

... Test section cooling loop Ball Valve ...
Temperature Conversions
Temperature Conversions

... 4. A 400g glass coffee cup is at room temperature, 20.0ºC. It is then plunged into hot dishwater, 80.0ºC. If the temperature of the cup reaches that of the dishwater, how much heat does the cup absorb? Assume the mass of the dishwater is large enough so its temperature doesn’t change appreciably. ...
introduction - IIT Portal.com
introduction - IIT Portal.com

... Its knowledge should also be imported for efficient working of various machines. Calorimetry and Thermas Expansion:Calorimetry:Heat:It is a form of energy which determines the change in thermas state of a body. Heat flows from a body which has a higher temp. to the body which has lower temp. Specifi ...
Thermal Management of High Power in Small Spaces
Thermal Management of High Power in Small Spaces

... Heatsink and TIM manufacturers have risen to the challenge of providing highly capable designs and materials to meet the increased power dissipation in modern electronics devices. We now see in the industry heat sink forms that are no longer just simple extrusions. Folded fin, low flow bypass and ac ...
Discovery Education Science Connection
Discovery Education Science Connection

... Evaporative cooling is when wind causes moisture on the skin to turn into vapor, taking heat away from the body in the process. Standing in direct sunlight can make the heat index increase by 15° F. On a particular day, the heat index may be 95° F. The temperature will feel much hotter to a person w ...
The physiological equivalent temperature – a universal - FAU
The physiological equivalent temperature – a universal - FAU

... temperature (Yaglou 1927). It can be used for the assessment of both hot and cold conditions and therefore all year round. People can therefore become familiar with such an index more easily than if different methods are used, as occurs in Canada where wind-chill temperatures are used in winter-time ...
Density of Thermal Insulating Materials Kg/m3 K
Density of Thermal Insulating Materials Kg/m3 K

... smaller the decrement factor the more comfortable living inside the house will be. See figure 5 a for details about thermal comfort and its relationship with the ambient internal temperature and the average temperature of the internal surfaces. It must be noted that a difference of more than 3ْ c be ...
Chapters 1 and 2
Chapters 1 and 2

... Temperature is a measure of the tendency of an object to spontaneously give up/absorb energy to/from its surroundings. Diathermal wall is a system boundary that freely allows heat to be exchanged, i.e. very short relaxation time for systems separated by a diathermal wall. Adiabatic wall is a system ...
Sustainable Recommendations for the Faculty of technology of the
Sustainable Recommendations for the Faculty of technology of the

... narrow windows with azimuth of 200° that prejudice even more the entrance of natural light. The shape of the openings doesn’t contribute to a uniform and efficient distribution of the natural light, once they are located only in one end of the room. This ends up bringing direct sunlight into the roo ...
Aalborg Universitet Heiselberg, Per Kvols
Aalborg Universitet Heiselberg, Per Kvols

... thermal discomfort in occupants, given current standards. A simple thermal model is useful for model predictive control (MPC), by predicting how much heat can be removed at night. For this, it is essential to be able to localize forecast data, which can then be input into the model. The simulation r ...
8.3 Temperature and Heat Heat Transfer Heat Flow
8.3 Temperature and Heat Heat Transfer Heat Flow

... σ= Stephan-Boltzmann constant =5.67x10-8 W/m2•K4 e = emissivity a parameter with values from 0-1 e=1 is a perfect emitter and perfect absorber of radiation ideal “black body”. e=0 does not emit or absorb radiation. ...
Chapters 12-15 Thermodynamics
Chapters 12-15 Thermodynamics

... • The volume of ice decreases (it melts) and the pressure and volume of the balloon decrease • They come to a final state of thermal equilibrium which must be characterized by a new physical property called temperature T • In thermal equilibrium: Tice = Tballoon 3 ...
Read-Around therm = heat, temperature
Read-Around therm = heat, temperature

... names the device in a home or classroom that helps you adjust the temperature so that it is not too hot or too cold ? ...
< 1 ... 37 38 39 40 41 42 43 44 >

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