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Energy and Exergy Analysis of Organic Rankine
Energy and Exergy Analysis of Organic Rankine

... Heat is recovered by organic Rankine cycles (ORC).Low grade heat is useful for operation of Organic Rankine cycle the Low grade heat is available from various heat sources such as solar ,ocean , thermal , geothermal, biomass, and available source of heat from engine exhaust or industrial process was ...
Second Progress Report.pdf
Second Progress Report.pdf

... generation due to a temperature difference between two junctions of a thermoelectric device as defined by the Peltier-Seebeck effect. Thermoelectric devices have been used for temperature regulation by operating as a heat pump to maintain computing devices and integrated circuits at optimum temperat ...
1 Pump Characteristic Based Optimization of a Direct Water Cooling
1 Pump Characteristic Based Optimization of a Direct Water Cooling

... advanced mini-channel scheme under on the following conditions: • Both cooling schemes are driven by pumps of equal characteristics. This definition is an important side condition for the considerations in this paper. • Both cooling schemes are limited to the same overall dimensions. • Both schemes ...
Word Document
Word Document

... Starting in 1965, IBM and other manufacturers of mainframe computers sponsored intensive research into the physics of cooling densely-packed integrated circuits. Many air and liquid cooling systems were devised and investigated, using methods such as natural and forced convection, direct air impinge ...
Final Draft_v2.pdf
Final Draft_v2.pdf

... Several investigations and studies have been completed concerning the subject of materials for TE devices and recovering waste heat as a green energy source. Thermoelectric technology is used in countless applications to power small electronics, or harness enough energy from large heat producing sou ...
Institutionen för systemteknik Department of Electrical Engineering Camera Chip
Institutionen för systemteknik Department of Electrical Engineering Camera Chip

... Besides being used in dark environment, the physical properties of infrared light makes it very suitable in other applications as well. Light in the infrared spectrum has wavelengths more than ten times as long as the wavelengths of visible light. The longer wavelength means infrared passes through ...
Fundamentals of Thermal Sensors
Fundamentals of Thermal Sensors

... Three-Dimensional Conduction: Conduction can also occur in three dimensions if the heat source size is smaller than the conducting material. If the heat source is smaller than the conducting material, the heat is concentrated in one spot, causing a hot spot. In Fig. 2.4, heat is being conducting in ...
Evaluation of Thermal Energy Storage Materials for Solar
Evaluation of Thermal Energy Storage Materials for Solar

... Of the above methods, sensible and latent heat storage systems are in use, chemical energy storage systems are being proposed for use in the future for medium and high temperature applications. The specific application for which a thermal storage system is to be used determines the method to be adop ...
ECBC Envelope
ECBC Envelope

... to providing physical and visual connection to outside; it also allows heat and light in and adds beauty to the building. Solar radiation coming in through windows provides natural lighting, natural air and heat gain to the space inside, thus significantly impacting the energy usage of the building. ...
Fundamentals of Thermodynamics Applied to Thermal
Fundamentals of Thermodynamics Applied to Thermal

... point as seen in Fig. 1. Therefore, above the critical pressure and temperature there will be no liquid–vapor phase change. The process illustrated in Fig. 1 takes place at a constant pressure, known as isobaric, which is imposed on the system by the piston weight plus local atmospheric pressure. Ot ...
Effects of temperature-dependent material properties on welding
Effects of temperature-dependent material properties on welding

... shown in Fig. 1, to record the temperature history. A dial gage was used to measure the transient deflection of the beam at the lower, midpoint of the beam during welding. After welding was completed and the plate cooled to the room temperature, the longitudinal residual stresses along the middle sec ...
Technical Articles
Technical Articles

... the plates. The amount of alternating current associated with the voltage is proportional to the capacitance. At an instant when the voltage is greatest the current is at zero and changing directon, and when the current is greatest the voltage is at zero and changing sign. Current and voltage are ou ...
IS3215571561
IS3215571561

... space between fins, fin shape or profile, material etc. Therefore for an optimal heat sink design, initial studies on the fluid flow and heat transfer characteristics of standard continuous heat sinks of different designs have been carried through CFD simulations. It is observed from the results tha ...
RESEARCH ARTICLE Survival and arm abscission are linked to
RESEARCH ARTICLE Survival and arm abscission are linked to

... were brought to the Bodega Marine Laboratory, where they were maintained submerged in a large tank with flow-through seawater. Animals were kept at a water temperature of ~13°C for 20days before the experiment started. This acclimation period was set to homogenize the physiological state of all ind ...
Nanoscale Heat Transfer using Phonon Boltzmann Transport Equation
Nanoscale Heat Transfer using Phonon Boltzmann Transport Equation

... high speed of heat flux (e.g., pico- or femtosecond pulsed-laser heating.) Despite some issues [1], these hyperbolic equations can be used to consider the finite speed of phonons for a short time scale. However, they still cannot be used for small spatial scale. For the nanoscale heat transfer analy ...
TECHNIQUES FOR PRECISION AIR TEMPERATURE CONTROL
TECHNIQUES FOR PRECISION AIR TEMPERATURE CONTROL

... as nothing long as equilibrium as long thermal equilibrium static thermal at static be at will be tool will A machine tool not cause rate will constant rate at aa constant heat from aa machine at remove heat or remove supply or which supply Things which changes. Things will not cause it changes. tra ...
Atomic Structure
Atomic Structure

... We often talk about objects being hot or cold. But hotness or coldness are relative and are not very accurate descriptors. A more accurate way of defining the hotness or coldness of an object is to measure its temperature. To illustrate this point, consider what you feel when you step barefooted fro ...
IC2414251429
IC2414251429

... maintained constant for a longer time even when the source is continuously producing heat. 2. The temperature (when observed the) if reaches the preset lower limit temperature then the cooling system is shut down automatically in order to save ...
Analysis
Analysis

... stationary, while the other plate is moving at a speed of 200m/s. both plates are maintained at 27°C. Consider two cases, one for which the plates are separated by water and the other for which the plates are separated by air. For each of the two fluids, which is the force per unit surface area requ ...
Museum Collections in Industrial Buildings A selection
Museum Collections in Industrial Buildings A selection

... off-site facility will not meet a museum's expectations if staff feel uneasy about working - possibly alone - with collections on a remote site. Equally important, visitors must not be put off by bad or messy neighbours if a new facility is located on an industrial site. Other important management c ...
Episodic metamorphism and deformation in low
Episodic metamorphism and deformation in low

... assumption of the critical melt fraction outlined in Appendix 1. There is an overall but not systematic decrease in crustallevel from which melt is extracted. This is because after an extraction event from a given crustal depth, the maximum melt percentage is located at shallower levels, which there ...
RFQ ANSYS Progress Paper
RFQ ANSYS Progress Paper

... Note that this model is for the entire four-metre RFQ, compared to the one-metre section in Figure 2. Hence there are considerably more mesh elements, but it can be seen that some areas have had their mesh density reduced in order to circumvent memory limitations. This does not affect the eigenmode ...
ULTRASONIC MICROHEATERS USING PIEZO-CERAMICS
ULTRASONIC MICROHEATERS USING PIEZO-CERAMICS

... for MEMS application was discussed. The PZT heaters were found to attain maximum thermal efficiency around the resonance frequency. In selecting the drive frequency, there was a compromise between the maximum temperature, which was achieved at frequency of minimum impedance, and maximum efficiency, ...
Thermal Performance of Tropical Atrium
Thermal Performance of Tropical Atrium

... Atrium is defined as a space added to the buildings with at least one transparent facade which commonly is high [1]. It is an architectural feature in different building types such as office buildings, shopping malls and educational spaces. Designing and controlling the thermal conditions of the atr ...
First Progress Report.pdf
First Progress Report.pdf

... generation due to a temperature difference between two junctions of a thermoelectric device as defined by the Peltier-Seebeck effect. Thermoelectric devices have been used for temperature regulation by operating as a heat pump to maintain computing devices and integrated circuits at optimum temperat ...
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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.
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