Experimental Investigations into Defrost Mode Flow for Vehicle Thermal Comfort

2008 ◽  
Vol 35 (2) ◽  
pp. 144-160
Author(s):  
M. Alhajri ◽  
A. Arrousi ◽  
S. Agil
Keyword(s):  
Thermal Comfort ◽  
Experimental Investigations

Analysis of Building Materials for Indoor Thermal Performance and Thermal Comfort

2013 ◽  
Vol 845 ◽  
pp. 472-476
Author(s):  
Harimi Djamila
Keyword(s):  
Thermal Comfort ◽  
Building Materials ◽  
Thermal Conditions ◽  
Climatic Conditions ◽  
Passive Cooling ◽  
Experimental Investigations ◽  
Design Strategies ◽  
Energy Usage ◽  
Whole Space ◽  
Least Energy

In recent years, there has been an increasing interest on energy saving in building sector.Passive cooling is considered the best strategy for improving the indoor thermal conditions and comfortwith lowest cost energy usage. In air-conditioned era, however, many designers have fully forgotten that the main objective of building thermal comfort is not to cool the whole space but rather the resident of the building with the least energy consumption. This investigation is about discussing some of the available passive cooling strategies based on experimental investigations. Results from this study showed that building materialsaffect the indoorair temperature, which in turn willaffect the indoor thermal comfort. Design strategies more suitable under tropical humid climatic conditions were suggested.

scholarly journals A Novel Methodology for Evaluating the Impact of Energy Efficiency Measures on the Cabin Thermal Comfort of Electric Vehicles

Energies ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3872 ◽  
Author(s):  
Daniele Basciotti ◽  
Dominik Dvorak ◽  
Imre Gellai
Keyword(s):  
Steady State ◽  
Thermal Comfort ◽  
Control Systems ◽  
Electric Vehicles ◽  
Energy Savings ◽  
Experimental Investigations ◽  
Climate Control ◽  
Perfect Agreement ◽  
Horizon 2020 ◽  
The Impact

Climate control systems have a largely negative effect on the energy consumption of electric vehicles and consequently on their real driving range. Improving the efficiency of climate control systems requires advanced simulation tools for an accurate evaluation of both the energy savings and thermal comfort of innovative heating and cooling solutions. In this study, the advancements beyond the state of the art consists primarily of the methodology tackling the reduction of computational costs of intensive computational fluid dynamics (CFD) simulations and/or time-consuming experimental investigations and the simultaneous assessment of vehicle cabin thermal comfort and energy flows. The approach was validated against climatized chassis dyno measurements from the EU Horizon 2020 research project QUIET. Indeed, all the considered locations within the cabin were properly validated, both in steady state and transient conditions with the largest deviations at steady state below 3 °C. Additionally, the validation results show a perfect agreement for the average cabin predicted mean vote (PMV) value and a largest deviation in terms of the PMV for the other locations below 0.3. Furthermore, the applicability of the methodology is proved with the help of its application on a parametric study for which various cabin temperature setpoints and heating, ventilation and air conditioning (HVAC) modes were simulated in winter operation.

scholarly journals Experimental investigations and computational thermal simulation on human thermal comfort during performing office tasks

2021 ◽  
Vol 1793 (1) ◽  
pp. 012076
Author(s):  
Ahmad Rasdan Ismail ◽  
Norfadzilah Jusoh ◽  
Nor Kamilah Makhtar ◽  
Raemy Md Zein ◽  
Ismail Abdul Rahman ◽  
...  
Keyword(s):  
Thermal Comfort ◽  
Thermal Simulation ◽  
Experimental Investigations ◽  
Human Thermal Comfort

scholarly journals Experimental investigations on the cooling of a motorcycle helmet with phase change material (PCM)

2011 ◽  
Vol 15 (3) ◽  
pp. 807-816 ◽  
Author(s):  
S.C. Fok ◽  
F.L. Tan ◽  
C.C. Sua
Keyword(s):  
Solar Radiation ◽  
Thermal Comfort ◽  
Phase Change ◽  
Phase Change Material ◽  
Heat Generation ◽  
Experimental Investigations ◽  
Melting Time ◽  
Motorcycle Helmet ◽  
Simulated Solar Radiation ◽  
Change Material

The thermal comfort of motorcycle helmet during hot weather is important as it can affect the physiological and psychological condition of the rider. This paper examines the use of phase change material (PCM) to cool a motorcycle helmet and presents the experimental investigations on the influences of the simulated solar radiation, wind speed, and heat generation rate on the cooling system. The result shows that the PCM-cooled helmet is able to prolong the thermal comfort period compared to a normal helmet. The findings also indicate that the heat generation from the head is the predominant factor that will affect the PCM melting time. Simulated solar radiation and ram-air due to vehicle motion under adiabatic condition can have very little influences on the PCM melting time. The results suggested that the helmet usage time would be influenced by the amount of heat generated from the head. Some major design considerations based on these findings have been included. Although this investigation focuses on the cooling of a motorcyclist helmet, the findings would also be useful for the development of PCM-cooling systems in other applications.

scholarly journals Investigations of (local) thermal comfort as a function of radiation asymmetry and vertical air temperature difference

2019 ◽  
Vol 111 ◽  
pp. 02053
Author(s):  
Maximilian Beyer ◽  
Lars Schinke ◽  
Giulia Alessio ◽  
Joachim Seifert ◽  
Michele De Carli
Keyword(s):  
Thermal Comfort ◽  
Air Temperature ◽  
Temperature Difference ◽  
State Of The Art ◽  
Experimental Investigations ◽  
Air Velocity ◽  
Climate Chamber ◽  
Measurement Results ◽  
The Subject ◽  
Local Thermal Comfort

The following article describes an extract of the results of experimental investigations on the topic of thermal comfort as a function of radiation asymmetry. The investigations were carried out in the climate chamber [1, 2] of the TU Dresden with the help of subjects. The radiation asymmetry was imprinted by subdividing the climate chamber into two vertically superimposed half-rooms, one of which was heated and the other cooled. In this way, 46 experiments on the heating or cooling ceiling were carried out. The measurement results show an inseparable link between the radiation asymmetry, the vertical air temperature difference and the air velocity. The subject assessed the room climate much more negatively than the ISO 7730 [3] would predict according to the state of the art.

Experimental investigations of the use of cartilage in tympanic membrane reconstruction

2000 ◽  
Vol 21 (3) ◽  
pp. 322-328 ◽  
Author(s):  
T ZAHNERT ◽  
K HUTTENBRINK ◽  
D MURBE ◽  
M BORNITZ
Keyword(s):  
Tympanic Membrane ◽  
Experimental Investigations

EXPERIMENTAL INVESTIGATIONS OF THE QUANTUM PHOTOVOLTAIC EFFECT IN InAs-GaSb SEMICONDUCTOR SUPERLATTICES

1987 ◽  
Vol 48 (C5) ◽  
pp. C5-183-C5-186
Author(s):  
J. BLEUSE ◽  
P. VOISIN ◽  
M. VOOS ◽  
L. L. CHANG ◽  
L. ESAKI
Keyword(s):  
Photovoltaic Effect ◽  
Experimental Investigations ◽  
Semiconductor Superlattices
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