Results 51 to 60 of about 630,087 (180)

Numerical modeling of heat losses from hot water storage tank

open access: yesCase Studies in Thermal Engineering
Domestic hot water storage tanks (HWST) are widely used devices, and their daily operation can generate significant annual heat losses to the environment.
R. Junga   +7 more
doaj   +1 more source

Experimental Study on Heat Loss of a Single Screw Expander for an Organic Rankine Cycle System

open access: yesFrontiers in Energy Research, 2020
For displacement expanders, the irreversible losses include leakage, friction, heat dissipation, and flow resistance. Currently, the research on the heat loss of expanders is scarce, especially with regards to experimental studies.
Wei Wang   +9 more
doaj   +1 more source

Enhanced Heat Transfer Study of Serrated Fins Based on Surface and Windward Surface Modification

open access: yesZhileng xuebao, 2023
The properties of new serrated fins were numerically investigated to improve the heat transfer properties of a serrated fin radiator while controlling the increase in pressure drop loss. The effects of different fin surfaces, windward surface structures,
Zhang Xilong   +4 more
doaj  

Solar transparent and thermally insulated silica aerogel for efficiency improvement of photovoltaic/thermal collectors

open access: yesCarbon Neutrality, 2023
Photovoltaic/thermal (PV/T) utilization has been regarded as a promising technique to efficiently harvest solar energy, but its thermal efficiency highly degrades in cold seasons because of remarkable heat loss.
Lijun Wu   +5 more
doaj   +1 more source

Determining optimal local thermal environment for a vehicle passenger using thermal comfort model [PDF]

open access: yesE3S Web of Conferences
. Vehicle HVAC systems consume substantial energy to ensure passenger thermal comfort under summer and winter. Predicting passenger thermal comfort can contribute to optimizing the heating and cooling energy use.
Lim Kyoungmin   +6 more
doaj   +1 more source

Evaporative heat loss and clothing.

open access: yesJournal of human ergology, 1978
Several experiments have been conducted on the effect of clothing on evaporative heat loss. 1) The movement of sweat from production to evaporation was observed in nude subjects, on subjects wearing underwear and underdrawers, and on subjects wearing two layers of clothing during a two-hour heat exposure period.
openaire   +2 more sources

Heat Loss Calculation of the Electric Drives

open access: yesMachines
In the realm of sustainable public transportation, the integration of intelligent electric bus propulsion systems represents a novel and promising approach to reducing environmental impact—particularly through the mitigation of NOx emissions and overall ...
Tamás Sándor   +3 more
doaj   +1 more source

APPLICATION OF DIMENSIONAL ANALYSIS IN HEAT LOSS DETERMINING IN DISTRICT HEATING SYSTEMS

open access: yesActa Polytechnica, 2016
Existing procedures for determining the heat loss in heat distribution use balance relations, or rather they are based on the theory of heat and mass transfer.
Mária Čarnogurská   +2 more
doaj   +1 more source

Unveiling the link between occupational heat strain and productivity loss: evidence from South Indian informal sectors

open access: yesDiscover Public Health
Introduction In an economy like India where the informal sector dominates, occupational heat stress poses significant challenges to worker productivity.
Vidhya Venugopal   +5 more
doaj   +1 more source

Heat in the Barents Sea: transport, storage, and surface fluxes [PDF]

open access: yesOcean Science, 2010
A column model is set up for the Barents Sea to explore sensitivity of surface fluxes and heat storage from varying ocean heat transport. Mean monthly ocean transport and atmospheric forcing are synthesised and force the simulations. Results show that by
L. H. Smedsrud   +3 more
doaj  

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