Consumer & Gadgets
To heat your home without damaging the climate, you will need to replace your gas boiler. UK government advisers recommend switching to appliances that run on electricity.
16 hours ago
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Engineering
Transitioning away from per- and polyfluoroalkyl substances (PFAS), which offer water- and oil-repelling properties on the outer shells of firefighter turnout gear, could bring potential performance tradeoffs, according to ...
Nov 30, 2023
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Energy & Green Tech
It's tough for the cement and lime business to make its important products without generating high emissions. So, the industry is investing in research and innovative pathways to reduce its hard-to-abate emissions.
Nov 30, 2023
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Robotics
Researchers have developed a self-healing robotic gripper for use in soft robotics that is adaptable, recyclable and resilient to damage, thanks to heat-assisted autonomous healing.
Nov 27, 2023
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55
Engineering
Physicists at Martin Luther University Halle-Wittenberg (MLU) and Central South University in China have demonstrated that, by combining specific materials, heat in technical devices can be used in computing. Their discovery ...
Nov 27, 2023
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Business
A new report, led by UofG housing experts, exposes the intricate challenges hindering the adoption of heat pumps in the U.K. Only 55,000 installations are occurring yearly as of mid-2023, considerably behind the U.K. government's ...
Nov 24, 2023
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Energy & Green Tech
Salt batteries can store summer heat to be used in winter, but which salt works best for the purpose? On 19 December, Lian Blijlevens will defend her Ph.D. thesis on her research into salt for heat storage at Radboud University.
Nov 24, 2023
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Engineering
A research team has successfully developed an environmentally friendly refrigerant compressor using an electrochemical method instead of a mechanical method. The development is published in Renewable Energy.
Nov 24, 2023
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Engineering
As power generation from sources like solar and wind increases, along with the introduction of devices such as heat pumps and batteries, a new optimization tool created at the University of Surrey will help the UK plan for ...
Nov 16, 2023
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Consumer & Gadgets
As night falls earlier and temperatures drop, it's time to get cozy under a blanket and brew your favorite tea.
Nov 16, 2023
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In physics and thermodynamics, heat is the process of energy transfer from one body or system to another due to a difference in temperature. In thermodynamics, the quantity TdS is used as a representative measure of the (inexact) heat differential δQ, which is the absolute temperature of an object multiplied by the differential quantity of a system's entropy measured at the boundary of the object.
A related term is thermal energy, loosely defined as the energy of a body that increases with its temperature. Heat is also loosely referred to as thermal energy, although many definitions require this thermal energy to actually be in the process of movement between one body and another to be technically called heat (otherwise, many sources prefer to continue to refer to the static quantity as "thermal energy"). Heat is also known as "Energy".
Energy transfer by heat can occur between objects by radiation, conduction and convection. Temperature is used as a measure of the internal energy or enthalpy, that is the level of elementary motion giving rise to heat transfer. Energy can only be transferred by heat between objects - or areas within an object - with different temperatures (as given by the zeroth law of thermodynamics). This transfer happens spontaneously only in the direction of the colder body (as per the second law of thermodynamics). The transfer of energy by heat from one object to another object with an equal or higher temperature can happen only with the aid of a heat pump, which does work.
This text uses material from Wikipedia, licensed under CC BY-SA
