Research shows how common plastics could passively cool and heat buildings with the seasons
Researchers at Princeton and UCLA have developed a passive mechanism to cool buildings in the summer and warm them in the winter.
Jun 27, 2024
0
54
Energy & Green Tech
Researchers at Princeton and UCLA have developed a passive mechanism to cool buildings in the summer and warm them in the winter.
Jun 27, 2024
0
54
Engineering
As energy and environmental crises rampage, sustainable solutions like ground source heat pump (GSHP) systems gain traction. GSHP systems use consistent geothermal energy below the earth's surface to provide heating and cooling ...
Jun 27, 2024
0
34
Energy & Green Tech
Power outages are on the rise nationwide as climate change brings more frequent wildfires, heat waves, and severe weather events. The Federal Emergency Management Agency (FEMA) and the state of California have both recently ...
Jun 27, 2024
0
8
Electronics & Semiconductors
Solar energy is critical for a clean-energy future. Traditionally, solar energy is harvested using silicon—the same semiconductor material used in everyday electronic devices. But silicon solar panels have drawbacks: for ...
Jul 10, 2024
0
27
Energy & Green Tech
Painting roofs white or covering them with a reflective coating would be more effective at cooling cities like London than vegetation-covered "green roofs," street-level vegetation or solar panels, finds a new study led by ...
Jul 4, 2024
1
152
Engineering
For those living in cities, space to play sports outside can be a scarcity. Recently, natural grass in parks or public sports courts has often been replaced with more durable artificial turf to allow heavy consecutive use.
Jul 9, 2024
0
38
Engineering
Bitter cold temperatures. Unrelenting heat. Power outages that last for weeks. National Renewable Energy Laboratory (NREL) researchers are planning for extreme weather by calculating what it will take to make the situation ...
Jul 1, 2024
0
26
Engineering
Power plants, factories, car engines—everything that consumes energy produces heat, much of which is wasted. Thermoelectric devices could capture this wasted heat and convert it into electricity, but their production has ...
Jul 2, 2024
0
63
Energy & Green Tech
Clean, safe water is a limited resource and access to it depends on local bodies of water. But even dry regions have some water vapor in the air.
Jun 26, 2024
0
28
Engineering
Advances in 3D printing have enabled many applications across a variety of disciplines, including medicine, manufacturing, and energy. A range of different materials can be used to print both simple foundations and fine details, ...
Jul 15, 2024
0
0
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