Asked by: Aissata Udino
home and garden indoor environmental quality

What is a convection tube?

Last Updated: 30th March, 2020

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CONVECTION TUBE. Our greenhouse convection tube is made of a strong 4 mil virgin polyethylene with high clarity and a special blend of additives. It is designed to last for one season when installed inside of a greenhouse. Greenhouse convection tubes are staggered punched for improved air circulation and distribution.

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Also question is, what is convection in simple words?

Convection is the circular motion that happens when warmer air or liquid — which has faster moving molecules, making it less dense — rises, while the cooler air or liquid drops down. Convection currents within the earth move layers of magma, and convection in the ocean creates currents.

Beside above, what is convection kid definition? Kids Definition of convection : motion in a gas (as air) or a liquid in which the warmer portions rise and the colder portions sink Heat can be transferred by convection. convection. noun. con·?vec·?tion | k?n-ˈvek-sh?n

Besides, what are three types of convection?

Because of convection! There are three types of heat transfer: conduction, convection and radiation. Convection is a type of heat transfer that can only happen in liquids and gases, because it involves those liquids or gases physically moving.

How does a convection current work?

Convection currents form because a heated fluid expands, becoming less dense. The less-dense heated fluid rises away from the heat source. As it rises, it pulls cooler fluid down to replace it. For instance, a hot radiator heats the air immediately around it.

Related Question Answers

Jayna Welczyszk

Professional

What are the types of convection?

There are two types of convection: natural convection and forced convection. Natural convection is produced by density differences in a fluid due to temperature differences (e.g., as in “hot air rises”). Global atmospheric circulation and local weather phenomena (including wind) are due to convective heat transfer.

Vinyet Herbon

Professional

What is an example of convection?

Everyday Examples of Convection
Boiling water - The heat passes from the burner into the pot, heating the water at the bottom. Then, this hot water rises and cooler water moves down to replace it, causing a circular motion. Radiator - Puts warm air out at the top and draws in cooler air at the bottom.

Nixon Achirica

Professional

What is convection used for?

Convection creates a dry atmosphere that caramelizes the sugars faster when roasting, so foods like meats and vegetables get browner, but the interiors stay moist. It saves energy: Because food cooks faster in a convection oven, and generally at a lower temperature, it's a bit more energy efficient than a regular oven.

Krystyna Off

Explainer

Why is the convection important?

This flow, called mantle convection, is an important method of heat transport within the Earth. Mantle convection is the driving mechanism for plate tectonics, which is the process ultimately responsible for producing earthquakes, mountain ranges, and volcanos on Earth.

Ismet Lepach

Explainer

What causes convection?

Convection currents are the result of differential heating. Lighter (less dense), warm material rises while heavier (more dense) cool material sinks. It is this movement that creates circulation patterns known as convection currents in the atmosphere, in water, and in the mantle of Earth.

Lakeisha Matzeit

Explainer

How do you use convection in a sentence?

Sentence Examples
  1. The nearly vertical vanes is balanced by the convection currents.
  2. Great irregular variations in radiation and convection sometimes produce a remarkably abrupt change of temperature at a certain depth in calm water.
  3. Gerdien's estimate of the convection current is for fine weather conditions.

Abdenacer Nikolaou

Pundit

What is the difference between conduction and convection?

Conduction usually occurs in solids, through molecular collision. Convection occurs in fluids by mass motion of molecules in the same direction. The transfer of heat is through heated solid substance, in conduction, whereas in convection the heat energy is transmitted by way of intermediate medium.

Pura Costin

Pundit

What are 3 examples of conduction?

Some examples are:
  • Conduction: Touching a stove and being burned. Ice cooling down your hand.
  • Convection: Hot air rising, cooling, and falling (convection currents)
  • Radiation: Heat from the sun warming your face.

Ursel Varea

Pundit

Is AC a conduction or convection?

There are three main methods of heat transfer, mainly: Conduction, Convection and Radiation. The main process of heat transfer in terms of an air-conditioning unit is Convection, which has to do with moving fluids like air. As air is cooled, it contracts, become denser and sink.

Youness Bakhmutsky

Pundit

What is required for convection?

Convection occurs in liquids and gases. For any solid to lose or gain heat by convection it must be in contact with the fluid. Convection cannot occur in a vacuum. Convection results from a change in density in parts of the fluid, the density change being brought about by an alteration in temperature.

Ponç Sandison

Teacher

What is the difference between free convection and natural convection?

In contrast, convection is called natural (or free) convection if the fluid motion is caused by buoyancy forces that are induced by density differences due to the variation of temperature in the fluid. In forced convection we consider the inertia effects while in free convection we consider buoyancy effects.

Khamssa Glaister

Teacher

Is a fan an example of convection?

A simple example of convection currents is warm air rising toward the ceiling or attic of a house. Warm air is less dense than cool air, so it rises. Wind is an example of a convection current. Sunlight or reflected light radiates heat, setting up a temperature difference that causes the air to move.

Zahira Ulbricht

Teacher

What are examples of conduction?

Everyday Examples of Heat or Thermal Conduction
  • After a car is turned on, the engine becomes hot.
  • A radiator is a good example of conduction.
  • You can warm your back muscles with a heating pad.
  • Roasting wieners over a campfire is fun until the heat from the fire is conducted up the coat hanger to your hand.

Nataliia Maesto

Teacher

What is conduction for kids?

Conduction transfers heat within a body or between two bodies that are touching. It is a point-by-point process of heat transfer. Conduction occurs in solids, liquids, or gases that are at rest. Energy flows, but the substance through which the heat is being transferred does not itself flow.

Idelfonsa Twelkmeyer

Reviewer

What causes convection currents for kids?

Convection currents occur when there are significant differences in temperature between two parts of a fluid. When this happens, hot fluids rise and cold fluids sink. This causes movements or currents in the fluid.

Yassim Lartundu

Reviewer

Dinu Rogatkin

Reviewer

What is convection in microwave?

A convection microwave is a combination of a standard microwave oven and a convection oven which can heat the outside of food to higher temperatures than a conventional microwave. However, some models do require more space than a standard microwave, because of the larger cooking area inside.

Anghelina Winkelvos

Reviewer

What is a simple definition of radiation?

In physics, radiation is the emission or transmission of energy in the form of waves or particles through space or through a material medium. This includes: electromagnetic radiation such as radio waves, visible light, and x-rays.

Fan Bacharach

Supporter

Where are convection currents found?

Convection currents can be found in the boiling of liquid, the heat of a campfire, the weather, and even the magma in the earth.