3K3'2019 Thermal Transfer by MrGuay Hansen https://padlet.com/guay_hansen/me5zvqe2mm5f Application of Thermal Transfer en-us 2019-04-17 01:30:32 UTC 2026-01-05 03:12:21 UTC hello@padlet.com Guay Hansen https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352170794 Item: This is an 'airpot'.
Purpose: It's purpose is to store warm water and keep the warm water warm as long as possible.
Features: 
  • the outer surface is plastic, which is a poor conductor of heat. This reduces the rate of thermal enegy lost by conduction
  • There is a lid, which prevent warm, less dense water vapour to escape. This prevents the creation of convection current and evaporation, hence reducing the rate of thermal energy lost by convection.
  • The outer surface is white and smooth, which is a poor emmitter of infrared radiation. This reduces the rate of thermal energy lost by radiation.


]]> 2019-04-17 01:34:57 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352170794 https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352259730 .]]> 2019-04-17 12:15:00 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352259730 Ivan https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352259738 Item: This is a coin.
Purpose:It is used as money.
Features:It has a rough surface which could help in the absorption of heat.
-It is made of copper which is a good conductor of heat.It increases the rate of thermal energy gained by conduction.]]> 2019-04-17 12:15:03 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352259738 WenYue https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352523618 Item：This is an thermos flask.
Purpose: To store warm water.
Features: 
•The outer surface is red and smooth, which is a poor emitter of infrared radiation. This decreases the rate of thermal energy loss by radiation.
•The outer surface is plastic which is a poor conductor of heat. This decreases the rate of thermal energy loss by conductor.

]]> 2019-04-18 10:59:01 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352523618 https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352727014 .]]> 2019-04-19 09:00:12 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352727014 Xin yi https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352727018 Item: pan
Purpose: to cook food
Features:
  • The handle of the pan is made of wood, which is a poor conductor of heat. This reduces the rate of thermal energy gain by conduction
  • The pan is made out of stainless steel which is a good conductor of heat. This increases the rate of thermal energy gain by conduction
]]> 2019-04-19 09:00:16 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352727018 Zhi Yuan https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352836331 Item: This is an oven. 
Purpose: It's purpose is to heat up food 
Features: 
1. The outer surface is smooth  which is poor emitter of infarred radiation.This reduces the rate of thermal energy lost  by radiation. 
 
2. The metal rack inside the oven is a good conductor of heat which increases the rate of thermal energy lost by conduction.
 
3. As the oven is heated from the bottom,the air gains heat and expands becoming less dense in the process.Since now the air at the bottom is less dense it rises to replace the cooler air and the cooler air will sink hence increasing the rate of themal energy gain by the food from convection


]]> 2019-04-20 05:40:30 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352836331 Shi Ting https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352837052
Item : clothes iron 
Purpose : to straighten clothes 
Features : 
  • Sole plate: The sole plate is made up of molten aluminum and stainless steel 
  • it is so that heat from the iron can be codified away quickly to the shirt and ironing board to prevent burning the shirt 




]]> 2019-04-20 06:02:15 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352837052 Earlene https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352852982 item: Jacket
purpose: keep a person warm from cold weathers.
features: 
1.long and black, suggest that it is a poor emitter or infarrred radiation so as to decrease the rate of thermal energy loss to the surroundings.
2. it is made of cotton which is a poor conductor of heat to decrease the rate of thermal energy loss to the surroundings to keep a person warm.]]> 2019-04-20 13:04:27 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352852982 Jenell https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352855012
Item: pot 
Purpose: to cook/heat food 
Features: 
1.the handles of the pot are made out of rubber which is a poor conductor of heat. this reduces the rate of thermal energy gained by conduction,preventing users from burning themselves. 
2.the pot is made out of metal which is a good conductor of heat. this increases the rate of thermal energy gained by conduction, and allow the food to be cooked/heated up in a shorter amount of time. 

]]> 2019-04-20 13:44:50 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352855012 Vicki https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352910718 Item: this is a spoon. 
Purpose : it is a utensil to eat food with. 
Features : it is made out of plastic, which is a poor conductor of heat, so the person who is eating the hot/warm food will not get burned. As since plastic is an insulator of heat, it will gain thermal energy slower compared to metal spoons. 

]]> 2019-04-21 09:56:38 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352910718 https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352913361 item:ladle
purpose:to scoop up soup
features:
-it has a plastic handle as plastic is a poor conductor of heat.this reduces the rate of thermal energy gained by conduction so that the person using the ladle will not get scalded ]]> 2019-04-21 10:55:21 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352913361 https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352914945 Jiaqi 
Item: oven gloves
Purpose : To prevent hands from getting burnt from touching hot things in the oven 
Features: it is made up of clth and cotton which are poor conductors of heat. It is very thick so heat will not pass through the glove while touching the hot item. ]]> 2019-04-21 11:34:34 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352914945 Jia Xu https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352915120 Item: kettle
Purpose: it is to boil water
Features:
- It has a plastic handle which is a poor conductor of heat. This reduces the rate of thermal energy gained by conduction so that the person holding the kettle will not get scalded.
- The part in contact with the heat source is made of steel which is a good conductor of heat. This increases the rate of thermal energy gained by conduction so that the water in the kettle will be heated faster.
- When the water is heated at the base of the kettle, the hot water will expand, become less dense and rise. The cooler water at the top, being denser, will sink. Hence, convection will take place and the water will be heated up faster.

]]> 2019-04-21 11:39:58 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352915120 Kamalika https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352920513 item: wool socks
purpose: to keep our feet warm
-it is black in colour,hence it emits infarred radiation which will decrease the rate of thermal energy loss to the surroundings]]> 2019-04-21 13:27:46 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352920513 Britney https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352921477 Spatula Item: spatula 
Purpose: to flip food that is hot and to distant our hands from the hot surface.

The end of the spatula is made of rubber which is a poor conductor of heat. This decreases the rate of thermal energy gained by conduction, preventing the person from feeling the heat from the hot surface. 

]]> 2019-04-21 13:46:44 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352921477 Huey Wei https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352921511  Item : this is a Connie ware container.
Purpose: It's purpose is to store warm food and keep it warm for as long as possible when it is heated up.
Features: 
  • The container part is made out of glass- ceramic which is a poor conductor of heat. This reduces the rate of thermal energy lost by conduction.
  • There is a lid which prevents warm, less dense air to escape, keeping the food warm. This prevents the creation of convection currents , hence reducing the rate of thermal energy lost by convection.
  • The outside surface is smooth and white, which is a poor emitter of infrared radiation. This reduces the rate of thermal energy lost by radiation.
]]> 2019-04-21 13:47:26 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352921511 Lingjun https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352921919 Item:sweater
Purpose: to keep a person warm from cold weathers. 
Features: long and black and made of wool ,hence it emits infrared radiation which will decrease the rate of thermal energy loss to the surroundings. 

]]> 2019-04-21 13:54:09 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352921919 Wei Yu https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352922003 Item: Kettle
Purpose: To boil water
Features:
-Made of metal which is a good conductor of thermal energy thus rate of thermal energy gained is faster and water will boil quicker
-Water at base gains heat and increases in volume, thus having lower density and rises to the top of kettle. Cooler water will flow down and gain thermal energy, continuing the cycle and creating a convection current.]]> 2019-04-21 13:55:52 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352922003 https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352924551 2019-04-21 14:40:05 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352924551 Xiao yu https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352924740 Item: cup
Purpose: to hold liquids
Features: 
-made of ceramic so that rate of thermal energy absorbed by ceramic is decreased since it is a poor conductor of heat.  
-has a handle so that user does not need to touch body of cup, which is more likely to be hotter than the handle.  ]]> 2019-04-21 14:42:55 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352924740 https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352952581  ]]> 2019-04-21 23:08:06 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352952581 emylia https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352953150 item: black sweater
purpose: to keep a person warm

features: made out of black wool and hence it is a poor emitter of infrared radiation so as to decrease the rate of thermal energy lost to surroundings. also it is made out of wool which is a poor conductor of heat decreasing the rate of thermal energy lost to surroundings. ]]> 2019-04-21 23:16:52 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/352953150 https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/353015209 2019-04-22 10:31:50 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/353015209 Wei Jun https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/353015841 Item: This is a styrofoam cup.
Purpose: It’s purpose is to hold warm water or drinks and keep them warm as long as possible, for the user to drink their drinks.
Features: 
• The cup is made out of styrofoam, which is a poor conductor of heat. This reduces the rate of thermal energy lost by conduction.
• The outer surface is white and smooth, which makes it a poor emitter of infrared radiation. This reduces the rate of thermal energy lost by radiation.]]> 2019-04-22 10:40:14 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/353015841 Hekun https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/353022976 Item: This is a frying pan.
Purpose: To cook food
Features:
- The pan is made out a good conductor of heat which increases the thermal energy gain by conduction, allowing the food to be cooked thoroughly and quickly and to be eaten by greedy humans.
- The handle is made out of a poor conductor of heat which decreases the rate of thermal energy gain by conduction, allowing the person to hold the pan safely without burning his/her hands.]]> 2019-04-22 11:49:46 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/353022976 https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/353024828 2019-04-22 12:03:31 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/353024828 Wen shan https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/353024838 Item: Instant cup noodle
Purpose: It is to contain the noodles and traps heat in order to ensure that the noodles are cooked as fast as possible. 
Features:
- It is made out of styrofoam, which is a poor conductor of heat. This is to ensure that minimal thermal energy is lost through conduction of thermal energy through the cup and to the surrounding air to ensure that the noodles get cooked quickly. It also prevent our hands from burning when we touch the cup to eat the noodles. 
- It have a lid to ensure minimum hot air escape through convection of air inside the cup to ensure that the water stays as warm as possible to cook the noodles faster. ]]> 2019-04-22 12:03:36 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/353024838 zhixuan https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/353032352 item: bowl
purpose: hold food
features: made up of ceramic which is a poor conductor of heat which slows down the thermal energy transferred from the hot food to ur hands so one will not get burned when holding the food, it has a small base so it helps to reduce surface area in contact w the hands, can hold hot food for a longer time

]]> 2019-04-22 12:48:41 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/353032352 https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/353032489 2019-04-22 12:49:22 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/353032489 Arianne https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/353032517 Item: This is a stove.
Purpose: It is used to cook food.
Features:
-It is metal, which is a good conductor of heat. This increases the rate of thermal energy gain by conduction.
-It is black, so it is a good emitter of infrared radiation. This increases the rate of thermal energy gain by radiation.]]> 2019-04-22 12:49:29 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/353032517 Wee Leong https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/353064262 Rice Item: Rice cooker
Purpose: Cook rice 
Features: 
1)The cooking pan in the rice cooker is made out of metal which helps to increase the rate of thermal energy transfer by conduction from the heating plate to the water inside the cooking pan. 
2) The heating plate is located at the base of the rice cooker so that hot water will expand, become less dense and rise. The cooler water at the top will then become more dense and sink. Hence convection takes place allowing the rice to be cooked faster via the absorption of water.]]> 2019-04-22 14:34:13 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/353064262 Josthan https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/353072539 Item:This is a human leg
purpose:for humans to walk
-This human leg has a lot of fats.Fats is not a good conductor of heat.This decreases the rate of thermal energy transfer from the body to the leg.That is why when our legs are out of the blanket,we get cold feet.
-The leg also contains water.The hot water will expand become less dense and rise.The cooler water at the top will become denser and will sink.Thats why we et muscle cramp

]]> 2019-04-22 14:56:51 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/353072539 ZhenXi https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/353197523
item:styrofoam box
purpose:  to stold cold items 
features:Styrofoam cooler does a good job of keeping things cold because the material is a poor conductor of heat. A closed container of Styrofoam creates a “cold zone” into which heat from the outside enters at a very slow rate. Styrofoam has good insulating properties because it has millions of tiny air bubbles that slow the progress of heat through the material.]]> 2019-04-22 23:04:04 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/353197523 Aliah https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/353726519 Item: Sweater
Purpose: To keep people warm
Features: Made up of cotton. Cotton is a bad conductor of heat so it does not transfer heat from your body to the surroundings. Through conduction, it transfers little heat but because it is a bad conductor, tour body will still be warm]]> 2019-04-24 13:38:53 UTC https://padlet.com/guay_hansen/me5zvqe2mm5f/wish/353726519