Water Heating
When heating water, what happens to the heat energy for the temp to stay the same?
We had to heat up water. Sometimes the water would stay at the same temp for a while then keep going up. Please tell me what happens.
And what happens when the heat energy is going up rapidly?
While Eric makes some good points, I think the answer is more dependent on the specific properties of water. While Eric’s answers would hold true for all/most liquids, water is unique in that there is significant hydrogen bonding between hydrogen and oxygen atoms of the molecules.
When boiling water you are consistently adding energy in the form of heat to the system, and the temperature rises. During this stage the water molecules are acquiring more energy and moving around, but still interact with each other by hydrogen bonding. The temperature plateau that is reach occurs when the water molecules are using the acquired energy to overcome the hydrogen bonding. Finally, when the temperature increases again, it is for the water molecules to vaporize. Therefore, the plateau is the energy required to overcome hydrogen bonding before water changes phase from liquid to gas.
Further proof of this lies in how thermometers measure temperature. They actually monitor the kinetic motion of molecules surrounding them. When molecules become more excited, there are more collisions with the thermometer and this corresponds to a temperature. When hydrogen bonds are being dissociated, the energy is not being converted into motion, but instead going to breaking the bonds, and there is therefore a plateau!
Energy Saving Tankless Water Heaters
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Aroma AWK-115S Hot H20 X-Press 1-1/2-Liter Cordless Water Kettle $24.00 1.5-liter capacity Easy cordless pouring with the patented Strix electric connector Safe-grip handle and no-drip spout Easy-to-read water level indicator Elegant brushed stainless steel finish… |
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Cuisinart CPK-17 PerfecTemp 1.7-Liter Stainless Steel Cordless Electric Kettle $185.00 This Cuisinart Perfectemp Cordless Electric Programmable Kettle offers latest innovation for this product category%2E Heating water will never be easier with this handsome brushed stainless steel kettle%2E Great for making tea%2C hot chocolate or instant soups%2E It will quickly bring 1%2E75 quarts of water to a boil and then turn itself off%2E… |
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Proctor Silex K2070Y 1 Liter Electric Kettle $10.88 Housed in a smooth, modern-looking design, this 1000-watt electric kettle rapidly boils up to 1 quart of water for coffee, tea, instant soups, and more. The unit features a detachable cord and a nonspill spout for graceful serving, plus a generous handle with a secure grip. Its immersed heating element provides a rapid and quiet heating process, making it ideal for the office, home, or college dor… |
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Lasko 754200 Ceramic Heater with Adjustable Thermostat $18.40 Lasko Products 754200 Ceramic Heater 754200 Heaters… |
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Eccotemp 40H-LP Liquid Propane Outdoor Tankless Water Heater $449 Save money and enjoy ample hot water by heating your water with the Eccotemp 40H-LP gas tankless water heater. |
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Kalorik JK-31099 Dome Hot Water Kettle $59.99 The Kalorik JK-31099 dome hot water kettle offers a concealed stainless steel heating element for optimal boiling with style. |
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Kalorik JK33006AZ Aztec Pyramid Cordless Electric Hot Water Kettle $69.99 The Kalorik JK33006AZ Aztec Pyramid cordless electric hot water kettle features a special heating element design that boils water quickly. |
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Kalorik JK33006R Red Pyramid Cordless Electric Hot Water Kettle $69.99 The Kalorik JK33006R Red Pyramid cordless electric hot water kettle quickly boils water with a concealed stainless steel heating element. |
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World Marketing ELCG347 Electric Fireplace Insert $184.29 The World Marketing ELCG347 electric fireplace insert offers superior heating in a complementary package; enjoy fireplace heating at its best! |
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Soleus HM1-10-32 Space Heater $52.37 The Soleus HM1-10-32 micathermic heater is perfect for heating a space in the home or officewith reflective and convection heating. |
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Dayton NX3 Electric Oil Filled Space Heater $69.79 The Dayton NX3 heater is an electric, poratble, and oil-filled space heating unit. |
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