Update: Well combining word in my book says its the root word plus the combining vowel. So in cardiology, the word cardi is the root word meaning heart and the O (combining vowel) connects it to LOGY which means the study of. So the combining word would be cardi/o (cardio) But I cant seem to figure out these bigger... show more Well combining word in my book says its the root word plus the combining vowel. So in cardiology, the word cardi is the root word meaning heart and the O (combining vowel) connects it to LOGY which means the study of. So the combining word would be cardi/o (cardio) But I cant seem to figure out these bigger words. 1 following.
heat exchanger - device that transfers heat from one liquid to another without allowing them to mix. device - an instrumentality invented for a particular purpose; the device is small enough to wear on your wrist; a device intended to conserve water.
A device called a heat exchanger takes the heat from the liquid and uses it to heat the air inside the home. A geothermal system can cool your house during the summer, too! It just works in reverse, absorbing the heat from the air inside your home and moves it back into the earth. A geothermal heater is also very energy-efficient. Almost none of the energy used is wasted, so it helps keep heating bills very low during the winter.