FAQ about Tec Air Conditioner
Q. What is the maximum temperature a TEC can heat to?
A. For a standard single stage TEC, the maximum temperature it can generate is about 120 Celsius. It can go higher, depending on application, ambient temperatures, and the rest of the assembly, but care should be taken to avoid damage to the TEC if the maximum temp is exceeded.
A. For a standard single stage TEC, the maximum temperature it can generate is about 120 Celsius. It can go higher, depending on application, ambient temperatures, and the rest of the assembly, but care should be taken to avoid damage to the TEC if the maximum temp is exceeded.
Q. How much heat can a TEC produce?
A. The amount of heat produced at the hot side is the sum of the input power and the heat pumped (Qc). Using the two charts (graphs) from the spec sheet, look up the Qc for the input amperage you are giving the TEC and add it to the input power (input amps times input volts). For example, let's say you decide to give a certain TEC 12 volts at 5 amps. This is 60 watts (5 x 12) of input power. Now, looking at the left hand chart ( Qc vs. Amps), you find that the TEC will have a Qc of 85 watts with an input of 5 amps and an expected delta T of 20 degrees. So, the total heat dumped at the hot face is 60 + 85 = 145 watts of heat. All input power given to a TEC always comes out as heat.
A. The amount of heat produced at the hot side is the sum of the input power and the heat pumped (Qc). Using the two charts (graphs) from the spec sheet, look up the Qc for the input amperage you are giving the TEC and add it to the input power (input amps times input volts). For example, let's say you decide to give a certain TEC 12 volts at 5 amps. This is 60 watts (5 x 12) of input power. Now, looking at the left hand chart ( Qc vs. Amps), you find that the TEC will have a Qc of 85 watts with an input of 5 amps and an expected delta T of 20 degrees. So, the total heat dumped at the hot face is 60 + 85 = 145 watts of heat. All input power given to a TEC always comes out as heat.
Q. Can I power a TEC without it being mounted to a heat sink?
A. A TEC should never be powered without the hot side connected or mounted to some metallic object to absorb the heat. Typically, this metallic object is a heat sink or water block, but for testing purposes, a metal table, chunk of aluminum, copper, or even steel may be used for a short period of time such as a few minutes or less.
A. A TEC should never be powered without the hot side connected or mounted to some metallic object to absorb the heat. Typically, this metallic object is a heat sink or water block, but for testing purposes, a metal table, chunk of aluminum, copper, or even steel may be used for a short period of time such as a few minutes or less.
Q. Why does the TEC need to have a heat sink or other metallic object on the hot side?
A. The TEC pumps heat from its cold face to the hot face, therefore, heat is being dumped out of the hot side and must be removed in order for the TEC to continue to work. If no heat sink or metalic object is there to absorb the heat, then the TEC will stop cooling and can even be damaged as it begins to overheat.
A. The TEC pumps heat from its cold face to the hot face, therefore, heat is being dumped out of the hot side and must be removed in order for the TEC to continue to work. If no heat sink or metalic object is there to absorb the heat, then the TEC will stop cooling and can even be damaged as it begins to overheat.
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