Zhuzhou Sanda Electronic Manufacturing

Electronic cabinets, or electronic enclosures, safely house electronics equipment inside a case for indoor or outdoor use. These units have a variety of uses, such as for housing the electrical components of a stop light, or housing the internal elements of a computer or other electronic equipment.  The cabinets help protect the electronic components from weather, human tampering, and dust. Most electronic enclosures require additional cooling pieces for the electronic items inside the box. If the electronic items get overheated, they can short out and cause problems with the unit. The cooling of the unit is extremely important, which is why so many casing companies focus on new and innovative cooling methods. Some newer electronic cabinets have cooling components built right into the casing system. These cooling systems contain air conditioning pieces that help maintain the desired temperature inside the unit no matter what the outside temperature is, or how hot the ...

A TEC (Thermoelectric cooler) is an application that harnesses thermoelectricity, more specifically, the Peltier effect. This is basically turning an electrical voltage input into a temperature difference. This is the converse of the Seebeck coefficient, which is turning a temperature difference into a voltage potential (used in Thermoelectric Generators). As for parameters for thermoelectrics in general, parameters would just be used to determine certain statistics for a specific scenario given. These would not only be used in calculating things like figure of merit (efficiency of the thermoelectric application, aka ΔZ), but also how effective your TEC would be. You asked about ΔT, Q, and Th. ΔΤ is the difference in temperature (i.e. your hot side is 200F, and your cold side is 20F, so 180 is your temp. difference). Q in this case could refer to either the charge/voltage of the application or some kind of heat factor. It would depend on your case to see what it would exactly mean. ...

There are two main categories of applications of thermoelectrics. The first is cooling and heating (thermal management) and the second is power generation. The term “novel” changes meaning from person to person and over time. My favorite application and probably most useful to humanity is in the category of power generation. Thermoelectrics can be used to convert body heat into electricity and this electricity is used to power electronics that allow implantable medical devices to operate without batteries. The advantage is the patient no longer needs to have surgery to replace the batteries. This reduces patient psychological and physical pain, reduces financial strain for the patient and health care system.

What size fan do I need to cool my cabinet? There are a number of things to consider here, but the main considerations are the size of the cabinet, and how many hot devices will be in the cabinet.  First you need to understand that you don’t need to turn your cabinet into a wind tunnel!  Gently moving air through and out of the cabinet is all you really need to keep the hot stagnant air away from your expensive electronics. General sizing: Single 80mm fan                     1 component up to 3 cubic feet Dual 80mm fans                     1-2 components up to 6 cubic feet (no shelves) Single 92mm fan                     1-2 components up to 6 cubic feet (no shelves) ...

Q. What are the advantages of using a Vortex A/C or Vortex Cooler compared to a typical enclosure air conditioner? A.  Low purchase price, compact size, ease of installation, little to no maintenance, greater reliability, ability to operate in harsh environments, and significantly longer warranty period. Q. What if I just want to keep my enclosure at a slight positive pressure and it is not in a hazardous location? A.  If it is desired to cool the enclosure and maintain a slight pressure just to keep out infiltrating dust and dirt (and the enclosure is NOT in a hazardous location), then alternatives are available: One, the Vortex Cooler can be operated continuously without a thermostat, as long as the heat load remains fairly constant. Two, Vortex A/C models are equipped with a purge-air port that, when opened, will allow a small portion of low pressure air to "bleed off" into the enclosure to pressurize it, regardless of whether or not the unit is in the cooling mode ...

1. How Does An Air To Air Heat Exchanger Work? An air to air heat exchanger uses a heat pipe to transfer heat from a hot enclosure to the cooler ambient air. The heat pipe is an evacuated tube filled with a special refrigerant liquid. This refrigerant boils when absorbing heat from the hot air in the enclosure. The resultant vapor rises to the top of the tube and is condensed by the cooler ambient air when giving up its heat. The process is continuously repeated. 2. How Much Power Do They Use? A heat pipe uses no electrical energy at all. However, for efficient operation, small fans are required to circulate the air inside the electrical enclosure and to blow outside air over the top of the heat pipe. 3. Can They Cool Below Ambient Temperature? No. An enclosure using an air to air heat exchanger will always be slightly warmer than the surrounding air temperature. The actual differential will depend on the heat load and the capacity of the air to air heat exchanger. 4. How ...

Air-to-Air Heat Exchangers Pros: Low maintenance, inexpensive Cons: Cannot cool below ambient Efficient, cost-effective cooling can be realized through heat pipe assembly systems. These air-to-air heat exchangers remove waste heat from sealed electrical panels and enclosures to protect sensitive electronic components without exposing them to harsh, dirty environments outside the cabinet. Heat pipes in air-to-air heat exchangers work to cool enclosures by using evaporative cooling to transport thermal energy from one place to another via the evaporation and condensation of a coolant. Heat pipes transfer heat through a “phase change” of the coolant, similar to a compressor-based air conditioner, except that they have no moving parts. Heat pipes are typically constructed of a metal container (aluminum, copper, etc.) that holds a liquid (water, acetone, etc.) under pressure. The inner surface of the tube is lined with a porous material that acts as a wick. When heat is applied to the out...

The heat exchanger  integrated by heat exchanging system and intelligent monitoring system. It can eliminate heat passively through the automatically started heat exchanging system with changing of temperature inside if the equipment, thus temperature inside the equipment can be controlled within the range pre-set. Technical Data  Technical  parameters of DC48V 80W/K outdoor telecom cabinet heat exchanger P roduct mode SDHE-080EA  ( cabinet heat exchanger ) Unit Dimensions  904x404x146(HxWxD) mm Weight 18 kg Mounting method Embedded Working temperature -40-65 ℃ Input voltage DC 48V±20%   50/60Hz Cooling capacity                    80 W/k Heating (optional) 1000 W Fan powerconsumption          68 W Internal Airflow 450 m3/h IP grade IP 55 Refrigerant R134A Noise 50~...