Raghavan kael eggie student branch faculty advisor. When warm, dry unsaturated air is pulled through a watersoaked pad, water is evaporated and is absorbed as water vapor into the air. Annual savings depend on the building type and the wb efficiency. It is essential to provide the required amount of ventilation for your evaporative cooling system to function properly by opening windowsdoors whenever the cooler is operating. A schematic and system illustration of indirectdirect evaporative cooling system is shown in figure 9. Evaporative cooling design guidelines ced engineering. It uses the evaporating technique in order to produce the cool air, earning the name evaporative cooler. Evaporative cooling has both advantages and disadvantages, and the. The best time to measure wet bulb temperature to calculate the potential cooling performance of the evaporative cooling system is in the afternoon. An experimental study of a crossflow type plate heat exchanger for. Evaporative air cooling occurs in nature near waterfalls and streams, over lakes and oceans, under dense foliage, and on wet surfaces, in particular, human. Covid19 impact on evaporative cooler identify which types. Contrasting, most evaporative condensers see figure.
There are two basic types of evaporative air coolers eacs. Published on november 4, 2015 november 4, 2015 91 likes 26 comments. Course contents evaporative coolers, often called swamp coolers, are cooling systems that use only water and a blower to circulate air. Fan and pad greenhouse evaporative cooling systems 2 frequently drift out of calibration and should be checked against standards on a regular basis. Evaporative cooling design guidelines manual iii evaporative cooling design guidelines manual for new mexico schools and commercial buildings principal investigator. Your evaporative cooler works best on hot, dry days.
Energyplus is a building performance evaluation tool capable of. In terms of maintenance, this type of air cooler does not require much. The amount of cooling available from any type of cooling system is dependent on the outside weather conditions. Using this tool, performance of the iec system has been analyzed in different.
Design of new evaporative cooler and usage of different. Ware houses or garages, and it may also be used outofdoors on portico or on work sites. With a little amount of maintenance, the machines can serve durably for so long. Evaporative cooling employs waters enthalpy of vaporization, where the temperature of dry. The shell type refrigerant condensers allow the refrigerant to flow around and condense on the outside of the water tubes. The acceptability of different types of evaporative cooling system. Pdf improvement of evaporative cooling system efficiency. Raghavan department of bioresource engineering room ms1027, macdonaldstewart building, 21111 lakeshore road ste. There are many different styles of evaporative coolers. Follow the product installation manual for correct installation. The method of operation of direct evaporative coolers is same as the natural process of evaporative cooling involving water and air. Portable coolers cool small places or rooms, generally up to 300 square feet. See figure 1 the refrigerant flow is almost entirely unimpeded resulting in a very low or nearly zero pressure drop through the condenser.