#mistcooling

A cooling tower is a device used to reduce the temperature of water. The water is then recycled back into the many processes and industries that use it. Some industries use the water to control the temperature (sensible heat), of a process, like a car radiator. The HVAC industry uses the water to condense the refrigerant (latent heat). In the past most of the processes requiring cooling use piped town water through the equipment, cooling the equipment, and then drained the water to the gutter (100% waste). Because Australia is such a dry continent the water supply authorities introduced the Water Conservation Act, which forced all the industries to install cooling towers to recycle the water.

Cooling towers are a very important part of many chemical plants. The primary task of a cooling tower is to reject heat into the atmosphere. They represent a relatively inexpensive and dependable means of removing low-grade heat from cooling water. The make-up water source is used to replenish water lost to evaporation. Hot water from heat exchangers is sent to the cooling tower. The water exits the cooling tower and is sent back to the exchangers or to other units for further cooling.

In today’s highly competitive markets, businesses and institutions must make wise use of available resources. Increasingly the most forward-thinking companies are partnering with local utilities to reduce their demands for energy and water, both to save costs and improve the long-term sustainability of their business. Using highly treated recycled water for non-potable purposes is an effective way to reduce the demand for precious fresh-water resources. It is also a recognized green building practice. Recycled water has been used in industrial settings throughout California and the arid west for nearly 100 years.

In spray nozzle cooling, water is distributed into the inlet air to reduce the inlet air temperature by evaporative cooling prior to reaching the condensers. This increases the overall cycle efficiency and helps the plant recover some of the performance reduction caused by hot ambient temperatures. An effective water spray design needs to avoid non-uniform cooling distribution and incomplete evaporation of droplets. These issues can be avoided and an optimum design can be achieved only if the spray cooling mechanisms under these conditions are well understood. Spray cooling is becoming more popular due to its simplicity, low capital price, and ease of operation and maintenance.

Significant opportunities were identified when the operation and maintenance of the cooling system was analyzed from a water and energy efficiency perspective. EMergyKool decided to address this inefficiency by using variable speed drives on the cooling towers. Installation of variable speed drives allowed the cooling tower fans to operate at their optimal speed, depending on the weather conditions and the degree of cooling required at any given time.

Mechanical Draft, are fitted with fans to improve the airflow through the tower which increases the evaporation rate of the water which increases the capacity of the tower. Mechanical Draft Towers are used just about everywhere including the HVAC industry.

Mist Cooling, Misting Fan, Misting System.