Minimization of Cooling And Air-conditioning

For handling requests, the possibility of replacing the cooling water cooling water, with more intensity and increased heat transfer area you want to explore. This approach can also help in the replacement of sub-zero brine with chilled water in some applications. Technologies imported from the colder countries, as a rule, points of chilled water for cooling, as the temperature from 10C 20C is usually available from the cooling towers for most of the year in these countries. At the moment of transfer of technology or the purchase of equipment, reconstruction of heat exchangers for cooling in summer water temperature, widespread in India, or the highest possible temperature chilled water should be examined seriously.

The use of Evaporative Cooling for comfort Cooling in the Dry Areas

In arid areas, reasonable comfort temperature may be reached in the summer of the use of evaporative cooling i.e. by moistening the air with a small desert coolers or Central humidification plants. Energy consumption is likely to be only about 10% to 20% of the air conditioning system.

The Design Of The Building Cooling

A significant part of the air conditioning load is due to heat is transmitted through the walls and the heat stored in the walls. This results in the room the inner surface of the wall, while at temperatures higher than that of the human body. This leads to discomfort as the human body is unable to radiate heat walls; therefore heat transfer (cooling of the body) is possible only by convection (air traffic) and sweat. For cooling of building structures (walls and roofs) can itself lead to a sharp decrease in the temperature of the walls and human comfort.

The design of the building cooling helps neutralize this solar thermal load by cooling the structure itself. The Central Building Research Institute, Roorkee, suggested evaporative roof cooling (using wetted mats on the roof to neutralize the heat load. Wetted mats can be spread on the roof, the water will evaporate, effectively neutralizing solar thermal load. The mats can be stored wet a small pump which is controlled humidity sensor or timer. It should be noted that the Mat should be only wet and not flooded with water. This system can be very effective to eliminate or significantly reduce the energy consumption of air conditioning.

In Mumbai company specializing in innovation in the field of refrigeration and air conditioning, expanded this concept and tried cooling the roof and floor burying grid, water-filled pipes (Fig. 3.1), in vacuum, in the ceiling and the floor. Water evaporates on 25C and the grid is connected to a small tower, which acts as a heat sink for cooling and condensation of water vapor.

This concept was first attempted in the pent house in Ahmedabad. The house is cooled mixture of refrigerants that are circulating in the pipes buried in the walls and roof, thermosiphon action. Solar heat and heat from the rooms scattered in a small tower and pump, located on the terrace, to the walls remain low temperatures. In May, Ahmedabad ambient temperature on 41.6C, terrace floor temperature was 61.9C, but the structure of the system cooling assured that the temperature in the room was only 27C. In fact, observations show that the room temperature remains practically unchanged over the day and night.

A comparison of house in Jaipur, the structure of the cooling system, with neighbouring conventional house without cooling structure shown in table 3.1. It should be noted that the roof of the lower temperature on the structure of the cooling 29,3 C compared to 45.2 C without cooling structure. The structure of cooling of the cooled part of the building is becoming a heat sink for the whole structure. Cooler structure helps to better heat transfer from the human body structural and raise the level of comfort. This can help eliminate or reduce the need for air conditioning.

The design of the building cooling potential actively use innovative methods to eliminate or minimize the need for air conditioning...