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9. Their emotional appeal There are more uses of air cooled heat exchangers, much like the upstream production, refineries and petro-chemical facilities. It can also be employed on situations with good temperature, high pressure, corrosive fluids and environments. Moreover, air coolers could be equipped and employed in oil and coal refineries; compressor stations for gas pipelines; subsurface gas storage facilities; plants producing polychlorvinyl, polyethylene, glass fiber, biplastic; caustic soda plants; by-product coke plants and ammonia transportation and handling plants. The proper strategy of balance climbing requires the following: v Eyes. As a climber, you should view the entire route selected to climb. Use your eyes to climb the pitch. You should identify handholds and footholds, possible belay positions, alternate routes, rest spots, plus a route for down climbing or descending. You must make use of your eyes continuously to look for subsequent handholds and footholds, and rest positions. As well as to continue planning and revision from the route. v Body Position. As you move and climb, the body must be in balance; that is, unwanted weight has to be centred over your feet. Use your hands mainly for balance, and you weight together with your legs. A tighter built home means less outside air infiltrating in the home, which in turn means less oxygen to use for combustion within the furnace. As the furnace burns fuel and oxygen for combustion, it "eats up" the nearby air, which has to be "made up" with fresh air. If air cannot type in the home as quickly anymore, this could cause serious issues. As the surrounding air can be used for combustion, and not substituted for fresh air, a bad pressure in the space can take place. This could create combustion trouble for the furnace, plus consume fresh air for any person inside home.