Which option correctly identifies a method used to prevent contamination buildup by lowering pressure and temperature?

Which option correctly identifies a method used to prevent contamination buildup by lowering pressure and temperature?

• A. Ventilation only
• B. Filter banks only
• C. Spray system lowering pressure and temperature
• D. Vent scrubbers only

Answer: (C)

Lowering pressure and temperature helps suppress contamination by reducing the energy and volatility of contaminants and by promoting their removal from the gas stream. A spray system achieves this by introducing a fine water mist into the flow: the spray absorbs heat as it evaporates, cooling the gas, and the droplets provide a surface to capture and wash away contaminants. This cooling and scrubbing action makes it harder for contaminants to deposit and accumulate, so buildup is controlled. The other options mainly move air, trap particles, or scrub contaminants without actively lowering temperature and pressure in the controlled way a spray system does.

Lowering pressure and temperature helps suppress contamination by reducing the energy and volatility of contaminants and by promoting their removal from the gas stream. A spray system achieves this by introducing a fine water mist into the flow: the spray absorbs heat as it evaporates, cooling the gas, and the droplets provide a surface to capture and wash away contaminants. This cooling and scrubbing action makes it harder for contaminants to deposit and accumulate, so buildup is controlled. The other options mainly move air, trap particles, or scrub contaminants without actively lowering temperature and pressure in the controlled way a spray system does.