- Physical performance.
An in-situ test is a measurement of the radiated and discharge sound characteristics of a specific device. A common in-situ test involves installing a terminal unit in a ceiling cavity above a room that has an acoustical ceiling with no penetrations allows for direct measurement of radiated sound in a space that approximates the size and construction of a typical private office. The terminal unit has both primary and discharge air duct connections. Discharge air is passed through a divider section in the plenum, allowing little or no radiated sound from the terminal to penetrate into the plenum over the discharge sound room. Then a specific amount of discharge air is directed through a diffuser in the ceiling of the discharge sound room, which allows direct measurement of discharge sound.
With so many other installation types available, we are capable of building a variety of spaces and product configurations. The following examples briefly describe some of the in-situ options we are capable of offering:
- A replica patient room built with acoustical tiles, drywall finish, and chilled beams installed in the ceiling. A microphone in the patient room is used to measure the beam's sound level in the environment.
- An exposed fan powered unit in a replica museum/art gallery to measure radiated sound of the exposed terminal.
- General office space built with testing of products installed in various locations to determine the optimal layout.
- A large mock-up area that highlights displacement, chilled beams, and overhead air distribution and simulates loading for occupants, as well as shell gain or loss.
One of several mock-up rooms
- A patient room highlighting air distribution methods that meet the requirements of ASHRAE Standard 170.
- A surgical space with operating table and surgical lights, capable of demonstrating two common cleanroom air distribution methods: perimeter curtain and laminar flow.
Operating room air distribution demo room
Demonstration of overhead and displacement in operation.