List of top Building Services and Sustainability Questions

Which of the following statements is/are true?
The schematic diagram of a unitary air-conditioner operating in cooling mode, is shown in the following Figure. The component P marked in the figure represents INDOOR
The schematic diagram of a unitary air-conditioner operating in cooling mode, is shown in the following Figure. The component P marked in the figure represents INDOOR
Which of the following statements is/are correct?
A 2 TR window air-conditioner of Energy Efficiency Ratio (EER) 3.1 is catering to a room of volume 40 \(m^3\). The air-conditioner is operational for 600 hours during summer on cooling mode. The compressor is also operational for the complete duration. The total energy consumption of the air-conditioner during the above mentioned period, in kWh, is _________(rounded off to nearest integer).
The decay of sound in an enclosed lecture hall of volume 3500 $m^3$ is shown in the Figure below. The sound source is switched off at point P. Using the Reverberation Time $(RT_{60})$ obtained from the figure, the calculated total sound absorption of the hall, in Sabins, is _____ (rounded off to the nearest integer).
A non-stop express elevator directly connects the observatory level at 80th floor of a tower with the podium at 2nd floor level. The tower has a uniform floor-floor height of 4 m. The elevator attains a maximum speed of 8 m/s. Assume 2 m/s2 as net vertical acceleration and net vertical deceleration (incorporating gravity). If the elevator starts from a state of rest from the podium, the time taken to reach the observatory, in seconds, is ________ (rounded off to one decimal place).