Профессиональное развитие будущих инженеров-строителей средствами иностранного языка: Лексический практикум по английскому языку. Трубникова Н.В. - 62 стр.

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3. State, with reasons, the appropriate combinations of natural and mechani-

cal ventilation for the following: residence; city office block; basement

boiler room; industrial kitchen; internal toilet accommodation; hospital

operating theatre; entertainment theatre.

4. Explain, with the aid of sketches, how the external wind environment af-

fects the internal thermal environment of a building.

Block C

Experimental work

1. A room has a sensible heat gain of 10 kW and a supply air temperature of

10 °C d.b. Find the supply air rate required to keep the room air down to 20

°C d.b.

2. Ten people occupy an office and each produces 50 W of latent heat. The

supply air flow rate is 0.5m

/s and its temperature is 12 °C d.b. If the room is

to be maintained at 21 °C d.b. and 50% saturation, calculate the supply air

moisture content.

A department store has 340 people in an area of 35 m x 25 m that is 4 m high.

Smoking is permitted.

(a) Calculate the fresh air quantity required to provide 12.51/s per person.

If the air change rate is not to be less than 5 changes per hour, find the fol-

lowing:

(b) supply air quantity;

(d) extract air quantity if 85% of the supply air is to be mechanically with-

drawn;

(e) recirculated air quantity;

(f) ducted exhaust air quantity.

3. List the procedure for the design of an air-conditioning system for an office

block.