1. Choose a heating system for each of the five buildings listed below and state briefly the reasons for your choice.

{a} Two-storey, 4 bedroom, semi-detached house;

{b} Supermarket

{c} Large factory production area:

{d} Hospital-wards.

{e} Large multi-storey inner-city office building.

2. {a} Give three reasons why extract ventilation is necessary in a commercial kitchen.

{b} Describe, with the aid of a sketch, a suitable method of ventilating a commercial kitchen.

Show all necessary components to meet good design criteria.

{c} Discuss, with the aid of a sketch, a system of air distribution for an office measuring 10 metres x 10 metres x 3.3 metres high.

Supply and return air is to be used.

Indicate the type of air terminals you would propose.

3. {a} The hot water system in an old people’s home is fed by gravity from water storage tanks located in the roof space of the two-storey building.

Discuss system alterations to overcome low water pressure at shower outlets.

4. {a} A large 100-bed hotel complex is situated in a warm climate and the average summer outdoor temperature is 30^oC.

Describe a suitable air-conditioning system that would be appropriate for the building.

{b} The hotel complex in part {a} has four conference suites and two large function rooms.

Describe a suitable control system for the air-conditioning plant and equipment that you would propose for these larger rooms.

{c} What measures would you recommend to reduce the overall heat gains in the hotel building during the initial design stages.

5. {a} Calculate the annual running cost for a commercial heating system using 35 sec oil with a combined boiler output of 300 kW.

Take the oil price to be 22 pence/litre.

Compare this with natural gas at 2.3 p/kWh.