Профессиональное развитие будущих инженеров-строителей средствами иностранного языка: Лексический практикум по английскому языку. Трубникова Н.В. - 54 стр.

UptoLike

Составители:

Рубрика:



II. Communication activities:

1. Describe two different types of heating system for each of the fol-

lowing applications: house, office, commercial garage, shop, ware-

house and heavy engineering factory.

2. Sketch the installation of a ducted warm-air heating system in a

house and describe its operation.

3. Explain how pressurization systems work.

4. List and discuss the merits of the methods used to generate electri-

cal power.

5. Discuss the application of CHP systems in relation to density of

heat usage, local and national government policy, possible plant sites,

complexity of existing underground services, ground conditions, costs

of competing fuels, type and age of buildings, traffic disruption during

installation and better control of pollution. (The term “density of heat

usage” refers to the actual use of heat in megajoules per unit ground

plan area, including all floors of buildings and appropriate industrial

processes requiring the sort of heat to be sold.)

Block C

Experimental work

1. A medium-pressure hot-water heating system is designed to provide a heat

output of 100 kW with flow and return temperatures of 110 °C and 85 °C re-

spectively. Calculate the pump water flow rate required in litres per second.

2. Find the dimensions of a double-panel steel radiator suitable for a room hav-

ing an air temperature of 15 °C when the water flow and return temperatures

are 86 °C and 72 °C respectively and the room heat loss is 4.25 kW.

3. List the characteristics of electrical heating systems and compare them

with other fuel-based systems.

4. Outline the parameters considered when deciding whether to use a one- or

two-pipe distribution arrangement for a radiator and convector-low pressure

hot-water heating system.