Building Services Engineering 5th Edition Handbook

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Ventilation and air conditioning 173 68. Which is a correct description of the dual-duct air-conditioning system? 1. Duplicated supply and return air ducts. 2. A reduced cost design. 3. Simultaneous heating and cooling to adjacent rooms. 4. Not used in commercial office buildings. 5. Appropriate for low-energy new buildings. 69. Which is a correct description of the induction unit air-conditioning system? 1. Each room terminal unit has a secondary air circulation fan. 2. Recirculation air is induced away from the air discharged to atmosphere by suction from the supply air fan. 3. Recirculated room air is neither heated nor cooled. 4. Each terminal induction unit has a 2-, 3- or 4-pipe heating and chilled-water distribution. 5. Recirculated room air does not need filtration. 70. What does FCU air-conditioning system stand for? 1. Full conditioning unit. 2. Face console unit. 3. Full compressor unit. 4. Fan coil unit. 5. Failed compressor unit. 71. Which is a correct description of the fan coil unit air-conditioning system? 1. Terminal unit used in an induction system. 2. An FCU is a small AHU. 3. Anything having a fan. 4. Room air conditioner with a fan. 5. Electric heating coil with a supply air fan. 72. Which is appropriate for an FCU? 1. Can be around the size of a suitcase. 2. Does not always contain a fan. 3. The unit that takes heated and cooled streams of air from different ducts, mixes them and supplies conditioned air into the zone. 4. Potential direct replacement for an induction unit. 5. Always large enough to walk around inside it. 73. Which of these applies to packaged room air-conditioning units? 1. Always connected to a ducted air system. 2. Always connected to a central chilled-water plant system. 3. Each unit has a refrigeration compressor. 4. Always very quiet operation. 5. Power demand not exceeding 250 W. 74. Which is not correct for packaged room air-conditioning units? 1. Small applications such as home single office and motel room. 2. Stand-alone unit used for large computer server rooms. 3. Silent and have no servicing requirement.
174 Ventilation and air conditioning 4. May be connected to the BMS. 5. Built-in controls. 75. Which applies to vapour-compression refrigeration? 1. Refrigerant gas compressor may be multi-cylinder reciprocating piston or volute scroll. 2. Refrigerant always remains as a gas. 3. Refrigerant R12 is ozone friendly. 4. Refrigerant R22 is in domestic refrigerators. 5. Ammonia is not suitable as a refrigerant. 76. Which applies to vapour-compression refrigeration? 1. Compressed air. 2. Refrigerant vaporizes in the compressor. 3. Screw compressor. 4. Linear compressor. 5. Refrigerant condenses at low pressure and temperature. 77. Which applies to the vapour-compression refrigeration cycle? 1. Refrigerant liquid is pressurized by a centrifugal compressor. 2. Refrigerant liquid warms the inside of the building. 3. Reciprocating compressor increases refrigerant gas pressure. 4. Refrigerant thermostatic expansion valve stops and starts the flow of refrigerant to the compressor. 5. Refrigerant liquid evaporates fully at 25 ◦ C and 4 bar pressure in the evaporator. 78. What does COP of a refrigeration cooling system mean? 1. Convective operated pressure system. 2. Compressor operated performance. 3. Ratio of heat absorbed by refrigerant divided by power consumption of the compressor. 4. Number is always less than 1.0. 5. Ratio of the heat discharged in the condenser to the input power to the compressor. 79. Which applies to the lubrication of refrigeration compressors? 1. Reciprocating compressors produce oil carry-over into the refrigerant pipes. 2. Reciprocating compressors do not require lubrication. 3. Compressor lubricating oil never leaves the crankcase. 4. Piston rings do not let crankcase oil pass. 5. Refrigerant lubricates the compressor bearings. 80. What are refrigerants? 1. Combustible hydrocarbons. 2. Water. 3. Hydrocarbon oil. 4. Toxic. 5. Fluorinated hydrocarbons. 81. Which correctly describes the refrigeration cycle? 1. Thermostatic expansion valve regulates the rate of refrigerant flow into the evaporator to ensure superheated vapour enters the compressor.
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Building Services Engineering
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Building Services Engineering Fifth
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Contents Preface to fifth edition A
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Contents vii Sick building syndrome
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Contents ix Circuit design 294 Cabl
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Preface to fifth edition Building S
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Acknowledgements I am particularly
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Units and constants xv Table 2 Mult
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Symbols xvii Symbol Description Uni
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Symbols xix Symbol Description Unit
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2 Built environment Introduction Th
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4 Built environment Ventilation The
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6 Built environment (a) At full occ
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8 Built environment Table 1.2 Compa
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10 Built environment Because of the
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12 Built environment Visual display
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14 Built environment v = 7 m/s t a
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16 Built environment 1.4 Sling psyc
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18 Built environment 1.7 Thermistor
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20 Built environment t res = t g (1
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22 Built environment great care wit
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24 Built environment 16. An hotel l
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26 Built environment 37. Are any of
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28 Built environment building has a
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30 Built environment 73. What was t
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32 Energy economics Introduction Bu
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34 Energy economics 16. air-to-air
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36 Energy economics 1 kWh = 1 kWh
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38 Energy economics 2. Heat transfe
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40 Energy economics For solid fuel
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42 Energy economics gas cost = 1.80
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44 Energy economics Table 2.5 Carbo
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46 Energy economics EXAMPLE 2.8 A h
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48 Energy economics annual cost = u
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50 Energy economics EXAMPLE 2.12 Ex
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52 Energy economics l = 0.035 ( 1 0
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54 Energy economics Table 2.11 Valu
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56 Energy economics From Table 2.4
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58 Energy economics 3. Minimum outs
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3 Heat loss calculations Learning o
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62 Heat loss calculations Table 3.1
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64 Heat loss calculations Table 3.6
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66 Heat loss calculations Where onl
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68 Heat loss calculations The venti
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70 Heat loss calculations The surro
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72 Heat loss calculations The speci
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74 Heat loss calculations where R m
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76 Heat loss calculations The addit
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78 Heat loss calculations operation
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80 Heat loss calculations 2. The fo
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82 Heat loss calculations internal
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84 Heat loss calculations 27. Which
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86 Heating Key terms and concepts a
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88 Heating 4.2 Electrically heated
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90 Heating Sheet steel case Removab
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92 Heating Floor finish Screed with
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94 Heating Flue Return air plenum F
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96 Heating Table 4.1 Classification
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98 Heating Table 4.2 Heat output fr
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100 Heating Table 4.3 Flow of water
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102 Heating and, maximum available
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104 Heating This means that one vol
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106 Heating Performance testing A r
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108 Heating Electrical power genera
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110 Heating Combined heat and power
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112 Heating 3. A building energy ma
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114 Heating Connections are made to
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116 Heating remotely the MWh consum
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118 Heating 13. The two-pipe heatin
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120 Heating 27. Which is not correc
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Page 147 and 148: 126 Ventilation and air conditionin
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Page 199 and 200: 6 Hot- and cold-water supplies Lear
Page 201 and 202: 180 Hot- and cold-water supplies Wa
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Page 205 and 206: 184 Hot- and cold-water supplies Ce
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Page 209 and 210: 188 Hot- and cold-water supplies 0.
Page 211 and 212: 190 Hot- and cold-water supplies 53
Page 213 and 214: 192 Hot- and cold-water supplies an
Page 215 and 216: 194 Hot- and cold-water supplies Ta
Page 217 and 218: 196 Hot- and cold-water supplies Ta
Page 219 and 220: 198 Hot- and cold-water supplies (a
Page 225 and 226: 204 Hot- and cold-water supplies 49
Page 227 and 228: 206 Soil and waste systems Introduc
Page 229 and 230: 208 Soil and waste systems Open to
Page 231 and 232: 210 Soil and waste systems 7. Bends
Page 233 and 234: 212 Soil and waste systems The inte
Page 235 and 236: 214 Soil and waste systems 40 mm wa
Page 237 and 238: 216 Soil and waste systems Table 7.
Page 239 and 240: 218 Soil and waste systems 50 mm ve
Page 241 and 242: 220 Soil and waste systems 3. Long
Page 243 and 244: 222 Surface-water drainage Table 8.
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224 Surface-water drainage Rectangu
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226 Surface-water drainage The solu
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228 Surface-water drainage 7. A PVC
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230 Below-ground drainage Design ca
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232 Below-ground drainage Manhole:
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234 Below-ground drainage From Fig.
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236 Below-ground drainage storage v
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238 Below-ground drainage 14. The f
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240 Condensation in buildings mould
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242 Condensation in buildings The w
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244 Condensation in buildings EXAMP
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246 Condensation in buildings This
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248 Condensation in buildings Tempe
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250 Condensation in buildings and,
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252 Condensation in buildings EXAMP
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254 Condensation in buildings Tempe
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256 Condensation in buildings For t
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258 Condensation in buildings 4. Ev
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11 Lighting Learning objectives Stu
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262 Lighting Table 11.1 Typical val
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264 Lighting Light sources 9 9 9 Wi
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266 Lighting Utilization factor The
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268 Lighting From Table 11.3, for a
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270 Lighting Table 11.4 Lamp data.
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272 Lighting number of lamps = 12.8
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274 Lighting 3. Sketch and describe
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276 Lighting 4. Insufficient inform
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278 Lighting 3. 800 lm/m 2 . 4. 260
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12 Gas Learning objectives Study of
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282 Gas Open to atmosphere Rubber p
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284 Gas EL = (1.25 × 34) m = 42.5
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286 Gas become exhausted. SNG will
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288 Gas are ignited and an air flow
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290 Gas 3. The pipe from a gas mete
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292 Electrical installations Key te
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294 Electrical installations curren
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296 Electrical installations 1 Volt
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298 Electrical installations power
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300 Electrical installations For1mm
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302 Electrical installations Table
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304 Electrical installations Incomi
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306 Electrical installations energi
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308 Electrical installations Starte
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310 Electrical installations Ethyle
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312 Electrical installations Test o
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314 Electrical installations Joint
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316 Electrical installations 4. 100
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318 Electrical installations 39. Wh
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320 Electrical installations 51. Wh
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322 Room acoustics 20. understand t
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324 Room acoustics pump blades and
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326 Room acoustics ceiling, Q is 4.
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328 Room acoustics Table 14.2 Solut
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330 Room acoustics Table 14.3 Fan s
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332 Room acoustics Table 14.4 Illus
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334 Room acoustics (Sound Research
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336 Room acoustics The target room
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338 Room acoustics Table 14.6 Noise
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340 Room acoustics 100 90 80 70 Sou
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342 Room acoustics 24. A forced-dra
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344 Room acoustics The room directi
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346 Room acoustics 3. Multiple sour
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348 Room acoustics 55. Which is not
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350 Fire protection computer monito
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352 Fire protection halogen gas, wh
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354 Fire protection the reach of tu
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356 Fire protection Range pipe Spri
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358 Fire protection Fire compartmen
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360 Fire protection 16. Which are c
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362 Plant and service areas Key ter
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364 Plant and service areas 2.0 1.5
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366 Plant and service areas Fuel st
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368 Plant and service areas a minim
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370 Plant and service areas An unde
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372 Plant and service areas Air cha
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374 Plant and service areas 100 mm
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376 Plant and service areas Fire co
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378 Plant and service areas Table 1
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380 Plant and service areas 11. Wha
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17 Mechanical transportation Learni
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384 Mechanical transportation Table
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386 Mechanical transportation Crowd
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388 Mechanical transportation Hydra
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390 Mechanical transportation 4. Co
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18 Question bank Learning objective
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394 Question bank 8. Which correctl
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396 Question bank 5. This building
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398 Understanding units Questions 1
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400 Understanding units 15. Which i
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402 Understanding units 29. Which o
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404 Understanding units 43. Which i
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Appendix: answers to questions Chap
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408 Appendix Chapter 3 Heat loss ca
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410 Appendix 4. 0.007469 kg H 2 O/k
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412 Appendix 32. 5 33. 5 34. 3 35.
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414 Appendix 23. Lighting 1200 h/ye
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416 Appendix 27. 37 dB. 28. 39 dB.
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418 Appendix 15. 5 16. 2 17. 5 18.
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References Action Energy, Departmen
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Index Absorption 154, 324 Absorptio
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424 Index Gas burner controls 289 G
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426 Index Sensible heat gains 137 S
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Building Services Engineering 5th Edition Handbook

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