Book - School of Science and Technology

Index 717Reciprocating enginescombined heat/powersystems 691±2heat recovery693±6, 694±6refrigeration 536, 537Reciprocating pumps 203Recirculation units 370±2Rectangular chimneys 326Rectangular ductwork 439, 452Reflective glasses 79Reflective surfaces 193Refrigeration 530±62condensers 547±9, 548±9cycles 511, 531±2evaporators 547, 549±53heat pumps 557±62, 557±61heat recovery554±7, 555±6media 533±6, 535pipework 546±7plant 536±54, 682Regenerative heatexchangers 507±8, 508Regulating valves 246, 246Regulating Variable Flow RateSystems 470Regulations see Building . . .Relative humidity9, 9Relayjoints 165, 165Relief valves 276±7Resistance 23Resistance factors 355Resistivity23Respiration 341Restrained expansionjoints 257Resultant temperature 17Return air grilles 429±31Return pipework 600±14Return pumps 223, 223Reverse cycle heat pumps399±401, 400±1, 650Reversed-return water pipes 157,244Rietschel, H. 252Ringlemann charts 295Roof-top boiler houses 308±9flues 335±6, 338Roofscavityinsulation 38conduction gain 88solar heat gain 83, 88solar radiation 76U values 25±6ventilation 351±3, 356±7Room air-conditioningsystems 398±9Room controls,heating 642Room storage heaters 120±1,123±34Rooms (noise) 464Rotarycompressors 538cup burners 284±5, 285distributors 280gear pumps 203vane anemometers 471±2Run-around coils 509±11Runners (centrifugalfans) 476Running costs 659±87air-conditioned buildings674±6hot water systems 676±7primaryenergy 661±2ventilation 672±4Safety291±2, 592±3Sankeydiagrams 693±4, 694SAP see Standard AssessmentProcedureSaturated air 518Saturated steam 160±1, 253Saturationhumidity9, 9psychrometry 518steam generation 159Schools 346Screens 655Screw compressors 539Screw conveyors 299Scrolls 276, 538, 538Sealed bellows thermostats624±5, 625Sealed compressors 536, 537Seasonal influences 67heat conversionefficiency669±70see also Summer time; WintertimeSecondaryair 284circulation 613outflow pipework 600±14,601±13pipework 615, 616returns 609±10, 610Selection criteriaboilers 262±7combined heat/powersystems 696±8direct heating 116±19fuel 118±19indirect heating 116±19Semi-hermitic compressors536Sensible heat 67Sensible heat gains 514±15Sensors 621, 624±7, 655Series flow 387, 388Series hot water circuits 157Service tanks 308, 309Severe U values 24Shading devicescomputer plots 84correction factors 81design 71solar heat gain 78, 80±3Sheet steel 441Sheltered U values 24Sherratt, A. F. C. 411Shields 275Shoe valves 630Shorter, D. N. 61Shunt meters 225, 226, 309SI unit symbols 703to Imperial units 704±5Side-wall inlets 420±2, 421±2Side-wall outlets 425, 426Silica panels 128Silos 298Simple payback periods 683Simulations (airconditioning)674±5, 675Single feed indirectcylinders 580, 580Single point draw off 566±7Single resistances 233±5, 236Single seat valves 630Single stage absorptionplant 540±1, 540Single-deflection airdistribution 422Single-duct air-conditioning 383,383Single-duct terminal reheatsystems 527Single-flue Cornish boilers 272Single-pipe circuits 152±4, 153±4,237±8, 237, 239Single-pipe gravityreturn 164Siting radiators 192±3, 193Skirting convectors 196, 197Skirting heaters 111, 111Slab cooling systems 406, 407Sling psychrometer 14±15, 14Sludge formation 231Sludge valves 305Small-bore hot watercircuits 154, 154Smart windows 79Smokechimneyconstruction 332±3cigarette 342±3control 366±7, 650±1dampers 445±6, 446densityindicators 295indicators 295Sodium aluminium silicates594Sodium flame tests 486±7Software 655