Book - School of Science and Technology

ContentsixFeed cisterns 591Unvented hot water systems 592Water treatment 593Materials, etc. 595Solar collectors 59621 Piping design for central hot water supply systems 598Primary circulations 598Secondary outflow and return pipework 600Systemarrangements 61422 Automatic controls and building management systems 620Building regulations 621Sensing devices 624Control devices 627Controller modes of operation 635Systems controls 639Heating systemcontrols 641Air-conditioning systemcontrols 643Building management systems 65323 Running costs 659Primary energy 661Heating systems ± Part L regulations 662Period of use 666Mechanically ventilated buildings 672Air-conditioned buildings 674Hot water supply 676Energy targets 677Maintenance 679Investment appraisals 68124 Combined heat and power (CHP) 688Basic considerations 688CHP systems ± criteria for selection 696Emergent technologies 699Conclusion 701Appendix I Temperature levels 702Appendix II SI unit symbols 703Appendix III Conversion factors 704Index 707